./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix016_pso.opt_tso.opt.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/mix016_pso.opt_tso.opt.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/mix016_pso.opt_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix016_pso.opt_tso.opt.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 22:10:57,902 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:10:57,977 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:10:57,982 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:10:57,983 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:10:58,012 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:10:58,013 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:10:58,014 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:10:58,015 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:10:58,018 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:10:58,019 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:10:58,019 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:10:58,020 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:10:58,021 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:10:58,021 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:10:58,022 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:10:58,022 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:10:58,022 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:10:58,023 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:10:58,023 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:10:58,023 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:10:58,024 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:10:58,024 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:10:58,024 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:10:58,024 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:10:58,025 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:10:58,025 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:10:58,025 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:10:58,026 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:10:58,026 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:10:58,027 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:10:58,027 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:10:58,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:10:58,028 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:10:58,028 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:10:58,028 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:10:58,029 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:10:58,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:10:58,029 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:10:58,029 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:10:58,030 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:10:58,030 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:10:58,030 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:10:58,030 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:10:58,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:10:58,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:10:58,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:10:58,328 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:10:58,329 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:10:58,330 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix016_pso.opt_tso.opt.yml/witness.yml [2024-06-27 22:10:58,424 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:10:58,424 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:10:58,426 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix016_pso.opt_tso.opt.i [2024-06-27 22:10:59,469 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:10:59,754 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:10:59,758 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix016_pso.opt_tso.opt.i [2024-06-27 22:10:59,781 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6695f462a/dfdc5eff08a146929f26c8e1f0d821c8/FLAG013aaf848 [2024-06-27 22:10:59,796 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6695f462a/dfdc5eff08a146929f26c8e1f0d821c8 [2024-06-27 22:10:59,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:10:59,798 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:10:59,800 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:10:59,800 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:10:59,805 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:10:59,806 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:10:58" (1/2) ... [2024-06-27 22:10:59,807 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63589a05 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:10:59, skipping insertion in model container [2024-06-27 22:10:59,807 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:10:58" (1/2) ... [2024-06-27 22:10:59,808 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6237e885 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:10:59, skipping insertion in model container [2024-06-27 22:10:59,809 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:10:59" (2/2) ... [2024-06-27 22:10:59,810 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63589a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:10:59, skipping insertion in model container [2024-06-27 22:10:59,811 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:10:59" (2/2) ... [2024-06-27 22:10:59,811 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:10:59,835 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:10:59,837 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$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_p1_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )z >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:10:59,837 INFO L97 edCorrectnessWitness]: Location invariant before [L846-L846] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$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_p1_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )z >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:10:59,837 INFO L97 edCorrectnessWitness]: Location invariant before [L848-L848] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$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_p1_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )z >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:10:59,837 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:10:59,838 INFO L106 edCorrectnessWitness]: ghost_update [L844-L844] multithreaded = 1; [2024-06-27 22:10:59,883 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:11:00,034 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/mix016_pso.opt_tso.opt.i[956,969] [2024-06-27 22:11:00,263 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:11:00,276 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:11:00,317 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/mix016_pso.opt_tso.opt.i[956,969] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:11:00,458 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:11:00,507 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:11:00,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:11:00 WrapperNode [2024-06-27 22:11:00,508 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:11:00,509 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:11:00,509 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:11:00,509 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:11:00,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:11:00" (1/1) ... [2024-06-27 22:11:00,531 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:11:00" (1/1) ... [2024-06-27 22:11:00,589 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2024-06-27 22:11:00,589 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:11:00,590 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:11:00,590 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:11:00,590 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:11:00,600 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:11:00" (1/1) ... [2024-06-27 22:11:00,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:11:00" (1/1) ... [2024-06-27 22:11:00,605 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:11:00" (1/1) ... [2024-06-27 22:11:00,623 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 22:11:00,623 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:11:00" (1/1) ... [2024-06-27 22:11:00,623 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:11:00" (1/1) ... [2024-06-27 22:11:00,633 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:11:00" (1/1) ... [2024-06-27 22:11:00,635 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:11:00" (1/1) ... [2024-06-27 22:11:00,638 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:11:00" (1/1) ... [2024-06-27 22:11:00,640 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:11:00" (1/1) ... [2024-06-27 22:11:00,644 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:11:00,645 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:11:00,645 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:11:00,645 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:11:00,646 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:11:00" (1/1) ... [2024-06-27 22:11:00,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:11:00,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:11:00,803 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 22:11:00,829 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 22:11:00,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:11:00,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:11:00,849 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:11:00,849 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:11:00,849 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:11:00,849 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:11:00,850 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:11:00,850 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:11:00,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:11:00,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:11:00,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:11:00,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:11:00,853 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 22:11:00,977 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:11:00,979 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:11:01,461 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:11:01,462 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:11:01,651 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:11:01,652 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:11:01,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:11:01 BoogieIcfgContainer [2024-06-27 22:11:01,652 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:11:01,655 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:11:01,655 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:11:01,658 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:11:01,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:10:58" (1/4) ... [2024-06-27 22:11:01,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233fab99 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:11:01, skipping insertion in model container [2024-06-27 22:11:01,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:10:59" (2/4) ... [2024-06-27 22:11:01,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233fab99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:11:01, skipping insertion in model container [2024-06-27 22:11:01,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:11:00" (3/4) ... [2024-06-27 22:11:01,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233fab99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:11:01, skipping insertion in model container [2024-06-27 22:11:01,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:11:01" (4/4) ... [2024-06-27 22:11:01,663 INFO L112 eAbstractionObserver]: Analyzing ICFG mix016_pso.opt_tso.opt.i [2024-06-27 22:11:01,679 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:11:01,680 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 22:11:01,680 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:11:01,757 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:11:01,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 22:11:01,827 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-27 22:11:01,827 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:11:01,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 75 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-27 22:11:01,832 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 22:11:01,837 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-06-27 22:11:01,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:11:01,859 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;@2d071f56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:11:01,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 22:11:01,863 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:11:01,863 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 22:11:01,863 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:11:01,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:01,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:11:01,864 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:01,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:01,869 INFO L85 PathProgramCache]: Analyzing trace with hash 379867252, now seen corresponding path program 1 times [2024-06-27 22:11:01,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:01,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336804470] [2024-06-27 22:11:01,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:01,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:03,143 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 22:11:03,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:03,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336804470] [2024-06-27 22:11:03,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336804470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:03,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:03,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:11:03,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932631962] [2024-06-27 22:11:03,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:03,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:11:03,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:03,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:11:03,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:11:03,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-06-27 22:11:03,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 22:11:03,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:03,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-06-27 22:11:03,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:03,905 INFO L124 PetriNetUnfolderBase]: 2330/3952 cut-off events. [2024-06-27 22:11:03,905 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-06-27 22:11:03,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7404 conditions, 3952 events. 2330/3952 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 25718 event pairs, 1832 based on Foata normal form. 120/3736 useless extension candidates. Maximal degree in co-relation 7392. Up to 3385 conditions per place. [2024-06-27 22:11:03,936 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 39 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2024-06-27 22:11:03,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 215 flow [2024-06-27 22:11:03,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:11:03,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:11:03,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-06-27 22:11:03,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7092198581560284 [2024-06-27 22:11:03,951 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 100 transitions. [2024-06-27 22:11:03,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 215 flow [2024-06-27 22:11:03,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 210 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:11:03,963 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 124 flow [2024-06-27 22:11:03,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-06-27 22:11:03,968 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-27 22:11:03,968 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 124 flow [2024-06-27 22:11:03,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 22:11:03,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:03,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:03,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:11:03,969 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:03,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:03,971 INFO L85 PathProgramCache]: Analyzing trace with hash -19758893, now seen corresponding path program 1 times [2024-06-27 22:11:03,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:03,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898687451] [2024-06-27 22:11:03,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:03,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:04,967 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 22:11:04,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:04,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898687451] [2024-06-27 22:11:04,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898687451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:04,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:04,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:11:04,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623780658] [2024-06-27 22:11:04,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:04,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:11:04,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:04,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:11:04,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:11:05,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-27 22:11:05,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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 22:11:05,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:05,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-27 22:11:05,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:05,609 INFO L124 PetriNetUnfolderBase]: 2641/3910 cut-off events. [2024-06-27 22:11:05,609 INFO L125 PetriNetUnfolderBase]: For 613/613 co-relation queries the response was YES. [2024-06-27 22:11:05,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8786 conditions, 3910 events. 2641/3910 cut-off events. For 613/613 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 22117 event pairs, 1142 based on Foata normal form. 3/3780 useless extension candidates. Maximal degree in co-relation 8774. Up to 3803 conditions per place. [2024-06-27 22:11:05,634 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 51 selfloop transitions, 7 changer transitions 0/71 dead transitions. [2024-06-27 22:11:05,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 71 transitions, 302 flow [2024-06-27 22:11:05,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:11:05,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:11:05,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-06-27 22:11:05,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6702127659574468 [2024-06-27 22:11:05,640 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 124 flow. Second operand 4 states and 126 transitions. [2024-06-27 22:11:05,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 71 transitions, 302 flow [2024-06-27 22:11:05,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 71 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:11:05,643 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 162 flow [2024-06-27 22:11:05,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-06-27 22:11:05,645 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-06-27 22:11:05,645 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 162 flow [2024-06-27 22:11:05,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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 22:11:05,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:05,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:05,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:11:05,649 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:05,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:05,654 INFO L85 PathProgramCache]: Analyzing trace with hash -225604236, now seen corresponding path program 1 times [2024-06-27 22:11:05,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:05,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108039091] [2024-06-27 22:11:05,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:05,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:06,902 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 22:11:06,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:06,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108039091] [2024-06-27 22:11:06,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108039091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:06,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:06,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:11:06,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847368388] [2024-06-27 22:11:06,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:06,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:11:06,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:06,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:11:06,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:11:06,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-27 22:11:06,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 22:11:06,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:06,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-27 22:11:06,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:07,833 INFO L124 PetriNetUnfolderBase]: 3322/4860 cut-off events. [2024-06-27 22:11:07,833 INFO L125 PetriNetUnfolderBase]: For 1956/1956 co-relation queries the response was YES. [2024-06-27 22:11:07,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11914 conditions, 4860 events. 3322/4860 cut-off events. For 1956/1956 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 26909 event pairs, 930 based on Foata normal form. 6/4716 useless extension candidates. Maximal degree in co-relation 11900. Up to 4689 conditions per place. [2024-06-27 22:11:07,863 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 71 selfloop transitions, 12 changer transitions 0/95 dead transitions. [2024-06-27 22:11:07,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 95 transitions, 448 flow [2024-06-27 22:11:07,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:11:07,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:11:07,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-06-27 22:11:07,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6276595744680851 [2024-06-27 22:11:07,868 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 162 flow. Second operand 6 states and 177 transitions. [2024-06-27 22:11:07,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 95 transitions, 448 flow [2024-06-27 22:11:07,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 95 transitions, 428 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 22:11:07,873 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 207 flow [2024-06-27 22:11:07,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=207, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2024-06-27 22:11:07,875 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 7 predicate places. [2024-06-27 22:11:07,875 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 207 flow [2024-06-27 22:11:07,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 22:11:07,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:07,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:07,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:11:07,876 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:07,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:07,877 INFO L85 PathProgramCache]: Analyzing trace with hash -776883720, now seen corresponding path program 1 times [2024-06-27 22:11:07,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:07,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491716060] [2024-06-27 22:11:07,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:07,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:09,093 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 22:11:09,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:09,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491716060] [2024-06-27 22:11:09,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491716060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:09,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:09,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:11:09,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295674916] [2024-06-27 22:11:09,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:09,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:11:09,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:09,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:11:09,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:11:09,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:11:09,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 207 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 22:11:09,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:09,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:11:09,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:10,175 INFO L124 PetriNetUnfolderBase]: 3797/5533 cut-off events. [2024-06-27 22:11:10,175 INFO L125 PetriNetUnfolderBase]: For 4033/4033 co-relation queries the response was YES. [2024-06-27 22:11:10,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14668 conditions, 5533 events. 3797/5533 cut-off events. For 4033/4033 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 30298 event pairs, 1295 based on Foata normal form. 2/5372 useless extension candidates. Maximal degree in co-relation 14651. Up to 5429 conditions per place. [2024-06-27 22:11:10,212 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 58 selfloop transitions, 11 changer transitions 0/79 dead transitions. [2024-06-27 22:11:10,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 79 transitions, 424 flow [2024-06-27 22:11:10,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:11:10,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:11:10,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-06-27 22:11:10,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446808510638298 [2024-06-27 22:11:10,214 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 207 flow. Second operand 5 states and 128 transitions. [2024-06-27 22:11:10,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 79 transitions, 424 flow [2024-06-27 22:11:10,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 79 transitions, 395 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 22:11:10,220 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 257 flow [2024-06-27 22:11:10,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=257, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2024-06-27 22:11:10,222 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2024-06-27 22:11:10,223 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 257 flow [2024-06-27 22:11:10,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 22:11:10,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:10,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:10,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:11:10,223 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:10,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:10,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1686409856, now seen corresponding path program 1 times [2024-06-27 22:11:10,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:10,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309813571] [2024-06-27 22:11:10,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:10,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:12,319 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 22:11:12,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:12,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309813571] [2024-06-27 22:11:12,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309813571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:12,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:12,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:11:12,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584029392] [2024-06-27 22:11:12,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:12,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:11:12,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:12,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:11:12,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:11:12,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 22:11:12,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 257 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 22:11:12,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:12,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 22:11:12,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:13,454 INFO L124 PetriNetUnfolderBase]: 3252/4963 cut-off events. [2024-06-27 22:11:13,455 INFO L125 PetriNetUnfolderBase]: For 4860/4860 co-relation queries the response was YES. [2024-06-27 22:11:13,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13876 conditions, 4963 events. 3252/4963 cut-off events. For 4860/4860 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 28479 event pairs, 1066 based on Foata normal form. 2/4810 useless extension candidates. Maximal degree in co-relation 13855. Up to 4647 conditions per place. [2024-06-27 22:11:13,487 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 66 selfloop transitions, 13 changer transitions 0/90 dead transitions. [2024-06-27 22:11:13,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 90 transitions, 488 flow [2024-06-27 22:11:13,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:11:13,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:11:13,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-27 22:11:13,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2024-06-27 22:11:13,490 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 257 flow. Second operand 6 states and 159 transitions. [2024-06-27 22:11:13,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 90 transitions, 488 flow [2024-06-27 22:11:13,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 90 transitions, 472 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 22:11:13,502 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 292 flow [2024-06-27 22:11:13,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=292, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2024-06-27 22:11:13,505 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 14 predicate places. [2024-06-27 22:11:13,505 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 292 flow [2024-06-27 22:11:13,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 22:11:13,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:13,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:13,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:11:13,506 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:13,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:13,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1677300589, now seen corresponding path program 1 times [2024-06-27 22:11:13,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:13,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866041079] [2024-06-27 22:11:13,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:13,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:14,864 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 22:11:14,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:14,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866041079] [2024-06-27 22:11:14,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866041079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:14,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:14,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:11:14,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596116202] [2024-06-27 22:11:14,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:14,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:11:14,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:14,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:11:14,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:11:14,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:11:14,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 22:11:14,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:14,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:11:14,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:16,021 INFO L124 PetriNetUnfolderBase]: 3846/5616 cut-off events. [2024-06-27 22:11:16,022 INFO L125 PetriNetUnfolderBase]: For 8046/8052 co-relation queries the response was YES. [2024-06-27 22:11:16,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17190 conditions, 5616 events. 3846/5616 cut-off events. For 8046/8052 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 30716 event pairs, 1194 based on Foata normal form. 6/5452 useless extension candidates. Maximal degree in co-relation 17166. Up to 5397 conditions per place. [2024-06-27 22:11:16,057 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 75 selfloop transitions, 27 changer transitions 0/112 dead transitions. [2024-06-27 22:11:16,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 112 transitions, 734 flow [2024-06-27 22:11:16,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:11:16,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:11:16,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-06-27 22:11:16,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5815602836879432 [2024-06-27 22:11:16,059 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 292 flow. Second operand 6 states and 164 transitions. [2024-06-27 22:11:16,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 112 transitions, 734 flow [2024-06-27 22:11:16,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 112 transitions, 704 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 22:11:16,067 INFO L231 Difference]: Finished difference. Result has 71 places, 78 transitions, 472 flow [2024-06-27 22:11:16,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=472, PETRI_PLACES=71, PETRI_TRANSITIONS=78} [2024-06-27 22:11:16,068 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 18 predicate places. [2024-06-27 22:11:16,068 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 78 transitions, 472 flow [2024-06-27 22:11:16,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 22:11:16,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:16,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:16,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:11:16,069 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:16,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:16,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1683764089, now seen corresponding path program 2 times [2024-06-27 22:11:16,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:16,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040054866] [2024-06-27 22:11:16,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:16,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:17,325 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 22:11:17,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:17,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040054866] [2024-06-27 22:11:17,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040054866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:17,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:17,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:11:17,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367186254] [2024-06-27 22:11:17,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:17,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:11:17,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:17,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:11:17,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:11:17,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:11:17,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 78 transitions, 472 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 22:11:17,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:17,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:11:17,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:18,546 INFO L124 PetriNetUnfolderBase]: 3840/5602 cut-off events. [2024-06-27 22:11:18,546 INFO L125 PetriNetUnfolderBase]: For 10520/10523 co-relation queries the response was YES. [2024-06-27 22:11:18,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18450 conditions, 5602 events. 3840/5602 cut-off events. For 10520/10523 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 30505 event pairs, 1186 based on Foata normal form. 4/5439 useless extension candidates. Maximal degree in co-relation 18422. Up to 5391 conditions per place. [2024-06-27 22:11:18,588 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 71 selfloop transitions, 28 changer transitions 0/109 dead transitions. [2024-06-27 22:11:18,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 109 transitions, 764 flow [2024-06-27 22:11:18,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:11:18,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:11:18,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-27 22:11:18,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2024-06-27 22:11:18,590 INFO L175 Difference]: Start difference. First operand has 71 places, 78 transitions, 472 flow. Second operand 6 states and 159 transitions. [2024-06-27 22:11:18,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 109 transitions, 764 flow [2024-06-27 22:11:18,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 109 transitions, 732 flow, removed 16 selfloop flow, removed 0 redundant places. [2024-06-27 22:11:18,609 INFO L231 Difference]: Finished difference. Result has 77 places, 78 transitions, 507 flow [2024-06-27 22:11:18,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=507, PETRI_PLACES=77, PETRI_TRANSITIONS=78} [2024-06-27 22:11:18,610 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 24 predicate places. [2024-06-27 22:11:18,611 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 78 transitions, 507 flow [2024-06-27 22:11:18,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 22:11:18,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:18,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:18,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:11:18,611 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:18,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:18,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1387609623, now seen corresponding path program 3 times [2024-06-27 22:11:18,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:18,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853506176] [2024-06-27 22:11:18,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:18,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:19,695 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 22:11:19,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:19,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853506176] [2024-06-27 22:11:19,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853506176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:19,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:19,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:11:19,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874810283] [2024-06-27 22:11:19,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:19,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:11:19,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:19,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:11:19,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:11:19,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:11:19,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 78 transitions, 507 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 22:11:19,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:19,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:11:19,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:20,739 INFO L124 PetriNetUnfolderBase]: 3943/5753 cut-off events. [2024-06-27 22:11:20,740 INFO L125 PetriNetUnfolderBase]: For 11914/11923 co-relation queries the response was YES. [2024-06-27 22:11:20,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19279 conditions, 5753 events. 3943/5753 cut-off events. For 11914/11923 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 31378 event pairs, 1184 based on Foata normal form. 8/5573 useless extension candidates. Maximal degree in co-relation 19246. Up to 5490 conditions per place. [2024-06-27 22:11:20,779 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 80 selfloop transitions, 44 changer transitions 0/134 dead transitions. [2024-06-27 22:11:20,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 134 transitions, 1004 flow [2024-06-27 22:11:20,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:11:20,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:11:20,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-27 22:11:20,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5653495440729484 [2024-06-27 22:11:20,781 INFO L175 Difference]: Start difference. First operand has 77 places, 78 transitions, 507 flow. Second operand 7 states and 186 transitions. [2024-06-27 22:11:20,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 134 transitions, 1004 flow [2024-06-27 22:11:20,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 134 transitions, 899 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-27 22:11:20,800 INFO L231 Difference]: Finished difference. Result has 83 places, 95 transitions, 701 flow [2024-06-27 22:11:20,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=701, PETRI_PLACES=83, PETRI_TRANSITIONS=95} [2024-06-27 22:11:20,802 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 30 predicate places. [2024-06-27 22:11:20,803 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 95 transitions, 701 flow [2024-06-27 22:11:20,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 22:11:20,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:20,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:20,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:11:20,803 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:20,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:20,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1430566843, now seen corresponding path program 1 times [2024-06-27 22:11:20,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:20,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766002974] [2024-06-27 22:11:20,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:20,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:22,385 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 22:11:22,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:22,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766002974] [2024-06-27 22:11:22,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766002974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:22,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:22,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:11:22,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028150085] [2024-06-27 22:11:22,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:22,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:11:22,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:22,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:11:22,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:11:22,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:11:22,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 95 transitions, 701 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 22:11:22,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:22,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:11:22,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:23,585 INFO L124 PetriNetUnfolderBase]: 4003/5825 cut-off events. [2024-06-27 22:11:23,585 INFO L125 PetriNetUnfolderBase]: For 14144/14144 co-relation queries the response was YES. [2024-06-27 22:11:23,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20073 conditions, 5825 events. 4003/5825 cut-off events. For 14144/14144 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 31700 event pairs, 1175 based on Foata normal form. 2/5629 useless extension candidates. Maximal degree in co-relation 20037. Up to 5603 conditions per place. [2024-06-27 22:11:23,625 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 108 selfloop transitions, 27 changer transitions 0/145 dead transitions. [2024-06-27 22:11:23,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 145 transitions, 1151 flow [2024-06-27 22:11:23,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:11:23,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:11:23,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 22:11:23,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-27 22:11:23,628 INFO L175 Difference]: Start difference. First operand has 83 places, 95 transitions, 701 flow. Second operand 8 states and 197 transitions. [2024-06-27 22:11:23,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 145 transitions, 1151 flow [2024-06-27 22:11:23,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 145 transitions, 1078 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 22:11:23,657 INFO L231 Difference]: Finished difference. Result has 88 places, 104 transitions, 768 flow [2024-06-27 22:11:23,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=768, PETRI_PLACES=88, PETRI_TRANSITIONS=104} [2024-06-27 22:11:23,658 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 35 predicate places. [2024-06-27 22:11:23,658 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 104 transitions, 768 flow [2024-06-27 22:11:23,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 22:11:23,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:23,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:23,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:11:23,660 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:23,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:23,661 INFO L85 PathProgramCache]: Analyzing trace with hash -292089581, now seen corresponding path program 2 times [2024-06-27 22:11:23,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:23,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252784919] [2024-06-27 22:11:23,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:23,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:25,108 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 22:11:25,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:25,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252784919] [2024-06-27 22:11:25,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252784919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:25,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:25,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:11:25,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108510909] [2024-06-27 22:11:25,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:25,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:11:25,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:25,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:11:25,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:11:25,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:11:25,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 104 transitions, 768 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 22:11:25,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:25,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:11:25,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:26,315 INFO L124 PetriNetUnfolderBase]: 4075/5971 cut-off events. [2024-06-27 22:11:26,316 INFO L125 PetriNetUnfolderBase]: For 18464/18470 co-relation queries the response was YES. [2024-06-27 22:11:26,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21629 conditions, 5971 events. 4075/5971 cut-off events. For 18464/18470 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 32833 event pairs, 1134 based on Foata normal form. 6/5758 useless extension candidates. Maximal degree in co-relation 21592. Up to 5497 conditions per place. [2024-06-27 22:11:26,363 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 93 selfloop transitions, 58 changer transitions 0/161 dead transitions. [2024-06-27 22:11:26,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 161 transitions, 1406 flow [2024-06-27 22:11:26,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:11:26,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:11:26,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2024-06-27 22:11:26,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5896656534954408 [2024-06-27 22:11:26,365 INFO L175 Difference]: Start difference. First operand has 88 places, 104 transitions, 768 flow. Second operand 7 states and 194 transitions. [2024-06-27 22:11:26,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 161 transitions, 1406 flow [2024-06-27 22:11:26,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 161 transitions, 1335 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-27 22:11:26,393 INFO L231 Difference]: Finished difference. Result has 92 places, 116 transitions, 972 flow [2024-06-27 22:11:26,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=972, PETRI_PLACES=92, PETRI_TRANSITIONS=116} [2024-06-27 22:11:26,394 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 39 predicate places. [2024-06-27 22:11:26,394 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 116 transitions, 972 flow [2024-06-27 22:11:26,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 22:11:26,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:26,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:26,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:11:26,395 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:26,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:26,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1259869249, now seen corresponding path program 1 times [2024-06-27 22:11:26,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:26,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976291026] [2024-06-27 22:11:26,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:26,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:28,281 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 22:11:28,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:28,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976291026] [2024-06-27 22:11:28,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976291026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:28,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:28,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:11:28,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334502998] [2024-06-27 22:11:28,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:28,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:11:28,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:28,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:11:28,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:11:28,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:11:28,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 116 transitions, 972 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 22:11:28,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:28,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:11:28,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:29,448 INFO L124 PetriNetUnfolderBase]: 4052/5946 cut-off events. [2024-06-27 22:11:29,448 INFO L125 PetriNetUnfolderBase]: For 23740/23752 co-relation queries the response was YES. [2024-06-27 22:11:29,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22634 conditions, 5946 events. 4052/5946 cut-off events. For 23740/23752 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 32729 event pairs, 1150 based on Foata normal form. 6/5785 useless extension candidates. Maximal degree in co-relation 22595. Up to 5534 conditions per place. [2024-06-27 22:11:29,480 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 109 selfloop transitions, 44 changer transitions 0/163 dead transitions. [2024-06-27 22:11:29,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 163 transitions, 1499 flow [2024-06-27 22:11:29,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:11:29,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:11:29,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-06-27 22:11:29,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5835866261398176 [2024-06-27 22:11:29,485 INFO L175 Difference]: Start difference. First operand has 92 places, 116 transitions, 972 flow. Second operand 7 states and 192 transitions. [2024-06-27 22:11:29,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 163 transitions, 1499 flow [2024-06-27 22:11:29,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 163 transitions, 1476 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-27 22:11:29,526 INFO L231 Difference]: Finished difference. Result has 100 places, 119 transitions, 1112 flow [2024-06-27 22:11:29,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1112, PETRI_PLACES=100, PETRI_TRANSITIONS=119} [2024-06-27 22:11:29,527 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 47 predicate places. [2024-06-27 22:11:29,527 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 119 transitions, 1112 flow [2024-06-27 22:11:29,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 22:11:29,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:29,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:29,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:11:29,528 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:29,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:29,528 INFO L85 PathProgramCache]: Analyzing trace with hash 657080421, now seen corresponding path program 3 times [2024-06-27 22:11:29,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:29,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933501944] [2024-06-27 22:11:29,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:29,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:31,044 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 22:11:31,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:31,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933501944] [2024-06-27 22:11:31,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933501944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:31,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:31,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:11:31,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847552118] [2024-06-27 22:11:31,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:31,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:11:31,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:31,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:11:31,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:11:31,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:11:31,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 119 transitions, 1112 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 22:11:31,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:31,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:11:31,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:32,431 INFO L124 PetriNetUnfolderBase]: 4046/5927 cut-off events. [2024-06-27 22:11:32,432 INFO L125 PetriNetUnfolderBase]: For 33905/33905 co-relation queries the response was YES. [2024-06-27 22:11:32,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24372 conditions, 5927 events. 4046/5927 cut-off events. For 33905/33905 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 32491 event pairs, 1133 based on Foata normal form. 2/5882 useless extension candidates. Maximal degree in co-relation 24327. Up to 5474 conditions per place. [2024-06-27 22:11:32,467 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 99 selfloop transitions, 53 changer transitions 0/162 dead transitions. [2024-06-27 22:11:32,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 162 transitions, 1586 flow [2024-06-27 22:11:32,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:11:32,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:11:32,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-27 22:11:32,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683890577507599 [2024-06-27 22:11:32,469 INFO L175 Difference]: Start difference. First operand has 100 places, 119 transitions, 1112 flow. Second operand 7 states and 187 transitions. [2024-06-27 22:11:32,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 162 transitions, 1586 flow [2024-06-27 22:11:32,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 162 transitions, 1502 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 22:11:32,527 INFO L231 Difference]: Finished difference. Result has 103 places, 119 transitions, 1146 flow [2024-06-27 22:11:32,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1146, PETRI_PLACES=103, PETRI_TRANSITIONS=119} [2024-06-27 22:11:32,528 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 50 predicate places. [2024-06-27 22:11:32,529 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 119 transitions, 1146 flow [2024-06-27 22:11:32,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 22:11:32,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:32,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:32,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:11:32,530 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:32,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:32,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1437000769, now seen corresponding path program 2 times [2024-06-27 22:11:32,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:32,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504349181] [2024-06-27 22:11:32,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:32,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:34,296 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 22:11:34,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:34,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504349181] [2024-06-27 22:11:34,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504349181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:34,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:34,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:11:34,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970512900] [2024-06-27 22:11:34,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:34,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:11:34,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:34,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:11:34,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:11:34,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:11:34,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 119 transitions, 1146 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 22:11:34,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:34,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:11:34,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:35,482 INFO L124 PetriNetUnfolderBase]: 4072/5968 cut-off events. [2024-06-27 22:11:35,482 INFO L125 PetriNetUnfolderBase]: For 36403/36409 co-relation queries the response was YES. [2024-06-27 22:11:35,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25027 conditions, 5968 events. 4072/5968 cut-off events. For 36403/36409 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 32744 event pairs, 1122 based on Foata normal form. 6/5932 useless extension candidates. Maximal degree in co-relation 24979. Up to 5553 conditions per place. [2024-06-27 22:11:35,515 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 111 selfloop transitions, 47 changer transitions 0/168 dead transitions. [2024-06-27 22:11:35,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 168 transitions, 1727 flow [2024-06-27 22:11:35,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:11:35,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:11:35,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-27 22:11:35,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5653495440729484 [2024-06-27 22:11:35,516 INFO L175 Difference]: Start difference. First operand has 103 places, 119 transitions, 1146 flow. Second operand 7 states and 186 transitions. [2024-06-27 22:11:35,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 168 transitions, 1727 flow [2024-06-27 22:11:35,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 168 transitions, 1636 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 22:11:35,578 INFO L231 Difference]: Finished difference. Result has 105 places, 122 transitions, 1195 flow [2024-06-27 22:11:35,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1195, PETRI_PLACES=105, PETRI_TRANSITIONS=122} [2024-06-27 22:11:35,579 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 52 predicate places. [2024-06-27 22:11:35,579 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 122 transitions, 1195 flow [2024-06-27 22:11:35,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 22:11:35,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:35,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:35,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:11:35,580 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:35,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:35,581 INFO L85 PathProgramCache]: Analyzing trace with hash -287441255, now seen corresponding path program 3 times [2024-06-27 22:11:35,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:35,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864411958] [2024-06-27 22:11:35,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:35,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:37,664 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 22:11:37,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:37,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864411958] [2024-06-27 22:11:37,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864411958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:37,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:37,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:11:37,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668811710] [2024-06-27 22:11:37,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:37,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:11:37,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:37,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:11:37,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:11:37,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:11:37,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 122 transitions, 1195 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 22:11:37,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:37,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:11:37,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:38,989 INFO L124 PetriNetUnfolderBase]: 4067/5961 cut-off events. [2024-06-27 22:11:38,990 INFO L125 PetriNetUnfolderBase]: For 38513/38519 co-relation queries the response was YES. [2024-06-27 22:11:39,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25188 conditions, 5961 events. 4067/5961 cut-off events. For 38513/38519 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 32743 event pairs, 1122 based on Foata normal form. 6/5925 useless extension candidates. Maximal degree in co-relation 25138. Up to 5548 conditions per place. [2024-06-27 22:11:39,034 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 103 selfloop transitions, 51 changer transitions 0/164 dead transitions. [2024-06-27 22:11:39,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 164 transitions, 1673 flow [2024-06-27 22:11:39,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:11:39,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:11:39,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 22:11:39,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5562310030395137 [2024-06-27 22:11:39,036 INFO L175 Difference]: Start difference. First operand has 105 places, 122 transitions, 1195 flow. Second operand 7 states and 183 transitions. [2024-06-27 22:11:39,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 164 transitions, 1673 flow [2024-06-27 22:11:39,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 164 transitions, 1592 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 22:11:39,112 INFO L231 Difference]: Finished difference. Result has 109 places, 122 transitions, 1226 flow [2024-06-27 22:11:39,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1226, PETRI_PLACES=109, PETRI_TRANSITIONS=122} [2024-06-27 22:11:39,113 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 56 predicate places. [2024-06-27 22:11:39,113 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 122 transitions, 1226 flow [2024-06-27 22:11:39,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 22:11:39,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:39,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:39,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:11:39,114 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:39,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:39,114 INFO L85 PathProgramCache]: Analyzing trace with hash 66221917, now seen corresponding path program 4 times [2024-06-27 22:11:39,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:39,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119496747] [2024-06-27 22:11:39,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:39,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:40,330 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 22:11:40,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:40,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119496747] [2024-06-27 22:11:40,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119496747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:40,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:40,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:11:40,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392896621] [2024-06-27 22:11:40,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:40,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:11:40,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:40,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:11:40,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:11:40,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:11:40,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 122 transitions, 1226 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 22:11:40,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:40,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:11:40,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:41,531 INFO L124 PetriNetUnfolderBase]: 4200/6168 cut-off events. [2024-06-27 22:11:41,531 INFO L125 PetriNetUnfolderBase]: For 42425/42427 co-relation queries the response was YES. [2024-06-27 22:11:41,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26263 conditions, 6168 events. 4200/6168 cut-off events. For 42425/42427 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 33996 event pairs, 1117 based on Foata normal form. 4/6113 useless extension candidates. Maximal degree in co-relation 26210. Up to 5840 conditions per place. [2024-06-27 22:11:41,571 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 138 selfloop transitions, 44 changer transitions 0/192 dead transitions. [2024-06-27 22:11:41,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 192 transitions, 1896 flow [2024-06-27 22:11:41,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:11:41,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:11:41,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-27 22:11:41,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5558510638297872 [2024-06-27 22:11:41,573 INFO L175 Difference]: Start difference. First operand has 109 places, 122 transitions, 1226 flow. Second operand 8 states and 209 transitions. [2024-06-27 22:11:41,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 192 transitions, 1896 flow [2024-06-27 22:11:41,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 192 transitions, 1801 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 22:11:41,652 INFO L231 Difference]: Finished difference. Result has 114 places, 143 transitions, 1445 flow [2024-06-27 22:11:41,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1445, PETRI_PLACES=114, PETRI_TRANSITIONS=143} [2024-06-27 22:11:41,652 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 61 predicate places. [2024-06-27 22:11:41,653 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 143 transitions, 1445 flow [2024-06-27 22:11:41,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 22:11:41,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:41,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:41,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:11:41,653 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:41,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:41,654 INFO L85 PathProgramCache]: Analyzing trace with hash 9143639, now seen corresponding path program 5 times [2024-06-27 22:11:41,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:41,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79767168] [2024-06-27 22:11:41,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:41,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:42,542 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 22:11:42,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:42,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79767168] [2024-06-27 22:11:42,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79767168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:42,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:42,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:11:42,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352242120] [2024-06-27 22:11:42,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:42,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:11:42,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:42,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:11:42,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:11:42,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:11:42,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 143 transitions, 1445 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 22:11:42,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:42,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:11:42,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:43,796 INFO L124 PetriNetUnfolderBase]: 4423/6482 cut-off events. [2024-06-27 22:11:43,796 INFO L125 PetriNetUnfolderBase]: For 47570/47574 co-relation queries the response was YES. [2024-06-27 22:11:43,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28563 conditions, 6482 events. 4423/6482 cut-off events. For 47570/47574 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 35668 event pairs, 1113 based on Foata normal form. 6/6385 useless extension candidates. Maximal degree in co-relation 28507. Up to 6022 conditions per place. [2024-06-27 22:11:43,836 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 150 selfloop transitions, 85 changer transitions 0/245 dead transitions. [2024-06-27 22:11:43,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 245 transitions, 2528 flow [2024-06-27 22:11:43,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:11:43,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:11:43,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-06-27 22:11:43,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.551063829787234 [2024-06-27 22:11:43,838 INFO L175 Difference]: Start difference. First operand has 114 places, 143 transitions, 1445 flow. Second operand 10 states and 259 transitions. [2024-06-27 22:11:43,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 245 transitions, 2528 flow [2024-06-27 22:11:43,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 245 transitions, 2378 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-06-27 22:11:43,945 INFO L231 Difference]: Finished difference. Result has 123 places, 181 transitions, 1968 flow [2024-06-27 22:11:43,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1968, PETRI_PLACES=123, PETRI_TRANSITIONS=181} [2024-06-27 22:11:43,946 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 70 predicate places. [2024-06-27 22:11:43,946 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 181 transitions, 1968 flow [2024-06-27 22:11:43,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 22:11:43,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:43,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:43,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:11:43,947 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:43,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:43,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1094795547, now seen corresponding path program 6 times [2024-06-27 22:11:43,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:43,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395607734] [2024-06-27 22:11:43,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:43,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:45,125 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 22:11:45,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:45,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395607734] [2024-06-27 22:11:45,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395607734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:45,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:45,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:11:45,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955199472] [2024-06-27 22:11:45,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:45,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:11:45,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:45,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:11:45,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:11:45,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:11:45,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 181 transitions, 1968 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 22:11:45,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:45,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:11:45,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:46,363 INFO L124 PetriNetUnfolderBase]: 4504/6634 cut-off events. [2024-06-27 22:11:46,364 INFO L125 PetriNetUnfolderBase]: For 54306/54315 co-relation queries the response was YES. [2024-06-27 22:11:46,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30006 conditions, 6634 events. 4504/6634 cut-off events. For 54306/54315 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 36825 event pairs, 1068 based on Foata normal form. 8/6510 useless extension candidates. Maximal degree in co-relation 29947. Up to 5918 conditions per place. [2024-06-27 22:11:46,502 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 111 selfloop transitions, 124 changer transitions 0/245 dead transitions. [2024-06-27 22:11:46,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 245 transitions, 2770 flow [2024-06-27 22:11:46,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:11:46,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:11:46,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-27 22:11:46,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5718085106382979 [2024-06-27 22:11:46,504 INFO L175 Difference]: Start difference. First operand has 123 places, 181 transitions, 1968 flow. Second operand 8 states and 215 transitions. [2024-06-27 22:11:46,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 245 transitions, 2770 flow [2024-06-27 22:11:46,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 245 transitions, 2502 flow, removed 69 selfloop flow, removed 7 redundant places. [2024-06-27 22:11:46,595 INFO L231 Difference]: Finished difference. Result has 125 places, 197 transitions, 2161 flow [2024-06-27 22:11:46,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1724, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2161, PETRI_PLACES=125, PETRI_TRANSITIONS=197} [2024-06-27 22:11:46,596 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 72 predicate places. [2024-06-27 22:11:46,596 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 197 transitions, 2161 flow [2024-06-27 22:11:46,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 22:11:46,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:46,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:46,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:11:46,597 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:46,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:46,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1094795361, now seen corresponding path program 4 times [2024-06-27 22:11:46,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:46,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453137968] [2024-06-27 22:11:46,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:46,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:48,154 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 22:11:48,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:48,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453137968] [2024-06-27 22:11:48,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453137968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:48,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:48,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:11:48,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160627355] [2024-06-27 22:11:48,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:48,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:11:48,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:48,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:11:48,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:11:48,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:11:48,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 197 transitions, 2161 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 22:11:48,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:48,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:11:48,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:49,527 INFO L124 PetriNetUnfolderBase]: 4587/6777 cut-off events. [2024-06-27 22:11:49,527 INFO L125 PetriNetUnfolderBase]: For 60259/60267 co-relation queries the response was YES. [2024-06-27 22:11:49,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31032 conditions, 6777 events. 4587/6777 cut-off events. For 60259/60267 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 37991 event pairs, 1164 based on Foata normal form. 5/6640 useless extension candidates. Maximal degree in co-relation 30973. Up to 6204 conditions per place. [2024-06-27 22:11:49,577 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 185 selfloop transitions, 64 changer transitions 0/259 dead transitions. [2024-06-27 22:11:49,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 259 transitions, 2987 flow [2024-06-27 22:11:49,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:11:49,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:11:49,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-27 22:11:49,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611702127659575 [2024-06-27 22:11:49,584 INFO L175 Difference]: Start difference. First operand has 125 places, 197 transitions, 2161 flow. Second operand 8 states and 211 transitions. [2024-06-27 22:11:49,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 259 transitions, 2987 flow [2024-06-27 22:11:49,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 259 transitions, 2712 flow, removed 61 selfloop flow, removed 4 redundant places. [2024-06-27 22:11:49,693 INFO L231 Difference]: Finished difference. Result has 130 places, 211 transitions, 2209 flow [2024-06-27 22:11:49,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1914, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2209, PETRI_PLACES=130, PETRI_TRANSITIONS=211} [2024-06-27 22:11:49,694 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 77 predicate places. [2024-06-27 22:11:49,694 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 211 transitions, 2209 flow [2024-06-27 22:11:49,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 22:11:49,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:49,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:49,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:11:49,694 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:49,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:49,694 INFO L85 PathProgramCache]: Analyzing trace with hash 657326685, now seen corresponding path program 1 times [2024-06-27 22:11:49,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:49,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152544052] [2024-06-27 22:11:49,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:49,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:51,608 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 22:11:51,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:51,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152544052] [2024-06-27 22:11:51,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152544052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:51,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:51,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:11:51,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898604634] [2024-06-27 22:11:51,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:51,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:11:51,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:51,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:11:51,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:11:51,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 22:11:51,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 211 transitions, 2209 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 22:11:51,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:51,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 22:11:51,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:52,838 INFO L124 PetriNetUnfolderBase]: 4154/6375 cut-off events. [2024-06-27 22:11:52,838 INFO L125 PetriNetUnfolderBase]: For 59271/59271 co-relation queries the response was YES. [2024-06-27 22:11:52,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28539 conditions, 6375 events. 4154/6375 cut-off events. For 59271/59271 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 37305 event pairs, 1011 based on Foata normal form. 7/6221 useless extension candidates. Maximal degree in co-relation 28478. Up to 5778 conditions per place. [2024-06-27 22:11:52,884 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 229 selfloop transitions, 22 changer transitions 1/263 dead transitions. [2024-06-27 22:11:52,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 263 transitions, 2973 flow [2024-06-27 22:11:52,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:11:52,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:11:52,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 22:11:52,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271867612293144 [2024-06-27 22:11:52,885 INFO L175 Difference]: Start difference. First operand has 130 places, 211 transitions, 2209 flow. Second operand 9 states and 223 transitions. [2024-06-27 22:11:52,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 263 transitions, 2973 flow [2024-06-27 22:11:52,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 263 transitions, 2891 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 22:11:52,983 INFO L231 Difference]: Finished difference. Result has 137 places, 220 transitions, 2277 flow [2024-06-27 22:11:52,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2127, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2277, PETRI_PLACES=137, PETRI_TRANSITIONS=220} [2024-06-27 22:11:52,984 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 84 predicate places. [2024-06-27 22:11:52,984 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 220 transitions, 2277 flow [2024-06-27 22:11:52,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 22:11:52,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:52,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:52,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:11:52,985 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:52,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:52,985 INFO L85 PathProgramCache]: Analyzing trace with hash 564105450, now seen corresponding path program 1 times [2024-06-27 22:11:52,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:52,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990658158] [2024-06-27 22:11:52,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:52,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:53,841 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 22:11:53,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:53,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990658158] [2024-06-27 22:11:53,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990658158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:53,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:53,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:11:53,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315263665] [2024-06-27 22:11:53,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:53,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:11:53,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:53,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:11:53,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:11:53,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 22:11:53,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 220 transitions, 2277 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:53,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:53,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 22:11:53,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:54,771 INFO L124 PetriNetUnfolderBase]: 4304/7093 cut-off events. [2024-06-27 22:11:54,771 INFO L125 PetriNetUnfolderBase]: For 74963/74964 co-relation queries the response was YES. [2024-06-27 22:11:54,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31398 conditions, 7093 events. 4304/7093 cut-off events. For 74963/74964 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 46358 event pairs, 1738 based on Foata normal form. 2/6755 useless extension candidates. Maximal degree in co-relation 31334. Up to 6084 conditions per place. [2024-06-27 22:11:54,816 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 198 selfloop transitions, 12 changer transitions 0/239 dead transitions. [2024-06-27 22:11:54,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 239 transitions, 2841 flow [2024-06-27 22:11:54,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:11:54,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:11:54,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-27 22:11:54,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234042553191489 [2024-06-27 22:11:54,817 INFO L175 Difference]: Start difference. First operand has 137 places, 220 transitions, 2277 flow. Second operand 5 states and 123 transitions. [2024-06-27 22:11:54,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 239 transitions, 2841 flow [2024-06-27 22:11:54,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 239 transitions, 2751 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 22:11:54,910 INFO L231 Difference]: Finished difference. Result has 137 places, 228 transitions, 2327 flow [2024-06-27 22:11:54,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2193, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2327, PETRI_PLACES=137, PETRI_TRANSITIONS=228} [2024-06-27 22:11:54,911 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 84 predicate places. [2024-06-27 22:11:54,911 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 228 transitions, 2327 flow [2024-06-27 22:11:54,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:54,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:54,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:54,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:11:54,911 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:54,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:54,912 INFO L85 PathProgramCache]: Analyzing trace with hash -468560089, now seen corresponding path program 1 times [2024-06-27 22:11:54,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:54,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415133282] [2024-06-27 22:11:54,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:54,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:56,710 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 22:11:56,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:56,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415133282] [2024-06-27 22:11:56,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415133282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:56,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:56,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:11:56,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000454307] [2024-06-27 22:11:56,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:56,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:11:56,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:56,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:11:56,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:11:56,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:11:56,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 228 transitions, 2327 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:11:56,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:56,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:11:56,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:58,233 INFO L124 PetriNetUnfolderBase]: 4679/7001 cut-off events. [2024-06-27 22:11:58,234 INFO L125 PetriNetUnfolderBase]: For 79680/79680 co-relation queries the response was YES. [2024-06-27 22:11:58,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33703 conditions, 7001 events. 4679/7001 cut-off events. For 79680/79680 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 39976 event pairs, 997 based on Foata normal form. 2/6815 useless extension candidates. Maximal degree in co-relation 33637. Up to 6369 conditions per place. [2024-06-27 22:11:58,280 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 201 selfloop transitions, 69 changer transitions 0/280 dead transitions. [2024-06-27 22:11:58,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 280 transitions, 3153 flow [2024-06-27 22:11:58,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:11:58,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:11:58,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 22:11:58,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271867612293144 [2024-06-27 22:11:58,281 INFO L175 Difference]: Start difference. First operand has 137 places, 228 transitions, 2327 flow. Second operand 9 states and 223 transitions. [2024-06-27 22:11:58,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 280 transitions, 3153 flow [2024-06-27 22:11:58,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 280 transitions, 3126 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-27 22:11:58,386 INFO L231 Difference]: Finished difference. Result has 145 places, 232 transitions, 2524 flow [2024-06-27 22:11:58,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2300, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2524, PETRI_PLACES=145, PETRI_TRANSITIONS=232} [2024-06-27 22:11:58,387 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 92 predicate places. [2024-06-27 22:11:58,387 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 232 transitions, 2524 flow [2024-06-27 22:11:58,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:11:58,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:58,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:58,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:11:58,387 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:58,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:58,388 INFO L85 PathProgramCache]: Analyzing trace with hash -187422374, now seen corresponding path program 1 times [2024-06-27 22:11:58,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:58,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13604616] [2024-06-27 22:11:58,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:58,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:58,446 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 22:11:58,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:58,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13604616] [2024-06-27 22:11:58,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13604616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:58,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:58,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:11:58,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096593860] [2024-06-27 22:11:58,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:58,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:11:58,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:58,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:11:58,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:11:58,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2024-06-27 22:11:58,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 232 transitions, 2524 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 22:11:58,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:58,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2024-06-27 22:11:58,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:59,003 INFO L124 PetriNetUnfolderBase]: 1932/3949 cut-off events. [2024-06-27 22:11:59,003 INFO L125 PetriNetUnfolderBase]: For 46480/46813 co-relation queries the response was YES. [2024-06-27 22:11:59,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15492 conditions, 3949 events. 1932/3949 cut-off events. For 46480/46813 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 29970 event pairs, 540 based on Foata normal form. 163/3803 useless extension candidates. Maximal degree in co-relation 15424. Up to 1984 conditions per place. [2024-06-27 22:11:59,033 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 68 selfloop transitions, 49 changer transitions 0/222 dead transitions. [2024-06-27 22:11:59,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 222 transitions, 2574 flow [2024-06-27 22:11:59,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:11:59,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:11:59,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-06-27 22:11:59,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7375886524822695 [2024-06-27 22:11:59,034 INFO L175 Difference]: Start difference. First operand has 145 places, 232 transitions, 2524 flow. Second operand 3 states and 104 transitions. [2024-06-27 22:11:59,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 222 transitions, 2574 flow [2024-06-27 22:11:59,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 222 transitions, 2387 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 22:11:59,080 INFO L231 Difference]: Finished difference. Result has 137 places, 213 transitions, 2216 flow [2024-06-27 22:11:59,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2118, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2216, PETRI_PLACES=137, PETRI_TRANSITIONS=213} [2024-06-27 22:11:59,081 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 84 predicate places. [2024-06-27 22:11:59,081 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 213 transitions, 2216 flow [2024-06-27 22:11:59,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 22:11:59,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:59,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:59,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:11:59,082 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:11:59,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:59,082 INFO L85 PathProgramCache]: Analyzing trace with hash 401236689, now seen corresponding path program 2 times [2024-06-27 22:11:59,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:59,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923819084] [2024-06-27 22:11:59,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:59,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:00,694 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 22:12:00,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:00,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923819084] [2024-06-27 22:12:00,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923819084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:00,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:00,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:12:00,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709955225] [2024-06-27 22:12:00,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:00,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:12:00,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:00,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:12:00,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:12:00,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:12:00,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 213 transitions, 2216 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:00,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:00,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:12:00,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:02,094 INFO L124 PetriNetUnfolderBase]: 4380/6624 cut-off events. [2024-06-27 22:12:02,094 INFO L125 PetriNetUnfolderBase]: For 81329/81332 co-relation queries the response was YES. [2024-06-27 22:12:02,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31972 conditions, 6624 events. 4380/6624 cut-off events. For 81329/81332 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 38161 event pairs, 988 based on Foata normal form. 3/6564 useless extension candidates. Maximal degree in co-relation 31906. Up to 5353 conditions per place. [2024-06-27 22:12:02,145 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 159 selfloop transitions, 120 changer transitions 7/296 dead transitions. [2024-06-27 22:12:02,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 296 transitions, 3614 flow [2024-06-27 22:12:02,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:12:02,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:12:02,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-27 22:12:02,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-06-27 22:12:02,147 INFO L175 Difference]: Start difference. First operand has 137 places, 213 transitions, 2216 flow. Second operand 9 states and 243 transitions. [2024-06-27 22:12:02,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 296 transitions, 3614 flow [2024-06-27 22:12:02,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 296 transitions, 3508 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:12:02,277 INFO L231 Difference]: Finished difference. Result has 145 places, 228 transitions, 2593 flow [2024-06-27 22:12:02,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2118, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2593, PETRI_PLACES=145, PETRI_TRANSITIONS=228} [2024-06-27 22:12:02,278 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 92 predicate places. [2024-06-27 22:12:02,278 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 228 transitions, 2593 flow [2024-06-27 22:12:02,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:02,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:02,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:02,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:12:02,278 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:02,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:02,278 INFO L85 PathProgramCache]: Analyzing trace with hash 401242269, now seen corresponding path program 3 times [2024-06-27 22:12:02,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:02,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691523573] [2024-06-27 22:12:02,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:02,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:04,098 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 22:12:04,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:04,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691523573] [2024-06-27 22:12:04,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691523573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:04,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:04,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:12:04,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057347830] [2024-06-27 22:12:04,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:04,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:12:04,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:04,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:12:04,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:12:04,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:12:04,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 228 transitions, 2593 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:04,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:04,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:12:04,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:05,498 INFO L124 PetriNetUnfolderBase]: 3812/5825 cut-off events. [2024-06-27 22:12:05,498 INFO L125 PetriNetUnfolderBase]: For 87490/87493 co-relation queries the response was YES. [2024-06-27 22:12:05,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30418 conditions, 5825 events. 3812/5825 cut-off events. For 87490/87493 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 33541 event pairs, 877 based on Foata normal form. 2/5765 useless extension candidates. Maximal degree in co-relation 30349. Up to 4679 conditions per place. [2024-06-27 22:12:05,544 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 150 selfloop transitions, 122 changer transitions 0/282 dead transitions. [2024-06-27 22:12:05,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 282 transitions, 3637 flow [2024-06-27 22:12:05,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:12:05,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:12:05,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-27 22:12:05,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611702127659575 [2024-06-27 22:12:05,546 INFO L175 Difference]: Start difference. First operand has 145 places, 228 transitions, 2593 flow. Second operand 8 states and 211 transitions. [2024-06-27 22:12:05,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 282 transitions, 3637 flow [2024-06-27 22:12:05,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 282 transitions, 3534 flow, removed 49 selfloop flow, removed 1 redundant places. [2024-06-27 22:12:05,654 INFO L231 Difference]: Finished difference. Result has 151 places, 228 transitions, 2746 flow [2024-06-27 22:12:05,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2490, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2746, PETRI_PLACES=151, PETRI_TRANSITIONS=228} [2024-06-27 22:12:05,655 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 98 predicate places. [2024-06-27 22:12:05,655 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 228 transitions, 2746 flow [2024-06-27 22:12:05,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:05,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:05,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:05,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:12:05,656 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:05,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:05,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1105342029, now seen corresponding path program 4 times [2024-06-27 22:12:05,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:05,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637793462] [2024-06-27 22:12:05,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:05,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:07,117 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 22:12:07,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:07,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637793462] [2024-06-27 22:12:07,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637793462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:07,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:07,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:12:07,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209309996] [2024-06-27 22:12:07,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:07,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:12:07,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:07,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:12:07,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:12:07,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:12:07,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 228 transitions, 2746 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:07,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:07,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:12:07,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:08,519 INFO L124 PetriNetUnfolderBase]: 3835/5811 cut-off events. [2024-06-27 22:12:08,519 INFO L125 PetriNetUnfolderBase]: For 94721/94721 co-relation queries the response was YES. [2024-06-27 22:12:08,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31332 conditions, 5811 events. 3835/5811 cut-off events. For 94721/94721 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 32870 event pairs, 721 based on Foata normal form. 2/5765 useless extension candidates. Maximal degree in co-relation 31259. Up to 4703 conditions per place. [2024-06-27 22:12:08,570 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 150 selfloop transitions, 122 changer transitions 0/282 dead transitions. [2024-06-27 22:12:08,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 282 transitions, 3836 flow [2024-06-27 22:12:08,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:12:08,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:12:08,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-27 22:12:08,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-27 22:12:08,572 INFO L175 Difference]: Start difference. First operand has 151 places, 228 transitions, 2746 flow. Second operand 8 states and 208 transitions. [2024-06-27 22:12:08,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 282 transitions, 3836 flow [2024-06-27 22:12:08,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 282 transitions, 3593 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 22:12:08,680 INFO L231 Difference]: Finished difference. Result has 154 places, 231 transitions, 2814 flow [2024-06-27 22:12:08,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2509, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2814, PETRI_PLACES=154, PETRI_TRANSITIONS=231} [2024-06-27 22:12:08,681 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 101 predicate places. [2024-06-27 22:12:08,681 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 231 transitions, 2814 flow [2024-06-27 22:12:08,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:08,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:08,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:08,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:12:08,682 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:08,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:08,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1604703743, now seen corresponding path program 5 times [2024-06-27 22:12:08,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:08,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237202975] [2024-06-27 22:12:08,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:08,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:10,637 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 22:12:10,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:10,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237202975] [2024-06-27 22:12:10,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237202975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:10,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:10,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:12:10,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241395064] [2024-06-27 22:12:10,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:10,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:12:10,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:10,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:12:10,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:12:10,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:12:10,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 231 transitions, 2814 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:10,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:10,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:12:10,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:12,107 INFO L124 PetriNetUnfolderBase]: 3858/5864 cut-off events. [2024-06-27 22:12:12,107 INFO L125 PetriNetUnfolderBase]: For 100145/100145 co-relation queries the response was YES. [2024-06-27 22:12:12,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31876 conditions, 5864 events. 3858/5864 cut-off events. For 100145/100145 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 33391 event pairs, 724 based on Foata normal form. 2/5813 useless extension candidates. Maximal degree in co-relation 31801. Up to 4727 conditions per place. [2024-06-27 22:12:12,159 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 128 selfloop transitions, 141 changer transitions 0/279 dead transitions. [2024-06-27 22:12:12,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 279 transitions, 3752 flow [2024-06-27 22:12:12,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:12:12,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:12:12,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 22:12:12,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5452127659574468 [2024-06-27 22:12:12,160 INFO L175 Difference]: Start difference. First operand has 154 places, 231 transitions, 2814 flow. Second operand 8 states and 205 transitions. [2024-06-27 22:12:12,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 279 transitions, 3752 flow [2024-06-27 22:12:12,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 279 transitions, 3552 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 22:12:12,268 INFO L231 Difference]: Finished difference. Result has 158 places, 234 transitions, 2963 flow [2024-06-27 22:12:12,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2623, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2963, PETRI_PLACES=158, PETRI_TRANSITIONS=234} [2024-06-27 22:12:12,269 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 105 predicate places. [2024-06-27 22:12:12,269 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 234 transitions, 2963 flow [2024-06-27 22:12:12,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:12,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:12,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:12,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:12:12,270 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:12,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:12,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1597352093, now seen corresponding path program 6 times [2024-06-27 22:12:12,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:12,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819655263] [2024-06-27 22:12:12,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:12,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:13,966 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 22:12:13,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:13,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819655263] [2024-06-27 22:12:13,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819655263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:13,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:13,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:12:13,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339030834] [2024-06-27 22:12:13,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:13,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:12:13,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:13,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:12:13,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:12:14,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:12:14,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 234 transitions, 2963 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:14,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:14,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:12:14,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:15,322 INFO L124 PetriNetUnfolderBase]: 3853/5845 cut-off events. [2024-06-27 22:12:15,322 INFO L125 PetriNetUnfolderBase]: For 104992/104992 co-relation queries the response was YES. [2024-06-27 22:12:15,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32094 conditions, 5845 events. 3853/5845 cut-off events. For 104992/104992 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 33143 event pairs, 721 based on Foata normal form. 2/5799 useless extension candidates. Maximal degree in co-relation 32016. Up to 4722 conditions per place. [2024-06-27 22:12:15,367 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 153 selfloop transitions, 123 changer transitions 0/286 dead transitions. [2024-06-27 22:12:15,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 286 transitions, 3945 flow [2024-06-27 22:12:15,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:12:15,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:12:15,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-27 22:12:15,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.550531914893617 [2024-06-27 22:12:15,369 INFO L175 Difference]: Start difference. First operand has 158 places, 234 transitions, 2963 flow. Second operand 8 states and 207 transitions. [2024-06-27 22:12:15,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 286 transitions, 3945 flow [2024-06-27 22:12:15,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 286 transitions, 3696 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-27 22:12:15,536 INFO L231 Difference]: Finished difference. Result has 161 places, 234 transitions, 2971 flow [2024-06-27 22:12:15,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2714, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2971, PETRI_PLACES=161, PETRI_TRANSITIONS=234} [2024-06-27 22:12:15,537 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 108 predicate places. [2024-06-27 22:12:15,537 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 234 transitions, 2971 flow [2024-06-27 22:12:15,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:15,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:15,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:15,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:12:15,538 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:15,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:15,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1915401375, now seen corresponding path program 7 times [2024-06-27 22:12:15,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:15,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041819776] [2024-06-27 22:12:15,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:15,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:16,968 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 22:12:16,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:16,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041819776] [2024-06-27 22:12:16,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041819776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:16,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:16,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:12:16,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676457301] [2024-06-27 22:12:16,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:16,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:12:16,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:16,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:12:16,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:12:17,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:12:17,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 234 transitions, 2971 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:17,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:17,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:12:17,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:18,429 INFO L124 PetriNetUnfolderBase]: 3964/6128 cut-off events. [2024-06-27 22:12:18,429 INFO L125 PetriNetUnfolderBase]: For 114912/114914 co-relation queries the response was YES. [2024-06-27 22:12:18,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33359 conditions, 6128 events. 3964/6128 cut-off events. For 114912/114914 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 36039 event pairs, 848 based on Foata normal form. 4/6073 useless extension candidates. Maximal degree in co-relation 33279. Up to 5313 conditions per place. [2024-06-27 22:12:18,483 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 214 selfloop transitions, 94 changer transitions 0/318 dead transitions. [2024-06-27 22:12:18,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 318 transitions, 4339 flow [2024-06-27 22:12:18,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:12:18,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:12:18,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 276 transitions. [2024-06-27 22:12:18,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338491295938105 [2024-06-27 22:12:18,485 INFO L175 Difference]: Start difference. First operand has 161 places, 234 transitions, 2971 flow. Second operand 11 states and 276 transitions. [2024-06-27 22:12:18,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 318 transitions, 4339 flow [2024-06-27 22:12:18,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 318 transitions, 4143 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 22:12:18,669 INFO L231 Difference]: Finished difference. Result has 169 places, 251 transitions, 3274 flow [2024-06-27 22:12:18,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2790, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3274, PETRI_PLACES=169, PETRI_TRANSITIONS=251} [2024-06-27 22:12:18,670 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 116 predicate places. [2024-06-27 22:12:18,670 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 251 transitions, 3274 flow [2024-06-27 22:12:18,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:18,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:18,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:18,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:12:18,671 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:18,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:18,671 INFO L85 PathProgramCache]: Analyzing trace with hash 420933661, now seen corresponding path program 8 times [2024-06-27 22:12:18,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:18,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931012105] [2024-06-27 22:12:18,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:18,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:19,908 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 22:12:19,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:19,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931012105] [2024-06-27 22:12:19,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931012105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:19,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:19,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:12:19,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439352181] [2024-06-27 22:12:19,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:19,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:12:19,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:19,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:12:19,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:12:20,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:12:20,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 251 transitions, 3274 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:20,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:20,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:12:20,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:21,367 INFO L124 PetriNetUnfolderBase]: 4016/6241 cut-off events. [2024-06-27 22:12:21,367 INFO L125 PetriNetUnfolderBase]: For 123904/123906 co-relation queries the response was YES. [2024-06-27 22:12:21,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34121 conditions, 6241 events. 4016/6241 cut-off events. For 123904/123906 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 36966 event pairs, 871 based on Foata normal form. 5/6177 useless extension candidates. Maximal degree in co-relation 34038. Up to 5482 conditions per place. [2024-06-27 22:12:21,421 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 222 selfloop transitions, 81 changer transitions 0/313 dead transitions. [2024-06-27 22:12:21,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 313 transitions, 4338 flow [2024-06-27 22:12:21,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:12:21,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:12:21,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-27 22:12:21,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 22:12:21,422 INFO L175 Difference]: Start difference. First operand has 169 places, 251 transitions, 3274 flow. Second operand 9 states and 225 transitions. [2024-06-27 22:12:21,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 313 transitions, 4338 flow [2024-06-27 22:12:21,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 313 transitions, 4172 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-27 22:12:21,597 INFO L231 Difference]: Finished difference. Result has 173 places, 263 transitions, 3522 flow [2024-06-27 22:12:21,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3142, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3522, PETRI_PLACES=173, PETRI_TRANSITIONS=263} [2024-06-27 22:12:21,598 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 120 predicate places. [2024-06-27 22:12:21,598 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 263 transitions, 3522 flow [2024-06-27 22:12:21,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:21,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:21,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:21,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:12:21,599 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:21,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:21,599 INFO L85 PathProgramCache]: Analyzing trace with hash 421077811, now seen corresponding path program 9 times [2024-06-27 22:12:21,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:21,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799888855] [2024-06-27 22:12:21,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:21,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:22,983 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 22:12:22,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:22,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799888855] [2024-06-27 22:12:22,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799888855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:22,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:22,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:12:22,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093697863] [2024-06-27 22:12:22,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:22,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:12:22,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:22,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:12:22,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:12:23,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:12:23,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 263 transitions, 3522 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:23,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:23,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:12:23,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:24,605 INFO L124 PetriNetUnfolderBase]: 4206/6494 cut-off events. [2024-06-27 22:12:24,605 INFO L125 PetriNetUnfolderBase]: For 131490/131493 co-relation queries the response was YES. [2024-06-27 22:12:24,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35916 conditions, 6494 events. 4206/6494 cut-off events. For 131490/131493 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 38475 event pairs, 842 based on Foata normal form. 3/6435 useless extension candidates. Maximal degree in co-relation 35831. Up to 5084 conditions per place. [2024-06-27 22:12:24,652 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 150 selfloop transitions, 196 changer transitions 0/356 dead transitions. [2024-06-27 22:12:24,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 356 transitions, 5016 flow [2024-06-27 22:12:24,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:12:24,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:12:24,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-06-27 22:12:24,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5468085106382978 [2024-06-27 22:12:24,654 INFO L175 Difference]: Start difference. First operand has 173 places, 263 transitions, 3522 flow. Second operand 10 states and 257 transitions. [2024-06-27 22:12:24,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 356 transitions, 5016 flow [2024-06-27 22:12:24,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 356 transitions, 4888 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 22:12:24,901 INFO L231 Difference]: Finished difference. Result has 179 places, 299 transitions, 4269 flow [2024-06-27 22:12:24,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3394, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4269, PETRI_PLACES=179, PETRI_TRANSITIONS=299} [2024-06-27 22:12:24,901 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 126 predicate places. [2024-06-27 22:12:24,902 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 299 transitions, 4269 flow [2024-06-27 22:12:24,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:24,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:24,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:24,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:12:24,902 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:24,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:24,902 INFO L85 PathProgramCache]: Analyzing trace with hash 421083391, now seen corresponding path program 10 times [2024-06-27 22:12:24,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:24,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190248826] [2024-06-27 22:12:24,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:24,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:26,541 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 22:12:26,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:26,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190248826] [2024-06-27 22:12:26,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190248826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:26,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:26,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:12:26,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304891671] [2024-06-27 22:12:26,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:26,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:12:26,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:26,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:12:26,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:12:26,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:12:26,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 299 transitions, 4269 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:26,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:26,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:12:26,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:28,128 INFO L124 PetriNetUnfolderBase]: 4201/6487 cut-off events. [2024-06-27 22:12:28,129 INFO L125 PetriNetUnfolderBase]: For 150431/150434 co-relation queries the response was YES. [2024-06-27 22:12:28,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38431 conditions, 6487 events. 4201/6487 cut-off events. For 150431/150434 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 38375 event pairs, 842 based on Foata normal form. 2/6427 useless extension candidates. Maximal degree in co-relation 38343. Up to 5099 conditions per place. [2024-06-27 22:12:28,188 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 144 selfloop transitions, 196 changer transitions 0/350 dead transitions. [2024-06-27 22:12:28,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 350 transitions, 5269 flow [2024-06-27 22:12:28,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:12:28,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:12:28,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-27 22:12:28,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5484633569739953 [2024-06-27 22:12:28,189 INFO L175 Difference]: Start difference. First operand has 179 places, 299 transitions, 4269 flow. Second operand 9 states and 232 transitions. [2024-06-27 22:12:28,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 350 transitions, 5269 flow [2024-06-27 22:12:28,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 350 transitions, 4590 flow, removed 77 selfloop flow, removed 7 redundant places. [2024-06-27 22:12:28,644 INFO L231 Difference]: Finished difference. Result has 181 places, 299 transitions, 4014 flow [2024-06-27 22:12:28,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3610, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4014, PETRI_PLACES=181, PETRI_TRANSITIONS=299} [2024-06-27 22:12:28,644 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 128 predicate places. [2024-06-27 22:12:28,644 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 299 transitions, 4014 flow [2024-06-27 22:12:28,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:28,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:28,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:28,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:12:28,645 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:28,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:28,645 INFO L85 PathProgramCache]: Analyzing trace with hash 307400933, now seen corresponding path program 1 times [2024-06-27 22:12:28,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:28,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257760554] [2024-06-27 22:12:28,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:28,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:29,948 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 22:12:29,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:29,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257760554] [2024-06-27 22:12:29,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257760554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:29,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:29,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:12:29,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495164847] [2024-06-27 22:12:29,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:29,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:12:29,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:29,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:12:29,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:12:30,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 22:12:30,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 299 transitions, 4014 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 22:12:30,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:30,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 22:12:30,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:30,949 INFO L124 PetriNetUnfolderBase]: 3775/6260 cut-off events. [2024-06-27 22:12:30,949 INFO L125 PetriNetUnfolderBase]: For 132938/132938 co-relation queries the response was YES. [2024-06-27 22:12:30,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34533 conditions, 6260 events. 3775/6260 cut-off events. For 132938/132938 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 40247 event pairs, 1107 based on Foata normal form. 2/6135 useless extension candidates. Maximal degree in co-relation 34445. Up to 5357 conditions per place. [2024-06-27 22:12:31,011 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 293 selfloop transitions, 15 changer transitions 0/319 dead transitions. [2024-06-27 22:12:31,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 319 transitions, 4750 flow [2024-06-27 22:12:31,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:12:31,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:12:31,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-27 22:12:31,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 22:12:31,012 INFO L175 Difference]: Start difference. First operand has 181 places, 299 transitions, 4014 flow. Second operand 6 states and 144 transitions. [2024-06-27 22:12:31,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 319 transitions, 4750 flow [2024-06-27 22:12:31,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 319 transitions, 4350 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 22:12:31,294 INFO L231 Difference]: Finished difference. Result has 179 places, 302 transitions, 3680 flow [2024-06-27 22:12:31,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3614, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3680, PETRI_PLACES=179, PETRI_TRANSITIONS=302} [2024-06-27 22:12:31,295 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 126 predicate places. [2024-06-27 22:12:31,295 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 302 transitions, 3680 flow [2024-06-27 22:12:31,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 22:12:31,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:31,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:31,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:12:31,295 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:31,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:31,296 INFO L85 PathProgramCache]: Analyzing trace with hash -561859228, now seen corresponding path program 1 times [2024-06-27 22:12:31,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:31,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371428127] [2024-06-27 22:12:31,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:31,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:32,712 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 22:12:32,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:32,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371428127] [2024-06-27 22:12:32,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371428127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:32,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:32,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:12:32,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564862369] [2024-06-27 22:12:32,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:32,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:12:32,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:32,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:12:32,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:12:32,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:12:32,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 302 transitions, 3680 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:32,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:32,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:12:32,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:34,291 INFO L124 PetriNetUnfolderBase]: 4244/6567 cut-off events. [2024-06-27 22:12:34,291 INFO L125 PetriNetUnfolderBase]: For 149148/149148 co-relation queries the response was YES. [2024-06-27 22:12:34,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37366 conditions, 6567 events. 4244/6567 cut-off events. For 149148/149148 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 39018 event pairs, 761 based on Foata normal form. 4/6492 useless extension candidates. Maximal degree in co-relation 37277. Up to 5806 conditions per place. [2024-06-27 22:12:34,339 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 277 selfloop transitions, 61 changer transitions 0/348 dead transitions. [2024-06-27 22:12:34,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 348 transitions, 4643 flow [2024-06-27 22:12:34,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:12:34,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:12:34,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-27 22:12:34,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059101654846335 [2024-06-27 22:12:34,341 INFO L175 Difference]: Start difference. First operand has 179 places, 302 transitions, 3680 flow. Second operand 9 states and 214 transitions. [2024-06-27 22:12:34,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 348 transitions, 4643 flow [2024-06-27 22:12:34,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 348 transitions, 4599 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 22:12:34,597 INFO L231 Difference]: Finished difference. Result has 184 places, 304 transitions, 3810 flow [2024-06-27 22:12:34,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3636, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3810, PETRI_PLACES=184, PETRI_TRANSITIONS=304} [2024-06-27 22:12:34,598 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 131 predicate places. [2024-06-27 22:12:34,598 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 304 transitions, 3810 flow [2024-06-27 22:12:34,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:34,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:34,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:34,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:12:34,598 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:34,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:34,599 INFO L85 PathProgramCache]: Analyzing trace with hash -564716188, now seen corresponding path program 2 times [2024-06-27 22:12:34,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:34,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910354431] [2024-06-27 22:12:34,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:34,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:35,983 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 22:12:35,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:35,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910354431] [2024-06-27 22:12:35,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910354431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:35,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:35,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:12:35,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152220656] [2024-06-27 22:12:35,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:35,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:12:35,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:35,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:12:35,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:12:36,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:12:36,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 304 transitions, 3810 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:36,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:36,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:12:36,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:37,861 INFO L124 PetriNetUnfolderBase]: 4319/6684 cut-off events. [2024-06-27 22:12:37,861 INFO L125 PetriNetUnfolderBase]: For 159413/159413 co-relation queries the response was YES. [2024-06-27 22:12:37,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38612 conditions, 6684 events. 4319/6684 cut-off events. For 159413/159413 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 39969 event pairs, 746 based on Foata normal form. 4/6607 useless extension candidates. Maximal degree in co-relation 38522. Up to 5820 conditions per place. [2024-06-27 22:12:37,929 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 287 selfloop transitions, 65 changer transitions 0/362 dead transitions. [2024-06-27 22:12:37,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 362 transitions, 4871 flow [2024-06-27 22:12:37,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:12:37,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:12:37,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 240 transitions. [2024-06-27 22:12:37,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 22:12:37,930 INFO L175 Difference]: Start difference. First operand has 184 places, 304 transitions, 3810 flow. Second operand 10 states and 240 transitions. [2024-06-27 22:12:37,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 362 transitions, 4871 flow [2024-06-27 22:12:38,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 362 transitions, 4735 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 22:12:38,225 INFO L231 Difference]: Finished difference. Result has 189 places, 308 transitions, 3881 flow [2024-06-27 22:12:38,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3674, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3881, PETRI_PLACES=189, PETRI_TRANSITIONS=308} [2024-06-27 22:12:38,225 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 136 predicate places. [2024-06-27 22:12:38,225 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 308 transitions, 3881 flow [2024-06-27 22:12:38,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:38,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:38,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:38,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:12:38,226 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:38,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:38,226 INFO L85 PathProgramCache]: Analyzing trace with hash -446568058, now seen corresponding path program 3 times [2024-06-27 22:12:38,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:38,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037147676] [2024-06-27 22:12:38,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:38,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:39,570 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 22:12:39,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:39,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037147676] [2024-06-27 22:12:39,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037147676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:39,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:39,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:12:39,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472016723] [2024-06-27 22:12:39,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:39,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:12:39,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:39,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:12:39,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:12:39,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:12:39,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 308 transitions, 3881 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:39,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:39,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:12:39,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:41,130 INFO L124 PetriNetUnfolderBase]: 4356/6697 cut-off events. [2024-06-27 22:12:41,130 INFO L125 PetriNetUnfolderBase]: For 168963/168966 co-relation queries the response was YES. [2024-06-27 22:12:41,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39510 conditions, 6697 events. 4356/6697 cut-off events. For 168963/168966 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 39656 event pairs, 759 based on Foata normal form. 6/6640 useless extension candidates. Maximal degree in co-relation 39418. Up to 5753 conditions per place. [2024-06-27 22:12:41,195 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 246 selfloop transitions, 101 changer transitions 0/357 dead transitions. [2024-06-27 22:12:41,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 357 transitions, 4930 flow [2024-06-27 22:12:41,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:12:41,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:12:41,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-27 22:12:41,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130023640661938 [2024-06-27 22:12:41,197 INFO L175 Difference]: Start difference. First operand has 189 places, 308 transitions, 3881 flow. Second operand 9 states and 217 transitions. [2024-06-27 22:12:41,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 357 transitions, 4930 flow [2024-06-27 22:12:41,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 357 transitions, 4803 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 22:12:41,494 INFO L231 Difference]: Finished difference. Result has 192 places, 310 transitions, 4013 flow [2024-06-27 22:12:41,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3754, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4013, PETRI_PLACES=192, PETRI_TRANSITIONS=310} [2024-06-27 22:12:41,494 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 139 predicate places. [2024-06-27 22:12:41,494 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 310 transitions, 4013 flow [2024-06-27 22:12:41,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:41,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:41,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:41,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:12:41,495 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:41,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:41,495 INFO L85 PathProgramCache]: Analyzing trace with hash -804726720, now seen corresponding path program 1 times [2024-06-27 22:12:41,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:41,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130594337] [2024-06-27 22:12:41,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:41,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:43,327 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 22:12:43,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:43,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130594337] [2024-06-27 22:12:43,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130594337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:43,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:43,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:12:43,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058101958] [2024-06-27 22:12:43,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:43,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:12:43,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:43,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:12:43,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:12:43,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:12:43,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 310 transitions, 4013 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:43,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:43,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:12:43,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:44,908 INFO L124 PetriNetUnfolderBase]: 4393/6766 cut-off events. [2024-06-27 22:12:44,908 INFO L125 PetriNetUnfolderBase]: For 181401/181407 co-relation queries the response was YES. [2024-06-27 22:12:44,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40493 conditions, 6766 events. 4393/6766 cut-off events. For 181401/181407 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 40293 event pairs, 768 based on Foata normal form. 6/6710 useless extension candidates. Maximal degree in co-relation 40400. Up to 5961 conditions per place. [2024-06-27 22:12:44,975 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 283 selfloop transitions, 64 changer transitions 0/357 dead transitions. [2024-06-27 22:12:44,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 357 transitions, 5031 flow [2024-06-27 22:12:44,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:12:44,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:12:44,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-27 22:12:44,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508274231678487 [2024-06-27 22:12:44,976 INFO L175 Difference]: Start difference. First operand has 192 places, 310 transitions, 4013 flow. Second operand 9 states and 215 transitions. [2024-06-27 22:12:44,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 357 transitions, 5031 flow [2024-06-27 22:12:45,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 357 transitions, 4755 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 22:12:45,309 INFO L231 Difference]: Finished difference. Result has 193 places, 313 transitions, 3931 flow [2024-06-27 22:12:45,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3737, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3931, PETRI_PLACES=193, PETRI_TRANSITIONS=313} [2024-06-27 22:12:45,309 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 140 predicate places. [2024-06-27 22:12:45,310 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 313 transitions, 3931 flow [2024-06-27 22:12:45,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:45,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:45,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:45,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:12:45,310 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:45,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:45,310 INFO L85 PathProgramCache]: Analyzing trace with hash 928023049, now seen corresponding path program 1 times [2024-06-27 22:12:45,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:45,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502987301] [2024-06-27 22:12:45,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:45,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:46,080 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 22:12:46,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:46,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502987301] [2024-06-27 22:12:46,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502987301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:46,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:46,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:12:46,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723792452] [2024-06-27 22:12:46,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:46,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:12:46,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:46,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:12:46,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:12:46,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:12:46,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 313 transitions, 3931 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 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 22:12:46,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:46,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:12:46,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:47,258 INFO L124 PetriNetUnfolderBase]: 4417/7157 cut-off events. [2024-06-27 22:12:47,258 INFO L125 PetriNetUnfolderBase]: For 187000/187000 co-relation queries the response was YES. [2024-06-27 22:12:47,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41292 conditions, 7157 events. 4417/7157 cut-off events. For 187000/187000 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 45786 event pairs, 1086 based on Foata normal form. 2/6998 useless extension candidates. Maximal degree in co-relation 41199. Up to 6185 conditions per place. [2024-06-27 22:12:47,329 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 314 selfloop transitions, 44 changer transitions 0/368 dead transitions. [2024-06-27 22:12:47,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 368 transitions, 5333 flow [2024-06-27 22:12:47,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:12:47,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:12:47,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-27 22:12:47,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-27 22:12:47,331 INFO L175 Difference]: Start difference. First operand has 193 places, 313 transitions, 3931 flow. Second operand 6 states and 147 transitions. [2024-06-27 22:12:47,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 368 transitions, 5333 flow [2024-06-27 22:12:47,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 368 transitions, 5011 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-27 22:12:47,783 INFO L231 Difference]: Finished difference. Result has 191 places, 347 transitions, 4353 flow [2024-06-27 22:12:47,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3634, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4353, PETRI_PLACES=191, PETRI_TRANSITIONS=347} [2024-06-27 22:12:47,783 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 138 predicate places. [2024-06-27 22:12:47,783 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 347 transitions, 4353 flow [2024-06-27 22:12:47,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 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 22:12:47,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:47,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:47,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:12:47,784 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:47,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:47,784 INFO L85 PathProgramCache]: Analyzing trace with hash -2021869178, now seen corresponding path program 4 times [2024-06-27 22:12:47,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:47,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791076536] [2024-06-27 22:12:47,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:47,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:49,125 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 22:12:49,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:49,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791076536] [2024-06-27 22:12:49,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791076536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:49,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:49,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:12:49,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558608264] [2024-06-27 22:12:49,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:49,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:12:49,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:49,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:12:49,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:12:49,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:12:49,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 347 transitions, 4353 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:49,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:49,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:12:49,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:50,705 INFO L124 PetriNetUnfolderBase]: 4454/7465 cut-off events. [2024-06-27 22:12:50,706 INFO L125 PetriNetUnfolderBase]: For 196122/196122 co-relation queries the response was YES. [2024-06-27 22:12:50,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42871 conditions, 7465 events. 4454/7465 cut-off events. For 196122/196122 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 49141 event pairs, 937 based on Foata normal form. 4/7208 useless extension candidates. Maximal degree in co-relation 42775. Up to 5902 conditions per place. [2024-06-27 22:12:50,788 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 252 selfloop transitions, 131 changer transitions 0/393 dead transitions. [2024-06-27 22:12:50,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 393 transitions, 5477 flow [2024-06-27 22:12:50,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:12:50,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:12:50,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-27 22:12:50,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059101654846335 [2024-06-27 22:12:50,790 INFO L175 Difference]: Start difference. First operand has 191 places, 347 transitions, 4353 flow. Second operand 9 states and 214 transitions. [2024-06-27 22:12:50,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 393 transitions, 5477 flow [2024-06-27 22:12:51,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 393 transitions, 5402 flow, removed 35 selfloop flow, removed 1 redundant places. [2024-06-27 22:12:51,169 INFO L231 Difference]: Finished difference. Result has 199 places, 349 transitions, 4602 flow [2024-06-27 22:12:51,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4278, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4602, PETRI_PLACES=199, PETRI_TRANSITIONS=349} [2024-06-27 22:12:51,170 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 146 predicate places. [2024-06-27 22:12:51,170 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 349 transitions, 4602 flow [2024-06-27 22:12:51,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:51,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:51,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:51,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:12:51,170 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:51,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:51,171 INFO L85 PathProgramCache]: Analyzing trace with hash -274488116, now seen corresponding path program 2 times [2024-06-27 22:12:51,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:51,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286444682] [2024-06-27 22:12:51,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:51,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:52,930 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 22:12:52,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:52,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286444682] [2024-06-27 22:12:52,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286444682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:52,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:52,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:12:52,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792135829] [2024-06-27 22:12:52,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:52,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:12:52,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:52,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:12:52,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:12:53,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:12:53,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 349 transitions, 4602 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:53,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:53,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:12:53,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:54,714 INFO L124 PetriNetUnfolderBase]: 4491/7592 cut-off events. [2024-06-27 22:12:54,715 INFO L125 PetriNetUnfolderBase]: For 211360/211366 co-relation queries the response was YES. [2024-06-27 22:12:54,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44410 conditions, 7592 events. 4491/7592 cut-off events. For 211360/211366 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 50666 event pairs, 1025 based on Foata normal form. 8/7352 useless extension candidates. Maximal degree in co-relation 44311. Up to 6110 conditions per place. [2024-06-27 22:12:54,790 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 312 selfloop transitions, 74 changer transitions 0/396 dead transitions. [2024-06-27 22:12:54,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 396 transitions, 5714 flow [2024-06-27 22:12:54,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:12:54,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:12:54,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-27 22:12:54,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011820330969267 [2024-06-27 22:12:54,792 INFO L175 Difference]: Start difference. First operand has 199 places, 349 transitions, 4602 flow. Second operand 9 states and 212 transitions. [2024-06-27 22:12:54,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 396 transitions, 5714 flow [2024-06-27 22:12:55,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 396 transitions, 5283 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 22:12:55,107 INFO L231 Difference]: Finished difference. Result has 199 places, 352 transitions, 4396 flow [2024-06-27 22:12:55,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4171, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4396, PETRI_PLACES=199, PETRI_TRANSITIONS=352} [2024-06-27 22:12:55,107 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 146 predicate places. [2024-06-27 22:12:55,108 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 352 transitions, 4396 flow [2024-06-27 22:12:55,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:55,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:55,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:55,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:12:55,108 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:55,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:55,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1359349398, now seen corresponding path program 3 times [2024-06-27 22:12:55,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:55,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604585435] [2024-06-27 22:12:55,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:55,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:56,911 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 22:12:56,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:56,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604585435] [2024-06-27 22:12:56,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604585435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:56,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:56,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:12:56,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651360116] [2024-06-27 22:12:56,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:56,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:12:56,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:56,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:12:56,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:12:57,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:12:57,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 352 transitions, 4396 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:57,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:57,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:12:57,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:58,577 INFO L124 PetriNetUnfolderBase]: 4528/7644 cut-off events. [2024-06-27 22:12:58,577 INFO L125 PetriNetUnfolderBase]: For 217303/217309 co-relation queries the response was YES. [2024-06-27 22:12:58,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45011 conditions, 7644 events. 4528/7644 cut-off events. For 217303/217309 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 50933 event pairs, 1030 based on Foata normal form. 8/7399 useless extension candidates. Maximal degree in co-relation 44912. Up to 6163 conditions per place. [2024-06-27 22:12:58,660 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 323 selfloop transitions, 69 changer transitions 0/402 dead transitions. [2024-06-27 22:12:58,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 402 transitions, 5574 flow [2024-06-27 22:12:58,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:12:58,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:12:58,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-27 22:12:58,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-06-27 22:12:58,661 INFO L175 Difference]: Start difference. First operand has 199 places, 352 transitions, 4396 flow. Second operand 9 states and 213 transitions. [2024-06-27 22:12:58,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 402 transitions, 5574 flow [2024-06-27 22:12:59,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 402 transitions, 5375 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-27 22:12:59,052 INFO L231 Difference]: Finished difference. Result has 201 places, 354 transitions, 4397 flow [2024-06-27 22:12:59,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4197, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4397, PETRI_PLACES=201, PETRI_TRANSITIONS=354} [2024-06-27 22:12:59,053 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 148 predicate places. [2024-06-27 22:12:59,053 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 354 transitions, 4397 flow [2024-06-27 22:12:59,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:12:59,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:59,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:59,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:12:59,054 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:12:59,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:59,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1785212450, now seen corresponding path program 4 times [2024-06-27 22:12:59,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:59,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489195573] [2024-06-27 22:12:59,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:59,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:00,857 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 22:13:00,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:00,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489195573] [2024-06-27 22:13:00,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489195573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:00,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:00,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:13:00,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461673141] [2024-06-27 22:13:00,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:00,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:13:00,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:00,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:13:00,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:13:00,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:13:00,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 354 transitions, 4397 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:13:00,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:00,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:13:00,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:02,522 INFO L124 PetriNetUnfolderBase]: 4565/7689 cut-off events. [2024-06-27 22:13:02,522 INFO L125 PetriNetUnfolderBase]: For 227597/227603 co-relation queries the response was YES. [2024-06-27 22:13:02,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45704 conditions, 7689 events. 4565/7689 cut-off events. For 227597/227603 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 51234 event pairs, 927 based on Foata normal form. 8/7447 useless extension candidates. Maximal degree in co-relation 45604. Up to 6004 conditions per place. [2024-06-27 22:13:02,599 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 315 selfloop transitions, 83 changer transitions 0/408 dead transitions. [2024-06-27 22:13:02,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 408 transitions, 5779 flow [2024-06-27 22:13:02,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:13:02,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:13:02,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-27 22:13:02,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508274231678487 [2024-06-27 22:13:02,601 INFO L175 Difference]: Start difference. First operand has 201 places, 354 transitions, 4397 flow. Second operand 9 states and 215 transitions. [2024-06-27 22:13:02,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 408 transitions, 5779 flow [2024-06-27 22:13:02,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 408 transitions, 5561 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 22:13:03,000 INFO L231 Difference]: Finished difference. Result has 202 places, 360 transitions, 4508 flow [2024-06-27 22:13:03,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4179, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4508, PETRI_PLACES=202, PETRI_TRANSITIONS=360} [2024-06-27 22:13:03,000 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 149 predicate places. [2024-06-27 22:13:03,000 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 360 transitions, 4508 flow [2024-06-27 22:13:03,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:13:03,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:03,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:03,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:13:03,001 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:13:03,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:03,001 INFO L85 PathProgramCache]: Analyzing trace with hash 939480649, now seen corresponding path program 2 times [2024-06-27 22:13:03,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:03,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962379385] [2024-06-27 22:13:03,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:03,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:03,863 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 22:13:03,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:03,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962379385] [2024-06-27 22:13:03,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962379385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:03,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:03,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:13:03,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781020298] [2024-06-27 22:13:03,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:03,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:13:03,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:03,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:13:03,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:13:03,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:13:03,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 360 transitions, 4508 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 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 22:13:03,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:03,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:13:03,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:05,132 INFO L124 PetriNetUnfolderBase]: 4592/7424 cut-off events. [2024-06-27 22:13:05,133 INFO L125 PetriNetUnfolderBase]: For 235101/235101 co-relation queries the response was YES. [2024-06-27 22:13:05,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46449 conditions, 7424 events. 4592/7424 cut-off events. For 235101/235101 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 47579 event pairs, 1119 based on Foata normal form. 1/7254 useless extension candidates. Maximal degree in co-relation 46348. Up to 6403 conditions per place. [2024-06-27 22:13:05,211 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 321 selfloop transitions, 56 changer transitions 0/387 dead transitions. [2024-06-27 22:13:05,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 387 transitions, 5621 flow [2024-06-27 22:13:05,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:13:05,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:13:05,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-27 22:13:05,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 22:13:05,213 INFO L175 Difference]: Start difference. First operand has 202 places, 360 transitions, 4508 flow. Second operand 6 states and 144 transitions. [2024-06-27 22:13:05,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 387 transitions, 5621 flow [2024-06-27 22:13:05,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 387 transitions, 5502 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-27 22:13:05,584 INFO L231 Difference]: Finished difference. Result has 205 places, 369 transitions, 4679 flow [2024-06-27 22:13:05,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4389, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4679, PETRI_PLACES=205, PETRI_TRANSITIONS=369} [2024-06-27 22:13:05,585 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 152 predicate places. [2024-06-27 22:13:05,585 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 369 transitions, 4679 flow [2024-06-27 22:13:05,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 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 22:13:05,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:05,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:05,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:13:05,586 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:13:05,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:05,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1639161584, now seen corresponding path program 5 times [2024-06-27 22:13:05,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:05,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204658761] [2024-06-27 22:13:05,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:05,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:06,570 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 22:13:06,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:06,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204658761] [2024-06-27 22:13:06,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204658761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:06,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:06,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:13:06,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986123845] [2024-06-27 22:13:06,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:06,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:13:06,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:06,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:13:06,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:13:06,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:13:06,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 369 transitions, 4679 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:13:06,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:06,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:13:06,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:08,395 INFO L124 PetriNetUnfolderBase]: 4805/7754 cut-off events. [2024-06-27 22:13:08,395 INFO L125 PetriNetUnfolderBase]: For 257289/257291 co-relation queries the response was YES. [2024-06-27 22:13:08,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49609 conditions, 7754 events. 4805/7754 cut-off events. For 257289/257291 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 49993 event pairs, 1107 based on Foata normal form. 6/7598 useless extension candidates. Maximal degree in co-relation 49505. Up to 6396 conditions per place. [2024-06-27 22:13:08,482 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 324 selfloop transitions, 119 changer transitions 0/453 dead transitions. [2024-06-27 22:13:08,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 453 transitions, 6307 flow [2024-06-27 22:13:08,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:13:08,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:13:08,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 277 transitions. [2024-06-27 22:13:08,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357833655705996 [2024-06-27 22:13:08,483 INFO L175 Difference]: Start difference. First operand has 205 places, 369 transitions, 4679 flow. Second operand 11 states and 277 transitions. [2024-06-27 22:13:08,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 453 transitions, 6307 flow [2024-06-27 22:13:09,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 453 transitions, 6156 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-27 22:13:09,024 INFO L231 Difference]: Finished difference. Result has 214 places, 381 transitions, 5009 flow [2024-06-27 22:13:09,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4548, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5009, PETRI_PLACES=214, PETRI_TRANSITIONS=381} [2024-06-27 22:13:09,025 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 161 predicate places. [2024-06-27 22:13:09,025 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 381 transitions, 5009 flow [2024-06-27 22:13:09,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:13:09,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:09,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:09,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:13:09,026 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:13:09,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:09,026 INFO L85 PathProgramCache]: Analyzing trace with hash 197142358, now seen corresponding path program 6 times [2024-06-27 22:13:09,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:09,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726448278] [2024-06-27 22:13:09,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:09,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:10,028 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 22:13:10,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:10,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726448278] [2024-06-27 22:13:10,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726448278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:10,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:10,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:13:10,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963076778] [2024-06-27 22:13:10,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:10,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:13:10,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:10,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:13:10,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:13:10,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:13:10,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 381 transitions, 5009 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:13:10,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:10,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:13:10,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:11,877 INFO L124 PetriNetUnfolderBase]: 4864/7897 cut-off events. [2024-06-27 22:13:11,877 INFO L125 PetriNetUnfolderBase]: For 268048/268050 co-relation queries the response was YES. [2024-06-27 22:13:11,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51116 conditions, 7897 events. 4864/7897 cut-off events. For 268048/268050 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 51542 event pairs, 1176 based on Foata normal form. 6/7733 useless extension candidates. Maximal degree in co-relation 51009. Up to 6656 conditions per place. [2024-06-27 22:13:11,968 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 330 selfloop transitions, 111 changer transitions 0/451 dead transitions. [2024-06-27 22:13:11,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 451 transitions, 6341 flow [2024-06-27 22:13:11,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:13:11,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:13:11,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 271 transitions. [2024-06-27 22:13:11,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5241779497098646 [2024-06-27 22:13:11,970 INFO L175 Difference]: Start difference. First operand has 214 places, 381 transitions, 5009 flow. Second operand 11 states and 271 transitions. [2024-06-27 22:13:11,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 451 transitions, 6341 flow [2024-06-27 22:13:12,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 451 transitions, 6129 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-27 22:13:12,549 INFO L231 Difference]: Finished difference. Result has 218 places, 385 transitions, 5125 flow [2024-06-27 22:13:12,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4811, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5125, PETRI_PLACES=218, PETRI_TRANSITIONS=385} [2024-06-27 22:13:12,550 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 165 predicate places. [2024-06-27 22:13:12,550 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 385 transitions, 5125 flow [2024-06-27 22:13:12,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:13:12,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:12,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:12,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:13:12,551 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:13:12,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:12,551 INFO L85 PathProgramCache]: Analyzing trace with hash 387290330, now seen corresponding path program 7 times [2024-06-27 22:13:12,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:12,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934037471] [2024-06-27 22:13:12,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:12,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:13,276 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 22:13:13,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:13,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934037471] [2024-06-27 22:13:13,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934037471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:13,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:13,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:13:13,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290744996] [2024-06-27 22:13:13,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:13,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:13:13,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:13,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:13:13,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:13:13,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-27 22:13:13,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 385 transitions, 5125 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 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 22:13:13,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:13,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-27 22:13:13,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:14,996 INFO L124 PetriNetUnfolderBase]: 4363/7617 cut-off events. [2024-06-27 22:13:14,996 INFO L125 PetriNetUnfolderBase]: For 279433/279617 co-relation queries the response was YES. [2024-06-27 22:13:15,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48464 conditions, 7617 events. 4363/7617 cut-off events. For 279433/279617 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 53759 event pairs, 700 based on Foata normal form. 125/7477 useless extension candidates. Maximal degree in co-relation 48355. Up to 5013 conditions per place. [2024-06-27 22:13:15,091 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 232 selfloop transitions, 127 changer transitions 0/470 dead transitions. [2024-06-27 22:13:15,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 470 transitions, 6781 flow [2024-06-27 22:13:15,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:13:15,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:13:15,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 274 transitions. [2024-06-27 22:13:15,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5829787234042553 [2024-06-27 22:13:15,097 INFO L175 Difference]: Start difference. First operand has 218 places, 385 transitions, 5125 flow. Second operand 10 states and 274 transitions. [2024-06-27 22:13:15,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 470 transitions, 6781 flow [2024-06-27 22:13:15,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 470 transitions, 6564 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 22:13:15,742 INFO L231 Difference]: Finished difference. Result has 222 places, 405 transitions, 5592 flow [2024-06-27 22:13:15,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4908, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5592, PETRI_PLACES=222, PETRI_TRANSITIONS=405} [2024-06-27 22:13:15,743 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 169 predicate places. [2024-06-27 22:13:15,743 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 405 transitions, 5592 flow [2024-06-27 22:13:15,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 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 22:13:15,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:15,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:15,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:13:15,744 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:13:15,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:15,744 INFO L85 PathProgramCache]: Analyzing trace with hash 50358594, now seen corresponding path program 8 times [2024-06-27 22:13:15,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:15,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306542990] [2024-06-27 22:13:15,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:15,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:16,926 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 22:13:16,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:16,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306542990] [2024-06-27 22:13:16,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306542990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:16,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:16,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:13:16,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407935700] [2024-06-27 22:13:16,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:16,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:13:16,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:16,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:13:16,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:13:17,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:13:17,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 405 transitions, 5592 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:13:17,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:17,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:13:17,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:19,093 INFO L124 PetriNetUnfolderBase]: 5604/9106 cut-off events. [2024-06-27 22:13:19,093 INFO L125 PetriNetUnfolderBase]: For 323034/323036 co-relation queries the response was YES. [2024-06-27 22:13:19,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61119 conditions, 9106 events. 5604/9106 cut-off events. For 323034/323036 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 60908 event pairs, 1261 based on Foata normal form. 8/8910 useless extension candidates. Maximal degree in co-relation 61007. Up to 7339 conditions per place. [2024-06-27 22:13:19,178 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 363 selfloop transitions, 134 changer transitions 0/507 dead transitions. [2024-06-27 22:13:19,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 507 transitions, 7757 flow [2024-06-27 22:13:19,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:13:19,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:13:19,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-27 22:13:19,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5382978723404256 [2024-06-27 22:13:19,180 INFO L175 Difference]: Start difference. First operand has 222 places, 405 transitions, 5592 flow. Second operand 10 states and 253 transitions. [2024-06-27 22:13:19,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 507 transitions, 7757 flow [2024-06-27 22:13:19,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 507 transitions, 7540 flow, removed 84 selfloop flow, removed 4 redundant places. [2024-06-27 22:13:19,847 INFO L231 Difference]: Finished difference. Result has 229 places, 441 transitions, 6370 flow [2024-06-27 22:13:19,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5459, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6370, PETRI_PLACES=229, PETRI_TRANSITIONS=441} [2024-06-27 22:13:19,848 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 176 predicate places. [2024-06-27 22:13:19,849 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 441 transitions, 6370 flow [2024-06-27 22:13:19,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:13:19,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:19,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:19,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:13:19,849 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:13:19,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:19,850 INFO L85 PathProgramCache]: Analyzing trace with hash 53215554, now seen corresponding path program 9 times [2024-06-27 22:13:19,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:19,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743266042] [2024-06-27 22:13:19,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:19,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:21,030 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 22:13:21,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:21,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743266042] [2024-06-27 22:13:21,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743266042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:21,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:21,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:13:21,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381947965] [2024-06-27 22:13:21,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:21,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:13:21,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:21,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:13:21,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:13:21,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:13:21,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 441 transitions, 6370 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:13:21,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:21,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:13:21,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:23,112 INFO L124 PetriNetUnfolderBase]: 5586/9114 cut-off events. [2024-06-27 22:13:23,112 INFO L125 PetriNetUnfolderBase]: For 311493/311495 co-relation queries the response was YES. [2024-06-27 22:13:23,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61119 conditions, 9114 events. 5586/9114 cut-off events. For 311493/311495 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 61387 event pairs, 1356 based on Foata normal form. 10/8912 useless extension candidates. Maximal degree in co-relation 61005. Up to 7665 conditions per place. [2024-06-27 22:13:23,214 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 376 selfloop transitions, 106 changer transitions 0/492 dead transitions. [2024-06-27 22:13:23,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 492 transitions, 7632 flow [2024-06-27 22:13:23,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:13:23,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:13:23,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-27 22:13:23,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 22:13:23,216 INFO L175 Difference]: Start difference. First operand has 229 places, 441 transitions, 6370 flow. Second operand 9 states and 225 transitions. [2024-06-27 22:13:23,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 492 transitions, 7632 flow [2024-06-27 22:13:23,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 492 transitions, 7202 flow, removed 113 selfloop flow, removed 7 redundant places. [2024-06-27 22:13:23,949 INFO L231 Difference]: Finished difference. Result has 231 places, 441 transitions, 6178 flow [2024-06-27 22:13:23,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5940, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6178, PETRI_PLACES=231, PETRI_TRANSITIONS=441} [2024-06-27 22:13:23,950 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 178 predicate places. [2024-06-27 22:13:23,950 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 441 transitions, 6178 flow [2024-06-27 22:13:23,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:13:23,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:23,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:23,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:13:23,950 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:13:23,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:23,951 INFO L85 PathProgramCache]: Analyzing trace with hash 168506724, now seen corresponding path program 10 times [2024-06-27 22:13:23,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:23,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938453138] [2024-06-27 22:13:23,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:23,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:25,157 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 22:13:25,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:25,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938453138] [2024-06-27 22:13:25,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938453138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:25,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:25,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:13:25,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927279315] [2024-06-27 22:13:25,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:25,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:13:25,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:25,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:13:25,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:13:25,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:13:25,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 441 transitions, 6178 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:13:25,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:25,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:13:25,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:27,159 INFO L124 PetriNetUnfolderBase]: 5609/9254 cut-off events. [2024-06-27 22:13:27,159 INFO L125 PetriNetUnfolderBase]: For 298207/298210 co-relation queries the response was YES. [2024-06-27 22:13:27,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59816 conditions, 9254 events. 5609/9254 cut-off events. For 298207/298210 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 63069 event pairs, 1257 based on Foata normal form. 6/9024 useless extension candidates. Maximal degree in co-relation 59701. Up to 7571 conditions per place. [2024-06-27 22:13:27,266 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 349 selfloop transitions, 139 changer transitions 0/498 dead transitions. [2024-06-27 22:13:27,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 498 transitions, 7600 flow [2024-06-27 22:13:27,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:13:27,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:13:27,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-27 22:13:27,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390070921985816 [2024-06-27 22:13:27,268 INFO L175 Difference]: Start difference. First operand has 231 places, 441 transitions, 6178 flow. Second operand 9 states and 228 transitions. [2024-06-27 22:13:27,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 498 transitions, 7600 flow [2024-06-27 22:13:27,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 498 transitions, 7416 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 22:13:27,901 INFO L231 Difference]: Finished difference. Result has 233 places, 445 transitions, 6364 flow [2024-06-27 22:13:27,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5994, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6364, PETRI_PLACES=233, PETRI_TRANSITIONS=445} [2024-06-27 22:13:27,902 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 180 predicate places. [2024-06-27 22:13:27,902 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 445 transitions, 6364 flow [2024-06-27 22:13:27,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:13:27,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:27,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:27,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:13:27,903 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:13:27,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:27,904 INFO L85 PathProgramCache]: Analyzing trace with hash 168691422, now seen corresponding path program 5 times [2024-06-27 22:13:27,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:27,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496784316] [2024-06-27 22:13:27,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:27,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:29,369 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 22:13:29,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:29,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496784316] [2024-06-27 22:13:29,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496784316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:29,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:29,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:13:29,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370089587] [2024-06-27 22:13:29,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:29,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:13:29,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:29,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:13:29,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:13:29,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:13:29,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 445 transitions, 6364 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:13:29,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:29,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:13:29,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:31,479 INFO L124 PetriNetUnfolderBase]: 5640/9329 cut-off events. [2024-06-27 22:13:31,480 INFO L125 PetriNetUnfolderBase]: For 292136/292141 co-relation queries the response was YES. [2024-06-27 22:13:31,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60222 conditions, 9329 events. 5640/9329 cut-off events. For 292136/292141 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 63879 event pairs, 1401 based on Foata normal form. 6/9096 useless extension candidates. Maximal degree in co-relation 60107. Up to 7767 conditions per place. [2024-06-27 22:13:31,587 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 420 selfloop transitions, 75 changer transitions 0/505 dead transitions. [2024-06-27 22:13:31,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 505 transitions, 7806 flow [2024-06-27 22:13:31,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:13:31,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:13:31,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-27 22:13:31,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390070921985816 [2024-06-27 22:13:31,589 INFO L175 Difference]: Start difference. First operand has 233 places, 445 transitions, 6364 flow. Second operand 9 states and 228 transitions. [2024-06-27 22:13:31,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 505 transitions, 7806 flow [2024-06-27 22:13:32,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 505 transitions, 7395 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-27 22:13:32,496 INFO L231 Difference]: Finished difference. Result has 234 places, 449 transitions, 6183 flow [2024-06-27 22:13:32,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5977, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6183, PETRI_PLACES=234, PETRI_TRANSITIONS=449} [2024-06-27 22:13:32,496 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 181 predicate places. [2024-06-27 22:13:32,496 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 449 transitions, 6183 flow [2024-06-27 22:13:32,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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 22:13:32,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:32,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:32,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:13:32,497 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:13:32,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:32,497 INFO L85 PathProgramCache]: Analyzing trace with hash -704449975, now seen corresponding path program 3 times [2024-06-27 22:13:32,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:32,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971883316] [2024-06-27 22:13:32,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:32,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:33,214 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 22:13:33,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:33,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971883316] [2024-06-27 22:13:33,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971883316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:33,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:33,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:13:33,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967415324] [2024-06-27 22:13:33,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:33,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:13:33,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:33,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:13:33,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:13:33,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 22:13:33,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 449 transitions, 6183 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 22:13:33,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:33,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 22:13:33,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:34,880 INFO L124 PetriNetUnfolderBase]: 5382/8904 cut-off events. [2024-06-27 22:13:34,880 INFO L125 PetriNetUnfolderBase]: For 283044/283061 co-relation queries the response was YES. [2024-06-27 22:13:34,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56895 conditions, 8904 events. 5382/8904 cut-off events. For 283044/283061 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 61298 event pairs, 1386 based on Foata normal form. 20/8704 useless extension candidates. Maximal degree in co-relation 56779. Up to 7482 conditions per place. [2024-06-27 22:13:34,985 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 387 selfloop transitions, 56 changer transitions 0/482 dead transitions. [2024-06-27 22:13:34,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 482 transitions, 7311 flow [2024-06-27 22:13:34,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:13:34,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:13:34,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 22:13:34,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227963525835866 [2024-06-27 22:13:34,986 INFO L175 Difference]: Start difference. First operand has 234 places, 449 transitions, 6183 flow. Second operand 7 states and 172 transitions. [2024-06-27 22:13:34,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 482 transitions, 7311 flow [2024-06-27 22:13:35,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 482 transitions, 7125 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 22:13:35,817 INFO L231 Difference]: Finished difference. Result has 234 places, 458 transitions, 6249 flow [2024-06-27 22:13:35,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5997, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6249, PETRI_PLACES=234, PETRI_TRANSITIONS=458} [2024-06-27 22:13:35,818 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 181 predicate places. [2024-06-27 22:13:35,818 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 458 transitions, 6249 flow [2024-06-27 22:13:35,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 22:13:35,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:35,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:35,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:13:35,819 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:13:35,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:35,819 INFO L85 PathProgramCache]: Analyzing trace with hash -899673485, now seen corresponding path program 1 times [2024-06-27 22:13:35,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:35,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151114842] [2024-06-27 22:13:35,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:35,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:36,653 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 22:13:36,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:36,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151114842] [2024-06-27 22:13:36,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151114842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:36,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:36,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:13:36,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663216708] [2024-06-27 22:13:36,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:36,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:13:36,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:36,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:13:36,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:13:36,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 22:13:36,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 458 transitions, 6249 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 22:13:36,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:36,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 22:13:36,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:38,457 INFO L124 PetriNetUnfolderBase]: 5250/8970 cut-off events. [2024-06-27 22:13:38,457 INFO L125 PetriNetUnfolderBase]: For 260901/260901 co-relation queries the response was YES. [2024-06-27 22:13:38,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56509 conditions, 8970 events. 5250/8970 cut-off events. For 260901/260901 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 63755 event pairs, 1462 based on Foata normal form. 1/8714 useless extension candidates. Maximal degree in co-relation 56392. Up to 7518 conditions per place. [2024-06-27 22:13:38,541 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 456 selfloop transitions, 16 changer transitions 0/483 dead transitions. [2024-06-27 22:13:38,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 483 transitions, 7448 flow [2024-06-27 22:13:38,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:13:38,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:13:38,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-27 22:13:38,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2024-06-27 22:13:38,542 INFO L175 Difference]: Start difference. First operand has 234 places, 458 transitions, 6249 flow. Second operand 6 states and 145 transitions. [2024-06-27 22:13:38,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 483 transitions, 7448 flow [2024-06-27 22:13:39,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 483 transitions, 7348 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-27 22:13:39,120 INFO L231 Difference]: Finished difference. Result has 238 places, 466 transitions, 6344 flow [2024-06-27 22:13:39,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6149, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6344, PETRI_PLACES=238, PETRI_TRANSITIONS=466} [2024-06-27 22:13:39,120 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 185 predicate places. [2024-06-27 22:13:39,120 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 466 transitions, 6344 flow [2024-06-27 22:13:39,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 22:13:39,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:39,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:39,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:13:39,121 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:13:39,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:39,122 INFO L85 PathProgramCache]: Analyzing trace with hash 939486601, now seen corresponding path program 2 times [2024-06-27 22:13:39,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:39,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792460196] [2024-06-27 22:13:39,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:39,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:39,967 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 22:13:39,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:39,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792460196] [2024-06-27 22:13:39,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792460196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:39,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:39,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:13:39,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56115984] [2024-06-27 22:13:39,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:39,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:13:39,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:39,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:13:39,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:13:40,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 22:13:40,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 466 transitions, 6344 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 22:13:40,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:40,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 22:13:40,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:41,618 INFO L124 PetriNetUnfolderBase]: 5247/8968 cut-off events. [2024-06-27 22:13:41,619 INFO L125 PetriNetUnfolderBase]: For 270725/270731 co-relation queries the response was YES. [2024-06-27 22:13:41,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57121 conditions, 8968 events. 5247/8968 cut-off events. For 270725/270731 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 63760 event pairs, 1468 based on Foata normal form. 5/8715 useless extension candidates. Maximal degree in co-relation 57001. Up to 7500 conditions per place. [2024-06-27 22:13:41,719 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 450 selfloop transitions, 23 changer transitions 0/484 dead transitions. [2024-06-27 22:13:41,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 484 transitions, 7466 flow [2024-06-27 22:13:41,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:13:41,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:13:41,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-27 22:13:41,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 22:13:41,720 INFO L175 Difference]: Start difference. First operand has 238 places, 466 transitions, 6344 flow. Second operand 6 states and 144 transitions. [2024-06-27 22:13:41,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 484 transitions, 7466 flow [2024-06-27 22:13:42,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 484 transitions, 7372 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-06-27 22:13:42,454 INFO L231 Difference]: Finished difference. Result has 241 places, 470 transitions, 6391 flow [2024-06-27 22:13:42,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6250, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6391, PETRI_PLACES=241, PETRI_TRANSITIONS=470} [2024-06-27 22:13:42,455 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 188 predicate places. [2024-06-27 22:13:42,455 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 470 transitions, 6391 flow [2024-06-27 22:13:42,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 22:13:42,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:42,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:42,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:13:42,456 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:13:42,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:42,456 INFO L85 PathProgramCache]: Analyzing trace with hash -237617614, now seen corresponding path program 1 times [2024-06-27 22:13:42,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:42,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284719056] [2024-06-27 22:13:42,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:42,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:44,011 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 22:13:44,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:44,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284719056] [2024-06-27 22:13:44,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284719056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:44,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:44,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:13:44,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445233557] [2024-06-27 22:13:44,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:44,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:13:44,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:44,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:13:44,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:13:44,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:13:44,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 470 transitions, 6391 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:13:44,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:44,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:13:44,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:46,684 INFO L124 PetriNetUnfolderBase]: 5926/10039 cut-off events. [2024-06-27 22:13:46,684 INFO L125 PetriNetUnfolderBase]: For 368620/368620 co-relation queries the response was YES. [2024-06-27 22:13:46,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65926 conditions, 10039 events. 5926/10039 cut-off events. For 368620/368620 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 70949 event pairs, 1233 based on Foata normal form. 25/9747 useless extension candidates. Maximal degree in co-relation 65805. Up to 7905 conditions per place. [2024-06-27 22:13:46,784 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 413 selfloop transitions, 111 changer transitions 0/534 dead transitions. [2024-06-27 22:13:46,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 534 transitions, 7988 flow [2024-06-27 22:13:46,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:13:46,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:13:46,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 263 transitions. [2024-06-27 22:13:46,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087040618955513 [2024-06-27 22:13:46,786 INFO L175 Difference]: Start difference. First operand has 241 places, 470 transitions, 6391 flow. Second operand 11 states and 263 transitions. [2024-06-27 22:13:46,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 534 transitions, 7988 flow [2024-06-27 22:13:47,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 534 transitions, 7875 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-27 22:13:47,420 INFO L231 Difference]: Finished difference. Result has 249 places, 477 transitions, 6709 flow [2024-06-27 22:13:47,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6278, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6709, PETRI_PLACES=249, PETRI_TRANSITIONS=477} [2024-06-27 22:13:47,421 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 196 predicate places. [2024-06-27 22:13:47,421 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 477 transitions, 6709 flow [2024-06-27 22:13:47,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:13:47,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:47,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:47,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:13:47,422 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:13:47,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:47,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1097234660, now seen corresponding path program 2 times [2024-06-27 22:13:47,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:47,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566661920] [2024-06-27 22:13:47,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:47,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:49,024 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 22:13:49,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:49,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566661920] [2024-06-27 22:13:49,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566661920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:49,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:49,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:13:49,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681065715] [2024-06-27 22:13:49,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:49,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:13:49,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:49,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:13:49,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:13:49,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:13:49,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 477 transitions, 6709 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:13:49,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:49,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:13:49,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:51,899 INFO L124 PetriNetUnfolderBase]: 6047/10283 cut-off events. [2024-06-27 22:13:51,899 INFO L125 PetriNetUnfolderBase]: For 398554/398554 co-relation queries the response was YES. [2024-06-27 22:13:51,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70113 conditions, 10283 events. 6047/10283 cut-off events. For 398554/398554 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 73242 event pairs, 1251 based on Foata normal form. 12/9968 useless extension candidates. Maximal degree in co-relation 69990. Up to 7822 conditions per place. [2024-06-27 22:13:52,045 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 413 selfloop transitions, 117 changer transitions 0/540 dead transitions. [2024-06-27 22:13:52,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 540 transitions, 8353 flow [2024-06-27 22:13:52,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:13:52,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:13:52,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 243 transitions. [2024-06-27 22:13:52,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170212765957447 [2024-06-27 22:13:52,046 INFO L175 Difference]: Start difference. First operand has 249 places, 477 transitions, 6709 flow. Second operand 10 states and 243 transitions. [2024-06-27 22:13:52,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 540 transitions, 8353 flow [2024-06-27 22:13:52,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 540 transitions, 8089 flow, removed 69 selfloop flow, removed 7 redundant places. [2024-06-27 22:13:53,002 INFO L231 Difference]: Finished difference. Result has 252 places, 479 transitions, 6804 flow [2024-06-27 22:13:53,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6459, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6804, PETRI_PLACES=252, PETRI_TRANSITIONS=479} [2024-06-27 22:13:53,002 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 199 predicate places. [2024-06-27 22:13:53,003 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 479 transitions, 6804 flow [2024-06-27 22:13:53,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:13:53,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:53,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:53,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:13:53,003 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:13:53,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:53,003 INFO L85 PathProgramCache]: Analyzing trace with hash -326331244, now seen corresponding path program 3 times [2024-06-27 22:13:53,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:53,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677746560] [2024-06-27 22:13:53,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:53,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:54,697 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 22:13:54,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:54,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677746560] [2024-06-27 22:13:54,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677746560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:54,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:54,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:13:54,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081532239] [2024-06-27 22:13:54,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:54,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:13:54,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:54,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:13:54,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:13:54,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:13:54,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 479 transitions, 6804 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:13:54,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:54,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:13:54,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:57,606 INFO L124 PetriNetUnfolderBase]: 6140/10380 cut-off events. [2024-06-27 22:13:57,606 INFO L125 PetriNetUnfolderBase]: For 410741/410741 co-relation queries the response was YES. [2024-06-27 22:13:57,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71109 conditions, 10380 events. 6140/10380 cut-off events. For 410741/410741 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 73441 event pairs, 1168 based on Foata normal form. 12/10079 useless extension candidates. Maximal degree in co-relation 70984. Up to 7420 conditions per place. [2024-06-27 22:13:57,711 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 406 selfloop transitions, 138 changer transitions 0/554 dead transitions. [2024-06-27 22:13:57,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 554 transitions, 8530 flow [2024-06-27 22:13:57,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:13:57,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:13:57,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 269 transitions. [2024-06-27 22:13:57,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5203094777562862 [2024-06-27 22:13:57,713 INFO L175 Difference]: Start difference. First operand has 252 places, 479 transitions, 6804 flow. Second operand 11 states and 269 transitions. [2024-06-27 22:13:57,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 554 transitions, 8530 flow [2024-06-27 22:13:58,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 554 transitions, 8366 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 22:13:58,740 INFO L231 Difference]: Finished difference. Result has 257 places, 480 transitions, 6981 flow [2024-06-27 22:13:58,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6640, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6981, PETRI_PLACES=257, PETRI_TRANSITIONS=480} [2024-06-27 22:13:58,741 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 204 predicate places. [2024-06-27 22:13:58,741 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 480 transitions, 6981 flow [2024-06-27 22:13:58,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:13:58,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:58,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:58,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 22:13:58,741 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:13:58,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:58,741 INFO L85 PathProgramCache]: Analyzing trace with hash -958558640, now seen corresponding path program 4 times [2024-06-27 22:13:58,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:58,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951014956] [2024-06-27 22:13:58,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:58,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:00,270 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 22:14:00,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:00,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951014956] [2024-06-27 22:14:00,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951014956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:00,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:00,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:14:00,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285384270] [2024-06-27 22:14:00,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:00,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:14:00,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:00,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:14:00,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:14:00,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:14:00,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 480 transitions, 6981 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:14:00,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:00,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:14:00,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:02,991 INFO L124 PetriNetUnfolderBase]: 6370/10783 cut-off events. [2024-06-27 22:14:02,991 INFO L125 PetriNetUnfolderBase]: For 449794/449800 co-relation queries the response was YES. [2024-06-27 22:14:03,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74906 conditions, 10783 events. 6370/10783 cut-off events. For 449794/449800 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 77086 event pairs, 1445 based on Foata normal form. 25/10471 useless extension candidates. Maximal degree in co-relation 74779. Up to 7985 conditions per place. [2024-06-27 22:14:03,125 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 331 selfloop transitions, 209 changer transitions 0/550 dead transitions. [2024-06-27 22:14:03,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 550 transitions, 8774 flow [2024-06-27 22:14:03,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:14:03,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:14:03,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 269 transitions. [2024-06-27 22:14:03,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5203094777562862 [2024-06-27 22:14:03,129 INFO L175 Difference]: Start difference. First operand has 257 places, 480 transitions, 6981 flow. Second operand 11 states and 269 transitions. [2024-06-27 22:14:03,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 550 transitions, 8774 flow [2024-06-27 22:14:04,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 550 transitions, 8532 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 22:14:04,300 INFO L231 Difference]: Finished difference. Result has 261 places, 483 transitions, 7280 flow [2024-06-27 22:14:04,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6739, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7280, PETRI_PLACES=261, PETRI_TRANSITIONS=483} [2024-06-27 22:14:04,301 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 208 predicate places. [2024-06-27 22:14:04,301 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 483 transitions, 7280 flow [2024-06-27 22:14:04,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:14:04,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:04,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:04,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 22:14:04,302 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:14:04,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:04,302 INFO L85 PathProgramCache]: Analyzing trace with hash -550317816, now seen corresponding path program 5 times [2024-06-27 22:14:04,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:04,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665674120] [2024-06-27 22:14:04,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:04,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:05,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:05,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:05,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665674120] [2024-06-27 22:14:05,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665674120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:05,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:05,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:14:05,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491729718] [2024-06-27 22:14:05,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:05,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:14:05,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:05,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:14:05,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:14:06,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:14:06,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 483 transitions, 7280 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:14:06,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:06,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:14:06,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:08,813 INFO L124 PetriNetUnfolderBase]: 6621/11256 cut-off events. [2024-06-27 22:14:08,813 INFO L125 PetriNetUnfolderBase]: For 491885/491891 co-relation queries the response was YES. [2024-06-27 22:14:08,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80589 conditions, 11256 events. 6621/11256 cut-off events. For 491885/491891 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 81528 event pairs, 1498 based on Foata normal form. 13/10916 useless extension candidates. Maximal degree in co-relation 80461. Up to 8066 conditions per place. [2024-06-27 22:14:08,971 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 342 selfloop transitions, 202 changer transitions 0/554 dead transitions. [2024-06-27 22:14:08,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 554 transitions, 9342 flow [2024-06-27 22:14:08,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:14:08,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:14:08,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-06-27 22:14:08,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340425531914894 [2024-06-27 22:14:08,972 INFO L175 Difference]: Start difference. First operand has 261 places, 483 transitions, 7280 flow. Second operand 10 states and 251 transitions. [2024-06-27 22:14:08,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 554 transitions, 9342 flow [2024-06-27 22:14:10,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 554 transitions, 8823 flow, removed 41 selfloop flow, removed 10 redundant places. [2024-06-27 22:14:10,570 INFO L231 Difference]: Finished difference. Result has 261 places, 485 transitions, 7299 flow [2024-06-27 22:14:10,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6778, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7299, PETRI_PLACES=261, PETRI_TRANSITIONS=485} [2024-06-27 22:14:10,571 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 208 predicate places. [2024-06-27 22:14:10,571 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 485 transitions, 7299 flow [2024-06-27 22:14:10,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:14:10,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:10,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:10,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 22:14:10,572 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:14:10,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:10,572 INFO L85 PathProgramCache]: Analyzing trace with hash -953196260, now seen corresponding path program 6 times [2024-06-27 22:14:10,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:10,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463984528] [2024-06-27 22:14:10,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:10,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:12,296 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 22:14:12,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:12,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463984528] [2024-06-27 22:14:12,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463984528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:12,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:12,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:14:12,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701706192] [2024-06-27 22:14:12,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:12,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:14:12,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:12,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:14:12,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:14:12,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:14:12,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 485 transitions, 7299 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:14:12,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:12,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:14:12,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:15,196 INFO L124 PetriNetUnfolderBase]: 6621/11292 cut-off events. [2024-06-27 22:14:15,197 INFO L125 PetriNetUnfolderBase]: For 476891/476897 co-relation queries the response was YES. [2024-06-27 22:14:15,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79048 conditions, 11292 events. 6621/11292 cut-off events. For 476891/476897 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 82181 event pairs, 1523 based on Foata normal form. 17/10944 useless extension candidates. Maximal degree in co-relation 78919. Up to 8520 conditions per place. [2024-06-27 22:14:15,342 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 334 selfloop transitions, 206 changer transitions 0/550 dead transitions. [2024-06-27 22:14:15,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 550 transitions, 9062 flow [2024-06-27 22:14:15,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:14:15,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:14:15,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2024-06-27 22:14:15,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234042553191489 [2024-06-27 22:14:15,344 INFO L175 Difference]: Start difference. First operand has 261 places, 485 transitions, 7299 flow. Second operand 10 states and 246 transitions. [2024-06-27 22:14:15,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 550 transitions, 9062 flow [2024-06-27 22:14:16,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 550 transitions, 8758 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-27 22:14:16,754 INFO L231 Difference]: Finished difference. Result has 265 places, 487 transitions, 7507 flow [2024-06-27 22:14:16,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7019, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7507, PETRI_PLACES=265, PETRI_TRANSITIONS=487} [2024-06-27 22:14:16,759 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 212 predicate places. [2024-06-27 22:14:16,759 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 487 transitions, 7507 flow [2024-06-27 22:14:16,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:14:16,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:16,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:16,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 22:14:16,760 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:14:16,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:16,760 INFO L85 PathProgramCache]: Analyzing trace with hash -30003022, now seen corresponding path program 1 times [2024-06-27 22:14:16,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:16,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876162641] [2024-06-27 22:14:16,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:16,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:18,756 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 22:14:18,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:18,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876162641] [2024-06-27 22:14:18,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876162641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:18,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:18,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:14:18,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870097259] [2024-06-27 22:14:18,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:18,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:14:18,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:18,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:14:18,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:14:18,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:14:18,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 487 transitions, 7507 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:14:18,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:18,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:14:18,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:21,692 INFO L124 PetriNetUnfolderBase]: 6714/11195 cut-off events. [2024-06-27 22:14:21,692 INFO L125 PetriNetUnfolderBase]: For 475752/475758 co-relation queries the response was YES. [2024-06-27 22:14:21,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80735 conditions, 11195 events. 6714/11195 cut-off events. For 475752/475758 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 79931 event pairs, 1487 based on Foata normal form. 13/10901 useless extension candidates. Maximal degree in co-relation 80604. Up to 8053 conditions per place. [2024-06-27 22:14:21,850 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 331 selfloop transitions, 214 changer transitions 0/555 dead transitions. [2024-06-27 22:14:21,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 555 transitions, 9295 flow [2024-06-27 22:14:21,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:14:21,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:14:21,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2024-06-27 22:14:21,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276595744680851 [2024-06-27 22:14:21,852 INFO L175 Difference]: Start difference. First operand has 265 places, 487 transitions, 7507 flow. Second operand 10 states and 248 transitions. [2024-06-27 22:14:21,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 555 transitions, 9295 flow [2024-06-27 22:14:23,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 555 transitions, 8833 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 22:14:23,124 INFO L231 Difference]: Finished difference. Result has 267 places, 491 transitions, 7636 flow [2024-06-27 22:14:23,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7045, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7636, PETRI_PLACES=267, PETRI_TRANSITIONS=491} [2024-06-27 22:14:23,125 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 214 predicate places. [2024-06-27 22:14:23,125 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 491 transitions, 7636 flow [2024-06-27 22:14:23,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:14:23,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:23,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:23,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 22:14:23,126 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:14:23,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:23,126 INFO L85 PathProgramCache]: Analyzing trace with hash -569288058, now seen corresponding path program 1 times [2024-06-27 22:14:23,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:23,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838696876] [2024-06-27 22:14:23,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:23,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:24,289 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 22:14:24,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:24,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838696876] [2024-06-27 22:14:24,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838696876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:24,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:24,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:14:24,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603559041] [2024-06-27 22:14:24,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:24,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:14:24,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:24,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:14:24,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:14:24,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:14:24,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 491 transitions, 7636 flow. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 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 22:14:24,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:24,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:14:24,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:26,616 INFO L124 PetriNetUnfolderBase]: 6748/11344 cut-off events. [2024-06-27 22:14:26,616 INFO L125 PetriNetUnfolderBase]: For 476435/476435 co-relation queries the response was YES. [2024-06-27 22:14:26,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81784 conditions, 11344 events. 6748/11344 cut-off events. For 476435/476435 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 82040 event pairs, 1631 based on Foata normal form. 2/11031 useless extension candidates. Maximal degree in co-relation 81652. Up to 9640 conditions per place. [2024-06-27 22:14:26,766 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 458 selfloop transitions, 53 changer transitions 0/521 dead transitions. [2024-06-27 22:14:26,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 521 transitions, 8953 flow [2024-06-27 22:14:26,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:14:26,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:14:26,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 22:14:26,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513677811550152 [2024-06-27 22:14:26,767 INFO L175 Difference]: Start difference. First operand has 267 places, 491 transitions, 7636 flow. Second operand 7 states and 169 transitions. [2024-06-27 22:14:26,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 521 transitions, 8953 flow [2024-06-27 22:14:27,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 521 transitions, 8501 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-27 22:14:27,806 INFO L231 Difference]: Finished difference. Result has 267 places, 495 transitions, 7366 flow [2024-06-27 22:14:27,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7184, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7366, PETRI_PLACES=267, PETRI_TRANSITIONS=495} [2024-06-27 22:14:27,807 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 214 predicate places. [2024-06-27 22:14:27,807 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 495 transitions, 7366 flow [2024-06-27 22:14:27,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 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 22:14:27,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:27,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:27,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 22:14:27,808 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:14:27,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:27,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1296055789, now seen corresponding path program 1 times [2024-06-27 22:14:27,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:27,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845107874] [2024-06-27 22:14:27,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:27,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:28,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:28,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:28,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845107874] [2024-06-27 22:14:28,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845107874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:28,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:28,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:14:28,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790564952] [2024-06-27 22:14:28,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:28,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:14:28,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:28,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:14:28,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:14:28,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:14:28,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 495 transitions, 7366 flow. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 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 22:14:28,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:28,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:14:28,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:31,157 INFO L124 PetriNetUnfolderBase]: 6772/11528 cut-off events. [2024-06-27 22:14:31,157 INFO L125 PetriNetUnfolderBase]: For 472725/472725 co-relation queries the response was YES. [2024-06-27 22:14:31,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81476 conditions, 11528 events. 6772/11528 cut-off events. For 472725/472725 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 84039 event pairs, 1633 based on Foata normal form. 1/11178 useless extension candidates. Maximal degree in co-relation 81343. Up to 9684 conditions per place. [2024-06-27 22:14:31,338 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 460 selfloop transitions, 57 changer transitions 0/527 dead transitions. [2024-06-27 22:14:31,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 527 transitions, 8731 flow [2024-06-27 22:14:31,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:14:31,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:14:31,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 22:14:31,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075987841945289 [2024-06-27 22:14:31,339 INFO L175 Difference]: Start difference. First operand has 267 places, 495 transitions, 7366 flow. Second operand 7 states and 167 transitions. [2024-06-27 22:14:31,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 527 transitions, 8731 flow [2024-06-27 22:14:32,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 527 transitions, 8614 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 22:14:32,663 INFO L231 Difference]: Finished difference. Result has 270 places, 503 transitions, 7520 flow [2024-06-27 22:14:32,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7249, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7520, PETRI_PLACES=270, PETRI_TRANSITIONS=503} [2024-06-27 22:14:32,664 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 217 predicate places. [2024-06-27 22:14:32,664 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 503 transitions, 7520 flow [2024-06-27 22:14:32,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 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 22:14:32,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:32,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:32,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 22:14:32,665 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:14:32,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:32,665 INFO L85 PathProgramCache]: Analyzing trace with hash 804121104, now seen corresponding path program 7 times [2024-06-27 22:14:32,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:32,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823242255] [2024-06-27 22:14:32,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:32,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:34,285 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 22:14:34,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:34,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823242255] [2024-06-27 22:14:34,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823242255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:34,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:34,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:14:34,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049221968] [2024-06-27 22:14:34,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:34,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:14:34,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:34,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:14:34,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:14:34,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:14:34,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 503 transitions, 7520 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:14:34,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:34,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:14:34,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:37,473 INFO L124 PetriNetUnfolderBase]: 6902/11169 cut-off events. [2024-06-27 22:14:37,473 INFO L125 PetriNetUnfolderBase]: For 534810/534810 co-relation queries the response was YES. [2024-06-27 22:14:37,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84340 conditions, 11169 events. 6902/11169 cut-off events. For 534810/534810 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 77459 event pairs, 1297 based on Foata normal form. 16/10977 useless extension candidates. Maximal degree in co-relation 84206. Up to 8961 conditions per place. [2024-06-27 22:14:37,606 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 347 selfloop transitions, 207 changer transitions 0/564 dead transitions. [2024-06-27 22:14:37,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 564 transitions, 9298 flow [2024-06-27 22:14:37,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:14:37,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:14:37,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 243 transitions. [2024-06-27 22:14:37,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170212765957447 [2024-06-27 22:14:37,607 INFO L175 Difference]: Start difference. First operand has 270 places, 503 transitions, 7520 flow. Second operand 10 states and 243 transitions. [2024-06-27 22:14:37,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 564 transitions, 9298 flow [2024-06-27 22:14:38,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 564 transitions, 9095 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-27 22:14:38,957 INFO L231 Difference]: Finished difference. Result has 275 places, 505 transitions, 7837 flow [2024-06-27 22:14:38,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7317, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7837, PETRI_PLACES=275, PETRI_TRANSITIONS=505} [2024-06-27 22:14:38,957 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 222 predicate places. [2024-06-27 22:14:38,957 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 505 transitions, 7837 flow [2024-06-27 22:14:38,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:14:38,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:38,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:38,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 22:14:38,958 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:14:38,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:38,959 INFO L85 PathProgramCache]: Analyzing trace with hash 804117384, now seen corresponding path program 8 times [2024-06-27 22:14:38,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:38,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520623956] [2024-06-27 22:14:38,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:38,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:40,476 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 22:14:40,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:40,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520623956] [2024-06-27 22:14:40,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520623956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:40,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:40,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:14:40,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196386315] [2024-06-27 22:14:40,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:40,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:14:40,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:40,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:14:40,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:14:40,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:14:40,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 505 transitions, 7837 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:14:40,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:40,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:14:40,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:43,797 INFO L124 PetriNetUnfolderBase]: 7153/11622 cut-off events. [2024-06-27 22:14:43,797 INFO L125 PetriNetUnfolderBase]: For 609246/609246 co-relation queries the response was YES. [2024-06-27 22:14:43,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91208 conditions, 11622 events. 7153/11622 cut-off events. For 609246/609246 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 81491 event pairs, 1352 based on Foata normal form. 12/11420 useless extension candidates. Maximal degree in co-relation 91073. Up to 8922 conditions per place. [2024-06-27 22:14:43,956 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 353 selfloop transitions, 208 changer transitions 0/571 dead transitions. [2024-06-27 22:14:43,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 571 transitions, 9931 flow [2024-06-27 22:14:43,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:14:43,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:14:43,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-06-27 22:14:43,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255319148936171 [2024-06-27 22:14:43,957 INFO L175 Difference]: Start difference. First operand has 275 places, 505 transitions, 7837 flow. Second operand 10 states and 247 transitions. [2024-06-27 22:14:43,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 571 transitions, 9931 flow [2024-06-27 22:14:45,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 571 transitions, 9433 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-27 22:14:45,263 INFO L231 Difference]: Finished difference. Result has 276 places, 507 transitions, 7883 flow [2024-06-27 22:14:45,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7339, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7883, PETRI_PLACES=276, PETRI_TRANSITIONS=507} [2024-06-27 22:14:45,264 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 223 predicate places. [2024-06-27 22:14:45,264 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 507 transitions, 7883 flow [2024-06-27 22:14:45,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:14:45,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:45,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:45,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 22:14:45,265 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:14:45,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:45,265 INFO L85 PathProgramCache]: Analyzing trace with hash 809627634, now seen corresponding path program 9 times [2024-06-27 22:14:45,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:45,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394812281] [2024-06-27 22:14:45,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:45,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:47,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:47,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:47,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394812281] [2024-06-27 22:14:47,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394812281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:47,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:47,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:14:47,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185161514] [2024-06-27 22:14:47,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:47,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:14:47,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:47,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:14:47,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:14:47,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:14:47,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 507 transitions, 7883 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:14:47,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:47,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:14:47,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:50,521 INFO L124 PetriNetUnfolderBase]: 7452/12127 cut-off events. [2024-06-27 22:14:50,521 INFO L125 PetriNetUnfolderBase]: For 664910/664910 co-relation queries the response was YES. [2024-06-27 22:14:50,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95434 conditions, 12127 events. 7452/12127 cut-off events. For 664910/664910 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 85972 event pairs, 1431 based on Foata normal form. 25/11920 useless extension candidates. Maximal degree in co-relation 95299. Up to 9610 conditions per place. [2024-06-27 22:14:50,716 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 369 selfloop transitions, 212 changer transitions 0/591 dead transitions. [2024-06-27 22:14:50,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 591 transitions, 10217 flow [2024-06-27 22:14:50,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:14:50,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:14:50,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 290 transitions. [2024-06-27 22:14:50,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2024-06-27 22:14:50,717 INFO L175 Difference]: Start difference. First operand has 276 places, 507 transitions, 7883 flow. Second operand 12 states and 290 transitions. [2024-06-27 22:14:50,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 591 transitions, 10217 flow [2024-06-27 22:14:52,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 591 transitions, 9923 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 22:14:52,459 INFO L231 Difference]: Finished difference. Result has 284 places, 516 transitions, 8299 flow [2024-06-27 22:14:52,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7599, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8299, PETRI_PLACES=284, PETRI_TRANSITIONS=516} [2024-06-27 22:14:52,459 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 231 predicate places. [2024-06-27 22:14:52,460 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 516 transitions, 8299 flow [2024-06-27 22:14:52,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:14:52,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:52,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:52,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 22:14:52,460 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:14:52,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:52,461 INFO L85 PathProgramCache]: Analyzing trace with hash 227077630, now seen corresponding path program 10 times [2024-06-27 22:14:52,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:52,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689182494] [2024-06-27 22:14:52,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:52,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:54,749 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 22:14:54,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:54,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689182494] [2024-06-27 22:14:54,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689182494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:54,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:54,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:14:54,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3030928] [2024-06-27 22:14:54,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:54,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:14:54,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:54,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:14:54,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:14:54,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:14:54,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 516 transitions, 8299 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:14:54,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:54,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:14:54,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:58,335 INFO L124 PetriNetUnfolderBase]: 7452/12849 cut-off events. [2024-06-27 22:14:58,335 INFO L125 PetriNetUnfolderBase]: For 652564/652564 co-relation queries the response was YES. [2024-06-27 22:14:58,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98111 conditions, 12849 events. 7452/12849 cut-off events. For 652564/652564 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 96853 event pairs, 1627 based on Foata normal form. 16/12410 useless extension candidates. Maximal degree in co-relation 97972. Up to 9802 conditions per place. [2024-06-27 22:14:58,498 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 339 selfloop transitions, 223 changer transitions 0/572 dead transitions. [2024-06-27 22:14:58,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 572 transitions, 10027 flow [2024-06-27 22:14:58,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:14:58,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:14:58,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 242 transitions. [2024-06-27 22:14:58,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148936170212766 [2024-06-27 22:14:58,500 INFO L175 Difference]: Start difference. First operand has 284 places, 516 transitions, 8299 flow. Second operand 10 states and 242 transitions. [2024-06-27 22:14:58,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 572 transitions, 10027 flow [2024-06-27 22:15:00,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 572 transitions, 9564 flow, removed 59 selfloop flow, removed 8 redundant places. [2024-06-27 22:15:00,221 INFO L231 Difference]: Finished difference. Result has 286 places, 518 transitions, 8386 flow [2024-06-27 22:15:00,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7854, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8386, PETRI_PLACES=286, PETRI_TRANSITIONS=518} [2024-06-27 22:15:00,222 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 233 predicate places. [2024-06-27 22:15:00,222 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 518 transitions, 8386 flow [2024-06-27 22:15:00,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:15:00,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:00,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:00,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 22:15:00,222 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:15:00,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:00,222 INFO L85 PathProgramCache]: Analyzing trace with hash 809842836, now seen corresponding path program 2 times [2024-06-27 22:15:00,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:00,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851773790] [2024-06-27 22:15:00,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:00,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:02,076 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 22:15:02,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:02,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851773790] [2024-06-27 22:15:02,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851773790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:02,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:02,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:15:02,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617143074] [2024-06-27 22:15:02,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:02,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:15:02,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:02,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:15:02,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:15:02,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:15:02,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 518 transitions, 8386 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:15:02,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:02,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:15:02,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:05,317 INFO L124 PetriNetUnfolderBase]: 7581/12318 cut-off events. [2024-06-27 22:15:05,317 INFO L125 PetriNetUnfolderBase]: For 650793/650793 co-relation queries the response was YES. [2024-06-27 22:15:05,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99841 conditions, 12318 events. 7581/12318 cut-off events. For 650793/650793 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 87478 event pairs, 1433 based on Foata normal form. 12/12102 useless extension candidates. Maximal degree in co-relation 99701. Up to 9665 conditions per place. [2024-06-27 22:15:05,504 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 369 selfloop transitions, 209 changer transitions 0/588 dead transitions. [2024-06-27 22:15:05,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 588 transitions, 10379 flow [2024-06-27 22:15:05,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:15:05,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:15:05,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2024-06-27 22:15:05,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234042553191489 [2024-06-27 22:15:05,506 INFO L175 Difference]: Start difference. First operand has 286 places, 518 transitions, 8386 flow. Second operand 10 states and 246 transitions. [2024-06-27 22:15:05,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 588 transitions, 10379 flow [2024-06-27 22:15:07,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 588 transitions, 9840 flow, removed 25 selfloop flow, removed 10 redundant places. [2024-06-27 22:15:07,843 INFO L231 Difference]: Finished difference. Result has 287 places, 524 transitions, 8497 flow [2024-06-27 22:15:07,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7847, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8497, PETRI_PLACES=287, PETRI_TRANSITIONS=524} [2024-06-27 22:15:07,843 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 234 predicate places. [2024-06-27 22:15:07,843 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 524 transitions, 8497 flow [2024-06-27 22:15:07,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:15:07,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:07,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:07,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 22:15:07,844 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:15:07,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:07,844 INFO L85 PathProgramCache]: Analyzing trace with hash 227292832, now seen corresponding path program 3 times [2024-06-27 22:15:07,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:07,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136955268] [2024-06-27 22:15:07,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:07,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:10,593 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 22:15:10,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:10,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136955268] [2024-06-27 22:15:10,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136955268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:10,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:10,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:15:10,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871745395] [2024-06-27 22:15:10,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:10,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:15:10,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:10,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:15:10,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:15:10,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:15:10,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 524 transitions, 8497 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:15:10,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:10,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:15:10,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:14,890 INFO L124 PetriNetUnfolderBase]: 7674/13177 cut-off events. [2024-06-27 22:15:14,890 INFO L125 PetriNetUnfolderBase]: For 692217/692217 co-relation queries the response was YES. [2024-06-27 22:15:14,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102932 conditions, 13177 events. 7674/13177 cut-off events. For 692217/692217 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 99955 event pairs, 1713 based on Foata normal form. 12/12756 useless extension candidates. Maximal degree in co-relation 102791. Up to 9990 conditions per place. [2024-06-27 22:15:15,047 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 347 selfloop transitions, 226 changer transitions 0/583 dead transitions. [2024-06-27 22:15:15,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 583 transitions, 10297 flow [2024-06-27 22:15:15,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:15:15,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:15:15,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 245 transitions. [2024-06-27 22:15:15,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-27 22:15:15,048 INFO L175 Difference]: Start difference. First operand has 287 places, 524 transitions, 8497 flow. Second operand 10 states and 245 transitions. [2024-06-27 22:15:15,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 583 transitions, 10297 flow [2024-06-27 22:15:17,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 583 transitions, 9774 flow, removed 62 selfloop flow, removed 7 redundant places. [2024-06-27 22:15:17,133 INFO L231 Difference]: Finished difference. Result has 290 places, 526 transitions, 8543 flow [2024-06-27 22:15:17,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7974, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8543, PETRI_PLACES=290, PETRI_TRANSITIONS=526} [2024-06-27 22:15:17,133 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 237 predicate places. [2024-06-27 22:15:17,133 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 526 transitions, 8543 flow [2024-06-27 22:15:17,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:15:17,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:17,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:17,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 22:15:17,134 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:15:17,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:17,134 INFO L85 PathProgramCache]: Analyzing trace with hash 492990112, now seen corresponding path program 4 times [2024-06-27 22:15:17,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:17,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399082785] [2024-06-27 22:15:17,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:17,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:19,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:19,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:19,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399082785] [2024-06-27 22:15:19,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399082785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:19,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:19,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:15:19,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280315793] [2024-06-27 22:15:19,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:19,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:15:19,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:19,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:15:19,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:15:19,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:15:19,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 526 transitions, 8543 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:15:19,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:19,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:15:19,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:23,918 INFO L124 PetriNetUnfolderBase]: 7904/13319 cut-off events. [2024-06-27 22:15:23,918 INFO L125 PetriNetUnfolderBase]: For 757596/757596 co-relation queries the response was YES. [2024-06-27 22:15:24,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107154 conditions, 13319 events. 7904/13319 cut-off events. For 757596/757596 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 99390 event pairs, 1508 based on Foata normal form. 12/12956 useless extension candidates. Maximal degree in co-relation 107012. Up to 8500 conditions per place. [2024-06-27 22:15:24,101 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 329 selfloop transitions, 253 changer transitions 0/592 dead transitions. [2024-06-27 22:15:24,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 592 transitions, 10740 flow [2024-06-27 22:15:24,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:15:24,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:15:24,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-06-27 22:15:24,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255319148936171 [2024-06-27 22:15:24,102 INFO L175 Difference]: Start difference. First operand has 290 places, 526 transitions, 8543 flow. Second operand 10 states and 247 transitions. [2024-06-27 22:15:24,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 592 transitions, 10740 flow [2024-06-27 22:15:26,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 592 transitions, 10197 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-27 22:15:26,337 INFO L231 Difference]: Finished difference. Result has 294 places, 535 transitions, 8922 flow [2024-06-27 22:15:26,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8000, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8922, PETRI_PLACES=294, PETRI_TRANSITIONS=535} [2024-06-27 22:15:26,338 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 241 predicate places. [2024-06-27 22:15:26,338 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 535 transitions, 8922 flow [2024-06-27 22:15:26,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:15:26,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:26,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:26,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 22:15:26,339 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:15:26,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:26,340 INFO L85 PathProgramCache]: Analyzing trace with hash -559082238, now seen corresponding path program 2 times [2024-06-27 22:15:26,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:26,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202228291] [2024-06-27 22:15:26,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:26,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:27,934 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 22:15:27,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:27,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202228291] [2024-06-27 22:15:27,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202228291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:27,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:27,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:15:27,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803564483] [2024-06-27 22:15:27,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:27,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:15:27,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:27,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:15:27,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:15:28,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:15:28,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 535 transitions, 8922 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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 22:15:28,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:28,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:15:28,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:31,568 INFO L124 PetriNetUnfolderBase]: 7921/13494 cut-off events. [2024-06-27 22:15:31,568 INFO L125 PetriNetUnfolderBase]: For 762343/762343 co-relation queries the response was YES. [2024-06-27 22:15:31,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108965 conditions, 13494 events. 7921/13494 cut-off events. For 762343/762343 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 101536 event pairs, 1978 based on Foata normal form. 1/13114 useless extension candidates. Maximal degree in co-relation 108820. Up to 11431 conditions per place. [2024-06-27 22:15:31,895 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 486 selfloop transitions, 64 changer transitions 0/560 dead transitions. [2024-06-27 22:15:31,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 560 transitions, 10302 flow [2024-06-27 22:15:31,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:15:31,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:15:31,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-27 22:15:31,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47074468085106386 [2024-06-27 22:15:31,896 INFO L175 Difference]: Start difference. First operand has 294 places, 535 transitions, 8922 flow. Second operand 8 states and 177 transitions. [2024-06-27 22:15:31,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 560 transitions, 10302 flow [2024-06-27 22:15:34,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 560 transitions, 9886 flow, removed 74 selfloop flow, removed 5 redundant places. [2024-06-27 22:15:34,311 INFO L231 Difference]: Finished difference. Result has 297 places, 538 transitions, 8694 flow [2024-06-27 22:15:34,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8506, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8694, PETRI_PLACES=297, PETRI_TRANSITIONS=538} [2024-06-27 22:15:34,312 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 244 predicate places. [2024-06-27 22:15:34,312 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 538 transitions, 8694 flow [2024-06-27 22:15:34,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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 22:15:34,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:34,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:34,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 22:15:34,312 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:15:34,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:34,313 INFO L85 PathProgramCache]: Analyzing trace with hash -559082641, now seen corresponding path program 2 times [2024-06-27 22:15:34,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:34,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942318641] [2024-06-27 22:15:34,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:34,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:35,376 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 22:15:35,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:35,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942318641] [2024-06-27 22:15:35,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942318641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:35,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:35,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:15:35,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384083465] [2024-06-27 22:15:35,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:35,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:15:35,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:35,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:15:35,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:15:35,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:15:35,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 538 transitions, 8694 flow. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 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 22:15:35,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:35,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:15:35,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:38,755 INFO L124 PetriNetUnfolderBase]: 7918/13506 cut-off events. [2024-06-27 22:15:38,755 INFO L125 PetriNetUnfolderBase]: For 746399/746399 co-relation queries the response was YES. [2024-06-27 22:15:38,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108312 conditions, 13506 events. 7918/13506 cut-off events. For 746399/746399 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 101738 event pairs, 1982 based on Foata normal form. 1/13122 useless extension candidates. Maximal degree in co-relation 108165. Up to 11408 conditions per place. [2024-06-27 22:15:38,935 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 477 selfloop transitions, 75 changer transitions 0/562 dead transitions. [2024-06-27 22:15:38,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 562 transitions, 10110 flow [2024-06-27 22:15:38,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:15:38,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:15:38,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 22:15:38,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49544072948328266 [2024-06-27 22:15:38,936 INFO L175 Difference]: Start difference. First operand has 297 places, 538 transitions, 8694 flow. Second operand 7 states and 163 transitions. [2024-06-27 22:15:38,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 562 transitions, 10110 flow [2024-06-27 22:15:41,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 562 transitions, 9946 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 22:15:41,483 INFO L231 Difference]: Finished difference. Result has 298 places, 542 transitions, 8827 flow [2024-06-27 22:15:41,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8530, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8827, PETRI_PLACES=298, PETRI_TRANSITIONS=542} [2024-06-27 22:15:41,484 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 245 predicate places. [2024-06-27 22:15:41,484 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 542 transitions, 8827 flow [2024-06-27 22:15:41,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 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 22:15:41,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:41,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:41,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 22:15:41,485 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:15:41,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:41,485 INFO L85 PathProgramCache]: Analyzing trace with hash -940424316, now seen corresponding path program 3 times [2024-06-27 22:15:41,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:41,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170016763] [2024-06-27 22:15:41,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:41,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:43,058 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 22:15:43,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:43,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170016763] [2024-06-27 22:15:43,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170016763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:43,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:43,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:15:43,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182618601] [2024-06-27 22:15:43,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:43,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:15:43,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:43,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:15:43,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:15:43,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:15:43,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 542 transitions, 8827 flow. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 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 22:15:43,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:43,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:15:43,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:46,653 INFO L124 PetriNetUnfolderBase]: 7960/13603 cut-off events. [2024-06-27 22:15:46,653 INFO L125 PetriNetUnfolderBase]: For 776428/776428 co-relation queries the response was YES. [2024-06-27 22:15:46,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110224 conditions, 13603 events. 7960/13603 cut-off events. For 776428/776428 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 102874 event pairs, 1982 based on Foata normal form. 1/13209 useless extension candidates. Maximal degree in co-relation 110076. Up to 11418 conditions per place. [2024-06-27 22:15:46,868 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 490 selfloop transitions, 76 changer transitions 0/576 dead transitions. [2024-06-27 22:15:46,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 576 transitions, 10543 flow [2024-06-27 22:15:46,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:15:46,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:15:46,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-27 22:15:46,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48138297872340424 [2024-06-27 22:15:46,869 INFO L175 Difference]: Start difference. First operand has 298 places, 542 transitions, 8827 flow. Second operand 8 states and 181 transitions. [2024-06-27 22:15:46,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 576 transitions, 10543 flow [2024-06-27 22:15:49,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 576 transitions, 10274 flow, removed 62 selfloop flow, removed 5 redundant places. [2024-06-27 22:15:49,658 INFO L231 Difference]: Finished difference. Result has 302 places, 551 transitions, 8898 flow [2024-06-27 22:15:49,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8558, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8898, PETRI_PLACES=302, PETRI_TRANSITIONS=551} [2024-06-27 22:15:49,659 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 249 predicate places. [2024-06-27 22:15:49,659 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 551 transitions, 8898 flow [2024-06-27 22:15:49,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 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 22:15:49,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:49,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:49,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 22:15:49,660 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:15:49,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:49,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1844018018, now seen corresponding path program 11 times [2024-06-27 22:15:49,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:49,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494226384] [2024-06-27 22:15:49,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:49,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:51,156 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 22:15:51,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:51,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494226384] [2024-06-27 22:15:51,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494226384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:51,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:51,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:15:51,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35815637] [2024-06-27 22:15:51,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:51,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:15:51,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:51,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:15:51,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:15:51,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:15:51,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 551 transitions, 8898 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 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 22:15:51,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:51,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:15:51,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand