./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix052_pso.opt_rmo.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/mix052_pso.opt_rmo.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/mix052_pso.opt_rmo.opt_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix052_pso.opt_rmo.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 22:28:13,154 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:28:13,229 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:28:13,233 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:28:13,233 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:28:13,264 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:28:13,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:28:13,268 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:28:13,268 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:28:13,271 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:28:13,271 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:28:13,271 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:28:13,272 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:28:13,273 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:28:13,273 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:28:13,274 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:28:13,274 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:28:13,274 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:28:13,274 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:28:13,275 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:28:13,275 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:28:13,276 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:28:13,276 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:28:13,276 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:28:13,276 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:28:13,276 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:28:13,277 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:28:13,277 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:28:13,277 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:28:13,277 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:28:13,278 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:28:13,278 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:28:13,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:28:13,279 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:28:13,279 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:28:13,279 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:28:13,279 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:28:13,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:28:13,279 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:28:13,280 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:28:13,280 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:28:13,280 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:28:13,280 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:28:13,280 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:28:13,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:28:13,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:28:13,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:28:13,510 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:28:13,527 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:28:13,528 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix052_pso.opt_rmo.opt_tso.opt.yml/witness.yml [2024-06-27 22:28:13,647 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:28:13,648 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:28:13,650 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix052_pso.opt_rmo.opt_tso.opt.i [2024-06-27 22:28:14,698 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:28:14,939 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:28:14,943 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix052_pso.opt_rmo.opt_tso.opt.i [2024-06-27 22:28:14,955 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/152a582f5/7eedaf29fdfc41ef94b7a597d60ce953/FLAG10e14ee9b [2024-06-27 22:28:14,969 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/152a582f5/7eedaf29fdfc41ef94b7a597d60ce953 [2024-06-27 22:28:14,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:28:14,971 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:28:14,974 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:28:14,974 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:28:14,978 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:28:14,979 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:28:13" (1/2) ... [2024-06-27 22:28:14,979 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b14b3ca and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:28:14, skipping insertion in model container [2024-06-27 22:28:14,980 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:28:13" (1/2) ... [2024-06-27 22:28:14,981 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@111a97d9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:28:14, skipping insertion in model container [2024-06-27 22:28:14,981 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:28:14" (2/2) ... [2024-06-27 22:28:14,982 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b14b3ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:14, skipping insertion in model container [2024-06-27 22:28:14,983 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:28:14" (2/2) ... [2024-06-27 22:28:14,983 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:28:15,009 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:28:15,010 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y$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$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EAX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EAX) - (long long )z >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 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$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:28:15,010 INFO L97 edCorrectnessWitness]: Location invariant before [L828-L828] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y$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$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EAX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EAX) - (long long )z >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 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$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:28:15,010 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y$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$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EAX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EAX) - (long long )z >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 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$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:28:15,010 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:28:15,011 INFO L106 edCorrectnessWitness]: ghost_update [L824-L824] multithreaded = 1; [2024-06-27 22:28:15,053 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:28:15,209 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/mix052_pso.opt_rmo.opt_tso.opt.i[964,977] [2024-06-27 22:28:15,306 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:28:15,313 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:28:15,342 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/mix052_pso.opt_rmo.opt_tso.opt.i[964,977] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:28:15,444 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:28:15,494 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:28:15,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:15 WrapperNode [2024-06-27 22:28:15,495 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:28:15,496 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:28:15,497 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:28:15,497 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:28:15,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:15" (1/1) ... [2024-06-27 22:28:15,536 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:15" (1/1) ... [2024-06-27 22:28:15,579 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 121 [2024-06-27 22:28:15,580 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:28:15,581 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:28:15,581 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:28:15,581 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:28:15,589 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:15" (1/1) ... [2024-06-27 22:28:15,589 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:15" (1/1) ... [2024-06-27 22:28:15,605 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:15" (1/1) ... [2024-06-27 22:28:15,622 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 22:28:15,627 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:15" (1/1) ... [2024-06-27 22:28:15,627 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:15" (1/1) ... [2024-06-27 22:28:15,636 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:15" (1/1) ... [2024-06-27 22:28:15,640 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:15" (1/1) ... [2024-06-27 22:28:15,646 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:15" (1/1) ... [2024-06-27 22:28:15,647 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:15" (1/1) ... [2024-06-27 22:28:15,652 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:28:15,653 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:28:15,653 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:28:15,653 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:28:15,654 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:15" (1/1) ... [2024-06-27 22:28:15,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:28:15,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:28:15,678 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 22:28:15,680 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 22:28:15,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:28:15,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:28:15,717 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:28:15,717 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:28:15,717 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:28:15,717 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:28:15,717 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:28:15,717 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:28:15,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:28:15,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:28:15,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:28:15,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:28:15,720 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 22:28:15,839 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:28:15,841 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:28:16,200 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:28:16,200 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:28:16,325 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:28:16,325 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:28:16,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:28:16 BoogieIcfgContainer [2024-06-27 22:28:16,326 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:28:16,327 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:28:16,327 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:28:16,329 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:28:16,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:28:13" (1/4) ... [2024-06-27 22:28:16,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4461bfb2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:28:16, skipping insertion in model container [2024-06-27 22:28:16,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:28:14" (2/4) ... [2024-06-27 22:28:16,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4461bfb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:28:16, skipping insertion in model container [2024-06-27 22:28:16,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:28:15" (3/4) ... [2024-06-27 22:28:16,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4461bfb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:28:16, skipping insertion in model container [2024-06-27 22:28:16,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:28:16" (4/4) ... [2024-06-27 22:28:16,331 INFO L112 eAbstractionObserver]: Analyzing ICFG mix052_pso.opt_rmo.opt_tso.opt.i [2024-06-27 22:28:16,344 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:28:16,344 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 22:28:16,344 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:28:16,382 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:28:16,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 22:28:16,425 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-27 22:28:16,426 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:28:16,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-27 22:28:16,428 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 22:28:16,430 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 95 flow [2024-06-27 22:28:16,436 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:28:16,441 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;@782e6cbe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:28:16,441 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 22:28:16,444 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:28:16,444 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:28:16,444 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:28:16,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:16,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:28:16,445 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 22:28:16,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:16,491 INFO L85 PathProgramCache]: Analyzing trace with hash 338355012, now seen corresponding path program 1 times [2024-06-27 22:28:16,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:16,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219515078] [2024-06-27 22:28:16,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:16,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:17,635 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 22:28:17,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:17,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219515078] [2024-06-27 22:28:17,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219515078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:17,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:17,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:28:17,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560041437] [2024-06-27 22:28:17,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:17,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:28:17,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:17,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:28:17,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:28:17,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-06-27 22:28:17,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:17,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:17,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-06-27 22:28:17,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:18,195 INFO L124 PetriNetUnfolderBase]: 2556/3904 cut-off events. [2024-06-27 22:28:18,195 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-27 22:28:18,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7688 conditions, 3904 events. 2556/3904 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 22368 event pairs, 1492 based on Foata normal form. 150/3848 useless extension candidates. Maximal degree in co-relation 7676. Up to 3705 conditions per place. [2024-06-27 22:28:18,218 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 39 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2024-06-27 22:28:18,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 56 transitions, 213 flow [2024-06-27 22:28:18,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:28:18,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:28:18,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-06-27 22:28:18,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7028985507246377 [2024-06-27 22:28:18,230 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 95 flow. Second operand 3 states and 97 transitions. [2024-06-27 22:28:18,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 56 transitions, 213 flow [2024-06-27 22:28:18,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 56 transitions, 208 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:28:18,237 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 122 flow [2024-06-27 22:28:18,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-06-27 22:28:18,242 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-27 22:28:18,242 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 122 flow [2024-06-27 22:28:18,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:18,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:18,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:18,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:28:18,243 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 22:28:18,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:18,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1257853117, now seen corresponding path program 1 times [2024-06-27 22:28:18,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:18,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114511580] [2024-06-27 22:28:18,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:18,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:18,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:18,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:18,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114511580] [2024-06-27 22:28:18,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114511580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:18,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:18,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:28:18,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224507870] [2024-06-27 22:28:18,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:18,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:28:18,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:18,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:28:18,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:28:18,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:28:18,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:18,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:18,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:28:18,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:19,348 INFO L124 PetriNetUnfolderBase]: 2960/4486 cut-off events. [2024-06-27 22:28:19,349 INFO L125 PetriNetUnfolderBase]: For 663/663 co-relation queries the response was YES. [2024-06-27 22:28:19,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9903 conditions, 4486 events. 2960/4486 cut-off events. For 663/663 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 25927 event pairs, 1576 based on Foata normal form. 3/4286 useless extension candidates. Maximal degree in co-relation 9891. Up to 4251 conditions per place. [2024-06-27 22:28:19,368 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 51 selfloop transitions, 7 changer transitions 0/70 dead transitions. [2024-06-27 22:28:19,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 300 flow [2024-06-27 22:28:19,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:28:19,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:28:19,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-06-27 22:28:19,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6630434782608695 [2024-06-27 22:28:19,370 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 122 flow. Second operand 4 states and 122 transitions. [2024-06-27 22:28:19,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 300 flow [2024-06-27 22:28:19,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:28:19,372 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 160 flow [2024-06-27 22:28:19,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-06-27 22:28:19,373 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-06-27 22:28:19,373 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 160 flow [2024-06-27 22:28:19,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:19,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:19,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:19,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:28:19,374 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 22:28:19,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:19,375 INFO L85 PathProgramCache]: Analyzing trace with hash -338739853, now seen corresponding path program 1 times [2024-06-27 22:28:19,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:19,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368774636] [2024-06-27 22:28:19,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:19,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:20,156 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 22:28:20,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:20,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368774636] [2024-06-27 22:28:20,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368774636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:20,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:20,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:28:20,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546783252] [2024-06-27 22:28:20,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:20,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:28:20,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:20,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:28:20,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:28:20,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:28:20,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:20,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:20,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:28:20,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:20,686 INFO L124 PetriNetUnfolderBase]: 2866/4263 cut-off events. [2024-06-27 22:28:20,686 INFO L125 PetriNetUnfolderBase]: For 1725/1725 co-relation queries the response was YES. [2024-06-27 22:28:20,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10473 conditions, 4263 events. 2866/4263 cut-off events. For 1725/1725 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 23608 event pairs, 871 based on Foata normal form. 7/4150 useless extension candidates. Maximal degree in co-relation 10459. Up to 3913 conditions per place. [2024-06-27 22:28:20,707 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 71 selfloop transitions, 16 changer transitions 0/99 dead transitions. [2024-06-27 22:28:20,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 99 transitions, 484 flow [2024-06-27 22:28:20,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:28:20,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:28:20,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-06-27 22:28:20,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7130434782608696 [2024-06-27 22:28:20,709 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 160 flow. Second operand 5 states and 164 transitions. [2024-06-27 22:28:20,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 99 transitions, 484 flow [2024-06-27 22:28:20,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 99 transitions, 470 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 22:28:20,725 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 265 flow [2024-06-27 22:28:20,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=265, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2024-06-27 22:28:20,726 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2024-06-27 22:28:20,726 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 265 flow [2024-06-27 22:28:20,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:20,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:20,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:20,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:28:20,727 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:20,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:20,727 INFO L85 PathProgramCache]: Analyzing trace with hash 31461714, now seen corresponding path program 1 times [2024-06-27 22:28:20,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:20,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281176531] [2024-06-27 22:28:20,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:20,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:21,510 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 22:28:21,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:21,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281176531] [2024-06-27 22:28:21,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281176531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:21,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:21,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:28:21,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653209598] [2024-06-27 22:28:21,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:21,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:28:21,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:21,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:28:21,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:28:21,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:28:21,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 265 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 22:28:21,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:21,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:28:21,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:22,137 INFO L124 PetriNetUnfolderBase]: 3007/5100 cut-off events. [2024-06-27 22:28:22,138 INFO L125 PetriNetUnfolderBase]: For 7378/7378 co-relation queries the response was YES. [2024-06-27 22:28:22,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13799 conditions, 5100 events. 3007/5100 cut-off events. For 7378/7378 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 33299 event pairs, 1092 based on Foata normal form. 108/5047 useless extension candidates. Maximal degree in co-relation 13782. Up to 3842 conditions per place. [2024-06-27 22:28:22,166 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 83 selfloop transitions, 18 changer transitions 0/113 dead transitions. [2024-06-27 22:28:22,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 113 transitions, 623 flow [2024-06-27 22:28:22,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:28:22,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:28:22,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2024-06-27 22:28:22,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6920289855072463 [2024-06-27 22:28:22,168 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 265 flow. Second operand 6 states and 191 transitions. [2024-06-27 22:28:22,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 113 transitions, 623 flow [2024-06-27 22:28:22,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 113 transitions, 615 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-27 22:28:22,179 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 315 flow [2024-06-27 22:28:22,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=315, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2024-06-27 22:28:22,181 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2024-06-27 22:28:22,181 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 315 flow [2024-06-27 22:28:22,181 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 22:28:22,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:22,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:22,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:28:22,182 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 22:28:22,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:22,182 INFO L85 PathProgramCache]: Analyzing trace with hash -609339275, now seen corresponding path program 1 times [2024-06-27 22:28:22,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:22,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57741314] [2024-06-27 22:28:22,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:22,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:23,108 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 22:28:23,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:23,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57741314] [2024-06-27 22:28:23,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57741314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:23,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:23,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:28:23,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716131576] [2024-06-27 22:28:23,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:23,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:28:23,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:23,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:28:23,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:28:23,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 22:28:23,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 315 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:23,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:23,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 22:28:23,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:23,800 INFO L124 PetriNetUnfolderBase]: 2929/4986 cut-off events. [2024-06-27 22:28:23,800 INFO L125 PetriNetUnfolderBase]: For 9932/9932 co-relation queries the response was YES. [2024-06-27 22:28:23,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14570 conditions, 4986 events. 2929/4986 cut-off events. For 9932/9932 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 32728 event pairs, 1694 based on Foata normal form. 4/4853 useless extension candidates. Maximal degree in co-relation 14549. Up to 4236 conditions per place. [2024-06-27 22:28:23,827 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 62 selfloop transitions, 10 changer transitions 0/83 dead transitions. [2024-06-27 22:28:23,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 83 transitions, 521 flow [2024-06-27 22:28:23,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:28:23,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:28:23,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-06-27 22:28:23,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5695652173913044 [2024-06-27 22:28:23,828 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 315 flow. Second operand 5 states and 131 transitions. [2024-06-27 22:28:23,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 83 transitions, 521 flow [2024-06-27 22:28:23,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 83 transitions, 475 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 22:28:23,834 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 318 flow [2024-06-27 22:28:23,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=318, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2024-06-27 22:28:23,835 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 15 predicate places. [2024-06-27 22:28:23,835 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 318 flow [2024-06-27 22:28:23,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:23,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:23,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:23,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:28:23,836 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 22:28:23,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:23,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1499655210, now seen corresponding path program 1 times [2024-06-27 22:28:23,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:23,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846604367] [2024-06-27 22:28:23,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:23,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:24,619 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 22:28:24,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:24,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846604367] [2024-06-27 22:28:24,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846604367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:24,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:24,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:28:24,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830890708] [2024-06-27 22:28:24,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:24,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:28:24,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:24,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:28:24,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:28:24,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:28:24,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 318 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 22:28:24,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:24,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:28:24,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:25,633 INFO L124 PetriNetUnfolderBase]: 3738/6131 cut-off events. [2024-06-27 22:28:25,633 INFO L125 PetriNetUnfolderBase]: For 10807/10807 co-relation queries the response was YES. [2024-06-27 22:28:25,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17868 conditions, 6131 events. 3738/6131 cut-off events. For 10807/10807 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 38764 event pairs, 1430 based on Foata normal form. 8/5989 useless extension candidates. Maximal degree in co-relation 17843. Up to 4929 conditions per place. [2024-06-27 22:28:25,664 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 85 selfloop transitions, 31 changer transitions 0/126 dead transitions. [2024-06-27 22:28:25,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 126 transitions, 792 flow [2024-06-27 22:28:25,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:28:25,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:28:25,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-06-27 22:28:25,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5962732919254659 [2024-06-27 22:28:25,666 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 318 flow. Second operand 7 states and 192 transitions. [2024-06-27 22:28:25,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 126 transitions, 792 flow [2024-06-27 22:28:25,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 126 transitions, 773 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:28:25,674 INFO L231 Difference]: Finished difference. Result has 73 places, 78 transitions, 499 flow [2024-06-27 22:28:25,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=499, PETRI_PLACES=73, PETRI_TRANSITIONS=78} [2024-06-27 22:28:25,674 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 21 predicate places. [2024-06-27 22:28:25,675 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 78 transitions, 499 flow [2024-06-27 22:28:25,675 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 22:28:25,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:25,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:25,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:28:25,675 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 22:28:25,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:25,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1644230538, now seen corresponding path program 2 times [2024-06-27 22:28:25,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:25,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105073093] [2024-06-27 22:28:25,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:25,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:26,747 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 22:28:26,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:26,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105073093] [2024-06-27 22:28:26,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105073093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:26,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:26,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:28:26,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755908682] [2024-06-27 22:28:26,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:26,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:28:26,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:26,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:28:26,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:28:26,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:28:26,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 78 transitions, 499 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 22:28:26,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:26,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:28:26,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:27,709 INFO L124 PetriNetUnfolderBase]: 3994/6013 cut-off events. [2024-06-27 22:28:27,709 INFO L125 PetriNetUnfolderBase]: For 14062/14064 co-relation queries the response was YES. [2024-06-27 22:28:27,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20482 conditions, 6013 events. 3994/6013 cut-off events. For 14062/14064 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 34392 event pairs, 990 based on Foata normal form. 14/5997 useless extension candidates. Maximal degree in co-relation 20454. Up to 5082 conditions per place. [2024-06-27 22:28:27,740 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 77 selfloop transitions, 44 changer transitions 0/131 dead transitions. [2024-06-27 22:28:27,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 131 transitions, 1033 flow [2024-06-27 22:28:27,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:28:27,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:28:27,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-06-27 22:28:27,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5978260869565217 [2024-06-27 22:28:27,742 INFO L175 Difference]: Start difference. First operand has 73 places, 78 transitions, 499 flow. Second operand 6 states and 165 transitions. [2024-06-27 22:28:27,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 131 transitions, 1033 flow [2024-06-27 22:28:27,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 131 transitions, 984 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-27 22:28:27,755 INFO L231 Difference]: Finished difference. Result has 78 places, 94 transitions, 743 flow [2024-06-27 22:28:27,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=468, 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=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=743, PETRI_PLACES=78, PETRI_TRANSITIONS=94} [2024-06-27 22:28:27,756 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 26 predicate places. [2024-06-27 22:28:27,756 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 94 transitions, 743 flow [2024-06-27 22:28:27,757 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 22:28:27,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:27,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:27,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:28:27,757 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 22:28:27,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:27,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1459179712, now seen corresponding path program 3 times [2024-06-27 22:28:27,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:27,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057245749] [2024-06-27 22:28:27,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:27,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:28,723 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 22:28:28,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:28,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057245749] [2024-06-27 22:28:28,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057245749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:28,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:28,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:28:28,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818248507] [2024-06-27 22:28:28,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:28,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:28:28,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:28,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:28:28,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:28:28,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:28:28,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 94 transitions, 743 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 22:28:28,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:28,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:28:28,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:29,724 INFO L124 PetriNetUnfolderBase]: 3952/5916 cut-off events. [2024-06-27 22:28:29,724 INFO L125 PetriNetUnfolderBase]: For 17212/17214 co-relation queries the response was YES. [2024-06-27 22:28:29,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20796 conditions, 5916 events. 3952/5916 cut-off events. For 17212/17214 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 33447 event pairs, 952 based on Foata normal form. 8/5901 useless extension candidates. Maximal degree in co-relation 20764. Up to 5026 conditions per place. [2024-06-27 22:28:29,760 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 72 selfloop transitions, 48 changer transitions 0/130 dead transitions. [2024-06-27 22:28:29,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 130 transitions, 1095 flow [2024-06-27 22:28:29,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:28:29,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:28:29,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-27 22:28:29,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-27 22:28:29,762 INFO L175 Difference]: Start difference. First operand has 78 places, 94 transitions, 743 flow. Second operand 6 states and 161 transitions. [2024-06-27 22:28:29,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 130 transitions, 1095 flow [2024-06-27 22:28:29,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 130 transitions, 1048 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-27 22:28:29,778 INFO L231 Difference]: Finished difference. Result has 83 places, 94 transitions, 804 flow [2024-06-27 22:28:29,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=804, PETRI_PLACES=83, PETRI_TRANSITIONS=94} [2024-06-27 22:28:29,779 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 31 predicate places. [2024-06-27 22:28:29,779 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 94 transitions, 804 flow [2024-06-27 22:28:29,779 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 22:28:29,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:29,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:29,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:28:29,780 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 22:28:29,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:29,780 INFO L85 PathProgramCache]: Analyzing trace with hash 673292626, now seen corresponding path program 1 times [2024-06-27 22:28:29,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:29,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218058350] [2024-06-27 22:28:29,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:29,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:31,702 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 22:28:31,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:31,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218058350] [2024-06-27 22:28:31,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218058350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:31,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:31,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:28:31,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228204642] [2024-06-27 22:28:31,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:31,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:28:31,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:31,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:28:31,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:28:31,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 22:28:31,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 94 transitions, 804 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 22:28:31,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:31,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 22:28:31,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:32,863 INFO L124 PetriNetUnfolderBase]: 3506/5810 cut-off events. [2024-06-27 22:28:32,863 INFO L125 PetriNetUnfolderBase]: For 19857/19859 co-relation queries the response was YES. [2024-06-27 22:28:32,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19713 conditions, 5810 events. 3506/5810 cut-off events. For 19857/19859 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 37177 event pairs, 1706 based on Foata normal form. 14/5714 useless extension candidates. Maximal degree in co-relation 19677. Up to 4842 conditions per place. [2024-06-27 22:28:32,892 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 123 selfloop transitions, 16 changer transitions 0/150 dead transitions. [2024-06-27 22:28:32,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 150 transitions, 1282 flow [2024-06-27 22:28:32,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:28:32,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:28:32,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 22:28:32,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.538647342995169 [2024-06-27 22:28:32,895 INFO L175 Difference]: Start difference. First operand has 83 places, 94 transitions, 804 flow. Second operand 9 states and 223 transitions. [2024-06-27 22:28:32,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 150 transitions, 1282 flow [2024-06-27 22:28:32,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 150 transitions, 1228 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 22:28:32,914 INFO L231 Difference]: Finished difference. Result has 92 places, 100 transitions, 867 flow [2024-06-27 22:28:32,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=867, PETRI_PLACES=92, PETRI_TRANSITIONS=100} [2024-06-27 22:28:32,914 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 40 predicate places. [2024-06-27 22:28:32,915 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 100 transitions, 867 flow [2024-06-27 22:28:32,915 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 22:28:32,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:32,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:32,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:28:32,915 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:32,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:32,916 INFO L85 PathProgramCache]: Analyzing trace with hash 172925977, now seen corresponding path program 1 times [2024-06-27 22:28:32,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:32,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213868926] [2024-06-27 22:28:32,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:32,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:33,729 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 22:28:33,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:33,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213868926] [2024-06-27 22:28:33,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213868926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:33,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:33,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:28:33,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006103140] [2024-06-27 22:28:33,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:33,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:28:33,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:33,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:28:33,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:28:33,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 22:28:33,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 100 transitions, 867 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 22:28:33,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:33,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 22:28:33,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:34,395 INFO L124 PetriNetUnfolderBase]: 3503/5943 cut-off events. [2024-06-27 22:28:34,396 INFO L125 PetriNetUnfolderBase]: For 23936/23938 co-relation queries the response was YES. [2024-06-27 22:28:34,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20334 conditions, 5943 events. 3503/5943 cut-off events. For 23936/23938 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 39260 event pairs, 1892 based on Foata normal form. 1/5790 useless extension candidates. Maximal degree in co-relation 20294. Up to 5075 conditions per place. [2024-06-27 22:28:34,432 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 96 selfloop transitions, 12 changer transitions 0/119 dead transitions. [2024-06-27 22:28:34,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 119 transitions, 1178 flow [2024-06-27 22:28:34,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:28:34,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:28:34,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-06-27 22:28:34,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5304347826086957 [2024-06-27 22:28:34,434 INFO L175 Difference]: Start difference. First operand has 92 places, 100 transitions, 867 flow. Second operand 5 states and 122 transitions. [2024-06-27 22:28:34,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 119 transitions, 1178 flow [2024-06-27 22:28:34,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 119 transitions, 1110 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 22:28:34,462 INFO L231 Difference]: Finished difference. Result has 92 places, 108 transitions, 914 flow [2024-06-27 22:28:34,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=914, PETRI_PLACES=92, PETRI_TRANSITIONS=108} [2024-06-27 22:28:34,462 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 40 predicate places. [2024-06-27 22:28:34,462 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 108 transitions, 914 flow [2024-06-27 22:28:34,463 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 22:28:34,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:34,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:34,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:28:34,465 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 22:28:34,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:34,465 INFO L85 PathProgramCache]: Analyzing trace with hash -2123651549, now seen corresponding path program 1 times [2024-06-27 22:28:34,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:34,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633785469] [2024-06-27 22:28:34,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:34,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:35,481 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 22:28:35,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:35,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633785469] [2024-06-27 22:28:35,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633785469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:35,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:35,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:28:35,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561204515] [2024-06-27 22:28:35,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:35,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:28:35,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:35,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:28:35,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:28:35,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:28:35,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 108 transitions, 914 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:35,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:35,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:28:35,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:36,760 INFO L124 PetriNetUnfolderBase]: 4656/7562 cut-off events. [2024-06-27 22:28:36,760 INFO L125 PetriNetUnfolderBase]: For 33560/33564 co-relation queries the response was YES. [2024-06-27 22:28:36,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27170 conditions, 7562 events. 4656/7562 cut-off events. For 33560/33564 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 48884 event pairs, 1421 based on Foata normal form. 6/7382 useless extension candidates. Maximal degree in co-relation 27129. Up to 5300 conditions per place. [2024-06-27 22:28:36,801 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 116 selfloop transitions, 52 changer transitions 0/178 dead transitions. [2024-06-27 22:28:36,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 178 transitions, 1571 flow [2024-06-27 22:28:36,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:28:36,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:28:36,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 222 transitions. [2024-06-27 22:28:36,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6032608695652174 [2024-06-27 22:28:36,803 INFO L175 Difference]: Start difference. First operand has 92 places, 108 transitions, 914 flow. Second operand 8 states and 222 transitions. [2024-06-27 22:28:36,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 178 transitions, 1571 flow [2024-06-27 22:28:36,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 178 transitions, 1554 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-27 22:28:36,834 INFO L231 Difference]: Finished difference. Result has 100 places, 116 transitions, 1111 flow [2024-06-27 22:28:36,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=897, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1111, PETRI_PLACES=100, PETRI_TRANSITIONS=116} [2024-06-27 22:28:36,834 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 48 predicate places. [2024-06-27 22:28:36,834 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 116 transitions, 1111 flow [2024-06-27 22:28:36,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:36,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:36,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:36,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:28:36,835 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 22:28:36,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:36,835 INFO L85 PathProgramCache]: Analyzing trace with hash -319031387, now seen corresponding path program 2 times [2024-06-27 22:28:36,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:36,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057035117] [2024-06-27 22:28:36,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:36,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:37,818 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 22:28:37,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:37,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057035117] [2024-06-27 22:28:37,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057035117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:37,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:37,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:28:37,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049975001] [2024-06-27 22:28:37,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:37,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:28:37,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:37,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:28:37,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:28:37,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:28:37,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 116 transitions, 1111 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:37,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:37,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:28:37,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:39,148 INFO L124 PetriNetUnfolderBase]: 4945/8044 cut-off events. [2024-06-27 22:28:39,148 INFO L125 PetriNetUnfolderBase]: For 48226/48236 co-relation queries the response was YES. [2024-06-27 22:28:39,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32032 conditions, 8044 events. 4945/8044 cut-off events. For 48226/48236 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 52495 event pairs, 1487 based on Foata normal form. 32/7888 useless extension candidates. Maximal degree in co-relation 31987. Up to 6155 conditions per place. [2024-06-27 22:28:39,196 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 114 selfloop transitions, 54 changer transitions 0/178 dead transitions. [2024-06-27 22:28:39,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 178 transitions, 1701 flow [2024-06-27 22:28:39,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:28:39,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:28:39,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-06-27 22:28:39,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.595108695652174 [2024-06-27 22:28:39,198 INFO L175 Difference]: Start difference. First operand has 100 places, 116 transitions, 1111 flow. Second operand 8 states and 219 transitions. [2024-06-27 22:28:39,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 178 transitions, 1701 flow [2024-06-27 22:28:39,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 178 transitions, 1614 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-27 22:28:39,246 INFO L231 Difference]: Finished difference. Result has 104 places, 120 transitions, 1199 flow [2024-06-27 22:28:39,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1199, PETRI_PLACES=104, PETRI_TRANSITIONS=120} [2024-06-27 22:28:39,246 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 52 predicate places. [2024-06-27 22:28:39,246 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 120 transitions, 1199 flow [2024-06-27 22:28:39,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:39,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:39,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:39,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:28:39,247 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 22:28:39,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:39,248 INFO L85 PathProgramCache]: Analyzing trace with hash -88552185, now seen corresponding path program 3 times [2024-06-27 22:28:39,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:39,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629945157] [2024-06-27 22:28:39,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:39,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:40,038 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 22:28:40,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:40,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629945157] [2024-06-27 22:28:40,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629945157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:40,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:40,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:28:40,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125775818] [2024-06-27 22:28:40,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:40,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:28:40,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:40,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:28:40,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:28:40,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-06-27 22:28:40,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 120 transitions, 1199 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:40,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:40,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-06-27 22:28:40,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:41,305 INFO L124 PetriNetUnfolderBase]: 4508/7782 cut-off events. [2024-06-27 22:28:41,305 INFO L125 PetriNetUnfolderBase]: For 56502/57233 co-relation queries the response was YES. [2024-06-27 22:28:41,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32817 conditions, 7782 events. 4508/7782 cut-off events. For 56502/57233 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 55727 event pairs, 703 based on Foata normal form. 235/7606 useless extension candidates. Maximal degree in co-relation 32770. Up to 3662 conditions per place. [2024-06-27 22:28:41,351 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 110 selfloop transitions, 58 changer transitions 0/199 dead transitions. [2024-06-27 22:28:41,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 199 transitions, 1968 flow [2024-06-27 22:28:41,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:28:41,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:28:41,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 258 transitions. [2024-06-27 22:28:41,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6231884057971014 [2024-06-27 22:28:41,355 INFO L175 Difference]: Start difference. First operand has 104 places, 120 transitions, 1199 flow. Second operand 9 states and 258 transitions. [2024-06-27 22:28:41,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 199 transitions, 1968 flow [2024-06-27 22:28:41,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 199 transitions, 1844 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 22:28:41,424 INFO L231 Difference]: Finished difference. Result has 111 places, 130 transitions, 1401 flow [2024-06-27 22:28:41,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1075, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1401, PETRI_PLACES=111, PETRI_TRANSITIONS=130} [2024-06-27 22:28:41,425 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 59 predicate places. [2024-06-27 22:28:41,425 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 130 transitions, 1401 flow [2024-06-27 22:28:41,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:41,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:41,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:41,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:28:41,426 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:41,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:41,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1737988382, now seen corresponding path program 1 times [2024-06-27 22:28:41,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:41,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816735717] [2024-06-27 22:28:41,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:41,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:42,284 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 22:28:42,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:42,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816735717] [2024-06-27 22:28:42,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816735717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:42,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:42,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:28:42,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027966767] [2024-06-27 22:28:42,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:42,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:28:42,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:42,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:28:42,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:28:42,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:28:42,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 130 transitions, 1401 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 22:28:42,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:42,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:28:42,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:43,613 INFO L124 PetriNetUnfolderBase]: 5861/9812 cut-off events. [2024-06-27 22:28:43,614 INFO L125 PetriNetUnfolderBase]: For 76182/76182 co-relation queries the response was YES. [2024-06-27 22:28:43,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42546 conditions, 9812 events. 5861/9812 cut-off events. For 76182/76182 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 68869 event pairs, 2637 based on Foata normal form. 1/9548 useless extension candidates. Maximal degree in co-relation 42494. Up to 8442 conditions per place. [2024-06-27 22:28:43,693 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 137 selfloop transitions, 24 changer transitions 0/171 dead transitions. [2024-06-27 22:28:43,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 171 transitions, 1981 flow [2024-06-27 22:28:43,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:28:43,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:28:43,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 22:28:43,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186335403726708 [2024-06-27 22:28:43,695 INFO L175 Difference]: Start difference. First operand has 111 places, 130 transitions, 1401 flow. Second operand 7 states and 167 transitions. [2024-06-27 22:28:43,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 171 transitions, 1981 flow [2024-06-27 22:28:43,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 171 transitions, 1859 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-27 22:28:43,808 INFO L231 Difference]: Finished difference. Result has 116 places, 147 transitions, 1569 flow [2024-06-27 22:28:43,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1292, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1569, PETRI_PLACES=116, PETRI_TRANSITIONS=147} [2024-06-27 22:28:43,809 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 64 predicate places. [2024-06-27 22:28:43,809 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 147 transitions, 1569 flow [2024-06-27 22:28:43,809 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 22:28:43,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:43,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:43,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:28:43,810 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 22:28:43,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:43,810 INFO L85 PathProgramCache]: Analyzing trace with hash -983020383, now seen corresponding path program 4 times [2024-06-27 22:28:43,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:43,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170573329] [2024-06-27 22:28:43,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:43,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:45,112 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 22:28:45,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:45,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170573329] [2024-06-27 22:28:45,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170573329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:45,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:45,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:28:45,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272251576] [2024-06-27 22:28:45,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:45,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:28:45,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:45,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:28:45,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:28:45,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:28:45,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 147 transitions, 1569 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:45,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:45,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:28:45,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:46,778 INFO L124 PetriNetUnfolderBase]: 6915/10500 cut-off events. [2024-06-27 22:28:46,779 INFO L125 PetriNetUnfolderBase]: For 95575/95577 co-relation queries the response was YES. [2024-06-27 22:28:46,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49018 conditions, 10500 events. 6915/10500 cut-off events. For 95575/95577 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 66025 event pairs, 1368 based on Foata normal form. 48/10459 useless extension candidates. Maximal degree in co-relation 48964. Up to 8381 conditions per place. [2024-06-27 22:28:46,851 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 134 selfloop transitions, 67 changer transitions 0/211 dead transitions. [2024-06-27 22:28:46,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 211 transitions, 2372 flow [2024-06-27 22:28:46,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:28:46,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:28:46,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-27 22:28:46,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5597826086956522 [2024-06-27 22:28:46,853 INFO L175 Difference]: Start difference. First operand has 116 places, 147 transitions, 1569 flow. Second operand 8 states and 206 transitions. [2024-06-27 22:28:46,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 211 transitions, 2372 flow [2024-06-27 22:28:46,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 211 transitions, 2342 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-06-27 22:28:46,997 INFO L231 Difference]: Finished difference. Result has 123 places, 160 transitions, 1900 flow [2024-06-27 22:28:46,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1541, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1900, PETRI_PLACES=123, PETRI_TRANSITIONS=160} [2024-06-27 22:28:46,998 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 71 predicate places. [2024-06-27 22:28:46,998 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 160 transitions, 1900 flow [2024-06-27 22:28:46,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:46,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:46,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:46,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:28:46,999 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 22:28:46,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:46,999 INFO L85 PathProgramCache]: Analyzing trace with hash -285328841, now seen corresponding path program 5 times [2024-06-27 22:28:46,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:46,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327763821] [2024-06-27 22:28:46,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:46,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:48,224 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 22:28:48,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:48,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327763821] [2024-06-27 22:28:48,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327763821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:48,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:48,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:28:48,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071919108] [2024-06-27 22:28:48,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:48,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:28:48,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:48,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:28:48,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:28:48,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:28:48,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 160 transitions, 1900 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:48,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:48,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:28:48,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:50,089 INFO L124 PetriNetUnfolderBase]: 8034/12210 cut-off events. [2024-06-27 22:28:50,089 INFO L125 PetriNetUnfolderBase]: For 126628/126630 co-relation queries the response was YES. [2024-06-27 22:28:50,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61821 conditions, 12210 events. 8034/12210 cut-off events. For 126628/126630 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 78352 event pairs, 1694 based on Foata normal form. 6/12099 useless extension candidates. Maximal degree in co-relation 61764. Up to 8554 conditions per place. [2024-06-27 22:28:50,182 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 147 selfloop transitions, 81 changer transitions 0/238 dead transitions. [2024-06-27 22:28:50,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 238 transitions, 2976 flow [2024-06-27 22:28:50,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:28:50,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:28:50,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-27 22:28:50,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5679347826086957 [2024-06-27 22:28:50,184 INFO L175 Difference]: Start difference. First operand has 123 places, 160 transitions, 1900 flow. Second operand 8 states and 209 transitions. [2024-06-27 22:28:50,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 238 transitions, 2976 flow [2024-06-27 22:28:50,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 238 transitions, 2756 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-27 22:28:50,452 INFO L231 Difference]: Finished difference. Result has 125 places, 183 transitions, 2257 flow [2024-06-27 22:28:50,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1680, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2257, PETRI_PLACES=125, PETRI_TRANSITIONS=183} [2024-06-27 22:28:50,453 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 73 predicate places. [2024-06-27 22:28:50,453 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 183 transitions, 2257 flow [2024-06-27 22:28:50,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:50,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:50,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:50,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:28:50,454 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:50,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:50,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1333276040, now seen corresponding path program 2 times [2024-06-27 22:28:50,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:50,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441043606] [2024-06-27 22:28:50,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:50,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:51,272 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 22:28:51,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:51,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441043606] [2024-06-27 22:28:51,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441043606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:51,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:51,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:28:51,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518939884] [2024-06-27 22:28:51,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:51,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:28:51,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:51,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:28:51,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:28:51,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:28:51,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 183 transitions, 2257 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 22:28:51,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:51,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:28:51,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:53,009 INFO L124 PetriNetUnfolderBase]: 8058/13373 cut-off events. [2024-06-27 22:28:53,010 INFO L125 PetriNetUnfolderBase]: For 134556/134556 co-relation queries the response was YES. [2024-06-27 22:28:53,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64524 conditions, 13373 events. 8058/13373 cut-off events. For 134556/134556 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 96712 event pairs, 3316 based on Foata normal form. 1/13012 useless extension candidates. Maximal degree in co-relation 64466. Up to 11482 conditions per place. [2024-06-27 22:28:53,102 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 172 selfloop transitions, 29 changer transitions 0/211 dead transitions. [2024-06-27 22:28:53,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 211 transitions, 2794 flow [2024-06-27 22:28:53,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:28:53,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:28:53,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-27 22:28:53,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48757763975155277 [2024-06-27 22:28:53,104 INFO L175 Difference]: Start difference. First operand has 125 places, 183 transitions, 2257 flow. Second operand 7 states and 157 transitions. [2024-06-27 22:28:53,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 211 transitions, 2794 flow [2024-06-27 22:28:53,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 211 transitions, 2676 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-27 22:28:53,268 INFO L231 Difference]: Finished difference. Result has 128 places, 194 transitions, 2310 flow [2024-06-27 22:28:53,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2139, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2310, PETRI_PLACES=128, PETRI_TRANSITIONS=194} [2024-06-27 22:28:53,269 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 76 predicate places. [2024-06-27 22:28:53,269 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 194 transitions, 2310 flow [2024-06-27 22:28:53,269 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 22:28:53,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:53,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:53,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:28:53,270 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 22:28:53,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:53,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1506121773, now seen corresponding path program 1 times [2024-06-27 22:28:53,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:53,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234711107] [2024-06-27 22:28:53,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:53,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:55,132 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 22:28:55,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:55,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234711107] [2024-06-27 22:28:55,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234711107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:55,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:55,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:28:55,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948948196] [2024-06-27 22:28:55,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:55,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:28:55,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:55,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:28:55,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:28:55,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:28:55,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 194 transitions, 2310 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 22:28:55,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:55,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:28:55,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:57,297 INFO L124 PetriNetUnfolderBase]: 8386/12845 cut-off events. [2024-06-27 22:28:57,297 INFO L125 PetriNetUnfolderBase]: For 137506/137506 co-relation queries the response was YES. [2024-06-27 22:28:57,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67269 conditions, 12845 events. 8386/12845 cut-off events. For 137506/137506 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 84033 event pairs, 1714 based on Foata normal form. 22/12765 useless extension candidates. Maximal degree in co-relation 67209. Up to 10978 conditions per place. [2024-06-27 22:28:57,402 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 191 selfloop transitions, 86 changer transitions 0/287 dead transitions. [2024-06-27 22:28:57,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 287 transitions, 3608 flow [2024-06-27 22:28:57,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:28:57,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:28:57,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 249 transitions. [2024-06-27 22:28:57,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5413043478260869 [2024-06-27 22:28:57,404 INFO L175 Difference]: Start difference. First operand has 128 places, 194 transitions, 2310 flow. Second operand 10 states and 249 transitions. [2024-06-27 22:28:57,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 287 transitions, 3608 flow [2024-06-27 22:28:57,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 287 transitions, 3559 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-27 22:28:57,634 INFO L231 Difference]: Finished difference. Result has 138 places, 221 transitions, 2939 flow [2024-06-27 22:28:57,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2261, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2939, PETRI_PLACES=138, PETRI_TRANSITIONS=221} [2024-06-27 22:28:57,635 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 86 predicate places. [2024-06-27 22:28:57,635 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 221 transitions, 2939 flow [2024-06-27 22:28:57,635 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 22:28:57,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:57,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:57,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:28:57,636 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 22:28:57,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:57,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1742297133, now seen corresponding path program 2 times [2024-06-27 22:28:57,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:57,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99128751] [2024-06-27 22:28:57,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:57,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:59,518 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 22:28:59,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:59,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99128751] [2024-06-27 22:28:59,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99128751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:59,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:59,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:28:59,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234595616] [2024-06-27 22:28:59,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:59,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:28:59,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:59,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:28:59,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:28:59,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:28:59,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 221 transitions, 2939 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 22:28:59,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:59,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:28:59,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:01,665 INFO L124 PetriNetUnfolderBase]: 8362/12828 cut-off events. [2024-06-27 22:29:01,665 INFO L125 PetriNetUnfolderBase]: For 156239/156239 co-relation queries the response was YES. [2024-06-27 22:29:01,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69530 conditions, 12828 events. 8362/12828 cut-off events. For 156239/156239 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 84068 event pairs, 1845 based on Foata normal form. 8/12722 useless extension candidates. Maximal degree in co-relation 69466. Up to 11224 conditions per place. [2024-06-27 22:29:01,785 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 187 selfloop transitions, 86 changer transitions 0/283 dead transitions. [2024-06-27 22:29:01,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 283 transitions, 3924 flow [2024-06-27 22:29:01,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:29:01,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:29:01,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-27 22:29:01,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-27 22:29:01,787 INFO L175 Difference]: Start difference. First operand has 138 places, 221 transitions, 2939 flow. Second operand 9 states and 225 transitions. [2024-06-27 22:29:01,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 283 transitions, 3924 flow [2024-06-27 22:29:02,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 283 transitions, 3703 flow, removed 60 selfloop flow, removed 4 redundant places. [2024-06-27 22:29:02,127 INFO L231 Difference]: Finished difference. Result has 144 places, 229 transitions, 3121 flow [2024-06-27 22:29:02,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2730, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3121, PETRI_PLACES=144, PETRI_TRANSITIONS=229} [2024-06-27 22:29:02,128 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 92 predicate places. [2024-06-27 22:29:02,128 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 229 transitions, 3121 flow [2024-06-27 22:29:02,128 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 22:29:02,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:02,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:02,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:29:02,129 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:02,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:02,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1735802013, now seen corresponding path program 3 times [2024-06-27 22:29:02,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:02,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768352138] [2024-06-27 22:29:02,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:02,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:04,057 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 22:29:04,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:04,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768352138] [2024-06-27 22:29:04,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768352138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:04,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:04,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:29:04,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907906673] [2024-06-27 22:29:04,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:04,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:29:04,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:04,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:29:04,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:29:04,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:29:04,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 229 transitions, 3121 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 22:29:04,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:04,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:29:04,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:06,213 INFO L124 PetriNetUnfolderBase]: 8343/12785 cut-off events. [2024-06-27 22:29:06,214 INFO L125 PetriNetUnfolderBase]: For 159915/159915 co-relation queries the response was YES. [2024-06-27 22:29:06,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68809 conditions, 12785 events. 8343/12785 cut-off events. For 159915/159915 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 83540 event pairs, 1338 based on Foata normal form. 6/12675 useless extension candidates. Maximal degree in co-relation 68743. Up to 10011 conditions per place. [2024-06-27 22:29:06,316 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 180 selfloop transitions, 114 changer transitions 0/304 dead transitions. [2024-06-27 22:29:06,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 304 transitions, 4215 flow [2024-06-27 22:29:06,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:29:06,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:29:06,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-27 22:29:06,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-27 22:29:06,318 INFO L175 Difference]: Start difference. First operand has 144 places, 229 transitions, 3121 flow. Second operand 9 states and 230 transitions. [2024-06-27 22:29:06,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 304 transitions, 4215 flow [2024-06-27 22:29:06,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 304 transitions, 3880 flow, removed 57 selfloop flow, removed 7 redundant places. [2024-06-27 22:29:06,668 INFO L231 Difference]: Finished difference. Result has 147 places, 244 transitions, 3343 flow [2024-06-27 22:29:06,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2786, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3343, PETRI_PLACES=147, PETRI_TRANSITIONS=244} [2024-06-27 22:29:06,669 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 95 predicate places. [2024-06-27 22:29:06,669 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 244 transitions, 3343 flow [2024-06-27 22:29:06,669 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 22:29:06,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:06,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:06,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:29:06,669 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:06,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:06,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1332946820, now seen corresponding path program 3 times [2024-06-27 22:29:06,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:06,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778273944] [2024-06-27 22:29:06,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:06,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:29:07,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:07,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778273944] [2024-06-27 22:29:07,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778273944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:07,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:07,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:29:07,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031860427] [2024-06-27 22:29:07,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:07,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:29:07,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:07,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:29:07,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:29:07,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:29:07,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 244 transitions, 3343 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 22:29:07,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:07,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:29:07,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:09,334 INFO L124 PetriNetUnfolderBase]: 8340/13887 cut-off events. [2024-06-27 22:29:09,335 INFO L125 PetriNetUnfolderBase]: For 170759/170763 co-relation queries the response was YES. [2024-06-27 22:29:09,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71925 conditions, 13887 events. 8340/13887 cut-off events. For 170759/170763 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 101731 event pairs, 3335 based on Foata normal form. 5/13492 useless extension candidates. Maximal degree in co-relation 71858. Up to 11902 conditions per place. [2024-06-27 22:29:09,462 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 216 selfloop transitions, 40 changer transitions 0/266 dead transitions. [2024-06-27 22:29:09,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 266 transitions, 3968 flow [2024-06-27 22:29:09,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:29:09,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:29:09,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-27 22:29:09,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2024-06-27 22:29:09,463 INFO L175 Difference]: Start difference. First operand has 147 places, 244 transitions, 3343 flow. Second operand 6 states and 141 transitions. [2024-06-27 22:29:09,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 266 transitions, 3968 flow [2024-06-27 22:29:09,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 266 transitions, 3697 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-27 22:29:09,764 INFO L231 Difference]: Finished difference. Result has 148 places, 252 transitions, 3266 flow [2024-06-27 22:29:09,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3072, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3266, PETRI_PLACES=148, PETRI_TRANSITIONS=252} [2024-06-27 22:29:09,764 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 96 predicate places. [2024-06-27 22:29:09,764 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 252 transitions, 3266 flow [2024-06-27 22:29:09,765 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 22:29:09,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:09,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:09,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:29:09,765 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:09,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:09,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1327556168, now seen corresponding path program 1 times [2024-06-27 22:29:09,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:09,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9395032] [2024-06-27 22:29:09,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:09,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:10,598 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 22:29:10,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:10,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9395032] [2024-06-27 22:29:10,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9395032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:10,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:10,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:29:10,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696426367] [2024-06-27 22:29:10,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:10,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:29:10,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:10,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:29:10,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:29:10,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 22:29:10,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 252 transitions, 3266 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 22:29:10,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:10,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 22:29:10,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:12,432 INFO L124 PetriNetUnfolderBase]: 8274/13785 cut-off events. [2024-06-27 22:29:12,433 INFO L125 PetriNetUnfolderBase]: For 181149/181253 co-relation queries the response was YES. [2024-06-27 22:29:12,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70785 conditions, 13785 events. 8274/13785 cut-off events. For 181149/181253 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 101382 event pairs, 3471 based on Foata normal form. 2/13294 useless extension candidates. Maximal degree in co-relation 70716. Up to 11783 conditions per place. [2024-06-27 22:29:12,565 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 245 selfloop transitions, 16 changer transitions 0/277 dead transitions. [2024-06-27 22:29:12,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 277 transitions, 3923 flow [2024-06-27 22:29:12,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:29:12,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:29:12,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-27 22:29:12,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289855072463768 [2024-06-27 22:29:12,566 INFO L175 Difference]: Start difference. First operand has 148 places, 252 transitions, 3266 flow. Second operand 6 states and 146 transitions. [2024-06-27 22:29:12,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 277 transitions, 3923 flow [2024-06-27 22:29:12,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 277 transitions, 3856 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-27 22:29:12,958 INFO L231 Difference]: Finished difference. Result has 153 places, 260 transitions, 3344 flow [2024-06-27 22:29:12,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3199, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3344, PETRI_PLACES=153, PETRI_TRANSITIONS=260} [2024-06-27 22:29:12,959 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 101 predicate places. [2024-06-27 22:29:12,959 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 260 transitions, 3344 flow [2024-06-27 22:29:12,959 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 22:29:12,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:12,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:12,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:29:12,960 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:12,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:12,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1206613901, now seen corresponding path program 1 times [2024-06-27 22:29:12,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:12,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714338917] [2024-06-27 22:29:12,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:12,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:13,996 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 22:29:13,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:13,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714338917] [2024-06-27 22:29:13,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714338917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:13,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:13,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:29:13,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182075552] [2024-06-27 22:29:13,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:13,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:29:13,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:13,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:29:13,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:29:14,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 22:29:14,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 260 transitions, 3344 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:14,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:14,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 22:29:14,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:15,789 INFO L124 PetriNetUnfolderBase]: 7998/13453 cut-off events. [2024-06-27 22:29:15,790 INFO L125 PetriNetUnfolderBase]: For 177505/177555 co-relation queries the response was YES. [2024-06-27 22:29:15,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69612 conditions, 13453 events. 7998/13453 cut-off events. For 177505/177555 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 100184 event pairs, 3180 based on Foata normal form. 5/12969 useless extension candidates. Maximal degree in co-relation 69539. Up to 11366 conditions per place. [2024-06-27 22:29:15,925 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 239 selfloop transitions, 34 changer transitions 2/289 dead transitions. [2024-06-27 22:29:15,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 289 transitions, 4060 flow [2024-06-27 22:29:15,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:29:15,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:29:15,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-27 22:29:15,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5615942028985508 [2024-06-27 22:29:15,927 INFO L175 Difference]: Start difference. First operand has 153 places, 260 transitions, 3344 flow. Second operand 6 states and 155 transitions. [2024-06-27 22:29:15,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 289 transitions, 4060 flow [2024-06-27 22:29:16,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 289 transitions, 4012 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-27 22:29:16,268 INFO L231 Difference]: Finished difference. Result has 157 places, 266 transitions, 3494 flow [2024-06-27 22:29:16,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3296, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3494, PETRI_PLACES=157, PETRI_TRANSITIONS=266} [2024-06-27 22:29:16,269 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 105 predicate places. [2024-06-27 22:29:16,269 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 266 transitions, 3494 flow [2024-06-27 22:29:16,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:16,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:16,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:16,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:29:16,270 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:16,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:16,270 INFO L85 PathProgramCache]: Analyzing trace with hash -518349218, now seen corresponding path program 2 times [2024-06-27 22:29:16,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:16,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233280268] [2024-06-27 22:29:16,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:16,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:17,090 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 22:29:17,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:17,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233280268] [2024-06-27 22:29:17,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233280268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:17,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:17,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:29:17,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558478903] [2024-06-27 22:29:17,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:17,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:29:17,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:17,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:29:17,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:29:17,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 22:29:17,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 266 transitions, 3494 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 22:29:17,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:17,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 22:29:17,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:19,011 INFO L124 PetriNetUnfolderBase]: 8290/13811 cut-off events. [2024-06-27 22:29:19,012 INFO L125 PetriNetUnfolderBase]: For 200864/200997 co-relation queries the response was YES. [2024-06-27 22:29:19,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73506 conditions, 13811 events. 8290/13811 cut-off events. For 200864/200997 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 101710 event pairs, 3478 based on Foata normal form. 12/13330 useless extension candidates. Maximal degree in co-relation 73432. Up to 11784 conditions per place. [2024-06-27 22:29:19,125 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 241 selfloop transitions, 26 changer transitions 0/284 dead transitions. [2024-06-27 22:29:19,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 284 transitions, 4116 flow [2024-06-27 22:29:19,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:29:19,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:29:19,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-27 22:29:19,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253623188405797 [2024-06-27 22:29:19,127 INFO L175 Difference]: Start difference. First operand has 157 places, 266 transitions, 3494 flow. Second operand 6 states and 145 transitions. [2024-06-27 22:29:19,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 284 transitions, 4116 flow [2024-06-27 22:29:19,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 284 transitions, 4031 flow, removed 32 selfloop flow, removed 2 redundant places. [2024-06-27 22:29:19,451 INFO L231 Difference]: Finished difference. Result has 161 places, 270 transitions, 3525 flow [2024-06-27 22:29:19,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3409, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3525, PETRI_PLACES=161, PETRI_TRANSITIONS=270} [2024-06-27 22:29:19,452 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 109 predicate places. [2024-06-27 22:29:19,452 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 270 transitions, 3525 flow [2024-06-27 22:29:19,452 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 22:29:19,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:19,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:19,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:29:19,452 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:19,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:19,453 INFO L85 PathProgramCache]: Analyzing trace with hash -518340290, now seen corresponding path program 1 times [2024-06-27 22:29:19,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:19,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804356701] [2024-06-27 22:29:19,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:19,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:20,842 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 22:29:20,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:20,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804356701] [2024-06-27 22:29:20,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804356701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:20,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:20,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:29:20,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112663165] [2024-06-27 22:29:20,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:20,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:29:20,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:20,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:29:20,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:29:20,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:29:20,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 270 transitions, 3525 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:20,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:20,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:29:20,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:23,179 INFO L124 PetriNetUnfolderBase]: 8407/14018 cut-off events. [2024-06-27 22:29:23,180 INFO L125 PetriNetUnfolderBase]: For 197563/197563 co-relation queries the response was YES. [2024-06-27 22:29:23,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74655 conditions, 14018 events. 8407/14018 cut-off events. For 197563/197563 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 103023 event pairs, 3597 based on Foata normal form. 1/13593 useless extension candidates. Maximal degree in co-relation 74578. Up to 12018 conditions per place. [2024-06-27 22:29:23,333 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 263 selfloop transitions, 23 changer transitions 2/298 dead transitions. [2024-06-27 22:29:23,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 298 transitions, 4257 flow [2024-06-27 22:29:23,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:29:23,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:29:23,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-27 22:29:23,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4906832298136646 [2024-06-27 22:29:23,334 INFO L175 Difference]: Start difference. First operand has 161 places, 270 transitions, 3525 flow. Second operand 7 states and 158 transitions. [2024-06-27 22:29:23,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 298 transitions, 4257 flow [2024-06-27 22:29:23,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 298 transitions, 4173 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-27 22:29:23,730 INFO L231 Difference]: Finished difference. Result has 165 places, 276 transitions, 3594 flow [2024-06-27 22:29:23,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3441, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3594, PETRI_PLACES=165, PETRI_TRANSITIONS=276} [2024-06-27 22:29:23,731 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 113 predicate places. [2024-06-27 22:29:23,731 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 276 transitions, 3594 flow [2024-06-27 22:29:23,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:23,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:23,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:23,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:29:23,732 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:23,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:23,732 INFO L85 PathProgramCache]: Analyzing trace with hash 88682585, now seen corresponding path program 1 times [2024-06-27 22:29:23,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:23,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304920899] [2024-06-27 22:29:23,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:23,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:23,814 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 22:29:23,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:23,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304920899] [2024-06-27 22:29:23,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304920899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:23,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:23,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:29:23,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550850969] [2024-06-27 22:29:23,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:23,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:29:23,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:23,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:29:23,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:29:23,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 46 [2024-06-27 22:29:23,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 276 transitions, 3594 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 22:29:23,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:23,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 46 [2024-06-27 22:29:23,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:24,813 INFO L124 PetriNetUnfolderBase]: 4086/7497 cut-off events. [2024-06-27 22:29:24,814 INFO L125 PetriNetUnfolderBase]: For 160078/163753 co-relation queries the response was YES. [2024-06-27 22:29:24,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39803 conditions, 7497 events. 4086/7497 cut-off events. For 160078/163753 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 59511 event pairs, 1227 based on Foata normal form. 1671/8241 useless extension candidates. Maximal degree in co-relation 39725. Up to 3005 conditions per place. [2024-06-27 22:29:24,897 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 65 selfloop transitions, 66 changer transitions 0/251 dead transitions. [2024-06-27 22:29:24,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 251 transitions, 3389 flow [2024-06-27 22:29:24,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:29:24,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:29:24,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-06-27 22:29:24,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7463768115942029 [2024-06-27 22:29:24,899 INFO L175 Difference]: Start difference. First operand has 165 places, 276 transitions, 3594 flow. Second operand 3 states and 103 transitions. [2024-06-27 22:29:24,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 251 transitions, 3389 flow [2024-06-27 22:29:25,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 251 transitions, 3315 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-27 22:29:25,143 INFO L231 Difference]: Finished difference. Result has 155 places, 243 transitions, 3141 flow [2024-06-27 22:29:25,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3009, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3141, PETRI_PLACES=155, PETRI_TRANSITIONS=243} [2024-06-27 22:29:25,143 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 103 predicate places. [2024-06-27 22:29:25,143 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 243 transitions, 3141 flow [2024-06-27 22:29:25,144 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 22:29:25,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:25,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:25,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:29:25,144 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 22:29:25,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:25,145 INFO L85 PathProgramCache]: Analyzing trace with hash -619115793, now seen corresponding path program 1 times [2024-06-27 22:29:25,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:25,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475867973] [2024-06-27 22:29:25,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:25,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:26,647 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 22:29:26,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:26,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475867973] [2024-06-27 22:29:26,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475867973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:26,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:26,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:29:26,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139841494] [2024-06-27 22:29:26,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:26,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:29:26,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:26,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:29:26,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:29:26,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:29:26,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 243 transitions, 3141 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:26,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:26,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:29:26,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:28,810 INFO L124 PetriNetUnfolderBase]: 7430/12444 cut-off events. [2024-06-27 22:29:28,810 INFO L125 PetriNetUnfolderBase]: For 162592/162596 co-relation queries the response was YES. [2024-06-27 22:29:28,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65830 conditions, 12444 events. 7430/12444 cut-off events. For 162592/162596 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 90464 event pairs, 2091 based on Foata normal form. 19/12161 useless extension candidates. Maximal degree in co-relation 65755. Up to 8899 conditions per place. [2024-06-27 22:29:28,900 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 228 selfloop transitions, 91 changer transitions 7/336 dead transitions. [2024-06-27 22:29:28,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 336 transitions, 4453 flow [2024-06-27 22:29:28,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:29:28,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:29:28,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-06-27 22:29:28,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5821256038647343 [2024-06-27 22:29:28,902 INFO L175 Difference]: Start difference. First operand has 155 places, 243 transitions, 3141 flow. Second operand 9 states and 241 transitions. [2024-06-27 22:29:28,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 336 transitions, 4453 flow [2024-06-27 22:29:29,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 336 transitions, 4303 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:29:29,194 INFO L231 Difference]: Finished difference. Result has 164 places, 262 transitions, 3564 flow [2024-06-27 22:29:29,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3009, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3564, PETRI_PLACES=164, PETRI_TRANSITIONS=262} [2024-06-27 22:29:29,195 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 112 predicate places. [2024-06-27 22:29:29,195 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 262 transitions, 3564 flow [2024-06-27 22:29:29,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:29,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:29,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:29,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:29:29,197 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:29,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:29,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1166630728, now seen corresponding path program 1 times [2024-06-27 22:29:29,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:29,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699736244] [2024-06-27 22:29:29,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:29,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:30,007 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 22:29:30,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:30,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699736244] [2024-06-27 22:29:30,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699736244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:30,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:30,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:29:30,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949604849] [2024-06-27 22:29:30,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:30,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:29:30,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:30,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:29:30,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:29:30,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:29:30,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 262 transitions, 3564 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 22:29:30,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:30,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:29:30,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:31,717 INFO L124 PetriNetUnfolderBase]: 6613/11677 cut-off events. [2024-06-27 22:29:31,718 INFO L125 PetriNetUnfolderBase]: For 152914/152922 co-relation queries the response was YES. [2024-06-27 22:29:31,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61414 conditions, 11677 events. 6613/11677 cut-off events. For 152914/152922 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 89522 event pairs, 2058 based on Foata normal form. 8/11292 useless extension candidates. Maximal degree in co-relation 61335. Up to 9157 conditions per place. [2024-06-27 22:29:31,839 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 270 selfloop transitions, 112 changer transitions 0/392 dead transitions. [2024-06-27 22:29:31,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 392 transitions, 6044 flow [2024-06-27 22:29:31,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:29:31,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:29:31,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 22:29:31,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5489130434782609 [2024-06-27 22:29:31,841 INFO L175 Difference]: Start difference. First operand has 164 places, 262 transitions, 3564 flow. Second operand 8 states and 202 transitions. [2024-06-27 22:29:31,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 392 transitions, 6044 flow [2024-06-27 22:29:32,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 392 transitions, 5807 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-27 22:29:32,180 INFO L231 Difference]: Finished difference. Result has 170 places, 353 transitions, 5366 flow [2024-06-27 22:29:32,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3419, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5366, PETRI_PLACES=170, PETRI_TRANSITIONS=353} [2024-06-27 22:29:32,180 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 118 predicate places. [2024-06-27 22:29:32,181 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 353 transitions, 5366 flow [2024-06-27 22:29:32,181 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 22:29:32,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:32,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:32,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:29:32,181 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:32,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:32,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1983151256, now seen corresponding path program 2 times [2024-06-27 22:29:32,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:32,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709461973] [2024-06-27 22:29:32,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:32,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:33,001 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 22:29:33,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:33,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709461973] [2024-06-27 22:29:33,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709461973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:33,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:33,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:29:33,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110837043] [2024-06-27 22:29:33,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:33,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:29:33,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:33,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:29:33,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:29:33,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:29:33,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 353 transitions, 5366 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 22:29:33,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:33,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:29:33,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:34,840 INFO L124 PetriNetUnfolderBase]: 6687/11755 cut-off events. [2024-06-27 22:29:34,840 INFO L125 PetriNetUnfolderBase]: For 164799/164807 co-relation queries the response was YES. [2024-06-27 22:29:34,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64498 conditions, 11755 events. 6687/11755 cut-off events. For 164799/164807 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 89677 event pairs, 2087 based on Foata normal form. 10/11377 useless extension candidates. Maximal degree in co-relation 64415. Up to 9511 conditions per place. [2024-06-27 22:29:34,964 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 334 selfloop transitions, 82 changer transitions 0/426 dead transitions. [2024-06-27 22:29:34,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 426 transitions, 6991 flow [2024-06-27 22:29:34,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:29:34,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:29:34,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 22:29:34,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-27 22:29:34,966 INFO L175 Difference]: Start difference. First operand has 170 places, 353 transitions, 5366 flow. Second operand 8 states and 196 transitions. [2024-06-27 22:29:34,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 426 transitions, 6991 flow [2024-06-27 22:29:35,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 426 transitions, 6761 flow, removed 114 selfloop flow, removed 1 redundant places. [2024-06-27 22:29:35,377 INFO L231 Difference]: Finished difference. Result has 180 places, 394 transitions, 6142 flow [2024-06-27 22:29:35,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5260, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6142, PETRI_PLACES=180, PETRI_TRANSITIONS=394} [2024-06-27 22:29:35,379 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 128 predicate places. [2024-06-27 22:29:35,379 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 394 transitions, 6142 flow [2024-06-27 22:29:35,379 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 22:29:35,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:35,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:35,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:29:35,380 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:35,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:35,380 INFO L85 PathProgramCache]: Analyzing trace with hash -126770650, now seen corresponding path program 3 times [2024-06-27 22:29:35,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:35,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672070090] [2024-06-27 22:29:35,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:35,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:36,315 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 22:29:36,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:36,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672070090] [2024-06-27 22:29:36,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672070090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:36,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:36,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:29:36,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377912214] [2024-06-27 22:29:36,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:36,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:29:36,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:36,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:29:36,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:29:36,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:29:36,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 394 transitions, 6142 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 22:29:36,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:36,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:29:36,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:38,261 INFO L124 PetriNetUnfolderBase]: 6743/11802 cut-off events. [2024-06-27 22:29:38,261 INFO L125 PetriNetUnfolderBase]: For 177372/177376 co-relation queries the response was YES. [2024-06-27 22:29:38,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67152 conditions, 11802 events. 6743/11802 cut-off events. For 177372/177376 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 89493 event pairs, 2087 based on Foata normal form. 6/11423 useless extension candidates. Maximal degree in co-relation 67063. Up to 9475 conditions per place. [2024-06-27 22:29:38,394 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 337 selfloop transitions, 90 changer transitions 0/437 dead transitions. [2024-06-27 22:29:38,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 437 transitions, 7357 flow [2024-06-27 22:29:38,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:29:38,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:29:38,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 22:29:38,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271739130434783 [2024-06-27 22:29:38,395 INFO L175 Difference]: Start difference. First operand has 180 places, 394 transitions, 6142 flow. Second operand 8 states and 194 transitions. [2024-06-27 22:29:38,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 437 transitions, 7357 flow [2024-06-27 22:29:38,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 437 transitions, 7257 flow, removed 49 selfloop flow, removed 1 redundant places. [2024-06-27 22:29:38,803 INFO L231 Difference]: Finished difference. Result has 188 places, 407 transitions, 6485 flow [2024-06-27 22:29:38,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6042, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6485, PETRI_PLACES=188, PETRI_TRANSITIONS=407} [2024-06-27 22:29:38,803 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 136 predicate places. [2024-06-27 22:29:38,803 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 407 transitions, 6485 flow [2024-06-27 22:29:38,804 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 22:29:38,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:38,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:38,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:29:38,804 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 22:29:38,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:38,804 INFO L85 PathProgramCache]: Analyzing trace with hash -866096711, now seen corresponding path program 1 times [2024-06-27 22:29:38,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:38,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924883537] [2024-06-27 22:29:38,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:38,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:40,079 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 22:29:40,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:40,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924883537] [2024-06-27 22:29:40,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924883537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:40,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:40,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:29:40,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035102466] [2024-06-27 22:29:40,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:40,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:29:40,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:40,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:29:40,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:29:40,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:29:40,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 407 transitions, 6485 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:40,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:40,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:29:40,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:42,452 INFO L124 PetriNetUnfolderBase]: 6994/12227 cut-off events. [2024-06-27 22:29:42,453 INFO L125 PetriNetUnfolderBase]: For 203406/203410 co-relation queries the response was YES. [2024-06-27 22:29:42,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71213 conditions, 12227 events. 6994/12227 cut-off events. For 203406/203410 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 93342 event pairs, 1841 based on Foata normal form. 19/11858 useless extension candidates. Maximal degree in co-relation 71120. Up to 8301 conditions per place. [2024-06-27 22:29:42,622 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 286 selfloop transitions, 182 changer transitions 0/478 dead transitions. [2024-06-27 22:29:42,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 478 transitions, 7952 flow [2024-06-27 22:29:42,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:29:42,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:29:42,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-27 22:29:42,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5410628019323671 [2024-06-27 22:29:42,631 INFO L175 Difference]: Start difference. First operand has 188 places, 407 transitions, 6485 flow. Second operand 9 states and 224 transitions. [2024-06-27 22:29:42,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 478 transitions, 7952 flow [2024-06-27 22:29:43,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 478 transitions, 7762 flow, removed 52 selfloop flow, removed 4 redundant places. [2024-06-27 22:29:43,205 INFO L231 Difference]: Finished difference. Result has 193 places, 410 transitions, 6745 flow [2024-06-27 22:29:43,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6311, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6745, PETRI_PLACES=193, PETRI_TRANSITIONS=410} [2024-06-27 22:29:43,206 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 141 predicate places. [2024-06-27 22:29:43,206 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 410 transitions, 6745 flow [2024-06-27 22:29:43,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:43,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:43,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:43,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:29:43,207 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:43,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:43,207 INFO L85 PathProgramCache]: Analyzing trace with hash -255258513, now seen corresponding path program 2 times [2024-06-27 22:29:43,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:43,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824831724] [2024-06-27 22:29:43,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:43,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:44,524 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 22:29:44,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:44,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824831724] [2024-06-27 22:29:44,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824831724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:44,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:44,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:29:44,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108477822] [2024-06-27 22:29:44,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:44,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:29:44,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:44,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:29:44,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:29:44,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:29:44,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 410 transitions, 6745 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:44,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:44,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:29:44,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:47,019 INFO L124 PetriNetUnfolderBase]: 7243/12716 cut-off events. [2024-06-27 22:29:47,020 INFO L125 PetriNetUnfolderBase]: For 217723/217727 co-relation queries the response was YES. [2024-06-27 22:29:47,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74618 conditions, 12716 events. 7243/12716 cut-off events. For 217723/217727 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 98129 event pairs, 1980 based on Foata normal form. 19/12332 useless extension candidates. Maximal degree in co-relation 74523. Up to 6449 conditions per place. [2024-06-27 22:29:47,190 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 286 selfloop transitions, 186 changer transitions 0/482 dead transitions. [2024-06-27 22:29:47,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 482 transitions, 8259 flow [2024-06-27 22:29:47,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:29:47,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:29:47,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-27 22:29:47,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5458937198067633 [2024-06-27 22:29:47,192 INFO L175 Difference]: Start difference. First operand has 193 places, 410 transitions, 6745 flow. Second operand 9 states and 226 transitions. [2024-06-27 22:29:47,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 482 transitions, 8259 flow [2024-06-27 22:29:47,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 482 transitions, 8001 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 22:29:47,783 INFO L231 Difference]: Finished difference. Result has 198 places, 414 transitions, 7034 flow [2024-06-27 22:29:47,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6489, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7034, PETRI_PLACES=198, PETRI_TRANSITIONS=414} [2024-06-27 22:29:47,784 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 146 predicate places. [2024-06-27 22:29:47,784 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 414 transitions, 7034 flow [2024-06-27 22:29:47,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:47,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:47,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:47,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:29:47,785 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 22:29:47,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:47,785 INFO L85 PathProgramCache]: Analyzing trace with hash -881908327, now seen corresponding path program 2 times [2024-06-27 22:29:47,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:47,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720749690] [2024-06-27 22:29:47,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:47,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:49,274 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 22:29:49,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:49,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720749690] [2024-06-27 22:29:49,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720749690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:49,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:49,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:29:49,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826639877] [2024-06-27 22:29:49,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:49,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:29:49,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:49,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:29:49,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:29:49,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:29:49,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 414 transitions, 7034 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:49,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:49,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:29:49,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:51,966 INFO L124 PetriNetUnfolderBase]: 7900/14038 cut-off events. [2024-06-27 22:29:51,967 INFO L125 PetriNetUnfolderBase]: For 252292/252296 co-relation queries the response was YES. [2024-06-27 22:29:52,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83205 conditions, 14038 events. 7900/14038 cut-off events. For 252292/252296 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 112016 event pairs, 2258 based on Foata normal form. 25/13591 useless extension candidates. Maximal degree in co-relation 83108. Up to 8940 conditions per place. [2024-06-27 22:29:52,189 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 299 selfloop transitions, 195 changer transitions 0/504 dead transitions. [2024-06-27 22:29:52,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 504 transitions, 8965 flow [2024-06-27 22:29:52,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:29:52,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:29:52,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-27 22:29:52,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5362318840579711 [2024-06-27 22:29:52,191 INFO L175 Difference]: Start difference. First operand has 198 places, 414 transitions, 7034 flow. Second operand 9 states and 222 transitions. [2024-06-27 22:29:52,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 504 transitions, 8965 flow [2024-06-27 22:29:52,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 504 transitions, 8614 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 22:29:52,967 INFO L231 Difference]: Finished difference. Result has 203 places, 440 transitions, 7792 flow [2024-06-27 22:29:52,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6709, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7792, PETRI_PLACES=203, PETRI_TRANSITIONS=440} [2024-06-27 22:29:52,968 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 151 predicate places. [2024-06-27 22:29:52,968 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 440 transitions, 7792 flow [2024-06-27 22:29:52,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:29:52,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:52,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:52,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:29:52,969 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:52,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:52,969 INFO L85 PathProgramCache]: Analyzing trace with hash 90620552, now seen corresponding path program 4 times [2024-06-27 22:29:52,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:52,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489606529] [2024-06-27 22:29:52,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:52,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:53,849 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 22:29:53,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:53,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489606529] [2024-06-27 22:29:53,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489606529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:53,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:53,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:29:53,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147852419] [2024-06-27 22:29:53,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:53,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:29:53,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:53,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:29:53,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:29:53,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:29:53,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 440 transitions, 7792 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 22:29:53,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:53,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:29:53,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:29:56,263 INFO L124 PetriNetUnfolderBase]: 7972/14157 cut-off events. [2024-06-27 22:29:56,263 INFO L125 PetriNetUnfolderBase]: For 257998/258002 co-relation queries the response was YES. [2024-06-27 22:29:56,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84739 conditions, 14157 events. 7972/14157 cut-off events. For 257998/258002 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 113056 event pairs, 2534 based on Foata normal form. 6/13694 useless extension candidates. Maximal degree in co-relation 84639. Up to 11454 conditions per place. [2024-06-27 22:29:56,471 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 386 selfloop transitions, 93 changer transitions 0/489 dead transitions. [2024-06-27 22:29:56,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 489 transitions, 9123 flow [2024-06-27 22:29:56,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:29:56,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:29:56,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 22:29:56,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054347826086957 [2024-06-27 22:29:56,473 INFO L175 Difference]: Start difference. First operand has 203 places, 440 transitions, 7792 flow. Second operand 8 states and 186 transitions. [2024-06-27 22:29:56,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 489 transitions, 9123 flow [2024-06-27 22:29:57,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 489 transitions, 8863 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-27 22:29:57,316 INFO L231 Difference]: Finished difference. Result has 206 places, 463 transitions, 8056 flow [2024-06-27 22:29:57,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7532, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8056, PETRI_PLACES=206, PETRI_TRANSITIONS=463} [2024-06-27 22:29:57,320 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 154 predicate places. [2024-06-27 22:29:57,320 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 463 transitions, 8056 flow [2024-06-27 22:29:57,320 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 22:29:57,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:29:57,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:29:57,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:29:57,321 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:29:57,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:29:57,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1618117100, now seen corresponding path program 5 times [2024-06-27 22:29:57,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:29:57,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833234174] [2024-06-27 22:29:57,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:29:57,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:29:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:29:58,270 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 22:29:58,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:29:58,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833234174] [2024-06-27 22:29:58,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833234174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:29:58,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:29:58,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:29:58,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727095249] [2024-06-27 22:29:58,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:29:58,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:29:58,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:29:58,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:29:58,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:29:58,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:29:58,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 463 transitions, 8056 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 22:29:58,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:29:58,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:29:58,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:00,747 INFO L124 PetriNetUnfolderBase]: 8140/14403 cut-off events. [2024-06-27 22:30:00,748 INFO L125 PetriNetUnfolderBase]: For 271725/271729 co-relation queries the response was YES. [2024-06-27 22:30:00,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86895 conditions, 14403 events. 8140/14403 cut-off events. For 271725/271729 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 114701 event pairs, 2441 based on Foata normal form. 4/13936 useless extension candidates. Maximal degree in co-relation 86795. Up to 11167 conditions per place. [2024-06-27 22:30:00,956 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 339 selfloop transitions, 165 changer transitions 0/514 dead transitions. [2024-06-27 22:30:00,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 514 transitions, 9607 flow [2024-06-27 22:30:00,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:30:00,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:30:00,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 22:30:00,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-27 22:30:00,958 INFO L175 Difference]: Start difference. First operand has 206 places, 463 transitions, 8056 flow. Second operand 7 states and 175 transitions. [2024-06-27 22:30:00,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 514 transitions, 9607 flow [2024-06-27 22:30:01,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 514 transitions, 9456 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-06-27 22:30:01,984 INFO L231 Difference]: Finished difference. Result has 211 places, 492 transitions, 8761 flow [2024-06-27 22:30:01,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7905, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8761, PETRI_PLACES=211, PETRI_TRANSITIONS=492} [2024-06-27 22:30:01,985 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 159 predicate places. [2024-06-27 22:30:01,985 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 492 transitions, 8761 flow [2024-06-27 22:30:01,985 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 22:30:01,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:01,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:01,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:30:01,986 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 22:30:01,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:01,986 INFO L85 PathProgramCache]: Analyzing trace with hash 335158203, now seen corresponding path program 3 times [2024-06-27 22:30:01,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:01,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980951092] [2024-06-27 22:30:01,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:01,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:03,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:30:03,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:03,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980951092] [2024-06-27 22:30:03,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980951092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:03,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:03,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:30:03,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831500838] [2024-06-27 22:30:03,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:03,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:30:03,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:03,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:30:03,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:30:03,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:30:03,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 492 transitions, 8761 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:03,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:03,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:30:03,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:06,446 INFO L124 PetriNetUnfolderBase]: 8094/14325 cut-off events. [2024-06-27 22:30:06,446 INFO L125 PetriNetUnfolderBase]: For 297072/297076 co-relation queries the response was YES. [2024-06-27 22:30:06,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88751 conditions, 14325 events. 8094/14325 cut-off events. For 297072/297076 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 113997 event pairs, 2280 based on Foata normal form. 28/13883 useless extension candidates. Maximal degree in co-relation 88649. Up to 10349 conditions per place. [2024-06-27 22:30:06,604 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 357 selfloop transitions, 189 changer transitions 0/556 dead transitions. [2024-06-27 22:30:06,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 556 transitions, 10345 flow [2024-06-27 22:30:06,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:30:06,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:30:06,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-27 22:30:06,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289855072463768 [2024-06-27 22:30:06,610 INFO L175 Difference]: Start difference. First operand has 211 places, 492 transitions, 8761 flow. Second operand 9 states and 219 transitions. [2024-06-27 22:30:06,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 556 transitions, 10345 flow [2024-06-27 22:30:07,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 556 transitions, 10204 flow, removed 68 selfloop flow, removed 1 redundant places. [2024-06-27 22:30:07,386 INFO L231 Difference]: Finished difference. Result has 220 places, 499 transitions, 9174 flow [2024-06-27 22:30:07,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8620, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9174, PETRI_PLACES=220, PETRI_TRANSITIONS=499} [2024-06-27 22:30:07,387 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 168 predicate places. [2024-06-27 22:30:07,387 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 499 transitions, 9174 flow [2024-06-27 22:30:07,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:07,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:07,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:07,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:30:07,388 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:30:07,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:07,388 INFO L85 PathProgramCache]: Analyzing trace with hash 344354973, now seen corresponding path program 4 times [2024-06-27 22:30:07,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:07,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513652271] [2024-06-27 22:30:07,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:07,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:08,848 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 22:30:08,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:08,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513652271] [2024-06-27 22:30:08,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513652271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:08,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:08,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:30:08,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227929737] [2024-06-27 22:30:08,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:08,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:30:08,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:08,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:30:08,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:30:08,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:30:08,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 499 transitions, 9174 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:08,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:08,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:30:08,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:11,690 INFO L124 PetriNetUnfolderBase]: 8061/14242 cut-off events. [2024-06-27 22:30:11,690 INFO L125 PetriNetUnfolderBase]: For 295909/295913 co-relation queries the response was YES. [2024-06-27 22:30:11,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88877 conditions, 14242 events. 8061/14242 cut-off events. For 295909/295913 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 113118 event pairs, 2103 based on Foata normal form. 22/13808 useless extension candidates. Maximal degree in co-relation 88771. Up to 7461 conditions per place. [2024-06-27 22:30:11,870 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 329 selfloop transitions, 213 changer transitions 0/552 dead transitions. [2024-06-27 22:30:11,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 552 transitions, 10506 flow [2024-06-27 22:30:11,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:30:11,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:30:11,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-27 22:30:11,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5265700483091788 [2024-06-27 22:30:11,871 INFO L175 Difference]: Start difference. First operand has 220 places, 499 transitions, 9174 flow. Second operand 9 states and 218 transitions. [2024-06-27 22:30:11,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 552 transitions, 10506 flow [2024-06-27 22:30:12,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 552 transitions, 10196 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-27 22:30:12,750 INFO L231 Difference]: Finished difference. Result has 224 places, 498 transitions, 9249 flow [2024-06-27 22:30:12,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8818, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9249, PETRI_PLACES=224, PETRI_TRANSITIONS=498} [2024-06-27 22:30:12,751 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 172 predicate places. [2024-06-27 22:30:12,751 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 498 transitions, 9249 flow [2024-06-27 22:30:12,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:12,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:12,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:12,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:30:12,751 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:30:12,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:12,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1111306167, now seen corresponding path program 2 times [2024-06-27 22:30:12,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:12,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065839777] [2024-06-27 22:30:12,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:12,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:13,850 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 22:30:13,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:13,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065839777] [2024-06-27 22:30:13,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065839777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:13,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:13,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:30:13,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894894498] [2024-06-27 22:30:13,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:13,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:30:13,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:13,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:30:13,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:30:13,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:30:13,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 498 transitions, 9249 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 22:30:13,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:13,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:30:13,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:16,603 INFO L124 PetriNetUnfolderBase]: 8073/14330 cut-off events. [2024-06-27 22:30:16,603 INFO L125 PetriNetUnfolderBase]: For 300445/300445 co-relation queries the response was YES. [2024-06-27 22:30:16,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89416 conditions, 14330 events. 8073/14330 cut-off events. For 300445/300445 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 114624 event pairs, 3278 based on Foata normal form. 1/13863 useless extension candidates. Maximal degree in co-relation 89309. Up to 11871 conditions per place. [2024-06-27 22:30:16,790 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 483 selfloop transitions, 23 changer transitions 0/516 dead transitions. [2024-06-27 22:30:16,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 516 transitions, 10405 flow [2024-06-27 22:30:16,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:30:16,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:30:16,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-27 22:30:16,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658385093167702 [2024-06-27 22:30:16,794 INFO L175 Difference]: Start difference. First operand has 224 places, 498 transitions, 9249 flow. Second operand 7 states and 150 transitions. [2024-06-27 22:30:16,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 516 transitions, 10405 flow [2024-06-27 22:30:17,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 516 transitions, 9816 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 22:30:17,606 INFO L231 Difference]: Finished difference. Result has 223 places, 502 transitions, 8822 flow [2024-06-27 22:30:17,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8660, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8822, PETRI_PLACES=223, PETRI_TRANSITIONS=502} [2024-06-27 22:30:17,606 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 171 predicate places. [2024-06-27 22:30:17,606 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 502 transitions, 8822 flow [2024-06-27 22:30:17,607 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 22:30:17,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:17,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:17,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:30:17,607 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:30:17,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:17,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1110860697, now seen corresponding path program 3 times [2024-06-27 22:30:17,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:17,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775709815] [2024-06-27 22:30:17,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:17,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:18,528 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 22:30:18,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:18,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775709815] [2024-06-27 22:30:18,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775709815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:18,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:18,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:30:18,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098978321] [2024-06-27 22:30:18,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:18,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:30:18,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:18,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:30:18,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:30:18,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:30:18,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 502 transitions, 8822 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:18,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:18,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:30:18,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:20,787 INFO L124 PetriNetUnfolderBase]: 7595/13720 cut-off events. [2024-06-27 22:30:20,787 INFO L125 PetriNetUnfolderBase]: For 284234/284270 co-relation queries the response was YES. [2024-06-27 22:30:20,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82430 conditions, 13720 events. 7595/13720 cut-off events. For 284234/284270 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 112105 event pairs, 2784 based on Foata normal form. 12/13187 useless extension candidates. Maximal degree in co-relation 82324. Up to 11071 conditions per place. [2024-06-27 22:30:21,000 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 463 selfloop transitions, 49 changer transitions 0/531 dead transitions. [2024-06-27 22:30:21,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 531 transitions, 10198 flow [2024-06-27 22:30:21,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:30:21,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:30:21,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-27 22:30:21,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5579710144927537 [2024-06-27 22:30:21,003 INFO L175 Difference]: Start difference. First operand has 223 places, 502 transitions, 8822 flow. Second operand 6 states and 154 transitions. [2024-06-27 22:30:21,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 531 transitions, 10198 flow [2024-06-27 22:30:21,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 531 transitions, 10080 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-27 22:30:21,853 INFO L231 Difference]: Finished difference. Result has 226 places, 512 transitions, 9095 flow [2024-06-27 22:30:21,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8704, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9095, PETRI_PLACES=226, PETRI_TRANSITIONS=512} [2024-06-27 22:30:21,855 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 174 predicate places. [2024-06-27 22:30:21,855 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 512 transitions, 9095 flow [2024-06-27 22:30:21,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:21,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:21,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:21,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:30:21,856 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:30:21,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:21,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1110860294, now seen corresponding path program 6 times [2024-06-27 22:30:21,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:21,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977826217] [2024-06-27 22:30:21,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:21,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:22,942 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 22:30:22,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:22,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977826217] [2024-06-27 22:30:22,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977826217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:22,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:22,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:30:22,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439724892] [2024-06-27 22:30:22,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:22,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:30:22,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:22,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:30:22,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:30:22,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:30:22,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 512 transitions, 9095 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 22:30:22,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:22,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:30:22,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:25,571 INFO L124 PetriNetUnfolderBase]: 8170/14489 cut-off events. [2024-06-27 22:30:25,572 INFO L125 PetriNetUnfolderBase]: For 308526/308530 co-relation queries the response was YES. [2024-06-27 22:30:25,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88554 conditions, 14489 events. 8170/14489 cut-off events. For 308526/308530 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 115884 event pairs, 2387 based on Foata normal form. 4/14014 useless extension candidates. Maximal degree in co-relation 88445. Up to 10976 conditions per place. [2024-06-27 22:30:25,801 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 335 selfloop transitions, 210 changer transitions 0/555 dead transitions. [2024-06-27 22:30:25,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 555 transitions, 10822 flow [2024-06-27 22:30:25,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:30:25,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:30:25,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 22:30:25,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5341614906832298 [2024-06-27 22:30:25,820 INFO L175 Difference]: Start difference. First operand has 226 places, 512 transitions, 9095 flow. Second operand 7 states and 172 transitions. [2024-06-27 22:30:25,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 555 transitions, 10822 flow [2024-06-27 22:30:26,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 555 transitions, 10653 flow, removed 76 selfloop flow, removed 1 redundant places. [2024-06-27 22:30:26,802 INFO L231 Difference]: Finished difference. Result has 234 places, 535 transitions, 9909 flow [2024-06-27 22:30:26,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8926, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9909, PETRI_PLACES=234, PETRI_TRANSITIONS=535} [2024-06-27 22:30:26,804 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 182 predicate places. [2024-06-27 22:30:26,804 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 535 transitions, 9909 flow [2024-06-27 22:30:26,804 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 22:30:26,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:26,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:26,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:30:26,804 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:30:26,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:26,805 INFO L85 PathProgramCache]: Analyzing trace with hash 205656226, now seen corresponding path program 1 times [2024-06-27 22:30:26,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:26,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964626076] [2024-06-27 22:30:26,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:26,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:27,909 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 22:30:27,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:27,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964626076] [2024-06-27 22:30:27,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964626076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:27,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:27,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:30:27,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173157863] [2024-06-27 22:30:27,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:27,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:30:27,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:27,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:30:27,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:30:27,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:30:27,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 535 transitions, 9909 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 22:30:27,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:27,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:30:27,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:30,720 INFO L124 PetriNetUnfolderBase]: 8167/14514 cut-off events. [2024-06-27 22:30:30,720 INFO L125 PetriNetUnfolderBase]: For 335464/335464 co-relation queries the response was YES. [2024-06-27 22:30:30,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92319 conditions, 14514 events. 8167/14514 cut-off events. For 335464/335464 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 116538 event pairs, 3274 based on Foata normal form. 1/14039 useless extension candidates. Maximal degree in co-relation 92205. Up to 11993 conditions per place. [2024-06-27 22:30:30,989 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 531 selfloop transitions, 20 changer transitions 0/561 dead transitions. [2024-06-27 22:30:30,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 561 transitions, 11158 flow [2024-06-27 22:30:30,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:30:30,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:30:30,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2024-06-27 22:30:30,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47282608695652173 [2024-06-27 22:30:30,998 INFO L175 Difference]: Start difference. First operand has 234 places, 535 transitions, 9909 flow. Second operand 8 states and 174 transitions. [2024-06-27 22:30:30,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 561 transitions, 11158 flow [2024-06-27 22:30:32,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 561 transitions, 10840 flow, removed 100 selfloop flow, removed 2 redundant places. [2024-06-27 22:30:32,239 INFO L231 Difference]: Finished difference. Result has 240 places, 538 transitions, 9709 flow [2024-06-27 22:30:32,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9595, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9709, PETRI_PLACES=240, PETRI_TRANSITIONS=538} [2024-06-27 22:30:32,241 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 188 predicate places. [2024-06-27 22:30:32,241 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 538 transitions, 9709 flow [2024-06-27 22:30:32,241 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 22:30:32,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:32,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:32,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:30:32,242 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 22:30:32,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:32,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1103693342, now seen corresponding path program 2 times [2024-06-27 22:30:32,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:32,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270066345] [2024-06-27 22:30:32,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:32,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:33,395 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 22:30:33,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:33,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270066345] [2024-06-27 22:30:33,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270066345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:33,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:33,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:30:33,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514901162] [2024-06-27 22:30:33,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:33,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:30:33,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:33,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:30:33,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:30:33,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:30:33,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 538 transitions, 9709 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 22:30:33,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:33,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:30:33,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:36,296 INFO L124 PetriNetUnfolderBase]: 8179/14534 cut-off events. [2024-06-27 22:30:36,297 INFO L125 PetriNetUnfolderBase]: For 319299/319299 co-relation queries the response was YES. [2024-06-27 22:30:36,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90200 conditions, 14534 events. 8179/14534 cut-off events. For 319299/319299 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 116753 event pairs, 3274 based on Foata normal form. 1/14059 useless extension candidates. Maximal degree in co-relation 90084. Up to 11995 conditions per place. [2024-06-27 22:30:36,506 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 526 selfloop transitions, 27 changer transitions 0/563 dead transitions. [2024-06-27 22:30:36,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 563 transitions, 10986 flow [2024-06-27 22:30:36,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:30:36,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:30:36,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2024-06-27 22:30:36,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4701086956521739 [2024-06-27 22:30:36,508 INFO L175 Difference]: Start difference. First operand has 240 places, 538 transitions, 9709 flow. Second operand 8 states and 173 transitions. [2024-06-27 22:30:36,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 563 transitions, 10986 flow [2024-06-27 22:30:37,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 563 transitions, 10863 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-27 22:30:37,415 INFO L231 Difference]: Finished difference. Result has 242 places, 543 transitions, 9768 flow [2024-06-27 22:30:37,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9586, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9768, PETRI_PLACES=242, PETRI_TRANSITIONS=543} [2024-06-27 22:30:37,416 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 190 predicate places. [2024-06-27 22:30:37,416 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 543 transitions, 9768 flow [2024-06-27 22:30:37,416 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 22:30:37,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:37,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:37,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:30:37,417 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:30:37,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:37,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1111044992, now seen corresponding path program 3 times [2024-06-27 22:30:37,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:37,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42706126] [2024-06-27 22:30:37,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:37,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:38,590 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 22:30:38,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:38,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42706126] [2024-06-27 22:30:38,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42706126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:38,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:38,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:30:38,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612880290] [2024-06-27 22:30:38,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:38,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:30:38,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:38,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:30:38,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:30:38,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:30:38,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 543 transitions, 9768 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 22:30:38,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:38,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:30:38,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:41,452 INFO L124 PetriNetUnfolderBase]: 8176/14530 cut-off events. [2024-06-27 22:30:41,452 INFO L125 PetriNetUnfolderBase]: For 334905/334909 co-relation queries the response was YES. [2024-06-27 22:30:41,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91513 conditions, 14530 events. 8176/14530 cut-off events. For 334905/334909 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 116906 event pairs, 3286 based on Foata normal form. 2/14057 useless extension candidates. Maximal degree in co-relation 91398. Up to 11970 conditions per place. [2024-06-27 22:30:41,665 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 518 selfloop transitions, 37 changer transitions 0/565 dead transitions. [2024-06-27 22:30:41,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 565 transitions, 11047 flow [2024-06-27 22:30:41,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:30:41,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:30:41,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-06-27 22:30:41,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673913043478261 [2024-06-27 22:30:41,666 INFO L175 Difference]: Start difference. First operand has 242 places, 543 transitions, 9768 flow. Second operand 8 states and 172 transitions. [2024-06-27 22:30:41,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 565 transitions, 11047 flow [2024-06-27 22:30:42,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 565 transitions, 10920 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-27 22:30:42,677 INFO L231 Difference]: Finished difference. Result has 246 places, 548 transitions, 9848 flow [2024-06-27 22:30:42,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9641, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9848, PETRI_PLACES=246, PETRI_TRANSITIONS=548} [2024-06-27 22:30:42,678 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 194 predicate places. [2024-06-27 22:30:42,678 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 548 transitions, 9848 flow [2024-06-27 22:30:42,678 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 22:30:42,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:42,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:42,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:30:42,678 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:30:42,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:42,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1111322039, now seen corresponding path program 1 times [2024-06-27 22:30:42,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:42,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542134800] [2024-06-27 22:30:42,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:42,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:44,169 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 22:30:44,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:44,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542134800] [2024-06-27 22:30:44,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542134800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:44,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:44,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:30:44,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240209166] [2024-06-27 22:30:44,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:44,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:30:44,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:44,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:30:44,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:30:44,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:30:44,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 548 transitions, 9848 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:44,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:44,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:30:44,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:47,346 INFO L124 PetriNetUnfolderBase]: 8179/14533 cut-off events. [2024-06-27 22:30:47,346 INFO L125 PetriNetUnfolderBase]: For 346741/346741 co-relation queries the response was YES. [2024-06-27 22:30:47,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92813 conditions, 14533 events. 8179/14533 cut-off events. For 346741/346741 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 116751 event pairs, 3270 based on Foata normal form. 2/14061 useless extension candidates. Maximal degree in co-relation 92696. Up to 11988 conditions per place. [2024-06-27 22:30:47,496 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 540 selfloop transitions, 25 changer transitions 0/575 dead transitions. [2024-06-27 22:30:47,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 575 transitions, 11194 flow [2024-06-27 22:30:47,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:30:47,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:30:47,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2024-06-27 22:30:47,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4701086956521739 [2024-06-27 22:30:47,498 INFO L175 Difference]: Start difference. First operand has 246 places, 548 transitions, 9848 flow. Second operand 8 states and 173 transitions. [2024-06-27 22:30:47,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 575 transitions, 11194 flow [2024-06-27 22:30:48,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 575 transitions, 11042 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-06-27 22:30:48,372 INFO L231 Difference]: Finished difference. Result has 250 places, 550 transitions, 9817 flow [2024-06-27 22:30:48,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9696, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9817, PETRI_PLACES=250, PETRI_TRANSITIONS=550} [2024-06-27 22:30:48,373 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 198 predicate places. [2024-06-27 22:30:48,373 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 550 transitions, 9817 flow [2024-06-27 22:30:48,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:48,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:48,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:48,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:30:48,374 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:30:48,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:48,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1832627883, now seen corresponding path program 1 times [2024-06-27 22:30:48,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:48,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577551402] [2024-06-27 22:30:48,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:48,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:49,463 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 22:30:49,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:49,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577551402] [2024-06-27 22:30:49,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577551402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:49,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:49,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:30:49,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281677985] [2024-06-27 22:30:49,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:49,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:30:49,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:49,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:30:49,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:30:49,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 22:30:49,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 550 transitions, 9817 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:49,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:49,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 22:30:49,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:52,296 INFO L124 PetriNetUnfolderBase]: 7748/13955 cut-off events. [2024-06-27 22:30:52,296 INFO L125 PetriNetUnfolderBase]: For 349524/349558 co-relation queries the response was YES. [2024-06-27 22:30:52,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89775 conditions, 13955 events. 7748/13955 cut-off events. For 349524/349558 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 113657 event pairs, 2641 based on Foata normal form. 9/13430 useless extension candidates. Maximal degree in co-relation 89657. Up to 10701 conditions per place. [2024-06-27 22:30:52,477 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 380 selfloop transitions, 192 changer transitions 0/590 dead transitions. [2024-06-27 22:30:52,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 590 transitions, 11427 flow [2024-06-27 22:30:52,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:30:52,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:30:52,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-27 22:30:52,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.577639751552795 [2024-06-27 22:30:52,479 INFO L175 Difference]: Start difference. First operand has 250 places, 550 transitions, 9817 flow. Second operand 7 states and 186 transitions. [2024-06-27 22:30:52,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 590 transitions, 11427 flow [2024-06-27 22:30:53,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 590 transitions, 11336 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 22:30:53,409 INFO L231 Difference]: Finished difference. Result has 252 places, 564 transitions, 10528 flow [2024-06-27 22:30:53,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9726, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10528, PETRI_PLACES=252, PETRI_TRANSITIONS=564} [2024-06-27 22:30:53,410 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 200 predicate places. [2024-06-27 22:30:53,410 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 564 transitions, 10528 flow [2024-06-27 22:30:53,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:30:53,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:53,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:53,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:30:53,411 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:30:53,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:53,411 INFO L85 PathProgramCache]: Analyzing trace with hash -495430627, now seen corresponding path program 1 times [2024-06-27 22:30:53,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:53,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077576616] [2024-06-27 22:30:53,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:53,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:54,184 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 22:30:54,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:54,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077576616] [2024-06-27 22:30:54,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077576616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:54,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:54,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:30:54,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800436603] [2024-06-27 22:30:54,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:54,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:30:54,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:54,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:30:54,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:30:54,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:30:54,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 564 transitions, 10528 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 22:30:54,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:54,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:30:54,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:30:57,179 INFO L124 PetriNetUnfolderBase]: 8295/14639 cut-off events. [2024-06-27 22:30:57,180 INFO L125 PetriNetUnfolderBase]: For 383015/383019 co-relation queries the response was YES. [2024-06-27 22:30:57,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97784 conditions, 14639 events. 8295/14639 cut-off events. For 383015/383019 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 116385 event pairs, 2636 based on Foata normal form. 8/14175 useless extension candidates. Maximal degree in co-relation 97665. Up to 11893 conditions per place. [2024-06-27 22:30:57,398 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 508 selfloop transitions, 90 changer transitions 0/608 dead transitions. [2024-06-27 22:30:57,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 608 transitions, 12102 flow [2024-06-27 22:30:57,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:30:57,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:30:57,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 22:30:57,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271739130434783 [2024-06-27 22:30:57,399 INFO L175 Difference]: Start difference. First operand has 252 places, 564 transitions, 10528 flow. Second operand 8 states and 194 transitions. [2024-06-27 22:30:57,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 608 transitions, 12102 flow [2024-06-27 22:30:58,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 608 transitions, 11648 flow, removed 76 selfloop flow, removed 4 redundant places. [2024-06-27 22:30:58,627 INFO L231 Difference]: Finished difference. Result has 256 places, 576 transitions, 10550 flow [2024-06-27 22:30:58,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10076, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10550, PETRI_PLACES=256, PETRI_TRANSITIONS=576} [2024-06-27 22:30:58,628 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 204 predicate places. [2024-06-27 22:30:58,628 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 576 transitions, 10550 flow [2024-06-27 22:30:58,628 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 22:30:58,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:30:58,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:30:58,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:30:58,629 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:30:58,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:30:58,629 INFO L85 PathProgramCache]: Analyzing trace with hash 365082525, now seen corresponding path program 2 times [2024-06-27 22:30:58,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:30:58,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354285551] [2024-06-27 22:30:58,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:30:58,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:30:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:30:59,513 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 22:30:59,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:30:59,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354285551] [2024-06-27 22:30:59,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354285551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:30:59,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:30:59,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:30:59,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704109459] [2024-06-27 22:30:59,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:30:59,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:30:59,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:30:59,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:30:59,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:30:59,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:30:59,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 576 transitions, 10550 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 22:30:59,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:30:59,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:30:59,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:02,484 INFO L124 PetriNetUnfolderBase]: 8311/14669 cut-off events. [2024-06-27 22:31:02,484 INFO L125 PetriNetUnfolderBase]: For 383348/383352 co-relation queries the response was YES. [2024-06-27 22:31:02,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97428 conditions, 14669 events. 8311/14669 cut-off events. For 383348/383352 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 116697 event pairs, 2644 based on Foata normal form. 8/14204 useless extension candidates. Maximal degree in co-relation 97307. Up to 11720 conditions per place. [2024-06-27 22:31:02,725 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 464 selfloop transitions, 137 changer transitions 0/611 dead transitions. [2024-06-27 22:31:02,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 611 transitions, 12074 flow [2024-06-27 22:31:02,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:31:02,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:31:02,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 22:31:02,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244565217391305 [2024-06-27 22:31:02,727 INFO L175 Difference]: Start difference. First operand has 256 places, 576 transitions, 10550 flow. Second operand 8 states and 193 transitions. [2024-06-27 22:31:02,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 611 transitions, 12074 flow [2024-06-27 22:31:04,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 611 transitions, 11843 flow, removed 65 selfloop flow, removed 4 redundant places. [2024-06-27 22:31:04,085 INFO L231 Difference]: Finished difference. Result has 260 places, 581 transitions, 10743 flow [2024-06-27 22:31:04,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10319, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10743, PETRI_PLACES=260, PETRI_TRANSITIONS=581} [2024-06-27 22:31:04,085 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 208 predicate places. [2024-06-27 22:31:04,085 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 581 transitions, 10743 flow [2024-06-27 22:31:04,086 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 22:31:04,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:04,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:04,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:31:04,086 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:31:04,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:04,086 INFO L85 PathProgramCache]: Analyzing trace with hash 365091019, now seen corresponding path program 2 times [2024-06-27 22:31:04,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:04,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99703621] [2024-06-27 22:31:04,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:04,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:05,114 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 22:31:05,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:05,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99703621] [2024-06-27 22:31:05,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99703621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:05,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:05,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:31:05,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540258138] [2024-06-27 22:31:05,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:05,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:31:05,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:05,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:31:05,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:31:05,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:31:05,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 581 transitions, 10743 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:05,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:05,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:31:05,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:07,883 INFO L124 PetriNetUnfolderBase]: 7995/14339 cut-off events. [2024-06-27 22:31:07,884 INFO L125 PetriNetUnfolderBase]: For 399475/399505 co-relation queries the response was YES. [2024-06-27 22:31:08,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96399 conditions, 14339 events. 7995/14339 cut-off events. For 399475/399505 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 116898 event pairs, 2484 based on Foata normal form. 5/13804 useless extension candidates. Maximal degree in co-relation 96278. Up to 10397 conditions per place. [2024-06-27 22:31:08,149 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 423 selfloop transitions, 184 changer transitions 0/626 dead transitions. [2024-06-27 22:31:08,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 626 transitions, 12751 flow [2024-06-27 22:31:08,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:31:08,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:31:08,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-06-27 22:31:08,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5962732919254659 [2024-06-27 22:31:08,151 INFO L175 Difference]: Start difference. First operand has 260 places, 581 transitions, 10743 flow. Second operand 7 states and 192 transitions. [2024-06-27 22:31:08,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 626 transitions, 12751 flow [2024-06-27 22:31:09,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 626 transitions, 12424 flow, removed 72 selfloop flow, removed 5 redundant places. [2024-06-27 22:31:09,477 INFO L231 Difference]: Finished difference. Result has 264 places, 592 transitions, 11160 flow [2024-06-27 22:31:09,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10416, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11160, PETRI_PLACES=264, PETRI_TRANSITIONS=592} [2024-06-27 22:31:09,478 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 212 predicate places. [2024-06-27 22:31:09,478 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 592 transitions, 11160 flow [2024-06-27 22:31:09,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:09,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:09,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:09,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:31:09,479 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:31:09,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:09,479 INFO L85 PathProgramCache]: Analyzing trace with hash 365091453, now seen corresponding path program 1 times [2024-06-27 22:31:09,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:09,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687968897] [2024-06-27 22:31:09,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:09,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:10,880 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 22:31:10,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:10,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687968897] [2024-06-27 22:31:10,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687968897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:10,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:10,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:31:10,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198451793] [2024-06-27 22:31:10,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:10,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:31:10,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:10,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:31:10,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:31:10,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 22:31:10,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 592 transitions, 11160 flow. Second operand has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:10,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:10,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 22:31:10,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:14,034 INFO L124 PetriNetUnfolderBase]: 8003/14368 cut-off events. [2024-06-27 22:31:14,034 INFO L125 PetriNetUnfolderBase]: For 426607/426641 co-relation queries the response was YES. [2024-06-27 22:31:14,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99251 conditions, 14368 events. 8003/14368 cut-off events. For 426607/426641 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 117545 event pairs, 2898 based on Foata normal form. 6/13813 useless extension candidates. Maximal degree in co-relation 99127. Up to 11645 conditions per place. [2024-06-27 22:31:14,221 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 562 selfloop transitions, 51 changer transitions 0/631 dead transitions. [2024-06-27 22:31:14,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 631 transitions, 12847 flow [2024-06-27 22:31:14,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:31:14,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:31:14,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-27 22:31:14,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081521739130435 [2024-06-27 22:31:14,222 INFO L175 Difference]: Start difference. First operand has 264 places, 592 transitions, 11160 flow. Second operand 8 states and 187 transitions. [2024-06-27 22:31:14,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 631 transitions, 12847 flow [2024-06-27 22:31:15,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 631 transitions, 12647 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-27 22:31:15,533 INFO L231 Difference]: Finished difference. Result has 270 places, 605 transitions, 11482 flow [2024-06-27 22:31:15,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10962, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11482, PETRI_PLACES=270, PETRI_TRANSITIONS=605} [2024-06-27 22:31:15,534 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 218 predicate places. [2024-06-27 22:31:15,534 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 605 transitions, 11482 flow [2024-06-27 22:31:15,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:15,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:15,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:15,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:31:15,535 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 22:31:15,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:15,535 INFO L85 PathProgramCache]: Analyzing trace with hash 365078929, now seen corresponding path program 3 times [2024-06-27 22:31:15,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:15,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552402085] [2024-06-27 22:31:15,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:15,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:16,661 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 22:31:16,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:16,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552402085] [2024-06-27 22:31:16,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552402085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:16,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:16,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:31:16,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127942892] [2024-06-27 22:31:16,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:16,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:31:16,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:16,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:31:16,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:31:16,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 22:31:16,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 605 transitions, 11482 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:16,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:16,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 22:31:16,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:20,110 INFO L124 PetriNetUnfolderBase]: 8103/14527 cut-off events. [2024-06-27 22:31:20,110 INFO L125 PetriNetUnfolderBase]: For 443169/443199 co-relation queries the response was YES. [2024-06-27 22:31:20,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101755 conditions, 14527 events. 8103/14527 cut-off events. For 443169/443199 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 118693 event pairs, 2481 based on Foata normal form. 5/13984 useless extension candidates. Maximal degree in co-relation 101628. Up to 10493 conditions per place. [2024-06-27 22:31:20,356 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 444 selfloop transitions, 188 changer transitions 0/650 dead transitions. [2024-06-27 22:31:20,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 650 transitions, 13595 flow [2024-06-27 22:31:20,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:31:20,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:31:20,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-27 22:31:20,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5807453416149069 [2024-06-27 22:31:20,358 INFO L175 Difference]: Start difference. First operand has 270 places, 605 transitions, 11482 flow. Second operand 7 states and 187 transitions. [2024-06-27 22:31:20,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 650 transitions, 13595 flow [2024-06-27 22:31:21,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 650 transitions, 13341 flow, removed 122 selfloop flow, removed 2 redundant places. [2024-06-27 22:31:22,239 INFO L231 Difference]: Finished difference. Result has 277 places, 617 transitions, 12058 flow [2024-06-27 22:31:22,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11228, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12058, PETRI_PLACES=277, PETRI_TRANSITIONS=617} [2024-06-27 22:31:22,240 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 225 predicate places. [2024-06-27 22:31:22,240 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 617 transitions, 12058 flow [2024-06-27 22:31:22,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:22,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:22,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:22,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:31:22,241 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 22:31:22,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:22,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1383715753, now seen corresponding path program 3 times [2024-06-27 22:31:22,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:22,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146237755] [2024-06-27 22:31:22,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:22,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:23,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:23,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:23,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146237755] [2024-06-27 22:31:23,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146237755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:23,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:23,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:31:23,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939394987] [2024-06-27 22:31:23,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:23,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:31:23,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:23,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:31:23,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:31:23,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:31:23,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 617 transitions, 12058 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 22:31:23,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:23,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:31:23,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:26,905 INFO L124 PetriNetUnfolderBase]: 8675/15263 cut-off events. [2024-06-27 22:31:26,905 INFO L125 PetriNetUnfolderBase]: For 478746/478750 co-relation queries the response was YES. [2024-06-27 22:31:27,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109284 conditions, 15263 events. 8675/15263 cut-off events. For 478746/478750 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 122052 event pairs, 2450 based on Foata normal form. 7/14778 useless extension candidates. Maximal degree in co-relation 109154. Up to 12069 conditions per place. [2024-06-27 22:31:27,102 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 499 selfloop transitions, 148 changer transitions 0/657 dead transitions. [2024-06-27 22:31:27,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 657 transitions, 13841 flow [2024-06-27 22:31:27,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:31:27,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:31:27,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 22:31:27,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-27 22:31:27,106 INFO L175 Difference]: Start difference. First operand has 277 places, 617 transitions, 12058 flow. Second operand 7 states and 175 transitions. [2024-06-27 22:31:27,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 657 transitions, 13841 flow [2024-06-27 22:31:28,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 657 transitions, 13517 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-27 22:31:28,722 INFO L231 Difference]: Finished difference. Result has 281 places, 630 transitions, 12405 flow [2024-06-27 22:31:28,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11742, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12405, PETRI_PLACES=281, PETRI_TRANSITIONS=630} [2024-06-27 22:31:28,738 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 229 predicate places. [2024-06-27 22:31:28,738 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 630 transitions, 12405 flow [2024-06-27 22:31:28,738 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 22:31:28,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:28,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:28,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:31:28,739 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 22:31:28,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:28,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1476441545, now seen corresponding path program 4 times [2024-06-27 22:31:28,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:28,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485829868] [2024-06-27 22:31:28,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:28,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:29,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:29,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:29,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485829868] [2024-06-27 22:31:29,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485829868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:29,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:29,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:31:29,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992803534] [2024-06-27 22:31:29,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:29,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:31:29,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:29,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:31:29,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:31:29,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:31:29,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 630 transitions, 12405 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 22:31:29,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:29,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:31:29,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:33,750 INFO L124 PetriNetUnfolderBase]: 8684/15294 cut-off events. [2024-06-27 22:31:33,751 INFO L125 PetriNetUnfolderBase]: For 476708/476712 co-relation queries the response was YES. [2024-06-27 22:31:33,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109443 conditions, 15294 events. 8684/15294 cut-off events. For 476708/476712 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 122525 event pairs, 2490 based on Foata normal form. 6/14808 useless extension candidates. Maximal degree in co-relation 109311. Up to 12236 conditions per place. [2024-06-27 22:31:33,971 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 528 selfloop transitions, 130 changer transitions 0/668 dead transitions. [2024-06-27 22:31:33,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 668 transitions, 14294 flow [2024-06-27 22:31:33,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:31:33,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:31:33,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 22:31:33,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279503105590062 [2024-06-27 22:31:33,973 INFO L175 Difference]: Start difference. First operand has 281 places, 630 transitions, 12405 flow. Second operand 7 states and 170 transitions. [2024-06-27 22:31:33,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 668 transitions, 14294 flow [2024-06-27 22:31:35,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 668 transitions, 13835 flow, removed 102 selfloop flow, removed 4 redundant places. [2024-06-27 22:31:35,894 INFO L231 Difference]: Finished difference. Result has 285 places, 642 transitions, 12645 flow [2024-06-27 22:31:35,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=12010, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12645, PETRI_PLACES=285, PETRI_TRANSITIONS=642} [2024-06-27 22:31:35,904 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 233 predicate places. [2024-06-27 22:31:35,904 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 642 transitions, 12645 flow [2024-06-27 22:31:35,905 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 22:31:35,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:35,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:35,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:31:35,905 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:31:35,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:35,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1188009951, now seen corresponding path program 5 times [2024-06-27 22:31:35,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:35,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432573227] [2024-06-27 22:31:35,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:35,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:36,967 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 22:31:36,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:36,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432573227] [2024-06-27 22:31:36,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432573227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:36,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:36,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:31:36,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150115537] [2024-06-27 22:31:36,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:36,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:31:36,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:36,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:31:36,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:31:37,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:31:37,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 642 transitions, 12645 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 22:31:37,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:37,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:31:37,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:40,857 INFO L124 PetriNetUnfolderBase]: 8672/15262 cut-off events. [2024-06-27 22:31:40,857 INFO L125 PetriNetUnfolderBase]: For 475854/475854 co-relation queries the response was YES. [2024-06-27 22:31:41,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109043 conditions, 15262 events. 8672/15262 cut-off events. For 475854/475854 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 121927 event pairs, 2459 based on Foata normal form. 2/14773 useless extension candidates. Maximal degree in co-relation 108909. Up to 12417 conditions per place. [2024-06-27 22:31:41,093 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 569 selfloop transitions, 90 changer transitions 0/669 dead transitions. [2024-06-27 22:31:41,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 669 transitions, 14131 flow [2024-06-27 22:31:41,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:31:41,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:31:41,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-27 22:31:41,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-27 22:31:41,095 INFO L175 Difference]: Start difference. First operand has 285 places, 642 transitions, 12645 flow. Second operand 7 states and 168 transitions. [2024-06-27 22:31:41,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 669 transitions, 14131 flow [2024-06-27 22:31:42,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 669 transitions, 13961 flow, removed 62 selfloop flow, removed 2 redundant places. [2024-06-27 22:31:42,807 INFO L231 Difference]: Finished difference. Result has 290 places, 643 transitions, 12705 flow [2024-06-27 22:31:42,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=12475, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12705, PETRI_PLACES=290, PETRI_TRANSITIONS=643} [2024-06-27 22:31:42,808 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 238 predicate places. [2024-06-27 22:31:42,808 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 643 transitions, 12705 flow [2024-06-27 22:31:42,809 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 22:31:42,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:42,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:42,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:31:42,809 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:31:42,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:42,809 INFO L85 PathProgramCache]: Analyzing trace with hash 891256737, now seen corresponding path program 6 times [2024-06-27 22:31:42,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:42,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879522914] [2024-06-27 22:31:42,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:42,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:43,855 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 22:31:43,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:43,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879522914] [2024-06-27 22:31:43,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879522914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:43,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:43,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:31:43,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667328370] [2024-06-27 22:31:43,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:43,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:31:43,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:43,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:31:43,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:31:43,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:31:43,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 643 transitions, 12705 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 22:31:43,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:43,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:31:43,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:47,618 INFO L124 PetriNetUnfolderBase]: 8679/15261 cut-off events. [2024-06-27 22:31:47,619 INFO L125 PetriNetUnfolderBase]: For 481274/481274 co-relation queries the response was YES. [2024-06-27 22:31:47,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109423 conditions, 15261 events. 8679/15261 cut-off events. For 481274/481274 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 121892 event pairs, 2339 based on Foata normal form. 2/14774 useless extension candidates. Maximal degree in co-relation 109287. Up to 11977 conditions per place. [2024-06-27 22:31:47,847 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 466 selfloop transitions, 194 changer transitions 0/670 dead transitions. [2024-06-27 22:31:47,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 670 transitions, 14355 flow [2024-06-27 22:31:47,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:31:47,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:31:47,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 22:31:47,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5341614906832298 [2024-06-27 22:31:47,849 INFO L175 Difference]: Start difference. First operand has 290 places, 643 transitions, 12705 flow. Second operand 7 states and 172 transitions. [2024-06-27 22:31:47,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 670 transitions, 14355 flow [2024-06-27 22:31:49,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 670 transitions, 14160 flow, removed 62 selfloop flow, removed 2 redundant places. [2024-06-27 22:31:49,765 INFO L231 Difference]: Finished difference. Result has 296 places, 649 transitions, 13140 flow [2024-06-27 22:31:49,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=12510, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13140, PETRI_PLACES=296, PETRI_TRANSITIONS=649} [2024-06-27 22:31:49,766 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 244 predicate places. [2024-06-27 22:31:49,766 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 649 transitions, 13140 flow [2024-06-27 22:31:49,766 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 22:31:49,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:49,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:49,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:31:49,767 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:31:49,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:49,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1048560855, now seen corresponding path program 7 times [2024-06-27 22:31:49,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:49,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183679288] [2024-06-27 22:31:49,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:49,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:50,928 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 22:31:50,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:50,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183679288] [2024-06-27 22:31:50,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183679288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:50,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:50,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:31:50,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341641544] [2024-06-27 22:31:50,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:50,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:31:50,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:50,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:31:50,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:31:50,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:31:50,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 649 transitions, 13140 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 22:31:50,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:50,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:31:50,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:54,657 INFO L124 PetriNetUnfolderBase]: 8691/15294 cut-off events. [2024-06-27 22:31:54,658 INFO L125 PetriNetUnfolderBase]: For 497490/497494 co-relation queries the response was YES. [2024-06-27 22:31:54,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110490 conditions, 15294 events. 8691/15294 cut-off events. For 497490/497494 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 122428 event pairs, 2426 based on Foata normal form. 2/14803 useless extension candidates. Maximal degree in co-relation 110351. Up to 11606 conditions per place. [2024-06-27 22:31:54,876 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 379 selfloop transitions, 283 changer transitions 0/672 dead transitions. [2024-06-27 22:31:54,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 672 transitions, 14829 flow [2024-06-27 22:31:54,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:31:54,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:31:54,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-27 22:31:54,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945652173913043 [2024-06-27 22:31:54,878 INFO L175 Difference]: Start difference. First operand has 296 places, 649 transitions, 13140 flow. Second operand 8 states and 182 transitions. [2024-06-27 22:31:54,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 672 transitions, 14829 flow