./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi004.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi004.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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/rfi004.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi004.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-eb4cb34-m [2024-06-21 19:13:29,600 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 19:13:29,680 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 19:13:29,686 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 19:13:29,687 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 19:13:29,714 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 19:13:29,715 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 19:13:29,716 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 19:13:29,716 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 19:13:29,720 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 19:13:29,720 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 19:13:29,721 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 19:13:29,722 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 19:13:29,723 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 19:13:29,723 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 19:13:29,724 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 19:13:29,724 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 19:13:29,724 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 19:13:29,724 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 19:13:29,724 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 19:13:29,725 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 19:13:29,725 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 19:13:29,725 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 19:13:29,726 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 19:13:29,726 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 19:13:29,726 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 19:13:29,726 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 19:13:29,727 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 19:13:29,727 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 19:13:29,728 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 19:13:29,728 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 19:13:29,729 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 19:13:29,729 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:13:29,729 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 19:13:29,729 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 19:13:29,730 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 19:13:29,730 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 19:13:29,730 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 19:13:29,730 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 19:13:29,730 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 19:13:29,730 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 19:13:29,731 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 19:13:29,731 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 19:13:29,731 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 19:13:29,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 19:13:30,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 19:13:30,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 19:13:30,012 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 19:13:30,013 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 19:13:30,014 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi004.i [2024-06-21 19:13:31,226 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 19:13:31,525 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 19:13:31,526 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi004.i [2024-06-21 19:13:31,545 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/653efaa9e/a2d1389568014496b6294875a72c37b6/FLAG41ef99e7c [2024-06-21 19:13:31,560 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/653efaa9e/a2d1389568014496b6294875a72c37b6 [2024-06-21 19:13:31,562 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 19:13:31,563 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 19:13:31,565 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi004.yml/witness.yml [2024-06-21 19:13:31,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 19:13:31,650 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 19:13:31,652 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 19:13:31,652 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 19:13:31,656 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 19:13:31,657 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:13:31" (1/2) ... [2024-06-21 19:13:31,658 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a676a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:13:31, skipping insertion in model container [2024-06-21 19:13:31,658 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:13:31" (1/2) ... [2024-06-21 19:13:31,660 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1f40c94b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:13:31, skipping insertion in model container [2024-06-21 19:13:31,660 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:13:31" (2/2) ... [2024-06-21 19:13:31,662 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a676a4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:31, skipping insertion in model container [2024-06-21 19:13:31,662 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:13:31" (2/2) ... [2024-06-21 19:13:31,663 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 19:13:31,690 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 19:13:31,692 INFO L97 edCorrectnessWitness]: Location invariant before [L818-L818] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$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) [2024-06-21 19:13:31,692 INFO L97 edCorrectnessWitness]: Location invariant before [L819-L819] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$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) [2024-06-21 19:13:31,692 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 19:13:31,692 INFO L106 edCorrectnessWitness]: ghost_update [L816-L816] multithreaded = 1; [2024-06-21 19:13:31,738 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 19:13:32,100 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:13:32,111 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 19:13:32,271 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:13:32,357 INFO L206 MainTranslator]: Completed translation [2024-06-21 19:13:32,357 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:32 WrapperNode [2024-06-21 19:13:32,358 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 19:13:32,373 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 19:13:32,374 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 19:13:32,374 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 19:13:32,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:32" (1/1) ... [2024-06-21 19:13:32,412 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:32" (1/1) ... [2024-06-21 19:13:32,449 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 121 [2024-06-21 19:13:32,452 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 19:13:32,452 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 19:13:32,452 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 19:13:32,453 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 19:13:32,462 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:32" (1/1) ... [2024-06-21 19:13:32,462 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:32" (1/1) ... [2024-06-21 19:13:32,466 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:32" (1/1) ... [2024-06-21 19:13:32,481 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]. [2024-06-21 19:13:32,482 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:32" (1/1) ... [2024-06-21 19:13:32,482 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:32" (1/1) ... [2024-06-21 19:13:32,491 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:32" (1/1) ... [2024-06-21 19:13:32,492 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:32" (1/1) ... [2024-06-21 19:13:32,494 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:32" (1/1) ... [2024-06-21 19:13:32,496 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:32" (1/1) ... [2024-06-21 19:13:32,500 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 19:13:32,501 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 19:13:32,501 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 19:13:32,501 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 19:13:32,502 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:32" (1/1) ... [2024-06-21 19:13:32,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:13:32,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 19:13:32,532 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) [2024-06-21 19:13:32,558 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 [2024-06-21 19:13:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 19:13:32,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 19:13:32,576 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 19:13:32,577 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 19:13:32,577 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 19:13:32,577 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 19:13:32,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 19:13:32,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 19:13:32,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 19:13:32,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 19:13:32,579 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 19:13:32,742 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 19:13:32,744 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 19:13:33,202 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 19:13:33,202 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 19:13:33,367 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 19:13:33,368 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 19:13:33,370 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:13:33 BoogieIcfgContainer [2024-06-21 19:13:33,370 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 19:13:33,408 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 19:13:33,408 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 19:13:33,411 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 19:13:33,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 07:13:31" (1/4) ... [2024-06-21 19:13:33,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f4cd52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 07:13:33, skipping insertion in model container [2024-06-21 19:13:33,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:13:31" (2/4) ... [2024-06-21 19:13:33,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f4cd52 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 07:13:33, skipping insertion in model container [2024-06-21 19:13:33,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:13:32" (3/4) ... [2024-06-21 19:13:33,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f4cd52 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 07:13:33, skipping insertion in model container [2024-06-21 19:13:33,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:13:33" (4/4) ... [2024-06-21 19:13:33,417 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi004.i [2024-06-21 19:13:33,433 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 19:13:33,434 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-21 19:13:33,434 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 19:13:33,485 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 19:13:33,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-21 19:13:33,552 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-21 19:13:33,552 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:13:33,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 19:13:33,554 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-21 19:13:33,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-21 19:13:33,571 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 19:13:33,581 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;@4d68ddc2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 19:13:33,581 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-21 19:13:33,585 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 19:13:33,586 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 19:13:33,586 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:13:33,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:33,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 19:13:33,587 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:13:33,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:33,595 INFO L85 PathProgramCache]: Analyzing trace with hash 329103778, now seen corresponding path program 1 times [2024-06-21 19:13:33,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:33,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657620193] [2024-06-21 19:13:33,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:33,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:35,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:35,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:35,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657620193] [2024-06-21 19:13:35,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657620193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:35,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:35,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 19:13:35,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303131323] [2024-06-21 19:13:35,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:35,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 19:13:35,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:35,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 19:13:35,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 19:13:35,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-06-21 19:13:35,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:35,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:35,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-06-21 19:13:35,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:35,420 INFO L124 PetriNetUnfolderBase]: 131/269 cut-off events. [2024-06-21 19:13:35,421 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-21 19:13:35,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 269 events. 131/269 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1082 event pairs, 75 based on Foata normal form. 1/258 useless extension candidates. Maximal degree in co-relation 514. Up to 235 conditions per place. [2024-06-21 19:13:35,427 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 20 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-21 19:13:35,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 115 flow [2024-06-21 19:13:35,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 19:13:35,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 19:13:35,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-06-21 19:13:35,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2024-06-21 19:13:35,439 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 61 transitions. [2024-06-21 19:13:35,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 115 flow [2024-06-21 19:13:35,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 19:13:35,443 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-21 19:13:35,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-21 19:13:35,448 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-21 19:13:35,448 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-21 19:13:35,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:35,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:35,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:35,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 19:13:35,449 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:13:35,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:35,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1558109713, now seen corresponding path program 1 times [2024-06-21 19:13:35,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:35,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354334772] [2024-06-21 19:13:35,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:35,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:36,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:36,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:36,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354334772] [2024-06-21 19:13:36,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354334772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:36,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:36,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 19:13:36,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296182870] [2024-06-21 19:13:36,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:36,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 19:13:36,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:36,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 19:13:36,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 19:13:36,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-21 19:13:36,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:36,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:36,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-21 19:13:36,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:36,879 INFO L124 PetriNetUnfolderBase]: 150/298 cut-off events. [2024-06-21 19:13:36,880 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-06-21 19:13:36,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 298 events. 150/298 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1171 event pairs, 68 based on Foata normal form. 2/299 useless extension candidates. Maximal degree in co-relation 654. Up to 258 conditions per place. [2024-06-21 19:13:36,882 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 25 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-21 19:13:36,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 159 flow [2024-06-21 19:13:36,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 19:13:36,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 19:13:36,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2024-06-21 19:13:36,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-06-21 19:13:36,885 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 76 transitions. [2024-06-21 19:13:36,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 159 flow [2024-06-21 19:13:36,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 19:13:36,886 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-21 19:13:36,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-21 19:13:36,887 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-21 19:13:36,888 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-21 19:13:36,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:36,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:36,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:36,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 19:13:36,889 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:13:36,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:36,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1600172878, now seen corresponding path program 1 times [2024-06-21 19:13:36,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:36,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642865095] [2024-06-21 19:13:36,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:36,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:38,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:38,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:38,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642865095] [2024-06-21 19:13:38,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642865095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:38,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:38,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:13:38,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43938843] [2024-06-21 19:13:38,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:38,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:13:38,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:38,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:13:38,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:13:38,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-21 19:13:38,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:38,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:38,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-21 19:13:38,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:38,927 INFO L124 PetriNetUnfolderBase]: 147/292 cut-off events. [2024-06-21 19:13:38,927 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2024-06-21 19:13:38,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 292 events. 147/292 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1123 event pairs, 47 based on Foata normal form. 2/293 useless extension candidates. Maximal degree in co-relation 714. Up to 244 conditions per place. [2024-06-21 19:13:38,930 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 29 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-21 19:13:38,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 207 flow [2024-06-21 19:13:38,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:13:38,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:13:38,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-06-21 19:13:38,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58125 [2024-06-21 19:13:38,932 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 93 transitions. [2024-06-21 19:13:38,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 207 flow [2024-06-21 19:13:38,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 198 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-21 19:13:38,935 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-21 19:13:38,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-21 19:13:38,935 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-21 19:13:38,936 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-21 19:13:38,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:38,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:38,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:38,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 19:13:38,937 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:13:38,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:38,937 INFO L85 PathProgramCache]: Analyzing trace with hash -2147284969, now seen corresponding path program 1 times [2024-06-21 19:13:38,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:38,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173383772] [2024-06-21 19:13:38,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:38,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:40,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:40,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:40,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173383772] [2024-06-21 19:13:40,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173383772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:40,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:40,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:13:40,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929058424] [2024-06-21 19:13:40,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:40,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:13:40,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:40,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:13:40,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:13:40,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:13:40,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 121 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:40,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:40,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:13:40,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:40,431 INFO L124 PetriNetUnfolderBase]: 145/279 cut-off events. [2024-06-21 19:13:40,431 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2024-06-21 19:13:40,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 785 conditions, 279 events. 145/279 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1085 event pairs, 79 based on Foata normal form. 1/275 useless extension candidates. Maximal degree in co-relation 769. Up to 256 conditions per place. [2024-06-21 19:13:40,434 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 25 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2024-06-21 19:13:40,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 213 flow [2024-06-21 19:13:40,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:13:40,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:13:40,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-06-21 19:13:40,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 19:13:40,439 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 6 states and 84 transitions. [2024-06-21 19:13:40,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 213 flow [2024-06-21 19:13:40,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 196 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-21 19:13:40,443 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 150 flow [2024-06-21 19:13:40,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=150, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-06-21 19:13:40,445 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2024-06-21 19:13:40,445 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 150 flow [2024-06-21 19:13:40,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:40,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:40,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:40,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 19:13:40,446 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:13:40,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:40,447 INFO L85 PathProgramCache]: Analyzing trace with hash 260036671, now seen corresponding path program 1 times [2024-06-21 19:13:40,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:40,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838919762] [2024-06-21 19:13:40,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:40,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:42,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:42,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:42,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838919762] [2024-06-21 19:13:42,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838919762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:42,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:42,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:13:42,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138503725] [2024-06-21 19:13:42,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:42,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:13:42,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:42,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:13:42,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:13:42,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-21 19:13:42,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:42,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:42,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-21 19:13:42,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:42,882 INFO L124 PetriNetUnfolderBase]: 141/277 cut-off events. [2024-06-21 19:13:42,882 INFO L125 PetriNetUnfolderBase]: For 422/422 co-relation queries the response was YES. [2024-06-21 19:13:42,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 818 conditions, 277 events. 141/277 cut-off events. For 422/422 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1046 event pairs, 24 based on Foata normal form. 4/280 useless extension candidates. Maximal degree in co-relation 800. Up to 215 conditions per place. [2024-06-21 19:13:42,886 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 31 selfloop transitions, 9 changer transitions 0/46 dead transitions. [2024-06-21 19:13:42,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 258 flow [2024-06-21 19:13:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:13:42,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:13:42,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-21 19:13:42,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-21 19:13:42,888 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 150 flow. Second operand 6 states and 105 transitions. [2024-06-21 19:13:42,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 258 flow [2024-06-21 19:13:42,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 46 transitions, 245 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-21 19:13:42,891 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 151 flow [2024-06-21 19:13:42,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=151, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-21 19:13:42,892 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-21 19:13:42,892 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 151 flow [2024-06-21 19:13:42,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:42,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:42,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:42,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 19:13:42,893 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:13:42,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:42,894 INFO L85 PathProgramCache]: Analyzing trace with hash 633718762, now seen corresponding path program 1 times [2024-06-21 19:13:42,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:42,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142564413] [2024-06-21 19:13:42,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:42,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:44,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:44,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:44,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142564413] [2024-06-21 19:13:44,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142564413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:44,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:44,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:13:44,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665798692] [2024-06-21 19:13:44,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:44,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:13:44,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:44,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:13:44,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:13:44,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:13:44,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 151 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:44,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:44,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:13:44,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:44,402 INFO L124 PetriNetUnfolderBase]: 155/309 cut-off events. [2024-06-21 19:13:44,403 INFO L125 PetriNetUnfolderBase]: For 645/645 co-relation queries the response was YES. [2024-06-21 19:13:44,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 957 conditions, 309 events. 155/309 cut-off events. For 645/645 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1230 event pairs, 40 based on Foata normal form. 2/310 useless extension candidates. Maximal degree in co-relation 938. Up to 244 conditions per place. [2024-06-21 19:13:44,406 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 30 selfloop transitions, 15 changer transitions 0/50 dead transitions. [2024-06-21 19:13:44,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 50 transitions, 308 flow [2024-06-21 19:13:44,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:13:44,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:13:44,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-21 19:13:44,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-21 19:13:44,408 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 151 flow. Second operand 7 states and 104 transitions. [2024-06-21 19:13:44,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 50 transitions, 308 flow [2024-06-21 19:13:44,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 50 transitions, 279 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-21 19:13:44,413 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 210 flow [2024-06-21 19:13:44,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=210, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2024-06-21 19:13:44,416 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-21 19:13:44,416 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 210 flow [2024-06-21 19:13:44,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:44,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:44,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:44,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 19:13:44,418 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:13:44,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:44,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1042483786, now seen corresponding path program 2 times [2024-06-21 19:13:44,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:44,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20386275] [2024-06-21 19:13:44,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:44,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:45,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:45,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:45,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20386275] [2024-06-21 19:13:45,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20386275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:45,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:45,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:13:45,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342829599] [2024-06-21 19:13:45,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:45,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:13:45,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:45,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:13:45,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:13:45,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:13:45,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:45,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:45,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:13:45,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:45,916 INFO L124 PetriNetUnfolderBase]: 161/321 cut-off events. [2024-06-21 19:13:45,916 INFO L125 PetriNetUnfolderBase]: For 884/884 co-relation queries the response was YES. [2024-06-21 19:13:45,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1090 conditions, 321 events. 161/321 cut-off events. For 884/884 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1319 event pairs, 42 based on Foata normal form. 2/318 useless extension candidates. Maximal degree in co-relation 1068. Up to 254 conditions per place. [2024-06-21 19:13:45,920 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 31 selfloop transitions, 16 changer transitions 0/52 dead transitions. [2024-06-21 19:13:45,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 52 transitions, 359 flow [2024-06-21 19:13:45,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:13:45,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:13:45,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2024-06-21 19:13:45,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-06-21 19:13:45,921 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 210 flow. Second operand 6 states and 93 transitions. [2024-06-21 19:13:45,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 52 transitions, 359 flow [2024-06-21 19:13:45,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 335 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-21 19:13:45,924 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 258 flow [2024-06-21 19:13:45,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-06-21 19:13:45,925 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2024-06-21 19:13:45,925 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 258 flow [2024-06-21 19:13:45,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:45,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:45,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:45,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 19:13:45,926 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:13:45,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:45,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1956532426, now seen corresponding path program 3 times [2024-06-21 19:13:45,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:45,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796636011] [2024-06-21 19:13:45,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:45,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:47,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:47,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:47,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796636011] [2024-06-21 19:13:47,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796636011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:47,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:47,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:13:47,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887978111] [2024-06-21 19:13:47,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:47,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:13:47,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:47,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:13:47,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:13:47,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:13:47,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:47,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:47,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:13:47,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:47,419 INFO L124 PetriNetUnfolderBase]: 159/316 cut-off events. [2024-06-21 19:13:47,420 INFO L125 PetriNetUnfolderBase]: For 1218/1218 co-relation queries the response was YES. [2024-06-21 19:13:47,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1155 conditions, 316 events. 159/316 cut-off events. For 1218/1218 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1281 event pairs, 41 based on Foata normal form. 1/314 useless extension candidates. Maximal degree in co-relation 1132. Up to 259 conditions per place. [2024-06-21 19:13:47,422 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 33 selfloop transitions, 17 changer transitions 0/55 dead transitions. [2024-06-21 19:13:47,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 412 flow [2024-06-21 19:13:47,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:13:47,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:13:47,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-21 19:13:47,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2024-06-21 19:13:47,424 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 258 flow. Second operand 6 states and 89 transitions. [2024-06-21 19:13:47,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 412 flow [2024-06-21 19:13:47,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 55 transitions, 375 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-21 19:13:47,428 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 325 flow [2024-06-21 19:13:47,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-06-21 19:13:47,428 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2024-06-21 19:13:47,429 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 325 flow [2024-06-21 19:13:47,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:47,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:47,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:47,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 19:13:47,430 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:13:47,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:47,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1956523498, now seen corresponding path program 1 times [2024-06-21 19:13:47,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:47,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745055089] [2024-06-21 19:13:47,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:47,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:48,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:48,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:48,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745055089] [2024-06-21 19:13:48,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745055089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:48,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:48,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:13:48,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143987593] [2024-06-21 19:13:48,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:48,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:13:48,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:48,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:13:48,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:13:48,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:13:48,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 325 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:48,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:48,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:13:48,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:49,113 INFO L124 PetriNetUnfolderBase]: 165/332 cut-off events. [2024-06-21 19:13:49,113 INFO L125 PetriNetUnfolderBase]: For 1384/1384 co-relation queries the response was YES. [2024-06-21 19:13:49,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1242 conditions, 332 events. 165/332 cut-off events. For 1384/1384 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1348 event pairs, 71 based on Foata normal form. 1/332 useless extension candidates. Maximal degree in co-relation 1215. Up to 284 conditions per place. [2024-06-21 19:13:49,116 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 43 selfloop transitions, 12 changer transitions 0/60 dead transitions. [2024-06-21 19:13:49,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 467 flow [2024-06-21 19:13:49,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:13:49,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:13:49,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-21 19:13:49,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 19:13:49,118 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 325 flow. Second operand 7 states and 98 transitions. [2024-06-21 19:13:49,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 467 flow [2024-06-21 19:13:49,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 445 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-21 19:13:49,122 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 359 flow [2024-06-21 19:13:49,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=359, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2024-06-21 19:13:49,123 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2024-06-21 19:13:49,123 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 359 flow [2024-06-21 19:13:49,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:49,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:49,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:49,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 19:13:49,124 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:13:49,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:49,125 INFO L85 PathProgramCache]: Analyzing trace with hash 63069547, now seen corresponding path program 1 times [2024-06-21 19:13:49,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:49,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776343241] [2024-06-21 19:13:49,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:49,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:50,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:50,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:50,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776343241] [2024-06-21 19:13:50,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776343241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:50,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:50,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:13:50,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888448969] [2024-06-21 19:13:50,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:50,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:13:50,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:50,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:13:50,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:13:50,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:13:50,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 359 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:50,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:50,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:13:50,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:51,300 INFO L124 PetriNetUnfolderBase]: 160/322 cut-off events. [2024-06-21 19:13:51,300 INFO L125 PetriNetUnfolderBase]: For 1731/1731 co-relation queries the response was YES. [2024-06-21 19:13:51,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1293 conditions, 322 events. 160/322 cut-off events. For 1731/1731 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1328 event pairs, 38 based on Foata normal form. 1/322 useless extension candidates. Maximal degree in co-relation 1262. Up to 249 conditions per place. [2024-06-21 19:13:51,303 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 41 selfloop transitions, 20 changer transitions 0/67 dead transitions. [2024-06-21 19:13:51,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 67 transitions, 532 flow [2024-06-21 19:13:51,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:13:51,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:13:51,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2024-06-21 19:13:51,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-21 19:13:51,305 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 359 flow. Second operand 8 states and 116 transitions. [2024-06-21 19:13:51,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 67 transitions, 532 flow [2024-06-21 19:13:51,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 509 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-21 19:13:51,308 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 403 flow [2024-06-21 19:13:51,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=403, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2024-06-21 19:13:51,309 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-21 19:13:51,309 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 403 flow [2024-06-21 19:13:51,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:51,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:51,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:51,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 19:13:51,310 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:13:51,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:51,311 INFO L85 PathProgramCache]: Analyzing trace with hash 474644567, now seen corresponding path program 1 times [2024-06-21 19:13:51,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:51,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700858910] [2024-06-21 19:13:51,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:51,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:52,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:52,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:52,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700858910] [2024-06-21 19:13:52,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700858910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:52,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:52,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:13:52,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994796118] [2024-06-21 19:13:52,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:52,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:13:52,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:52,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:13:52,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:13:52,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:13:52,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 403 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:52,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:52,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:13:52,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:52,980 INFO L124 PetriNetUnfolderBase]: 194/376 cut-off events. [2024-06-21 19:13:52,980 INFO L125 PetriNetUnfolderBase]: For 2286/2286 co-relation queries the response was YES. [2024-06-21 19:13:52,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1564 conditions, 376 events. 194/376 cut-off events. For 2286/2286 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1562 event pairs, 45 based on Foata normal form. 1/376 useless extension candidates. Maximal degree in co-relation 1532. Up to 322 conditions per place. [2024-06-21 19:13:52,983 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 51 selfloop transitions, 17 changer transitions 0/72 dead transitions. [2024-06-21 19:13:52,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 599 flow [2024-06-21 19:13:52,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:13:52,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:13:52,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-21 19:13:52,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 19:13:52,985 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 403 flow. Second operand 9 states and 117 transitions. [2024-06-21 19:13:52,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 599 flow [2024-06-21 19:13:52,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 547 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-21 19:13:52,990 INFO L231 Difference]: Finished difference. Result has 72 places, 61 transitions, 431 flow [2024-06-21 19:13:52,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=431, PETRI_PLACES=72, PETRI_TRANSITIONS=61} [2024-06-21 19:13:52,990 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-21 19:13:52,991 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 431 flow [2024-06-21 19:13:52,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:52,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:52,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:52,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 19:13:52,991 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:13:52,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:52,992 INFO L85 PathProgramCache]: Analyzing trace with hash -764068861, now seen corresponding path program 2 times [2024-06-21 19:13:52,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:52,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995055557] [2024-06-21 19:13:52,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:52,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:54,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:54,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:54,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995055557] [2024-06-21 19:13:54,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995055557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:54,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:54,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:13:54,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384286511] [2024-06-21 19:13:54,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:54,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:13:54,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:54,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:13:54,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:13:54,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:13:54,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 61 transitions, 431 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:54,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:54,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:13:54,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:55,164 INFO L124 PetriNetUnfolderBase]: 180/362 cut-off events. [2024-06-21 19:13:55,164 INFO L125 PetriNetUnfolderBase]: For 2594/2594 co-relation queries the response was YES. [2024-06-21 19:13:55,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1604 conditions, 362 events. 180/362 cut-off events. For 2594/2594 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1564 event pairs, 41 based on Foata normal form. 1/359 useless extension candidates. Maximal degree in co-relation 1570. Up to 282 conditions per place. [2024-06-21 19:13:55,168 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 43 selfloop transitions, 20 changer transitions 0/70 dead transitions. [2024-06-21 19:13:55,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 70 transitions, 597 flow [2024-06-21 19:13:55,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:13:55,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:13:55,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 105 transitions. [2024-06-21 19:13:55,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-21 19:13:55,169 INFO L175 Difference]: Start difference. First operand has 72 places, 61 transitions, 431 flow. Second operand 7 states and 105 transitions. [2024-06-21 19:13:55,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 70 transitions, 597 flow [2024-06-21 19:13:55,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 70 transitions, 564 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-21 19:13:55,174 INFO L231 Difference]: Finished difference. Result has 75 places, 63 transitions, 469 flow [2024-06-21 19:13:55,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=469, PETRI_PLACES=75, PETRI_TRANSITIONS=63} [2024-06-21 19:13:55,175 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-21 19:13:55,175 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 63 transitions, 469 flow [2024-06-21 19:13:55,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:55,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:55,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:55,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 19:13:55,176 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:13:55,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:55,177 INFO L85 PathProgramCache]: Analyzing trace with hash 968036949, now seen corresponding path program 3 times [2024-06-21 19:13:55,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:55,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642014701] [2024-06-21 19:13:55,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:55,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:56,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:56,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:56,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642014701] [2024-06-21 19:13:56,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642014701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:56,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:56,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:13:56,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862668153] [2024-06-21 19:13:56,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:56,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:13:56,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:56,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:13:56,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:13:56,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:13:56,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 469 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:56,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:56,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:13:56,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:57,236 INFO L124 PetriNetUnfolderBase]: 177/355 cut-off events. [2024-06-21 19:13:57,236 INFO L125 PetriNetUnfolderBase]: For 3013/3013 co-relation queries the response was YES. [2024-06-21 19:13:57,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1623 conditions, 355 events. 177/355 cut-off events. For 3013/3013 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1515 event pairs, 44 based on Foata normal form. 2/352 useless extension candidates. Maximal degree in co-relation 1588. Up to 251 conditions per place. [2024-06-21 19:13:57,239 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 34 selfloop transitions, 30 changer transitions 0/71 dead transitions. [2024-06-21 19:13:57,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 71 transitions, 637 flow [2024-06-21 19:13:57,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:13:57,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:13:57,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-21 19:13:57,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44140625 [2024-06-21 19:13:57,241 INFO L175 Difference]: Start difference. First operand has 75 places, 63 transitions, 469 flow. Second operand 8 states and 113 transitions. [2024-06-21 19:13:57,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 71 transitions, 637 flow [2024-06-21 19:13:57,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 71 transitions, 582 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-21 19:13:57,246 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 509 flow [2024-06-21 19:13:57,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=509, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2024-06-21 19:13:57,247 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-06-21 19:13:57,247 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 509 flow [2024-06-21 19:13:57,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:57,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:57,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:57,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 19:13:57,248 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:13:57,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:57,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1334666903, now seen corresponding path program 2 times [2024-06-21 19:13:57,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:57,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547731562] [2024-06-21 19:13:57,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:57,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:13:58,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:13:58,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:13:58,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547731562] [2024-06-21 19:13:58,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547731562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:13:58,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:13:58,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:13:58,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129495082] [2024-06-21 19:13:58,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:13:58,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:13:58,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:13:58,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:13:58,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:13:58,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:13:58,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 509 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:58,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:13:58,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:13:58,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:13:59,026 INFO L124 PetriNetUnfolderBase]: 199/380 cut-off events. [2024-06-21 19:13:59,026 INFO L125 PetriNetUnfolderBase]: For 3410/3410 co-relation queries the response was YES. [2024-06-21 19:13:59,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1768 conditions, 380 events. 199/380 cut-off events. For 3410/3410 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1583 event pairs, 45 based on Foata normal form. 1/378 useless extension candidates. Maximal degree in co-relation 1732. Up to 331 conditions per place. [2024-06-21 19:13:59,029 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 56 selfloop transitions, 17 changer transitions 0/77 dead transitions. [2024-06-21 19:13:59,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 77 transitions, 705 flow [2024-06-21 19:13:59,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:13:59,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:13:59,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-21 19:13:59,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-21 19:13:59,031 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 509 flow. Second operand 8 states and 106 transitions. [2024-06-21 19:13:59,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 77 transitions, 705 flow [2024-06-21 19:13:59,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 77 transitions, 626 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-21 19:13:59,037 INFO L231 Difference]: Finished difference. Result has 81 places, 69 transitions, 508 flow [2024-06-21 19:13:59,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=508, PETRI_PLACES=81, PETRI_TRANSITIONS=69} [2024-06-21 19:13:59,038 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2024-06-21 19:13:59,038 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 508 flow [2024-06-21 19:13:59,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:13:59,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:13:59,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:13:59,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 19:13:59,039 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:13:59,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:13:59,039 INFO L85 PathProgramCache]: Analyzing trace with hash 968043893, now seen corresponding path program 3 times [2024-06-21 19:13:59,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:13:59,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006002849] [2024-06-21 19:13:59,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:13:59,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:13:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:00,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:00,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:00,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006002849] [2024-06-21 19:14:00,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006002849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:00,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:00,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:14:00,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228023738] [2024-06-21 19:14:00,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:00,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:14:00,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:00,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:14:00,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:14:00,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:14:00,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 508 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:00,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:00,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:14:00,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:00,779 INFO L124 PetriNetUnfolderBase]: 205/397 cut-off events. [2024-06-21 19:14:00,779 INFO L125 PetriNetUnfolderBase]: For 3786/3786 co-relation queries the response was YES. [2024-06-21 19:14:00,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1837 conditions, 397 events. 205/397 cut-off events. For 3786/3786 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1698 event pairs, 45 based on Foata normal form. 1/395 useless extension candidates. Maximal degree in co-relation 1799. Up to 305 conditions per place. [2024-06-21 19:14:00,783 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 52 selfloop transitions, 30 changer transitions 0/86 dead transitions. [2024-06-21 19:14:00,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 86 transitions, 786 flow [2024-06-21 19:14:00,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:14:00,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:14:00,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-06-21 19:14:00,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43359375 [2024-06-21 19:14:00,785 INFO L175 Difference]: Start difference. First operand has 81 places, 69 transitions, 508 flow. Second operand 8 states and 111 transitions. [2024-06-21 19:14:00,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 86 transitions, 786 flow [2024-06-21 19:14:00,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 86 transitions, 729 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-21 19:14:00,792 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 619 flow [2024-06-21 19:14:00,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=619, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2024-06-21 19:14:00,793 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 56 predicate places. [2024-06-21 19:14:00,793 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 619 flow [2024-06-21 19:14:00,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:00,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:00,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:00,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 19:14:00,794 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:00,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:00,794 INFO L85 PathProgramCache]: Analyzing trace with hash -970516551, now seen corresponding path program 4 times [2024-06-21 19:14:00,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:00,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083015209] [2024-06-21 19:14:00,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:00,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:02,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:02,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:02,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083015209] [2024-06-21 19:14:02,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083015209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:02,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:02,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:14:02,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201493159] [2024-06-21 19:14:02,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:02,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:14:02,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:02,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:14:02,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:14:02,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:14:02,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 619 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:02,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:02,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:14:02,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:02,582 INFO L124 PetriNetUnfolderBase]: 208/402 cut-off events. [2024-06-21 19:14:02,582 INFO L125 PetriNetUnfolderBase]: For 4368/4368 co-relation queries the response was YES. [2024-06-21 19:14:02,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2001 conditions, 402 events. 208/402 cut-off events. For 4368/4368 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1722 event pairs, 45 based on Foata normal form. 1/400 useless extension candidates. Maximal degree in co-relation 1959. Up to 309 conditions per place. [2024-06-21 19:14:02,586 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 47 selfloop transitions, 38 changer transitions 0/89 dead transitions. [2024-06-21 19:14:02,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 872 flow [2024-06-21 19:14:02,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:14:02,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:14:02,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-21 19:14:02,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42578125 [2024-06-21 19:14:02,588 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 619 flow. Second operand 8 states and 109 transitions. [2024-06-21 19:14:02,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 872 flow [2024-06-21 19:14:02,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 89 transitions, 837 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-21 19:14:02,600 INFO L231 Difference]: Finished difference. Result has 93 places, 81 transitions, 700 flow [2024-06-21 19:14:02,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=700, PETRI_PLACES=93, PETRI_TRANSITIONS=81} [2024-06-21 19:14:02,601 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-21 19:14:02,601 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 81 transitions, 700 flow [2024-06-21 19:14:02,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:02,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:02,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:02,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 19:14:02,602 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:02,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:02,603 INFO L85 PathProgramCache]: Analyzing trace with hash 976318103, now seen corresponding path program 5 times [2024-06-21 19:14:02,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:02,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941738668] [2024-06-21 19:14:02,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:02,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:03,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:03,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:03,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941738668] [2024-06-21 19:14:03,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941738668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:03,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:03,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:14:03,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536663399] [2024-06-21 19:14:03,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:03,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:14:03,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:03,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:14:03,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:14:04,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:14:04,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 81 transitions, 700 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:04,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:04,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:14:04,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:04,225 INFO L124 PetriNetUnfolderBase]: 206/399 cut-off events. [2024-06-21 19:14:04,226 INFO L125 PetriNetUnfolderBase]: For 4667/4667 co-relation queries the response was YES. [2024-06-21 19:14:04,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2048 conditions, 399 events. 206/399 cut-off events. For 4667/4667 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1692 event pairs, 45 based on Foata normal form. 1/397 useless extension candidates. Maximal degree in co-relation 2004. Up to 307 conditions per place. [2024-06-21 19:14:04,229 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 49 selfloop transitions, 35 changer transitions 0/88 dead transitions. [2024-06-21 19:14:04,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 88 transitions, 884 flow [2024-06-21 19:14:04,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:14:04,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:14:04,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-21 19:14:04,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42578125 [2024-06-21 19:14:04,231 INFO L175 Difference]: Start difference. First operand has 93 places, 81 transitions, 700 flow. Second operand 8 states and 109 transitions. [2024-06-21 19:14:04,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 88 transitions, 884 flow [2024-06-21 19:14:04,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 88 transitions, 817 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-21 19:14:04,240 INFO L231 Difference]: Finished difference. Result has 98 places, 81 transitions, 708 flow [2024-06-21 19:14:04,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=708, PETRI_PLACES=98, PETRI_TRANSITIONS=81} [2024-06-21 19:14:04,241 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-21 19:14:04,241 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 81 transitions, 708 flow [2024-06-21 19:14:04,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:04,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:04,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:04,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 19:14:04,242 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:04,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:04,242 INFO L85 PathProgramCache]: Analyzing trace with hash 976625685, now seen corresponding path program 1 times [2024-06-21 19:14:04,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:04,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235901263] [2024-06-21 19:14:04,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:04,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:05,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:05,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:05,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235901263] [2024-06-21 19:14:05,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235901263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:05,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:05,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:05,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591460682] [2024-06-21 19:14:05,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:05,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:05,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:05,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:05,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:06,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:14:06,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 81 transitions, 708 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:06,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:06,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:14:06,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:06,446 INFO L124 PetriNetUnfolderBase]: 204/395 cut-off events. [2024-06-21 19:14:06,446 INFO L125 PetriNetUnfolderBase]: For 4883/4883 co-relation queries the response was YES. [2024-06-21 19:14:06,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2040 conditions, 395 events. 204/395 cut-off events. For 4883/4883 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1676 event pairs, 77 based on Foata normal form. 1/395 useless extension candidates. Maximal degree in co-relation 1995. Up to 345 conditions per place. [2024-06-21 19:14:06,450 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 71 selfloop transitions, 16 changer transitions 0/91 dead transitions. [2024-06-21 19:14:06,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 91 transitions, 910 flow [2024-06-21 19:14:06,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:06,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:06,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-21 19:14:06,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-21 19:14:06,452 INFO L175 Difference]: Start difference. First operand has 98 places, 81 transitions, 708 flow. Second operand 9 states and 114 transitions. [2024-06-21 19:14:06,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 91 transitions, 910 flow [2024-06-21 19:14:06,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 91 transitions, 860 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-21 19:14:06,462 INFO L231 Difference]: Finished difference. Result has 102 places, 83 transitions, 709 flow [2024-06-21 19:14:06,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=709, PETRI_PLACES=102, PETRI_TRANSITIONS=83} [2024-06-21 19:14:06,463 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-21 19:14:06,463 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 83 transitions, 709 flow [2024-06-21 19:14:06,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:06,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:06,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:06,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 19:14:06,464 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:06,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:06,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1955372208, now seen corresponding path program 1 times [2024-06-21 19:14:06,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:06,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075052728] [2024-06-21 19:14:06,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:06,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:07,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:07,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:07,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075052728] [2024-06-21 19:14:07,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075052728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:07,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:07,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:07,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919296606] [2024-06-21 19:14:07,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:07,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:07,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:07,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:07,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:07,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:14:07,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 83 transitions, 709 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:07,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:07,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:14:07,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:08,241 INFO L124 PetriNetUnfolderBase]: 207/403 cut-off events. [2024-06-21 19:14:08,241 INFO L125 PetriNetUnfolderBase]: For 5095/5095 co-relation queries the response was YES. [2024-06-21 19:14:08,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2086 conditions, 403 events. 207/403 cut-off events. For 5095/5095 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1723 event pairs, 40 based on Foata normal form. 1/403 useless extension candidates. Maximal degree in co-relation 2041. Up to 331 conditions per place. [2024-06-21 19:14:08,245 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 68 selfloop transitions, 23 changer transitions 0/95 dead transitions. [2024-06-21 19:14:08,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 95 transitions, 935 flow [2024-06-21 19:14:08,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:14:08,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:14:08,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2024-06-21 19:14:08,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-21 19:14:08,250 INFO L175 Difference]: Start difference. First operand has 102 places, 83 transitions, 709 flow. Second operand 8 states and 116 transitions. [2024-06-21 19:14:08,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 95 transitions, 935 flow [2024-06-21 19:14:08,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 95 transitions, 835 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-21 19:14:08,260 INFO L231 Difference]: Finished difference. Result has 100 places, 85 transitions, 685 flow [2024-06-21 19:14:08,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=685, PETRI_PLACES=100, PETRI_TRANSITIONS=85} [2024-06-21 19:14:08,261 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-06-21 19:14:08,261 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 85 transitions, 685 flow [2024-06-21 19:14:08,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:08,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:08,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:08,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 19:14:08,262 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:08,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:08,263 INFO L85 PathProgramCache]: Analyzing trace with hash 201091108, now seen corresponding path program 2 times [2024-06-21 19:14:08,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:08,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152416339] [2024-06-21 19:14:08,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:08,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:09,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:09,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:09,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152416339] [2024-06-21 19:14:09,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152416339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:09,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:09,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:09,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011445963] [2024-06-21 19:14:09,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:09,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:09,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:09,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:09,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:09,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:14:09,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 85 transitions, 685 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:09,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:09,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:14:09,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:10,005 INFO L124 PetriNetUnfolderBase]: 215/416 cut-off events. [2024-06-21 19:14:10,005 INFO L125 PetriNetUnfolderBase]: For 5875/5875 co-relation queries the response was YES. [2024-06-21 19:14:10,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2196 conditions, 416 events. 215/416 cut-off events. For 5875/5875 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1777 event pairs, 43 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 2152. Up to 301 conditions per place. [2024-06-21 19:14:10,010 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 60 selfloop transitions, 37 changer transitions 0/101 dead transitions. [2024-06-21 19:14:10,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 101 transitions, 1049 flow [2024-06-21 19:14:10,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:14:10,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:14:10,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 122 transitions. [2024-06-21 19:14:10,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765625 [2024-06-21 19:14:10,012 INFO L175 Difference]: Start difference. First operand has 100 places, 85 transitions, 685 flow. Second operand 8 states and 122 transitions. [2024-06-21 19:14:10,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 101 transitions, 1049 flow [2024-06-21 19:14:10,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 101 transitions, 991 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-21 19:14:10,023 INFO L231 Difference]: Finished difference. Result has 102 places, 91 transitions, 782 flow [2024-06-21 19:14:10,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=782, PETRI_PLACES=102, PETRI_TRANSITIONS=91} [2024-06-21 19:14:10,024 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-21 19:14:10,024 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 91 transitions, 782 flow [2024-06-21 19:14:10,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:10,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:10,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:10,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 19:14:10,025 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:10,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:10,025 INFO L85 PathProgramCache]: Analyzing trace with hash 210614308, now seen corresponding path program 3 times [2024-06-21 19:14:10,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:10,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617808434] [2024-06-21 19:14:10,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:10,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:11,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:11,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:11,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617808434] [2024-06-21 19:14:11,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617808434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:11,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:11,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:11,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337262181] [2024-06-21 19:14:11,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:11,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:11,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:11,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:11,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:11,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:14:11,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 91 transitions, 782 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:11,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:11,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:14:11,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:12,148 INFO L124 PetriNetUnfolderBase]: 218/420 cut-off events. [2024-06-21 19:14:12,148 INFO L125 PetriNetUnfolderBase]: For 6580/6580 co-relation queries the response was YES. [2024-06-21 19:14:12,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2297 conditions, 420 events. 218/420 cut-off events. For 6580/6580 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1801 event pairs, 76 based on Foata normal form. 1/420 useless extension candidates. Maximal degree in co-relation 2252. Up to 368 conditions per place. [2024-06-21 19:14:12,151 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 81 selfloop transitions, 16 changer transitions 0/101 dead transitions. [2024-06-21 19:14:12,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 101 transitions, 1022 flow [2024-06-21 19:14:12,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:12,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:12,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-21 19:14:12,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-21 19:14:12,153 INFO L175 Difference]: Start difference. First operand has 102 places, 91 transitions, 782 flow. Second operand 10 states and 122 transitions. [2024-06-21 19:14:12,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 101 transitions, 1022 flow [2024-06-21 19:14:12,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 101 transitions, 982 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-21 19:14:12,163 INFO L231 Difference]: Finished difference. Result has 109 places, 93 transitions, 811 flow [2024-06-21 19:14:12,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=811, PETRI_PLACES=109, PETRI_TRANSITIONS=93} [2024-06-21 19:14:12,163 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-21 19:14:12,163 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 93 transitions, 811 flow [2024-06-21 19:14:12,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:12,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:12,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:12,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 19:14:12,164 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:12,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:12,165 INFO L85 PathProgramCache]: Analyzing trace with hash 210287878, now seen corresponding path program 4 times [2024-06-21 19:14:12,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:12,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783929007] [2024-06-21 19:14:12,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:12,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:13,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:13,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:13,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783929007] [2024-06-21 19:14:13,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783929007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:13,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:13,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:13,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411971789] [2024-06-21 19:14:13,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:13,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:13,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:13,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:13,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:13,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:14:13,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 93 transitions, 811 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:13,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:13,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:14:13,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:13,707 INFO L124 PetriNetUnfolderBase]: 216/420 cut-off events. [2024-06-21 19:14:13,707 INFO L125 PetriNetUnfolderBase]: For 6865/6865 co-relation queries the response was YES. [2024-06-21 19:14:13,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2298 conditions, 420 events. 216/420 cut-off events. For 6865/6865 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1817 event pairs, 43 based on Foata normal form. 1/417 useless extension candidates. Maximal degree in co-relation 2250. Up to 303 conditions per place. [2024-06-21 19:14:13,710 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 56 selfloop transitions, 42 changer transitions 0/102 dead transitions. [2024-06-21 19:14:13,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 102 transitions, 1069 flow [2024-06-21 19:14:13,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:14:13,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:14:13,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2024-06-21 19:14:13,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-21 19:14:13,712 INFO L175 Difference]: Start difference. First operand has 109 places, 93 transitions, 811 flow. Second operand 8 states and 120 transitions. [2024-06-21 19:14:13,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 102 transitions, 1069 flow [2024-06-21 19:14:13,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 102 transitions, 1004 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-21 19:14:13,721 INFO L231 Difference]: Finished difference. Result has 109 places, 93 transitions, 835 flow [2024-06-21 19:14:13,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=835, PETRI_PLACES=109, PETRI_TRANSITIONS=93} [2024-06-21 19:14:13,722 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-21 19:14:13,722 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 93 transitions, 835 flow [2024-06-21 19:14:13,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:13,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:13,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:13,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 19:14:13,723 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:13,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:13,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1158862666, now seen corresponding path program 5 times [2024-06-21 19:14:13,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:13,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792472650] [2024-06-21 19:14:13,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:13,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:15,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:15,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:15,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792472650] [2024-06-21 19:14:15,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792472650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:15,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:15,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:15,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204360693] [2024-06-21 19:14:15,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:15,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:15,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:15,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:15,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:15,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:14:15,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 93 transitions, 835 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:15,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:15,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:14:15,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:15,501 INFO L124 PetriNetUnfolderBase]: 214/413 cut-off events. [2024-06-21 19:14:15,502 INFO L125 PetriNetUnfolderBase]: For 7076/7076 co-relation queries the response was YES. [2024-06-21 19:14:15,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2305 conditions, 413 events. 214/413 cut-off events. For 7076/7076 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1758 event pairs, 43 based on Foata normal form. 1/411 useless extension candidates. Maximal degree in co-relation 2257. Up to 301 conditions per place. [2024-06-21 19:14:15,504 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 60 selfloop transitions, 37 changer transitions 0/101 dead transitions. [2024-06-21 19:14:15,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 101 transitions, 1047 flow [2024-06-21 19:14:15,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:14:15,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:14:15,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-21 19:14:15,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47265625 [2024-06-21 19:14:15,506 INFO L175 Difference]: Start difference. First operand has 109 places, 93 transitions, 835 flow. Second operand 8 states and 121 transitions. [2024-06-21 19:14:15,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 101 transitions, 1047 flow [2024-06-21 19:14:15,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 101 transitions, 958 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-21 19:14:15,515 INFO L231 Difference]: Finished difference. Result has 111 places, 93 transitions, 825 flow [2024-06-21 19:14:15,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=825, PETRI_PLACES=111, PETRI_TRANSITIONS=93} [2024-06-21 19:14:15,515 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-21 19:14:15,515 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 93 transitions, 825 flow [2024-06-21 19:14:15,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:15,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:15,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:15,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 19:14:15,516 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:15,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:15,516 INFO L85 PathProgramCache]: Analyzing trace with hash 210626212, now seen corresponding path program 1 times [2024-06-21 19:14:15,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:15,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321142801] [2024-06-21 19:14:15,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:15,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:17,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:17,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:17,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321142801] [2024-06-21 19:14:17,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321142801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:17,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:17,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:14:17,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132935637] [2024-06-21 19:14:17,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:17,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:14:17,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:17,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:14:17,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:14:17,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:14:17,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 93 transitions, 825 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:17,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:17,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:14:17,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:17,787 INFO L124 PetriNetUnfolderBase]: 211/411 cut-off events. [2024-06-21 19:14:17,787 INFO L125 PetriNetUnfolderBase]: For 7352/7352 co-relation queries the response was YES. [2024-06-21 19:14:17,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2253 conditions, 411 events. 211/411 cut-off events. For 7352/7352 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1765 event pairs, 75 based on Foata normal form. 2/412 useless extension candidates. Maximal degree in co-relation 2204. Up to 351 conditions per place. [2024-06-21 19:14:17,790 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 82 selfloop transitions, 17 changer transitions 0/103 dead transitions. [2024-06-21 19:14:17,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 103 transitions, 1045 flow [2024-06-21 19:14:17,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:17,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:17,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-21 19:14:17,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-21 19:14:17,791 INFO L175 Difference]: Start difference. First operand has 111 places, 93 transitions, 825 flow. Second operand 10 states and 124 transitions. [2024-06-21 19:14:17,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 103 transitions, 1045 flow [2024-06-21 19:14:17,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 103 transitions, 926 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-21 19:14:17,802 INFO L231 Difference]: Finished difference. Result has 113 places, 93 transitions, 744 flow [2024-06-21 19:14:17,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=744, PETRI_PLACES=113, PETRI_TRANSITIONS=93} [2024-06-21 19:14:17,803 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 82 predicate places. [2024-06-21 19:14:17,803 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 93 transitions, 744 flow [2024-06-21 19:14:17,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:17,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:17,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:17,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 19:14:17,804 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:17,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:17,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1830078942, now seen corresponding path program 1 times [2024-06-21 19:14:17,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:17,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494208685] [2024-06-21 19:14:17,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:17,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:19,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:19,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:19,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494208685] [2024-06-21 19:14:19,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494208685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:19,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:19,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:14:19,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082985286] [2024-06-21 19:14:19,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:19,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:14:19,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:19,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:14:19,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:14:19,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:14:19,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 93 transitions, 744 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-21 19:14:19,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:19,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:14:19,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:19,515 INFO L124 PetriNetUnfolderBase]: 205/418 cut-off events. [2024-06-21 19:14:19,515 INFO L125 PetriNetUnfolderBase]: For 7335/7335 co-relation queries the response was YES. [2024-06-21 19:14:19,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2191 conditions, 418 events. 205/418 cut-off events. For 7335/7335 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1913 event pairs, 30 based on Foata normal form. 2/419 useless extension candidates. Maximal degree in co-relation 2140. Up to 315 conditions per place. [2024-06-21 19:14:19,518 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 82 selfloop transitions, 20 changer transitions 0/111 dead transitions. [2024-06-21 19:14:19,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 111 transitions, 1022 flow [2024-06-21 19:14:19,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:19,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:19,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-21 19:14:19,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-21 19:14:19,519 INFO L175 Difference]: Start difference. First operand has 113 places, 93 transitions, 744 flow. Second operand 9 states and 128 transitions. [2024-06-21 19:14:19,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 111 transitions, 1022 flow [2024-06-21 19:14:19,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 111 transitions, 982 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-21 19:14:19,529 INFO L231 Difference]: Finished difference. Result has 115 places, 98 transitions, 797 flow [2024-06-21 19:14:19,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=797, PETRI_PLACES=115, PETRI_TRANSITIONS=98} [2024-06-21 19:14:19,530 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-21 19:14:19,530 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 98 transitions, 797 flow [2024-06-21 19:14:19,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-21 19:14:19,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:19,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:19,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 19:14:19,530 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:19,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:19,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1395748824, now seen corresponding path program 2 times [2024-06-21 19:14:19,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:19,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79404354] [2024-06-21 19:14:19,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:19,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:20,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:20,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:20,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79404354] [2024-06-21 19:14:20,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79404354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:20,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:20,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:14:20,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026500784] [2024-06-21 19:14:20,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:20,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:14:20,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:20,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:14:20,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:14:20,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:14:20,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 98 transitions, 797 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-21 19:14:20,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:20,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:14:20,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:21,071 INFO L124 PetriNetUnfolderBase]: 215/444 cut-off events. [2024-06-21 19:14:21,071 INFO L125 PetriNetUnfolderBase]: For 8528/8528 co-relation queries the response was YES. [2024-06-21 19:14:21,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2368 conditions, 444 events. 215/444 cut-off events. For 8528/8528 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2092 event pairs, 31 based on Foata normal form. 2/445 useless extension candidates. Maximal degree in co-relation 2315. Up to 332 conditions per place. [2024-06-21 19:14:21,076 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 87 selfloop transitions, 19 changer transitions 0/115 dead transitions. [2024-06-21 19:14:21,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 115 transitions, 1071 flow [2024-06-21 19:14:21,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:21,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:21,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-06-21 19:14:21,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-21 19:14:21,077 INFO L175 Difference]: Start difference. First operand has 115 places, 98 transitions, 797 flow. Second operand 9 states and 129 transitions. [2024-06-21 19:14:21,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 115 transitions, 1071 flow [2024-06-21 19:14:21,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 115 transitions, 1022 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-21 19:14:21,088 INFO L231 Difference]: Finished difference. Result has 120 places, 100 transitions, 818 flow [2024-06-21 19:14:21,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=818, PETRI_PLACES=120, PETRI_TRANSITIONS=100} [2024-06-21 19:14:21,089 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-21 19:14:21,089 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 100 transitions, 818 flow [2024-06-21 19:14:21,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-21 19:14:21,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:21,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:21,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 19:14:21,090 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:21,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:21,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1392886904, now seen corresponding path program 1 times [2024-06-21 19:14:21,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:21,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519073983] [2024-06-21 19:14:21,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:21,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:22,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:22,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:22,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519073983] [2024-06-21 19:14:22,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519073983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:22,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:22,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:22,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153270339] [2024-06-21 19:14:22,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:22,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:22,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:22,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:22,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:22,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:14:22,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 100 transitions, 818 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:22,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:22,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:14:22,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:23,011 INFO L124 PetriNetUnfolderBase]: 245/482 cut-off events. [2024-06-21 19:14:23,011 INFO L125 PetriNetUnfolderBase]: For 9020/9020 co-relation queries the response was YES. [2024-06-21 19:14:23,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2555 conditions, 482 events. 245/482 cut-off events. For 9020/9020 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2204 event pairs, 32 based on Foata normal form. 1/482 useless extension candidates. Maximal degree in co-relation 2500. Up to 401 conditions per place. [2024-06-21 19:14:23,016 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 90 selfloop transitions, 23 changer transitions 0/117 dead transitions. [2024-06-21 19:14:23,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 117 transitions, 1118 flow [2024-06-21 19:14:23,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:23,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:23,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-21 19:14:23,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-21 19:14:23,018 INFO L175 Difference]: Start difference. First operand has 120 places, 100 transitions, 818 flow. Second operand 10 states and 131 transitions. [2024-06-21 19:14:23,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 117 transitions, 1118 flow [2024-06-21 19:14:23,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 117 transitions, 1068 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-21 19:14:23,037 INFO L231 Difference]: Finished difference. Result has 125 places, 104 transitions, 868 flow [2024-06-21 19:14:23,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=868, PETRI_PLACES=125, PETRI_TRANSITIONS=104} [2024-06-21 19:14:23,038 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-21 19:14:23,038 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 104 transitions, 868 flow [2024-06-21 19:14:23,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:23,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:23,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:23,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 19:14:23,039 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:23,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:23,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1111961560, now seen corresponding path program 3 times [2024-06-21 19:14:23,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:23,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611514129] [2024-06-21 19:14:23,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:23,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:24,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:24,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:24,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611514129] [2024-06-21 19:14:24,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611514129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:24,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:24,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:14:24,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344157243] [2024-06-21 19:14:24,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:24,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:14:24,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:24,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:14:24,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:14:24,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:14:24,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 104 transitions, 868 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-21 19:14:24,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:24,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:14:24,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:24,847 INFO L124 PetriNetUnfolderBase]: 223/463 cut-off events. [2024-06-21 19:14:24,848 INFO L125 PetriNetUnfolderBase]: For 10215/10215 co-relation queries the response was YES. [2024-06-21 19:14:24,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2503 conditions, 463 events. 223/463 cut-off events. For 10215/10215 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2235 event pairs, 35 based on Foata normal form. 4/464 useless extension candidates. Maximal degree in co-relation 2446. Up to 335 conditions per place. [2024-06-21 19:14:24,852 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 80 selfloop transitions, 27 changer transitions 0/117 dead transitions. [2024-06-21 19:14:24,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 117 transitions, 1132 flow [2024-06-21 19:14:24,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:24,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:24,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-21 19:14:24,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-21 19:14:24,861 INFO L175 Difference]: Start difference. First operand has 125 places, 104 transitions, 868 flow. Second operand 9 states and 128 transitions. [2024-06-21 19:14:24,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 117 transitions, 1132 flow [2024-06-21 19:14:24,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 117 transitions, 1065 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-21 19:14:24,877 INFO L231 Difference]: Finished difference. Result has 127 places, 105 transitions, 881 flow [2024-06-21 19:14:24,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=881, PETRI_PLACES=127, PETRI_TRANSITIONS=105} [2024-06-21 19:14:24,878 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-21 19:14:24,878 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 105 transitions, 881 flow [2024-06-21 19:14:24,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-21 19:14:24,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:24,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:24,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-21 19:14:24,879 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:24,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:24,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1350025446, now seen corresponding path program 2 times [2024-06-21 19:14:24,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:24,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445181004] [2024-06-21 19:14:24,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:24,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:26,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:26,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:26,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445181004] [2024-06-21 19:14:26,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445181004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:26,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:26,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:26,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133475579] [2024-06-21 19:14:26,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:26,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:26,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:26,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:26,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:26,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:14:26,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 105 transitions, 881 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:26,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:26,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:14:26,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:26,818 INFO L124 PetriNetUnfolderBase]: 261/510 cut-off events. [2024-06-21 19:14:26,818 INFO L125 PetriNetUnfolderBase]: For 11057/11057 co-relation queries the response was YES. [2024-06-21 19:14:26,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2834 conditions, 510 events. 261/510 cut-off events. For 11057/11057 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2358 event pairs, 42 based on Foata normal form. 1/510 useless extension candidates. Maximal degree in co-relation 2776. Up to 398 conditions per place. [2024-06-21 19:14:26,823 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 84 selfloop transitions, 37 changer transitions 0/125 dead transitions. [2024-06-21 19:14:26,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 125 transitions, 1290 flow [2024-06-21 19:14:26,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:26,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:26,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-21 19:14:26,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-21 19:14:26,826 INFO L175 Difference]: Start difference. First operand has 127 places, 105 transitions, 881 flow. Second operand 10 states and 134 transitions. [2024-06-21 19:14:26,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 125 transitions, 1290 flow [2024-06-21 19:14:26,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 125 transitions, 1217 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-21 19:14:26,843 INFO L231 Difference]: Finished difference. Result has 131 places, 112 transitions, 981 flow [2024-06-21 19:14:26,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=981, PETRI_PLACES=131, PETRI_TRANSITIONS=112} [2024-06-21 19:14:26,844 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 100 predicate places. [2024-06-21 19:14:26,844 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 112 transitions, 981 flow [2024-06-21 19:14:26,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:26,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:26,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:26,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-21 19:14:26,845 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:26,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:26,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1105527510, now seen corresponding path program 3 times [2024-06-21 19:14:26,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:26,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320744642] [2024-06-21 19:14:26,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:26,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:28,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:28,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:28,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320744642] [2024-06-21 19:14:28,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320744642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:28,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:28,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:28,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094948968] [2024-06-21 19:14:28,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:28,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:28,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:28,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:28,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:28,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:14:28,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 112 transitions, 981 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:28,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:28,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:14:28,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:28,941 INFO L124 PetriNetUnfolderBase]: 267/520 cut-off events. [2024-06-21 19:14:28,941 INFO L125 PetriNetUnfolderBase]: For 11877/11877 co-relation queries the response was YES. [2024-06-21 19:14:28,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2967 conditions, 520 events. 267/520 cut-off events. For 11877/11877 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2435 event pairs, 46 based on Foata normal form. 1/520 useless extension candidates. Maximal degree in co-relation 2907. Up to 404 conditions per place. [2024-06-21 19:14:28,946 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 87 selfloop transitions, 38 changer transitions 0/129 dead transitions. [2024-06-21 19:14:28,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 129 transitions, 1365 flow [2024-06-21 19:14:28,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:28,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:28,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-21 19:14:28,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-21 19:14:28,948 INFO L175 Difference]: Start difference. First operand has 131 places, 112 transitions, 981 flow. Second operand 10 states and 135 transitions. [2024-06-21 19:14:28,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 129 transitions, 1365 flow [2024-06-21 19:14:28,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 129 transitions, 1312 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-21 19:14:28,967 INFO L231 Difference]: Finished difference. Result has 138 places, 116 transitions, 1061 flow [2024-06-21 19:14:28,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1061, PETRI_PLACES=138, PETRI_TRANSITIONS=116} [2024-06-21 19:14:28,968 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 107 predicate places. [2024-06-21 19:14:28,968 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 116 transitions, 1061 flow [2024-06-21 19:14:28,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:28,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:28,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:28,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-21 19:14:28,969 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:28,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:28,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1111956600, now seen corresponding path program 4 times [2024-06-21 19:14:28,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:28,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795044721] [2024-06-21 19:14:28,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:28,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:30,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:30,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:30,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795044721] [2024-06-21 19:14:30,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795044721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:30,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:30,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:30,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902587570] [2024-06-21 19:14:30,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:30,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:30,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:30,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:30,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:30,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:14:30,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 116 transitions, 1061 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:30,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:30,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:14:30,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:31,220 INFO L124 PetriNetUnfolderBase]: 270/525 cut-off events. [2024-06-21 19:14:31,221 INFO L125 PetriNetUnfolderBase]: For 12360/12360 co-relation queries the response was YES. [2024-06-21 19:14:31,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3036 conditions, 525 events. 270/525 cut-off events. For 12360/12360 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2462 event pairs, 44 based on Foata normal form. 1/525 useless extension candidates. Maximal degree in co-relation 2973. Up to 408 conditions per place. [2024-06-21 19:14:31,226 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 89 selfloop transitions, 39 changer transitions 0/132 dead transitions. [2024-06-21 19:14:31,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 132 transitions, 1454 flow [2024-06-21 19:14:31,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:31,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:31,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-21 19:14:31,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-21 19:14:31,228 INFO L175 Difference]: Start difference. First operand has 138 places, 116 transitions, 1061 flow. Second operand 10 states and 136 transitions. [2024-06-21 19:14:31,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 132 transitions, 1454 flow [2024-06-21 19:14:31,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 132 transitions, 1375 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-21 19:14:31,260 INFO L231 Difference]: Finished difference. Result has 143 places, 119 transitions, 1122 flow [2024-06-21 19:14:31,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1122, PETRI_PLACES=143, PETRI_TRANSITIONS=119} [2024-06-21 19:14:31,260 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-21 19:14:31,260 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 119 transitions, 1122 flow [2024-06-21 19:14:31,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:31,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:31,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:31,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-21 19:14:31,261 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:31,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:31,262 INFO L85 PathProgramCache]: Analyzing trace with hash 649115448, now seen corresponding path program 4 times [2024-06-21 19:14:31,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:31,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694118565] [2024-06-21 19:14:31,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:31,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:32,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:32,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:32,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694118565] [2024-06-21 19:14:32,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694118565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:32,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:32,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:14:32,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102221622] [2024-06-21 19:14:32,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:32,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:14:32,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:32,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:14:32,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:14:32,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:14:32,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 119 transitions, 1122 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-21 19:14:32,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:32,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:14:32,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:32,698 INFO L124 PetriNetUnfolderBase]: 255/524 cut-off events. [2024-06-21 19:14:32,698 INFO L125 PetriNetUnfolderBase]: For 13977/13977 co-relation queries the response was YES. [2024-06-21 19:14:32,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3059 conditions, 524 events. 255/524 cut-off events. For 13977/13977 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2622 event pairs, 40 based on Foata normal form. 2/521 useless extension candidates. Maximal degree in co-relation 2994. Up to 399 conditions per place. [2024-06-21 19:14:32,702 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 105 selfloop transitions, 20 changer transitions 0/137 dead transitions. [2024-06-21 19:14:32,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 137 transitions, 1442 flow [2024-06-21 19:14:32,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:32,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:32,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-06-21 19:14:32,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-21 19:14:32,703 INFO L175 Difference]: Start difference. First operand has 143 places, 119 transitions, 1122 flow. Second operand 9 states and 129 transitions. [2024-06-21 19:14:32,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 137 transitions, 1442 flow [2024-06-21 19:14:32,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 137 transitions, 1361 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-21 19:14:32,725 INFO L231 Difference]: Finished difference. Result has 147 places, 121 transitions, 1119 flow [2024-06-21 19:14:32,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1119, PETRI_PLACES=147, PETRI_TRANSITIONS=121} [2024-06-21 19:14:32,725 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-21 19:14:32,725 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 121 transitions, 1119 flow [2024-06-21 19:14:32,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-21 19:14:32,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:32,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:32,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-21 19:14:32,726 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:32,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:32,726 INFO L85 PathProgramCache]: Analyzing trace with hash -374698640, now seen corresponding path program 5 times [2024-06-21 19:14:32,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:32,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118454002] [2024-06-21 19:14:32,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:32,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:33,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:33,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:33,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118454002] [2024-06-21 19:14:33,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118454002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:33,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:33,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:14:33,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096896771] [2024-06-21 19:14:33,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:33,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:14:33,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:33,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:14:33,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:14:33,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:14:33,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 121 transitions, 1119 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-21 19:14:33,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:33,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:14:33,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:34,234 INFO L124 PetriNetUnfolderBase]: 262/540 cut-off events. [2024-06-21 19:14:34,234 INFO L125 PetriNetUnfolderBase]: For 16196/16196 co-relation queries the response was YES. [2024-06-21 19:14:34,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3179 conditions, 540 events. 262/540 cut-off events. For 16196/16196 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2729 event pairs, 44 based on Foata normal form. 4/539 useless extension candidates. Maximal degree in co-relation 3113. Up to 415 conditions per place. [2024-06-21 19:14:34,239 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 102 selfloop transitions, 22 changer transitions 0/136 dead transitions. [2024-06-21 19:14:34,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 136 transitions, 1427 flow [2024-06-21 19:14:34,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:34,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:34,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-21 19:14:34,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-21 19:14:34,241 INFO L175 Difference]: Start difference. First operand has 147 places, 121 transitions, 1119 flow. Second operand 9 states and 128 transitions. [2024-06-21 19:14:34,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 136 transitions, 1427 flow [2024-06-21 19:14:34,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 136 transitions, 1359 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-21 19:14:34,281 INFO L231 Difference]: Finished difference. Result has 149 places, 122 transitions, 1126 flow [2024-06-21 19:14:34,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1126, PETRI_PLACES=149, PETRI_TRANSITIONS=122} [2024-06-21 19:14:34,282 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2024-06-21 19:14:34,282 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 122 transitions, 1126 flow [2024-06-21 19:14:34,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-21 19:14:34,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:34,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:34,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-21 19:14:34,283 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:34,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:34,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1764622286, now seen corresponding path program 6 times [2024-06-21 19:14:34,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:34,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868373459] [2024-06-21 19:14:34,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:34,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:35,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:35,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:35,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868373459] [2024-06-21 19:14:35,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868373459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:35,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:35,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:14:35,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437826856] [2024-06-21 19:14:35,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:35,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:14:35,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:35,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:14:35,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:14:35,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-21 19:14:35,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 122 transitions, 1126 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 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) [2024-06-21 19:14:35,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:35,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-21 19:14:35,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:35,538 INFO L124 PetriNetUnfolderBase]: 242/533 cut-off events. [2024-06-21 19:14:35,538 INFO L125 PetriNetUnfolderBase]: For 15652/15655 co-relation queries the response was YES. [2024-06-21 19:14:35,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3047 conditions, 533 events. 242/533 cut-off events. For 15652/15655 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2848 event pairs, 15 based on Foata normal form. 4/535 useless extension candidates. Maximal degree in co-relation 2981. Up to 300 conditions per place. [2024-06-21 19:14:35,542 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 80 selfloop transitions, 23 changer transitions 0/137 dead transitions. [2024-06-21 19:14:35,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 137 transitions, 1398 flow [2024-06-21 19:14:35,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:14:35,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:14:35,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-21 19:14:35,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-06-21 19:14:35,544 INFO L175 Difference]: Start difference. First operand has 149 places, 122 transitions, 1126 flow. Second operand 8 states and 126 transitions. [2024-06-21 19:14:35,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 137 transitions, 1398 flow [2024-06-21 19:14:35,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 137 transitions, 1315 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-21 19:14:35,571 INFO L231 Difference]: Finished difference. Result has 149 places, 124 transitions, 1134 flow [2024-06-21 19:14:35,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1134, PETRI_PLACES=149, PETRI_TRANSITIONS=124} [2024-06-21 19:14:35,572 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2024-06-21 19:14:35,572 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 124 transitions, 1134 flow [2024-06-21 19:14:35,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 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) [2024-06-21 19:14:35,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:35,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:35,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-21 19:14:35,573 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:35,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:35,573 INFO L85 PathProgramCache]: Analyzing trace with hash -374516050, now seen corresponding path program 5 times [2024-06-21 19:14:35,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:35,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132877975] [2024-06-21 19:14:35,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:35,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:36,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:36,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:36,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132877975] [2024-06-21 19:14:36,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132877975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:36,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:36,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:36,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705178730] [2024-06-21 19:14:36,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:36,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:36,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:36,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:36,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:37,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:14:37,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 124 transitions, 1134 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:37,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:37,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:14:37,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:37,410 INFO L124 PetriNetUnfolderBase]: 302/595 cut-off events. [2024-06-21 19:14:37,411 INFO L125 PetriNetUnfolderBase]: For 15368/15368 co-relation queries the response was YES. [2024-06-21 19:14:37,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3344 conditions, 595 events. 302/595 cut-off events. For 15368/15368 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2946 event pairs, 64 based on Foata normal form. 1/595 useless extension candidates. Maximal degree in co-relation 3278. Up to 512 conditions per place. [2024-06-21 19:14:37,415 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 110 selfloop transitions, 24 changer transitions 0/138 dead transitions. [2024-06-21 19:14:37,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 138 transitions, 1438 flow [2024-06-21 19:14:37,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:37,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:37,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-21 19:14:37,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-21 19:14:37,418 INFO L175 Difference]: Start difference. First operand has 149 places, 124 transitions, 1134 flow. Second operand 10 states and 131 transitions. [2024-06-21 19:14:37,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 138 transitions, 1438 flow [2024-06-21 19:14:37,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 138 transitions, 1364 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-21 19:14:37,455 INFO L231 Difference]: Finished difference. Result has 154 places, 124 transitions, 1113 flow [2024-06-21 19:14:37,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1113, PETRI_PLACES=154, PETRI_TRANSITIONS=124} [2024-06-21 19:14:37,456 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-06-21 19:14:37,456 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 124 transitions, 1113 flow [2024-06-21 19:14:37,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:37,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:37,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:37,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-21 19:14:37,456 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:37,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:37,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1105281432, now seen corresponding path program 1 times [2024-06-21 19:14:37,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:37,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600470133] [2024-06-21 19:14:37,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:37,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:38,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:38,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:38,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600470133] [2024-06-21 19:14:38,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600470133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:38,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:38,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:14:38,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873534744] [2024-06-21 19:14:38,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:38,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:14:38,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:38,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:14:38,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:14:38,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:14:38,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 124 transitions, 1113 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:38,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:38,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:14:38,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:39,265 INFO L124 PetriNetUnfolderBase]: 305/600 cut-off events. [2024-06-21 19:14:39,265 INFO L125 PetriNetUnfolderBase]: For 14293/14293 co-relation queries the response was YES. [2024-06-21 19:14:39,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3293 conditions, 600 events. 305/600 cut-off events. For 14293/14293 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2998 event pairs, 73 based on Foata normal form. 1/600 useless extension candidates. Maximal degree in co-relation 3227. Up to 516 conditions per place. [2024-06-21 19:14:39,270 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 108 selfloop transitions, 25 changer transitions 0/137 dead transitions. [2024-06-21 19:14:39,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 137 transitions, 1429 flow [2024-06-21 19:14:39,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:39,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:39,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-21 19:14:39,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-21 19:14:39,272 INFO L175 Difference]: Start difference. First operand has 154 places, 124 transitions, 1113 flow. Second operand 9 states and 128 transitions. [2024-06-21 19:14:39,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 137 transitions, 1429 flow [2024-06-21 19:14:39,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 137 transitions, 1310 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-21 19:14:39,300 INFO L231 Difference]: Finished difference. Result has 150 places, 126 transitions, 1077 flow [2024-06-21 19:14:39,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=994, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1077, PETRI_PLACES=150, PETRI_TRANSITIONS=126} [2024-06-21 19:14:39,301 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 119 predicate places. [2024-06-21 19:14:39,301 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 126 transitions, 1077 flow [2024-06-21 19:14:39,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:39,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:39,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:39,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-21 19:14:39,301 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:39,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:39,302 INFO L85 PathProgramCache]: Analyzing trace with hash 565170548, now seen corresponding path program 7 times [2024-06-21 19:14:39,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:39,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338973140] [2024-06-21 19:14:39,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:39,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:40,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:40,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:40,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338973140] [2024-06-21 19:14:40,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338973140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:40,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:40,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:14:40,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544804080] [2024-06-21 19:14:40,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:40,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:14:40,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:40,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:14:40,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:14:40,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:14:40,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 126 transitions, 1077 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-21 19:14:40,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:40,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:14:40,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:41,089 INFO L124 PetriNetUnfolderBase]: 274/567 cut-off events. [2024-06-21 19:14:41,089 INFO L125 PetriNetUnfolderBase]: For 14410/14410 co-relation queries the response was YES. [2024-06-21 19:14:41,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3113 conditions, 567 events. 274/567 cut-off events. For 14410/14410 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2958 event pairs, 45 based on Foata normal form. 2/562 useless extension candidates. Maximal degree in co-relation 3050. Up to 446 conditions per place. [2024-06-21 19:14:41,094 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 105 selfloop transitions, 20 changer transitions 0/137 dead transitions. [2024-06-21 19:14:41,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 137 transitions, 1377 flow [2024-06-21 19:14:41,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:41,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:41,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-21 19:14:41,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340277777777778 [2024-06-21 19:14:41,101 INFO L175 Difference]: Start difference. First operand has 150 places, 126 transitions, 1077 flow. Second operand 9 states and 125 transitions. [2024-06-21 19:14:41,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 137 transitions, 1377 flow [2024-06-21 19:14:41,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 137 transitions, 1310 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-21 19:14:41,132 INFO L231 Difference]: Finished difference. Result has 152 places, 127 transitions, 1080 flow [2024-06-21 19:14:41,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1080, PETRI_PLACES=152, PETRI_TRANSITIONS=127} [2024-06-21 19:14:41,133 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 121 predicate places. [2024-06-21 19:14:41,133 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 127 transitions, 1080 flow [2024-06-21 19:14:41,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-21 19:14:41,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:41,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:41,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-21 19:14:41,134 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:41,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:41,134 INFO L85 PathProgramCache]: Analyzing trace with hash 565052438, now seen corresponding path program 8 times [2024-06-21 19:14:41,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:41,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325353242] [2024-06-21 19:14:41,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:41,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:41,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:42,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:42,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:42,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325353242] [2024-06-21 19:14:42,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325353242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:42,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:42,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:14:42,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884640342] [2024-06-21 19:14:42,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:42,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:14:42,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:42,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:14:42,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:14:42,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:14:42,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 127 transitions, 1080 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-21 19:14:42,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:42,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:14:42,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:42,716 INFO L124 PetriNetUnfolderBase]: 279/582 cut-off events. [2024-06-21 19:14:42,716 INFO L125 PetriNetUnfolderBase]: For 16773/16773 co-relation queries the response was YES. [2024-06-21 19:14:42,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3264 conditions, 582 events. 279/582 cut-off events. For 16773/16773 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3062 event pairs, 44 based on Foata normal form. 2/577 useless extension candidates. Maximal degree in co-relation 3199. Up to 452 conditions per place. [2024-06-21 19:14:42,721 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 109 selfloop transitions, 19 changer transitions 0/140 dead transitions. [2024-06-21 19:14:42,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 140 transitions, 1394 flow [2024-06-21 19:14:42,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:42,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:42,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-21 19:14:42,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 19:14:42,723 INFO L175 Difference]: Start difference. First operand has 152 places, 127 transitions, 1080 flow. Second operand 9 states and 126 transitions. [2024-06-21 19:14:42,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 140 transitions, 1394 flow [2024-06-21 19:14:42,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 140 transitions, 1313 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-21 19:14:42,765 INFO L231 Difference]: Finished difference. Result has 153 places, 128 transitions, 1069 flow [2024-06-21 19:14:42,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1069, PETRI_PLACES=153, PETRI_TRANSITIONS=128} [2024-06-21 19:14:42,766 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 122 predicate places. [2024-06-21 19:14:42,766 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 128 transitions, 1069 flow [2024-06-21 19:14:42,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-21 19:14:42,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:42,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:42,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-21 19:14:42,767 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:42,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:42,767 INFO L85 PathProgramCache]: Analyzing trace with hash 169256866, now seen corresponding path program 9 times [2024-06-21 19:14:42,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:42,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022501109] [2024-06-21 19:14:42,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:42,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:44,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:44,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:44,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022501109] [2024-06-21 19:14:44,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022501109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:44,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:44,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:14:44,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119499307] [2024-06-21 19:14:44,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:44,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:14:44,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:44,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:14:44,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:14:44,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:14:44,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 128 transitions, 1069 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-21 19:14:44,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:44,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:14:44,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:45,141 INFO L124 PetriNetUnfolderBase]: 283/594 cut-off events. [2024-06-21 19:14:45,141 INFO L125 PetriNetUnfolderBase]: For 19089/19089 co-relation queries the response was YES. [2024-06-21 19:14:45,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3307 conditions, 594 events. 283/594 cut-off events. For 19089/19089 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3152 event pairs, 46 based on Foata normal form. 4/591 useless extension candidates. Maximal degree in co-relation 3243. Up to 458 conditions per place. [2024-06-21 19:14:45,145 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 102 selfloop transitions, 24 changer transitions 0/138 dead transitions. [2024-06-21 19:14:45,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 138 transitions, 1371 flow [2024-06-21 19:14:45,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:45,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:45,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-21 19:14:45,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 19:14:45,147 INFO L175 Difference]: Start difference. First operand has 153 places, 128 transitions, 1069 flow. Second operand 9 states and 126 transitions. [2024-06-21 19:14:45,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 138 transitions, 1371 flow [2024-06-21 19:14:45,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 138 transitions, 1309 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-21 19:14:45,187 INFO L231 Difference]: Finished difference. Result has 155 places, 129 transitions, 1089 flow [2024-06-21 19:14:45,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1089, PETRI_PLACES=155, PETRI_TRANSITIONS=129} [2024-06-21 19:14:45,188 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 124 predicate places. [2024-06-21 19:14:45,188 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 129 transitions, 1089 flow [2024-06-21 19:14:45,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-21 19:14:45,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:45,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:45,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-21 19:14:45,189 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:45,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:45,189 INFO L85 PathProgramCache]: Analyzing trace with hash -111668478, now seen corresponding path program 6 times [2024-06-21 19:14:45,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:45,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484704477] [2024-06-21 19:14:45,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:45,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:46,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:46,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:46,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484704477] [2024-06-21 19:14:46,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484704477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:46,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:46,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:46,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611801469] [2024-06-21 19:14:46,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:46,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:46,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:46,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:46,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:46,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:14:46,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 129 transitions, 1089 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:46,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:46,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:14:46,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:47,100 INFO L124 PetriNetUnfolderBase]: 332/651 cut-off events. [2024-06-21 19:14:47,100 INFO L125 PetriNetUnfolderBase]: For 17884/17884 co-relation queries the response was YES. [2024-06-21 19:14:47,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3573 conditions, 651 events. 332/651 cut-off events. For 17884/17884 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3317 event pairs, 56 based on Foata normal form. 1/647 useless extension candidates. Maximal degree in co-relation 3509. Up to 570 conditions per place. [2024-06-21 19:14:47,104 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 116 selfloop transitions, 23 changer transitions 0/143 dead transitions. [2024-06-21 19:14:47,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 143 transitions, 1441 flow [2024-06-21 19:14:47,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:47,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:47,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-21 19:14:47,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-21 19:14:47,113 INFO L175 Difference]: Start difference. First operand has 155 places, 129 transitions, 1089 flow. Second operand 10 states and 128 transitions. [2024-06-21 19:14:47,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 143 transitions, 1441 flow [2024-06-21 19:14:47,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 143 transitions, 1367 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-21 19:14:47,163 INFO L231 Difference]: Finished difference. Result has 159 places, 133 transitions, 1123 flow [2024-06-21 19:14:47,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1123, PETRI_PLACES=159, PETRI_TRANSITIONS=133} [2024-06-21 19:14:47,165 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 128 predicate places. [2024-06-21 19:14:47,165 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 133 transitions, 1123 flow [2024-06-21 19:14:47,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:47,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:47,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:47,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-21 19:14:47,166 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:47,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:47,166 INFO L85 PathProgramCache]: Analyzing trace with hash 175690916, now seen corresponding path program 7 times [2024-06-21 19:14:47,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:47,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771098431] [2024-06-21 19:14:47,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:47,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:48,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:48,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:48,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771098431] [2024-06-21 19:14:48,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771098431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:48,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:48,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:48,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993978796] [2024-06-21 19:14:48,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:48,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:48,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:48,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:48,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:48,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:14:48,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 133 transitions, 1123 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:48,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:48,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:14:48,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:49,088 INFO L124 PetriNetUnfolderBase]: 348/681 cut-off events. [2024-06-21 19:14:49,089 INFO L125 PetriNetUnfolderBase]: For 20345/20345 co-relation queries the response was YES. [2024-06-21 19:14:49,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3878 conditions, 681 events. 348/681 cut-off events. For 20345/20345 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3534 event pairs, 58 based on Foata normal form. 1/677 useless extension candidates. Maximal degree in co-relation 3812. Up to 567 conditions per place. [2024-06-21 19:14:49,093 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 114 selfloop transitions, 36 changer transitions 0/154 dead transitions. [2024-06-21 19:14:49,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 154 transitions, 1731 flow [2024-06-21 19:14:49,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:49,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:49,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-21 19:14:49,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 19:14:49,095 INFO L175 Difference]: Start difference. First operand has 159 places, 133 transitions, 1123 flow. Second operand 9 states and 126 transitions. [2024-06-21 19:14:49,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 154 transitions, 1731 flow [2024-06-21 19:14:49,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 154 transitions, 1656 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-21 19:14:49,151 INFO L231 Difference]: Finished difference. Result has 163 places, 143 transitions, 1276 flow [2024-06-21 19:14:49,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1276, PETRI_PLACES=163, PETRI_TRANSITIONS=143} [2024-06-21 19:14:49,152 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 132 predicate places. [2024-06-21 19:14:49,152 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 143 transitions, 1276 flow [2024-06-21 19:14:49,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:49,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:49,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:49,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-21 19:14:49,153 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:49,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:49,153 INFO L85 PathProgramCache]: Analyzing trace with hash -375234112, now seen corresponding path program 8 times [2024-06-21 19:14:49,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:49,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452571090] [2024-06-21 19:14:49,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:49,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:50,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:50,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:50,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452571090] [2024-06-21 19:14:50,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452571090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:50,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:50,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:50,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996451231] [2024-06-21 19:14:50,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:50,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:50,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:50,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:50,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:50,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:14:50,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 143 transitions, 1276 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:50,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:50,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:14:50,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:50,996 INFO L124 PetriNetUnfolderBase]: 346/678 cut-off events. [2024-06-21 19:14:50,996 INFO L125 PetriNetUnfolderBase]: For 20926/20926 co-relation queries the response was YES. [2024-06-21 19:14:50,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3934 conditions, 678 events. 346/678 cut-off events. For 20926/20926 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3517 event pairs, 58 based on Foata normal form. 1/674 useless extension candidates. Maximal degree in co-relation 3865. Up to 565 conditions per place. [2024-06-21 19:14:51,001 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 111 selfloop transitions, 38 changer transitions 0/153 dead transitions. [2024-06-21 19:14:51,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 153 transitions, 1676 flow [2024-06-21 19:14:51,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:51,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:51,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-21 19:14:51,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-21 19:14:51,010 INFO L175 Difference]: Start difference. First operand has 163 places, 143 transitions, 1276 flow. Second operand 10 states and 132 transitions. [2024-06-21 19:14:51,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 153 transitions, 1676 flow [2024-06-21 19:14:51,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 153 transitions, 1583 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-06-21 19:14:51,065 INFO L231 Difference]: Finished difference. Result has 170 places, 143 transitions, 1264 flow [2024-06-21 19:14:51,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1183, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1264, PETRI_PLACES=170, PETRI_TRANSITIONS=143} [2024-06-21 19:14:51,066 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-21 19:14:51,067 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 143 transitions, 1264 flow [2024-06-21 19:14:51,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:51,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:51,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:51,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-21 19:14:51,070 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:51,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:51,072 INFO L85 PathProgramCache]: Analyzing trace with hash 169261826, now seen corresponding path program 9 times [2024-06-21 19:14:51,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:51,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349377849] [2024-06-21 19:14:51,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:51,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:52,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:52,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:52,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349377849] [2024-06-21 19:14:52,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349377849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:52,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:52,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:52,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013199459] [2024-06-21 19:14:52,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:52,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:52,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:52,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:52,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:52,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:14:52,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 143 transitions, 1264 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:52,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:52,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:14:52,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:53,246 INFO L124 PetriNetUnfolderBase]: 344/675 cut-off events. [2024-06-21 19:14:53,246 INFO L125 PetriNetUnfolderBase]: For 20405/20405 co-relation queries the response was YES. [2024-06-21 19:14:53,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3811 conditions, 675 events. 344/675 cut-off events. For 20405/20405 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3495 event pairs, 56 based on Foata normal form. 1/671 useless extension candidates. Maximal degree in co-relation 3740. Up to 563 conditions per place. [2024-06-21 19:14:53,250 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 113 selfloop transitions, 35 changer transitions 0/152 dead transitions. [2024-06-21 19:14:53,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 152 transitions, 1582 flow [2024-06-21 19:14:53,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:53,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:53,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-21 19:14:53,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-21 19:14:53,252 INFO L175 Difference]: Start difference. First operand has 170 places, 143 transitions, 1264 flow. Second operand 10 states and 133 transitions. [2024-06-21 19:14:53,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 152 transitions, 1582 flow [2024-06-21 19:14:53,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 152 transitions, 1511 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-21 19:14:53,292 INFO L231 Difference]: Finished difference. Result has 174 places, 143 transitions, 1268 flow [2024-06-21 19:14:53,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1193, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1268, PETRI_PLACES=174, PETRI_TRANSITIONS=143} [2024-06-21 19:14:53,292 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 143 predicate places. [2024-06-21 19:14:53,292 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 143 transitions, 1268 flow [2024-06-21 19:14:53,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:53,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:53,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:53,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-21 19:14:53,293 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:53,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:53,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1724370572, now seen corresponding path program 10 times [2024-06-21 19:14:53,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:53,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127645012] [2024-06-21 19:14:53,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:53,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:54,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:54,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:54,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127645012] [2024-06-21 19:14:54,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127645012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:54,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:54,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:14:54,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911104116] [2024-06-21 19:14:54,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:54,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:14:54,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:54,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:14:54,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:14:54,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:14:54,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 143 transitions, 1268 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-21 19:14:54,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:54,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:14:54,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:55,318 INFO L124 PetriNetUnfolderBase]: 297/618 cut-off events. [2024-06-21 19:14:55,318 INFO L125 PetriNetUnfolderBase]: For 20428/20428 co-relation queries the response was YES. [2024-06-21 19:14:55,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3408 conditions, 618 events. 297/618 cut-off events. For 20428/20428 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3335 event pairs, 48 based on Foata normal form. 4/612 useless extension candidates. Maximal degree in co-relation 3336. Up to 444 conditions per place. [2024-06-21 19:14:55,321 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 90 selfloop transitions, 47 changer transitions 0/151 dead transitions. [2024-06-21 19:14:55,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 151 transitions, 1560 flow [2024-06-21 19:14:55,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:55,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:55,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-21 19:14:55,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340277777777778 [2024-06-21 19:14:55,322 INFO L175 Difference]: Start difference. First operand has 174 places, 143 transitions, 1268 flow. Second operand 9 states and 125 transitions. [2024-06-21 19:14:55,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 151 transitions, 1560 flow [2024-06-21 19:14:55,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 151 transitions, 1456 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-21 19:14:55,360 INFO L231 Difference]: Finished difference. Result has 172 places, 143 transitions, 1262 flow [2024-06-21 19:14:55,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1262, PETRI_PLACES=172, PETRI_TRANSITIONS=143} [2024-06-21 19:14:55,360 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-21 19:14:55,360 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 143 transitions, 1262 flow [2024-06-21 19:14:55,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-21 19:14:55,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:55,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:55,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-21 19:14:55,361 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:55,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:55,362 INFO L85 PathProgramCache]: Analyzing trace with hash -2071018284, now seen corresponding path program 10 times [2024-06-21 19:14:55,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:55,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153651185] [2024-06-21 19:14:55,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:55,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:56,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:56,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:56,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153651185] [2024-06-21 19:14:56,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153651185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:56,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:56,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:56,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399713751] [2024-06-21 19:14:56,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:56,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:56,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:56,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:56,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:57,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:14:57,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 143 transitions, 1262 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:57,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:57,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:14:57,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:57,396 INFO L124 PetriNetUnfolderBase]: 341/670 cut-off events. [2024-06-21 19:14:57,396 INFO L125 PetriNetUnfolderBase]: For 18945/18945 co-relation queries the response was YES. [2024-06-21 19:14:57,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3665 conditions, 670 events. 341/670 cut-off events. For 18945/18945 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3505 event pairs, 64 based on Foata normal form. 1/665 useless extension candidates. Maximal degree in co-relation 3595. Up to 465 conditions per place. [2024-06-21 19:14:57,400 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 72 selfloop transitions, 82 changer transitions 0/158 dead transitions. [2024-06-21 19:14:57,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 158 transitions, 1767 flow [2024-06-21 19:14:57,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:57,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:57,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-21 19:14:57,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-21 19:14:57,401 INFO L175 Difference]: Start difference. First operand has 172 places, 143 transitions, 1262 flow. Second operand 10 states and 133 transitions. [2024-06-21 19:14:57,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 158 transitions, 1767 flow [2024-06-21 19:14:57,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 158 transitions, 1646 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-21 19:14:57,436 INFO L231 Difference]: Finished difference. Result has 176 places, 149 transitions, 1431 flow [2024-06-21 19:14:57,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1431, PETRI_PLACES=176, PETRI_TRANSITIONS=149} [2024-06-21 19:14:57,437 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 145 predicate places. [2024-06-21 19:14:57,437 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 149 transitions, 1431 flow [2024-06-21 19:14:57,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:57,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:57,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:57,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-21 19:14:57,438 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:57,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:57,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1496054332, now seen corresponding path program 11 times [2024-06-21 19:14:57,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:57,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678110280] [2024-06-21 19:14:57,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:57,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:58,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:58,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:58,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678110280] [2024-06-21 19:14:58,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678110280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:58,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:58,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:58,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600270203] [2024-06-21 19:14:58,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:58,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:58,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:58,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:58,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:59,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:14:59,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 149 transitions, 1431 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:59,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:59,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:14:59,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:59,415 INFO L124 PetriNetUnfolderBase]: 352/690 cut-off events. [2024-06-21 19:14:59,415 INFO L125 PetriNetUnfolderBase]: For 20865/20865 co-relation queries the response was YES. [2024-06-21 19:14:59,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3981 conditions, 690 events. 352/690 cut-off events. For 20865/20865 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3634 event pairs, 64 based on Foata normal form. 1/685 useless extension candidates. Maximal degree in co-relation 3909. Up to 477 conditions per place. [2024-06-21 19:14:59,420 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 84 selfloop transitions, 77 changer transitions 0/165 dead transitions. [2024-06-21 19:14:59,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 165 transitions, 2045 flow [2024-06-21 19:14:59,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:14:59,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:14:59,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-21 19:14:59,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-21 19:14:59,421 INFO L175 Difference]: Start difference. First operand has 176 places, 149 transitions, 1431 flow. Second operand 10 states and 136 transitions. [2024-06-21 19:14:59,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 165 transitions, 2045 flow [2024-06-21 19:14:59,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 165 transitions, 1975 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-21 19:14:59,458 INFO L231 Difference]: Finished difference. Result has 183 places, 155 transitions, 1628 flow [2024-06-21 19:14:59,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1361, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1628, PETRI_PLACES=183, PETRI_TRANSITIONS=155} [2024-06-21 19:14:59,459 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-21 19:14:59,459 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 155 transitions, 1628 flow [2024-06-21 19:14:59,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:59,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:59,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:59,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-21 19:14:59,459 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:14:59,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:59,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1724192632, now seen corresponding path program 12 times [2024-06-21 19:14:59,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:59,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808114677] [2024-06-21 19:14:59,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:59,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:00,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:00,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:00,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808114677] [2024-06-21 19:15:00,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808114677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:00,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:00,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:00,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638008405] [2024-06-21 19:15:00,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:00,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:00,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:00,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:00,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:01,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:15:01,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 155 transitions, 1628 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:01,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:01,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:15:01,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:01,488 INFO L124 PetriNetUnfolderBase]: 363/710 cut-off events. [2024-06-21 19:15:01,489 INFO L125 PetriNetUnfolderBase]: For 22592/22592 co-relation queries the response was YES. [2024-06-21 19:15:01,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4181 conditions, 710 events. 363/710 cut-off events. For 22592/22592 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3770 event pairs, 64 based on Foata normal form. 1/705 useless extension candidates. Maximal degree in co-relation 4106. Up to 489 conditions per place. [2024-06-21 19:15:01,493 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 93 selfloop transitions, 75 changer transitions 0/172 dead transitions. [2024-06-21 19:15:01,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 172 transitions, 2362 flow [2024-06-21 19:15:01,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:01,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:01,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-21 19:15:01,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-21 19:15:01,497 INFO L175 Difference]: Start difference. First operand has 183 places, 155 transitions, 1628 flow. Second operand 10 states and 139 transitions. [2024-06-21 19:15:01,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 172 transitions, 2362 flow [2024-06-21 19:15:01,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 172 transitions, 2222 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-21 19:15:01,546 INFO L231 Difference]: Finished difference. Result has 189 places, 161 transitions, 1761 flow [2024-06-21 19:15:01,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1493, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1761, PETRI_PLACES=189, PETRI_TRANSITIONS=161} [2024-06-21 19:15:01,547 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-21 19:15:01,547 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 161 transitions, 1761 flow [2024-06-21 19:15:01,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:01,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:01,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:01,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-21 19:15:01,548 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:01,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:01,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1717699372, now seen corresponding path program 13 times [2024-06-21 19:15:01,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:01,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011345990] [2024-06-21 19:15:01,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:01,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:03,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:03,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:03,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011345990] [2024-06-21 19:15:03,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011345990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:03,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:03,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:03,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490152844] [2024-06-21 19:15:03,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:03,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:03,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:03,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:03,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:03,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:15:03,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 161 transitions, 1761 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:03,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:03,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:15:03,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:03,593 INFO L124 PetriNetUnfolderBase]: 361/707 cut-off events. [2024-06-21 19:15:03,593 INFO L125 PetriNetUnfolderBase]: For 22553/22553 co-relation queries the response was YES. [2024-06-21 19:15:03,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4115 conditions, 707 events. 361/707 cut-off events. For 22553/22553 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3746 event pairs, 60 based on Foata normal form. 1/702 useless extension candidates. Maximal degree in co-relation 4038. Up to 487 conditions per place. [2024-06-21 19:15:03,598 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 91 selfloop transitions, 76 changer transitions 0/171 dead transitions. [2024-06-21 19:15:03,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 171 transitions, 2297 flow [2024-06-21 19:15:03,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:03,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:03,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-21 19:15:03,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-21 19:15:03,599 INFO L175 Difference]: Start difference. First operand has 189 places, 161 transitions, 1761 flow. Second operand 10 states and 137 transitions. [2024-06-21 19:15:03,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 171 transitions, 2297 flow [2024-06-21 19:15:03,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 171 transitions, 1979 flow, removed 41 selfloop flow, removed 11 redundant places. [2024-06-21 19:15:03,646 INFO L231 Difference]: Finished difference. Result has 188 places, 161 transitions, 1600 flow [2024-06-21 19:15:03,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1443, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1600, PETRI_PLACES=188, PETRI_TRANSITIONS=161} [2024-06-21 19:15:03,647 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2024-06-21 19:15:03,647 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 161 transitions, 1600 flow [2024-06-21 19:15:03,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:03,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:03,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:03,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-21 19:15:03,647 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:03,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:03,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1724365612, now seen corresponding path program 14 times [2024-06-21 19:15:03,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:03,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888180680] [2024-06-21 19:15:03,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:03,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:05,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:05,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:05,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888180680] [2024-06-21 19:15:05,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888180680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:05,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:05,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:05,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341039229] [2024-06-21 19:15:05,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:05,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:05,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:05,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:05,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:05,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:15:05,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 161 transitions, 1600 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:05,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:05,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:15:05,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:05,934 INFO L124 PetriNetUnfolderBase]: 359/704 cut-off events. [2024-06-21 19:15:05,934 INFO L125 PetriNetUnfolderBase]: For 21819/21819 co-relation queries the response was YES. [2024-06-21 19:15:05,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3849 conditions, 704 events. 359/704 cut-off events. For 21819/21819 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3719 event pairs, 64 based on Foata normal form. 1/699 useless extension candidates. Maximal degree in co-relation 3776. Up to 485 conditions per place. [2024-06-21 19:15:05,939 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 88 selfloop transitions, 78 changer transitions 0/170 dead transitions. [2024-06-21 19:15:05,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 170 transitions, 2044 flow [2024-06-21 19:15:05,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:05,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:05,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-21 19:15:05,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-21 19:15:05,940 INFO L175 Difference]: Start difference. First operand has 188 places, 161 transitions, 1600 flow. Second operand 10 states and 135 transitions. [2024-06-21 19:15:05,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 170 transitions, 2044 flow [2024-06-21 19:15:05,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 170 transitions, 1826 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-21 19:15:06,001 INFO L231 Difference]: Finished difference. Result has 190 places, 161 transitions, 1543 flow [2024-06-21 19:15:06,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1543, PETRI_PLACES=190, PETRI_TRANSITIONS=161} [2024-06-21 19:15:06,002 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-21 19:15:06,002 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 161 transitions, 1543 flow [2024-06-21 19:15:06,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:06,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:06,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:06,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-21 19:15:06,002 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:06,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:06,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1938611992, now seen corresponding path program 15 times [2024-06-21 19:15:06,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:06,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244215783] [2024-06-21 19:15:06,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:06,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:07,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:07,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:07,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244215783] [2024-06-21 19:15:07,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244215783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:07,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:07,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:07,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148130161] [2024-06-21 19:15:07,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:07,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:07,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:07,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:07,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:07,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:15:07,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 161 transitions, 1543 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:07,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:07,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:15:07,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:08,017 INFO L124 PetriNetUnfolderBase]: 357/701 cut-off events. [2024-06-21 19:15:08,017 INFO L125 PetriNetUnfolderBase]: For 21401/21401 co-relation queries the response was YES. [2024-06-21 19:15:08,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3747 conditions, 701 events. 357/701 cut-off events. For 21401/21401 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3708 event pairs, 58 based on Foata normal form. 1/696 useless extension candidates. Maximal degree in co-relation 3674. Up to 483 conditions per place. [2024-06-21 19:15:08,022 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 82 selfloop transitions, 83 changer transitions 0/169 dead transitions. [2024-06-21 19:15:08,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 169 transitions, 1891 flow [2024-06-21 19:15:08,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:08,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:08,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-21 19:15:08,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-21 19:15:08,023 INFO L175 Difference]: Start difference. First operand has 190 places, 161 transitions, 1543 flow. Second operand 10 states and 133 transitions. [2024-06-21 19:15:08,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 169 transitions, 1891 flow [2024-06-21 19:15:08,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 169 transitions, 1706 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 19:15:08,079 INFO L231 Difference]: Finished difference. Result has 191 places, 161 transitions, 1529 flow [2024-06-21 19:15:08,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1358, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1529, PETRI_PLACES=191, PETRI_TRANSITIONS=161} [2024-06-21 19:15:08,080 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-06-21 19:15:08,080 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 161 transitions, 1529 flow [2024-06-21 19:15:08,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:08,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:08,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:08,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-21 19:15:08,080 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:08,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:08,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1717690444, now seen corresponding path program 2 times [2024-06-21 19:15:08,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:08,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912576315] [2024-06-21 19:15:08,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:08,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:09,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:09,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:09,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912576315] [2024-06-21 19:15:09,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912576315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:09,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:09,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:09,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217470602] [2024-06-21 19:15:09,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:09,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:09,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:09,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:09,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:09,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:15:09,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 161 transitions, 1529 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:09,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:09,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:15:09,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:09,837 INFO L124 PetriNetUnfolderBase]: 360/708 cut-off events. [2024-06-21 19:15:09,837 INFO L125 PetriNetUnfolderBase]: For 22236/22236 co-relation queries the response was YES. [2024-06-21 19:15:09,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3780 conditions, 708 events. 360/708 cut-off events. For 22236/22236 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3762 event pairs, 70 based on Foata normal form. 1/706 useless extension candidates. Maximal degree in co-relation 3707. Up to 574 conditions per place. [2024-06-21 19:15:09,841 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 129 selfloop transitions, 39 changer transitions 0/172 dead transitions. [2024-06-21 19:15:09,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 172 transitions, 1913 flow [2024-06-21 19:15:09,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:15:09,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:15:09,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-21 19:15:09,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618055555555556 [2024-06-21 19:15:09,842 INFO L175 Difference]: Start difference. First operand has 191 places, 161 transitions, 1529 flow. Second operand 9 states and 133 transitions. [2024-06-21 19:15:09,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 172 transitions, 1913 flow [2024-06-21 19:15:09,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 172 transitions, 1753 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-21 19:15:09,900 INFO L231 Difference]: Finished difference. Result has 192 places, 163 transitions, 1484 flow [2024-06-21 19:15:09,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1484, PETRI_PLACES=192, PETRI_TRANSITIONS=163} [2024-06-21 19:15:09,900 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-21 19:15:09,900 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 163 transitions, 1484 flow [2024-06-21 19:15:09,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:09,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:09,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:09,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-21 19:15:09,901 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:09,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:09,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1938858070, now seen corresponding path program 3 times [2024-06-21 19:15:09,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:09,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804347492] [2024-06-21 19:15:09,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:09,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:11,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:11,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:11,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804347492] [2024-06-21 19:15:11,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804347492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:11,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:11,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:11,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91257183] [2024-06-21 19:15:11,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:11,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:11,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:11,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:11,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:11,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:15:11,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 163 transitions, 1484 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:11,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:11,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:15:11,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:11,624 INFO L124 PetriNetUnfolderBase]: 363/713 cut-off events. [2024-06-21 19:15:11,625 INFO L125 PetriNetUnfolderBase]: For 23030/23030 co-relation queries the response was YES. [2024-06-21 19:15:11,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3780 conditions, 713 events. 363/713 cut-off events. For 23030/23030 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3782 event pairs, 76 based on Foata normal form. 1/711 useless extension candidates. Maximal degree in co-relation 3707. Up to 579 conditions per place. [2024-06-21 19:15:11,631 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 129 selfloop transitions, 41 changer transitions 0/174 dead transitions. [2024-06-21 19:15:11,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 174 transitions, 1876 flow [2024-06-21 19:15:11,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:15:11,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:15:11,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-21 19:15:11,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-21 19:15:11,633 INFO L175 Difference]: Start difference. First operand has 192 places, 163 transitions, 1484 flow. Second operand 9 states and 132 transitions. [2024-06-21 19:15:11,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 174 transitions, 1876 flow [2024-06-21 19:15:11,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 174 transitions, 1777 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-21 19:15:11,708 INFO L231 Difference]: Finished difference. Result has 194 places, 165 transitions, 1508 flow [2024-06-21 19:15:11,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1385, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1508, PETRI_PLACES=194, PETRI_TRANSITIONS=165} [2024-06-21 19:15:11,708 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-06-21 19:15:11,708 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 165 transitions, 1508 flow [2024-06-21 19:15:11,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:11,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:11,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:11,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-21 19:15:11,709 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:11,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:11,710 INFO L85 PathProgramCache]: Analyzing trace with hash -2071009356, now seen corresponding path program 4 times [2024-06-21 19:15:11,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:11,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892477081] [2024-06-21 19:15:11,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:11,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:13,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:13,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:13,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892477081] [2024-06-21 19:15:13,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892477081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:13,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:13,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:13,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132903703] [2024-06-21 19:15:13,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:13,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:13,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:13,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:13,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:13,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:15:13,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 165 transitions, 1508 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:13,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:13,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:15:13,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:13,434 INFO L124 PetriNetUnfolderBase]: 366/718 cut-off events. [2024-06-21 19:15:13,434 INFO L125 PetriNetUnfolderBase]: For 23897/23897 co-relation queries the response was YES. [2024-06-21 19:15:13,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3847 conditions, 718 events. 366/718 cut-off events. For 23897/23897 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3836 event pairs, 76 based on Foata normal form. 1/716 useless extension candidates. Maximal degree in co-relation 3773. Up to 584 conditions per place. [2024-06-21 19:15:13,438 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 128 selfloop transitions, 44 changer transitions 0/176 dead transitions. [2024-06-21 19:15:13,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 176 transitions, 1908 flow [2024-06-21 19:15:13,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:15:13,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:15:13,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-06-21 19:15:13,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548611111111111 [2024-06-21 19:15:13,439 INFO L175 Difference]: Start difference. First operand has 194 places, 165 transitions, 1508 flow. Second operand 9 states and 131 transitions. [2024-06-21 19:15:13,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 176 transitions, 1908 flow [2024-06-21 19:15:13,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 176 transitions, 1801 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-21 19:15:13,505 INFO L231 Difference]: Finished difference. Result has 196 places, 167 transitions, 1534 flow [2024-06-21 19:15:13,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1534, PETRI_PLACES=196, PETRI_TRANSITIONS=167} [2024-06-21 19:15:13,505 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-21 19:15:13,505 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 167 transitions, 1534 flow [2024-06-21 19:15:13,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:13,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:13,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:13,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-21 19:15:13,506 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:13,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:13,506 INFO L85 PathProgramCache]: Analyzing trace with hash -2060890026, now seen corresponding path program 5 times [2024-06-21 19:15:13,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:13,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163208596] [2024-06-21 19:15:13,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:13,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:15,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:15,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:15,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163208596] [2024-06-21 19:15:15,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163208596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:15,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:15,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:15,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325301275] [2024-06-21 19:15:15,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:15,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:15,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:15,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:15,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:15,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:15:15,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 167 transitions, 1534 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:15,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:15,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:15:15,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:15,559 INFO L124 PetriNetUnfolderBase]: 369/726 cut-off events. [2024-06-21 19:15:15,559 INFO L125 PetriNetUnfolderBase]: For 24843/24843 co-relation queries the response was YES. [2024-06-21 19:15:15,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3919 conditions, 726 events. 369/726 cut-off events. For 24843/24843 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3860 event pairs, 121 based on Foata normal form. 1/726 useless extension candidates. Maximal degree in co-relation 3844. Up to 650 conditions per place. [2024-06-21 19:15:15,564 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 156 selfloop transitions, 18 changer transitions 0/178 dead transitions. [2024-06-21 19:15:15,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 178 transitions, 1942 flow [2024-06-21 19:15:15,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:15,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:15,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-21 19:15:15,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 19:15:15,565 INFO L175 Difference]: Start difference. First operand has 196 places, 167 transitions, 1534 flow. Second operand 10 states and 125 transitions. [2024-06-21 19:15:15,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 178 transitions, 1942 flow [2024-06-21 19:15:15,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 178 transitions, 1825 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-21 19:15:15,637 INFO L231 Difference]: Finished difference. Result has 199 places, 169 transitions, 1502 flow [2024-06-21 19:15:15,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1417, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1502, PETRI_PLACES=199, PETRI_TRANSITIONS=169} [2024-06-21 19:15:15,638 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-21 19:15:15,638 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 169 transitions, 1502 flow [2024-06-21 19:15:15,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:15,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:15,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:15,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-21 19:15:15,639 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:15,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:15,639 INFO L85 PathProgramCache]: Analyzing trace with hash -2060533836, now seen corresponding path program 6 times [2024-06-21 19:15:15,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:15,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468662580] [2024-06-21 19:15:15,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:15,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:17,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:17,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:17,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468662580] [2024-06-21 19:15:17,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468662580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:17,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:17,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:17,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344551933] [2024-06-21 19:15:17,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:17,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:17,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:17,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:17,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:17,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:15:17,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 169 transitions, 1502 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:17,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:17,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:15:17,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:17,884 INFO L124 PetriNetUnfolderBase]: 367/723 cut-off events. [2024-06-21 19:15:17,884 INFO L125 PetriNetUnfolderBase]: For 24247/24247 co-relation queries the response was YES. [2024-06-21 19:15:17,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3799 conditions, 723 events. 367/723 cut-off events. For 24247/24247 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3869 event pairs, 121 based on Foata normal form. 1/723 useless extension candidates. Maximal degree in co-relation 3722. Up to 641 conditions per place. [2024-06-21 19:15:17,888 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 155 selfloop transitions, 22 changer transitions 0/181 dead transitions. [2024-06-21 19:15:17,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 181 transitions, 1922 flow [2024-06-21 19:15:17,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:15:17,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:15:17,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-21 19:15:17,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-21 19:15:17,890 INFO L175 Difference]: Start difference. First operand has 199 places, 169 transitions, 1502 flow. Second operand 11 states and 137 transitions. [2024-06-21 19:15:17,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 181 transitions, 1922 flow [2024-06-21 19:15:17,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 181 transitions, 1853 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-21 19:15:17,950 INFO L231 Difference]: Finished difference. Result has 202 places, 171 transitions, 1530 flow [2024-06-21 19:15:17,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1530, PETRI_PLACES=202, PETRI_TRANSITIONS=171} [2024-06-21 19:15:17,950 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-21 19:15:17,950 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 171 transitions, 1530 flow [2024-06-21 19:15:17,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:17,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:17,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:17,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-21 19:15:17,951 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:17,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:17,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1721743711, now seen corresponding path program 1 times [2024-06-21 19:15:17,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:17,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254723175] [2024-06-21 19:15:17,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:17,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:19,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:19,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:19,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254723175] [2024-06-21 19:15:19,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254723175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:19,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:19,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:19,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670966244] [2024-06-21 19:15:19,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:19,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:19,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:19,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:19,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:19,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:15:19,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 171 transitions, 1530 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:19,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:19,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:15:19,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:19,938 INFO L124 PetriNetUnfolderBase]: 370/729 cut-off events. [2024-06-21 19:15:19,939 INFO L125 PetriNetUnfolderBase]: For 24873/24873 co-relation queries the response was YES. [2024-06-21 19:15:19,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3844 conditions, 729 events. 370/729 cut-off events. For 24873/24873 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3882 event pairs, 55 based on Foata normal form. 1/729 useless extension candidates. Maximal degree in co-relation 3766. Up to 609 conditions per place. [2024-06-21 19:15:19,944 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 147 selfloop transitions, 39 changer transitions 0/190 dead transitions. [2024-06-21 19:15:19,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 190 transitions, 1974 flow [2024-06-21 19:15:19,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:15:19,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:15:19,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-21 19:15:19,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-21 19:15:19,946 INFO L175 Difference]: Start difference. First operand has 202 places, 171 transitions, 1530 flow. Second operand 12 states and 154 transitions. [2024-06-21 19:15:19,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 190 transitions, 1974 flow [2024-06-21 19:15:20,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 190 transitions, 1893 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-21 19:15:20,007 INFO L231 Difference]: Finished difference. Result has 205 places, 173 transitions, 1566 flow [2024-06-21 19:15:20,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1566, PETRI_PLACES=205, PETRI_TRANSITIONS=173} [2024-06-21 19:15:20,007 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-21 19:15:20,007 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 173 transitions, 1566 flow [2024-06-21 19:15:20,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:20,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:20,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:20,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-21 19:15:20,008 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:20,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:20,008 INFO L85 PathProgramCache]: Analyzing trace with hash -467850773, now seen corresponding path program 2 times [2024-06-21 19:15:20,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:20,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527724434] [2024-06-21 19:15:20,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:20,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:21,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:21,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:21,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527724434] [2024-06-21 19:15:21,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527724434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:21,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:21,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:21,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787326226] [2024-06-21 19:15:21,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:21,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:21,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:21,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:21,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:21,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:15:21,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 173 transitions, 1566 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:21,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:21,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:15:21,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:22,312 INFO L124 PetriNetUnfolderBase]: 378/743 cut-off events. [2024-06-21 19:15:22,313 INFO L125 PetriNetUnfolderBase]: For 27131/27131 co-relation queries the response was YES. [2024-06-21 19:15:22,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4037 conditions, 743 events. 378/743 cut-off events. For 27131/27131 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 3973 event pairs, 51 based on Foata normal form. 1/743 useless extension candidates. Maximal degree in co-relation 3958. Up to 546 conditions per place. [2024-06-21 19:15:22,318 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 130 selfloop transitions, 55 changer transitions 0/189 dead transitions. [2024-06-21 19:15:22,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 189 transitions, 2136 flow [2024-06-21 19:15:22,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:22,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:22,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 146 transitions. [2024-06-21 19:15:22,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45625 [2024-06-21 19:15:22,321 INFO L175 Difference]: Start difference. First operand has 205 places, 173 transitions, 1566 flow. Second operand 10 states and 146 transitions. [2024-06-21 19:15:22,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 189 transitions, 2136 flow [2024-06-21 19:15:22,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 189 transitions, 2028 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-21 19:15:22,449 INFO L231 Difference]: Finished difference. Result has 204 places, 177 transitions, 1642 flow [2024-06-21 19:15:22,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1458, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1642, PETRI_PLACES=204, PETRI_TRANSITIONS=177} [2024-06-21 19:15:22,450 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 173 predicate places. [2024-06-21 19:15:22,450 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 177 transitions, 1642 flow [2024-06-21 19:15:22,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:22,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:22,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:22,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-21 19:15:22,451 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:22,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:22,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1104661349, now seen corresponding path program 3 times [2024-06-21 19:15:22,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:22,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890611789] [2024-06-21 19:15:22,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:22,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:22,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:23,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:23,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:23,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890611789] [2024-06-21 19:15:23,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890611789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:23,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:23,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:23,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642614251] [2024-06-21 19:15:23,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:23,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:23,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:23,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:23,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:23,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:15:23,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 177 transitions, 1642 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:23,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:23,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:15:23,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:24,443 INFO L124 PetriNetUnfolderBase]: 386/758 cut-off events. [2024-06-21 19:15:24,443 INFO L125 PetriNetUnfolderBase]: For 30067/30067 co-relation queries the response was YES. [2024-06-21 19:15:24,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4251 conditions, 758 events. 386/758 cut-off events. For 30067/30067 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4070 event pairs, 51 based on Foata normal form. 1/758 useless extension candidates. Maximal degree in co-relation 4171. Up to 556 conditions per place. [2024-06-21 19:15:24,449 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 123 selfloop transitions, 67 changer transitions 0/194 dead transitions. [2024-06-21 19:15:24,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 194 transitions, 2344 flow [2024-06-21 19:15:24,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:24,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:24,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2024-06-21 19:15:24,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-21 19:15:24,453 INFO L175 Difference]: Start difference. First operand has 204 places, 177 transitions, 1642 flow. Second operand 10 states and 145 transitions. [2024-06-21 19:15:24,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 194 transitions, 2344 flow [2024-06-21 19:15:24,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 194 transitions, 2257 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-21 19:15:24,581 INFO L231 Difference]: Finished difference. Result has 208 places, 181 transitions, 1767 flow [2024-06-21 19:15:24,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1767, PETRI_PLACES=208, PETRI_TRANSITIONS=181} [2024-06-21 19:15:24,581 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-21 19:15:24,582 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 181 transitions, 1767 flow [2024-06-21 19:15:24,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:24,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:24,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:24,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-21 19:15:24,582 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:24,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:24,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1104928259, now seen corresponding path program 4 times [2024-06-21 19:15:24,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:24,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467931312] [2024-06-21 19:15:24,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:24,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:25,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:25,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:25,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467931312] [2024-06-21 19:15:25,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467931312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:25,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:25,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:25,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527985918] [2024-06-21 19:15:25,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:25,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:25,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:25,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:25,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:26,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:15:26,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 181 transitions, 1767 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:26,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:26,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:15:26,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:26,375 INFO L124 PetriNetUnfolderBase]: 384/755 cut-off events. [2024-06-21 19:15:26,375 INFO L125 PetriNetUnfolderBase]: For 29502/29502 co-relation queries the response was YES. [2024-06-21 19:15:26,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4275 conditions, 755 events. 384/755 cut-off events. For 29502/29502 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4060 event pairs, 55 based on Foata normal form. 1/755 useless extension candidates. Maximal degree in co-relation 4193. Up to 554 conditions per place. [2024-06-21 19:15:26,380 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 115 selfloop transitions, 74 changer transitions 0/193 dead transitions. [2024-06-21 19:15:26,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 193 transitions, 2285 flow [2024-06-21 19:15:26,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:26,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:26,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-21 19:15:26,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446875 [2024-06-21 19:15:26,381 INFO L175 Difference]: Start difference. First operand has 208 places, 181 transitions, 1767 flow. Second operand 10 states and 143 transitions. [2024-06-21 19:15:26,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 193 transitions, 2285 flow [2024-06-21 19:15:26,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 193 transitions, 2140 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-21 19:15:26,463 INFO L231 Difference]: Finished difference. Result has 212 places, 181 transitions, 1775 flow [2024-06-21 19:15:26,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1622, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1775, PETRI_PLACES=212, PETRI_TRANSITIONS=181} [2024-06-21 19:15:26,464 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-21 19:15:26,464 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 181 transitions, 1775 flow [2024-06-21 19:15:26,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:26,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:26,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:26,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-21 19:15:26,465 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:26,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:26,465 INFO L85 PathProgramCache]: Analyzing trace with hash 88386545, now seen corresponding path program 5 times [2024-06-21 19:15:26,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:26,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676407006] [2024-06-21 19:15:26,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:26,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:28,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:28,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:28,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676407006] [2024-06-21 19:15:28,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676407006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:28,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:28,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:28,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719564176] [2024-06-21 19:15:28,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:28,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:28,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:28,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:28,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:28,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:15:28,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 181 transitions, 1775 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:28,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:28,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:15:28,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:28,695 INFO L124 PetriNetUnfolderBase]: 382/752 cut-off events. [2024-06-21 19:15:28,695 INFO L125 PetriNetUnfolderBase]: For 28653/28653 co-relation queries the response was YES. [2024-06-21 19:15:28,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4209 conditions, 752 events. 382/752 cut-off events. For 28653/28653 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4032 event pairs, 57 based on Foata normal form. 1/752 useless extension candidates. Maximal degree in co-relation 4126. Up to 552 conditions per place. [2024-06-21 19:15:28,701 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 126 selfloop transitions, 62 changer transitions 0/192 dead transitions. [2024-06-21 19:15:28,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 192 transitions, 2177 flow [2024-06-21 19:15:28,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:28,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:28,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-21 19:15:28,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-21 19:15:28,705 INFO L175 Difference]: Start difference. First operand has 212 places, 181 transitions, 1775 flow. Second operand 10 states and 144 transitions. [2024-06-21 19:15:28,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 192 transitions, 2177 flow [2024-06-21 19:15:28,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 192 transitions, 2016 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-21 19:15:28,844 INFO L231 Difference]: Finished difference. Result has 214 places, 181 transitions, 1744 flow [2024-06-21 19:15:28,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1744, PETRI_PLACES=214, PETRI_TRANSITIONS=181} [2024-06-21 19:15:28,845 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 183 predicate places. [2024-06-21 19:15:28,845 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 181 transitions, 1744 flow [2024-06-21 19:15:28,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:28,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:28,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:28,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-21 19:15:28,846 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:28,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:28,846 INFO L85 PathProgramCache]: Analyzing trace with hash 96015025, now seen corresponding path program 1 times [2024-06-21 19:15:28,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:28,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571650131] [2024-06-21 19:15:28,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:28,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:30,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:30,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:30,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571650131] [2024-06-21 19:15:30,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571650131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:30,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:30,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:15:30,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075395894] [2024-06-21 19:15:30,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:30,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:15:30,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:30,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:15:30,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:15:30,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:15:30,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 181 transitions, 1744 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:30,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:30,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:15:30,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:30,728 INFO L124 PetriNetUnfolderBase]: 386/761 cut-off events. [2024-06-21 19:15:30,729 INFO L125 PetriNetUnfolderBase]: For 31630/31630 co-relation queries the response was YES. [2024-06-21 19:15:30,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4273 conditions, 761 events. 386/761 cut-off events. For 31630/31630 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4118 event pairs, 66 based on Foata normal form. 2/762 useless extension candidates. Maximal degree in co-relation 4189. Up to 655 conditions per place. [2024-06-21 19:15:30,734 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 165 selfloop transitions, 26 changer transitions 0/195 dead transitions. [2024-06-21 19:15:30,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 195 transitions, 2188 flow [2024-06-21 19:15:30,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:30,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:30,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-21 19:15:30,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 19:15:30,737 INFO L175 Difference]: Start difference. First operand has 214 places, 181 transitions, 1744 flow. Second operand 10 states and 140 transitions. [2024-06-21 19:15:30,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 195 transitions, 2188 flow [2024-06-21 19:15:30,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 195 transitions, 1998 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-21 19:15:30,825 INFO L231 Difference]: Finished difference. Result has 213 places, 182 transitions, 1644 flow [2024-06-21 19:15:30,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1644, PETRI_PLACES=213, PETRI_TRANSITIONS=182} [2024-06-21 19:15:30,825 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 182 predicate places. [2024-06-21 19:15:30,825 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 182 transitions, 1644 flow [2024-06-21 19:15:30,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:30,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:30,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:30,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-21 19:15:30,826 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:30,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:30,826 INFO L85 PathProgramCache]: Analyzing trace with hash -24950845, now seen corresponding path program 6 times [2024-06-21 19:15:30,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:30,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592100179] [2024-06-21 19:15:30,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:30,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:32,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:32,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:32,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592100179] [2024-06-21 19:15:32,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592100179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:32,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:32,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:32,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885704272] [2024-06-21 19:15:32,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:32,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:32,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:32,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:32,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:32,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:15:32,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 182 transitions, 1644 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:32,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:32,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:15:32,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:32,630 INFO L124 PetriNetUnfolderBase]: 399/780 cut-off events. [2024-06-21 19:15:32,631 INFO L125 PetriNetUnfolderBase]: For 34642/34642 co-relation queries the response was YES. [2024-06-21 19:15:32,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4466 conditions, 780 events. 399/780 cut-off events. For 34642/34642 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4248 event pairs, 59 based on Foata normal form. 1/775 useless extension candidates. Maximal degree in co-relation 4382. Up to 482 conditions per place. [2024-06-21 19:15:32,637 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 112 selfloop transitions, 86 changer transitions 0/202 dead transitions. [2024-06-21 19:15:32,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 202 transitions, 2564 flow [2024-06-21 19:15:32,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:32,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:32,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-21 19:15:32,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-21 19:15:32,638 INFO L175 Difference]: Start difference. First operand has 213 places, 182 transitions, 1644 flow. Second operand 10 states and 150 transitions. [2024-06-21 19:15:32,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 202 transitions, 2564 flow [2024-06-21 19:15:32,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 202 transitions, 2484 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-21 19:15:32,710 INFO L231 Difference]: Finished difference. Result has 215 places, 190 transitions, 1889 flow [2024-06-21 19:15:32,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1564, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1889, PETRI_PLACES=215, PETRI_TRANSITIONS=190} [2024-06-21 19:15:32,710 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-21 19:15:32,710 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 190 transitions, 1889 flow [2024-06-21 19:15:32,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:32,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:32,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:32,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-21 19:15:32,711 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:32,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:32,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1305292359, now seen corresponding path program 7 times [2024-06-21 19:15:32,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:32,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814653067] [2024-06-21 19:15:32,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:32,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:34,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:34,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:34,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814653067] [2024-06-21 19:15:34,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814653067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:34,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:34,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:34,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681935297] [2024-06-21 19:15:34,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:34,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:34,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:34,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:34,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:34,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:15:34,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 190 transitions, 1889 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:34,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:34,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:15:34,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:34,652 INFO L124 PetriNetUnfolderBase]: 402/785 cut-off events. [2024-06-21 19:15:34,652 INFO L125 PetriNetUnfolderBase]: For 35780/35780 co-relation queries the response was YES. [2024-06-21 19:15:34,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4615 conditions, 785 events. 402/785 cut-off events. For 35780/35780 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4276 event pairs, 59 based on Foata normal form. 1/780 useless extension candidates. Maximal degree in co-relation 4529. Up to 486 conditions per place. [2024-06-21 19:15:34,658 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 113 selfloop transitions, 87 changer transitions 0/204 dead transitions. [2024-06-21 19:15:34,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 204 transitions, 2715 flow [2024-06-21 19:15:34,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:34,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:34,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-21 19:15:34,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471875 [2024-06-21 19:15:34,659 INFO L175 Difference]: Start difference. First operand has 215 places, 190 transitions, 1889 flow. Second operand 10 states and 151 transitions. [2024-06-21 19:15:34,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 204 transitions, 2715 flow [2024-06-21 19:15:34,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 204 transitions, 2621 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-21 19:15:34,734 INFO L231 Difference]: Finished difference. Result has 221 places, 192 transitions, 2014 flow [2024-06-21 19:15:34,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1801, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2014, PETRI_PLACES=221, PETRI_TRANSITIONS=192} [2024-06-21 19:15:34,734 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-21 19:15:34,734 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 192 transitions, 2014 flow [2024-06-21 19:15:34,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:34,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:34,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:34,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-21 19:15:34,735 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:34,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:34,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1270736585, now seen corresponding path program 8 times [2024-06-21 19:15:34,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:34,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624715951] [2024-06-21 19:15:34,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:34,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:36,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:36,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:36,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624715951] [2024-06-21 19:15:36,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624715951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:36,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:36,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:36,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329457130] [2024-06-21 19:15:36,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:36,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:36,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:36,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:36,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:36,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:15:36,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 192 transitions, 2014 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:36,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:36,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:15:36,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:36,772 INFO L124 PetriNetUnfolderBase]: 410/800 cut-off events. [2024-06-21 19:15:36,773 INFO L125 PetriNetUnfolderBase]: For 39223/39223 co-relation queries the response was YES. [2024-06-21 19:15:36,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4923 conditions, 800 events. 410/800 cut-off events. For 39223/39223 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4378 event pairs, 57 based on Foata normal form. 1/795 useless extension candidates. Maximal degree in co-relation 4835. Up to 496 conditions per place. [2024-06-21 19:15:36,779 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 119 selfloop transitions, 85 changer transitions 0/208 dead transitions. [2024-06-21 19:15:36,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 208 transitions, 2902 flow [2024-06-21 19:15:36,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:36,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:36,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-21 19:15:36,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-21 19:15:36,780 INFO L175 Difference]: Start difference. First operand has 221 places, 192 transitions, 2014 flow. Second operand 10 states and 152 transitions. [2024-06-21 19:15:36,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 208 transitions, 2902 flow [2024-06-21 19:15:36,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 208 transitions, 2758 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-21 19:15:36,894 INFO L231 Difference]: Finished difference. Result has 225 places, 196 transitions, 2133 flow [2024-06-21 19:15:36,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1874, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2133, PETRI_PLACES=225, PETRI_TRANSITIONS=196} [2024-06-21 19:15:36,894 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-21 19:15:36,894 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 196 transitions, 2133 flow [2024-06-21 19:15:36,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:36,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:36,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:36,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-21 19:15:36,895 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:36,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:36,896 INFO L85 PathProgramCache]: Analyzing trace with hash -32569405, now seen corresponding path program 9 times [2024-06-21 19:15:36,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:36,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333472146] [2024-06-21 19:15:36,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:36,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:38,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:38,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:38,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333472146] [2024-06-21 19:15:38,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333472146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:38,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:38,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:38,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403364812] [2024-06-21 19:15:38,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:38,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:38,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:38,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:38,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:38,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:15:38,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 196 transitions, 2133 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:38,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:38,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:15:38,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:38,804 INFO L124 PetriNetUnfolderBase]: 408/797 cut-off events. [2024-06-21 19:15:38,804 INFO L125 PetriNetUnfolderBase]: For 38788/38788 co-relation queries the response was YES. [2024-06-21 19:15:38,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4850 conditions, 797 events. 408/797 cut-off events. For 38788/38788 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4373 event pairs, 59 based on Foata normal form. 1/792 useless extension candidates. Maximal degree in co-relation 4761. Up to 494 conditions per place. [2024-06-21 19:15:38,810 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 109 selfloop transitions, 94 changer transitions 0/207 dead transitions. [2024-06-21 19:15:38,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 207 transitions, 2811 flow [2024-06-21 19:15:38,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:38,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:38,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-21 19:15:38,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-21 19:15:38,811 INFO L175 Difference]: Start difference. First operand has 225 places, 196 transitions, 2133 flow. Second operand 10 states and 148 transitions. [2024-06-21 19:15:38,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 207 transitions, 2811 flow [2024-06-21 19:15:38,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 207 transitions, 2450 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-21 19:15:38,894 INFO L231 Difference]: Finished difference. Result has 226 places, 196 transitions, 1965 flow [2024-06-21 19:15:38,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1772, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1965, PETRI_PLACES=226, PETRI_TRANSITIONS=196} [2024-06-21 19:15:38,895 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-21 19:15:38,895 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 196 transitions, 1965 flow [2024-06-21 19:15:38,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:38,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:38,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:38,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-21 19:15:38,896 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:38,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:38,896 INFO L85 PathProgramCache]: Analyzing trace with hash 233337125, now seen corresponding path program 10 times [2024-06-21 19:15:38,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:38,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3851699] [2024-06-21 19:15:38,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:38,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:40,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:40,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:40,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3851699] [2024-06-21 19:15:40,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3851699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:40,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:40,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:40,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962263277] [2024-06-21 19:15:40,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:40,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:40,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:40,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:40,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:40,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:15:40,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 196 transitions, 1965 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:40,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:40,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:15:40,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:40,929 INFO L124 PetriNetUnfolderBase]: 411/807 cut-off events. [2024-06-21 19:15:40,930 INFO L125 PetriNetUnfolderBase]: For 39159/39159 co-relation queries the response was YES. [2024-06-21 19:15:40,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4765 conditions, 807 events. 411/807 cut-off events. For 39159/39159 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4427 event pairs, 120 based on Foata normal form. 1/807 useless extension candidates. Maximal degree in co-relation 4676. Up to 721 conditions per place. [2024-06-21 19:15:40,936 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 185 selfloop transitions, 18 changer transitions 0/207 dead transitions. [2024-06-21 19:15:40,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 207 transitions, 2431 flow [2024-06-21 19:15:40,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:15:40,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:15:40,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 19:15:40,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-21 19:15:40,937 INFO L175 Difference]: Start difference. First operand has 226 places, 196 transitions, 1965 flow. Second operand 11 states and 133 transitions. [2024-06-21 19:15:40,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 207 transitions, 2431 flow [2024-06-21 19:15:41,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 207 transitions, 2237 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-21 19:15:41,035 INFO L231 Difference]: Finished difference. Result has 228 places, 198 transitions, 1856 flow [2024-06-21 19:15:41,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1775, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1856, PETRI_PLACES=228, PETRI_TRANSITIONS=198} [2024-06-21 19:15:41,035 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 197 predicate places. [2024-06-21 19:15:41,035 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 198 transitions, 1856 flow [2024-06-21 19:15:41,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:41,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:41,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:41,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-21 19:15:41,036 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:41,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:41,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1708805083, now seen corresponding path program 11 times [2024-06-21 19:15:41,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:41,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065188358] [2024-06-21 19:15:41,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:41,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:42,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:42,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:42,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065188358] [2024-06-21 19:15:42,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065188358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:42,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:42,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:42,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920284571] [2024-06-21 19:15:42,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:42,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:42,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:42,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:42,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:42,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:15:42,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 198 transitions, 1856 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:42,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:42,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:15:42,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:42,843 INFO L124 PetriNetUnfolderBase]: 409/801 cut-off events. [2024-06-21 19:15:42,843 INFO L125 PetriNetUnfolderBase]: For 38032/38032 co-relation queries the response was YES. [2024-06-21 19:15:42,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4538 conditions, 801 events. 409/801 cut-off events. For 38032/38032 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4401 event pairs, 57 based on Foata normal form. 1/796 useless extension candidates. Maximal degree in co-relation 4448. Up to 496 conditions per place. [2024-06-21 19:15:42,849 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 116 selfloop transitions, 89 changer transitions 0/209 dead transitions. [2024-06-21 19:15:42,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 209 transitions, 2546 flow [2024-06-21 19:15:42,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:42,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:42,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-21 19:15:42,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-21 19:15:42,850 INFO L175 Difference]: Start difference. First operand has 228 places, 198 transitions, 1856 flow. Second operand 10 states and 150 transitions. [2024-06-21 19:15:42,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 209 transitions, 2546 flow [2024-06-21 19:15:42,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 209 transitions, 2463 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-21 19:15:42,941 INFO L231 Difference]: Finished difference. Result has 229 places, 198 transitions, 1956 flow [2024-06-21 19:15:42,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1773, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1956, PETRI_PLACES=229, PETRI_TRANSITIONS=198} [2024-06-21 19:15:42,942 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 198 predicate places. [2024-06-21 19:15:42,942 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 198 transitions, 1956 flow [2024-06-21 19:15:42,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:42,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:42,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:42,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-21 19:15:42,942 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:42,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:42,943 INFO L85 PathProgramCache]: Analyzing trace with hash 223210533, now seen corresponding path program 12 times [2024-06-21 19:15:42,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:42,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960249416] [2024-06-21 19:15:42,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:42,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:44,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:44,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:44,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960249416] [2024-06-21 19:15:44,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960249416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:44,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:44,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:44,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120385476] [2024-06-21 19:15:44,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:44,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:44,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:44,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:44,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:44,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:15:44,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 198 transitions, 1956 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:44,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:44,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:15:44,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:44,741 INFO L124 PetriNetUnfolderBase]: 412/806 cut-off events. [2024-06-21 19:15:44,742 INFO L125 PetriNetUnfolderBase]: For 39395/39395 co-relation queries the response was YES. [2024-06-21 19:15:44,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4709 conditions, 806 events. 412/806 cut-off events. For 39395/39395 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4434 event pairs, 61 based on Foata normal form. 1/801 useless extension candidates. Maximal degree in co-relation 4618. Up to 500 conditions per place. [2024-06-21 19:15:44,747 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 100 selfloop transitions, 107 changer transitions 0/211 dead transitions. [2024-06-21 19:15:44,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 211 transitions, 2698 flow [2024-06-21 19:15:44,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:44,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:44,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-21 19:15:44,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-21 19:15:44,749 INFO L175 Difference]: Start difference. First operand has 229 places, 198 transitions, 1956 flow. Second operand 10 states and 148 transitions. [2024-06-21 19:15:44,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 211 transitions, 2698 flow [2024-06-21 19:15:44,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 211 transitions, 2519 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-21 19:15:44,837 INFO L231 Difference]: Finished difference. Result has 231 places, 200 transitions, 2040 flow [2024-06-21 19:15:44,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1781, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2040, PETRI_PLACES=231, PETRI_TRANSITIONS=200} [2024-06-21 19:15:44,838 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-21 19:15:44,838 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 200 transitions, 2040 flow [2024-06-21 19:15:44,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:44,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:44,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:44,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-21 19:15:44,838 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:44,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:44,838 INFO L85 PathProgramCache]: Analyzing trace with hash 222943623, now seen corresponding path program 13 times [2024-06-21 19:15:44,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:44,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844819950] [2024-06-21 19:15:44,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:44,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:46,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:46,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:46,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844819950] [2024-06-21 19:15:46,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844819950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:46,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:46,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:15:46,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688925464] [2024-06-21 19:15:46,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:46,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:15:46,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:46,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:15:46,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:15:46,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:15:46,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 200 transitions, 2040 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:46,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:46,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:15:46,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:47,458 INFO L124 PetriNetUnfolderBase]: 410/803 cut-off events. [2024-06-21 19:15:47,458 INFO L125 PetriNetUnfolderBase]: For 38350/38350 co-relation queries the response was YES. [2024-06-21 19:15:47,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4673 conditions, 803 events. 410/803 cut-off events. For 38350/38350 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4413 event pairs, 61 based on Foata normal form. 1/798 useless extension candidates. Maximal degree in co-relation 4581. Up to 498 conditions per place. [2024-06-21 19:15:47,464 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 98 selfloop transitions, 108 changer transitions 0/210 dead transitions. [2024-06-21 19:15:47,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 210 transitions, 2606 flow [2024-06-21 19:15:47,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:47,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:47,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 146 transitions. [2024-06-21 19:15:47,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45625 [2024-06-21 19:15:47,465 INFO L175 Difference]: Start difference. First operand has 231 places, 200 transitions, 2040 flow. Second operand 10 states and 146 transitions. [2024-06-21 19:15:47,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 210 transitions, 2606 flow [2024-06-21 19:15:47,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 210 transitions, 2326 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-21 19:15:47,552 INFO L231 Difference]: Finished difference. Result has 233 places, 200 transitions, 1981 flow [2024-06-21 19:15:47,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1981, PETRI_PLACES=233, PETRI_TRANSITIONS=200} [2024-06-21 19:15:47,553 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-21 19:15:47,553 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 200 transitions, 1981 flow [2024-06-21 19:15:47,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:47,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:47,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:47,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-21 19:15:47,554 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:47,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:47,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1716423643, now seen corresponding path program 14 times [2024-06-21 19:15:47,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:47,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553728172] [2024-06-21 19:15:47,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:47,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:48,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:48,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:48,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553728172] [2024-06-21 19:15:48,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553728172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:48,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:48,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:48,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117398630] [2024-06-21 19:15:48,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:48,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:48,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:48,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:48,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:49,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:15:49,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 200 transitions, 1981 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:49,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:49,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:15:49,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:49,504 INFO L124 PetriNetUnfolderBase]: 413/808 cut-off events. [2024-06-21 19:15:49,504 INFO L125 PetriNetUnfolderBase]: For 39162/39162 co-relation queries the response was YES. [2024-06-21 19:15:49,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4680 conditions, 808 events. 413/808 cut-off events. For 39162/39162 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4432 event pairs, 59 based on Foata normal form. 1/803 useless extension candidates. Maximal degree in co-relation 4587. Up to 502 conditions per place. [2024-06-21 19:15:49,510 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 118 selfloop transitions, 90 changer transitions 0/212 dead transitions. [2024-06-21 19:15:49,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 212 transitions, 2593 flow [2024-06-21 19:15:49,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:49,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:49,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-21 19:15:49,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471875 [2024-06-21 19:15:49,511 INFO L175 Difference]: Start difference. First operand has 233 places, 200 transitions, 1981 flow. Second operand 10 states and 151 transitions. [2024-06-21 19:15:49,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 212 transitions, 2593 flow [2024-06-21 19:15:49,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 212 transitions, 2350 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-21 19:15:49,606 INFO L231 Difference]: Finished difference. Result has 233 places, 202 transitions, 1963 flow [2024-06-21 19:15:49,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1742, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1963, PETRI_PLACES=233, PETRI_TRANSITIONS=202} [2024-06-21 19:15:49,606 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-21 19:15:49,606 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 202 transitions, 1963 flow [2024-06-21 19:15:49,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:49,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:49,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:49,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-21 19:15:49,607 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:49,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:49,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1915725433, now seen corresponding path program 15 times [2024-06-21 19:15:49,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:49,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717031470] [2024-06-21 19:15:49,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:49,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:51,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:51,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:51,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717031470] [2024-06-21 19:15:51,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717031470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:51,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:51,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:51,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857837328] [2024-06-21 19:15:51,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:51,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:51,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:51,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:51,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:51,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:15:51,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 202 transitions, 1963 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:51,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:51,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:15:51,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:51,837 INFO L124 PetriNetUnfolderBase]: 411/805 cut-off events. [2024-06-21 19:15:51,837 INFO L125 PetriNetUnfolderBase]: For 37877/37877 co-relation queries the response was YES. [2024-06-21 19:15:51,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4556 conditions, 805 events. 411/805 cut-off events. For 37877/37877 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4436 event pairs, 61 based on Foata normal form. 1/800 useless extension candidates. Maximal degree in co-relation 4462. Up to 500 conditions per place. [2024-06-21 19:15:51,846 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 111 selfloop transitions, 96 changer transitions 0/211 dead transitions. [2024-06-21 19:15:51,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 211 transitions, 2397 flow [2024-06-21 19:15:51,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:51,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:51,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-21 19:15:51,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.459375 [2024-06-21 19:15:51,847 INFO L175 Difference]: Start difference. First operand has 233 places, 202 transitions, 1963 flow. Second operand 10 states and 147 transitions. [2024-06-21 19:15:51,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 211 transitions, 2397 flow [2024-06-21 19:15:51,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 211 transitions, 2180 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-21 19:15:51,946 INFO L231 Difference]: Finished difference. Result has 236 places, 202 transitions, 1943 flow [2024-06-21 19:15:51,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1746, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1943, PETRI_PLACES=236, PETRI_TRANSITIONS=202} [2024-06-21 19:15:51,946 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-21 19:15:51,946 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 202 transitions, 1943 flow [2024-06-21 19:15:51,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:51,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:51,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:51,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-21 19:15:51,947 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:51,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:51,948 INFO L85 PathProgramCache]: Analyzing trace with hash -24940925, now seen corresponding path program 2 times [2024-06-21 19:15:51,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:51,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396583634] [2024-06-21 19:15:51,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:51,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:53,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:53,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:53,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396583634] [2024-06-21 19:15:53,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396583634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:53,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:53,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:15:53,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591341208] [2024-06-21 19:15:53,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:53,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:15:53,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:53,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:15:53,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:15:53,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:15:53,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 202 transitions, 1943 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:53,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:53,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:15:53,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:54,224 INFO L124 PetriNetUnfolderBase]: 415/815 cut-off events. [2024-06-21 19:15:54,225 INFO L125 PetriNetUnfolderBase]: For 41678/41678 co-relation queries the response was YES. [2024-06-21 19:15:54,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4626 conditions, 815 events. 415/815 cut-off events. For 41678/41678 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4513 event pairs, 71 based on Foata normal form. 2/814 useless extension candidates. Maximal degree in co-relation 4531. Up to 663 conditions per place. [2024-06-21 19:15:54,231 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 168 selfloop transitions, 42 changer transitions 0/214 dead transitions. [2024-06-21 19:15:54,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 214 transitions, 2421 flow [2024-06-21 19:15:54,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:54,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:54,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-21 19:15:54,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-21 19:15:54,232 INFO L175 Difference]: Start difference. First operand has 236 places, 202 transitions, 1943 flow. Second operand 10 states and 144 transitions. [2024-06-21 19:15:54,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 214 transitions, 2421 flow [2024-06-21 19:15:54,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 214 transitions, 2196 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-21 19:15:54,326 INFO L231 Difference]: Finished difference. Result has 235 places, 203 transitions, 1842 flow [2024-06-21 19:15:54,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1718, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1842, PETRI_PLACES=235, PETRI_TRANSITIONS=203} [2024-06-21 19:15:54,327 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-06-21 19:15:54,327 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 203 transitions, 1842 flow [2024-06-21 19:15:54,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:54,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:54,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:54,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-21 19:15:54,327 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:54,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:54,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1708795163, now seen corresponding path program 3 times [2024-06-21 19:15:54,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:54,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270363889] [2024-06-21 19:15:54,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:54,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:56,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:56,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:56,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270363889] [2024-06-21 19:15:56,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270363889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:56,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:56,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:15:56,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126475970] [2024-06-21 19:15:56,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:56,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:15:56,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:56,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:15:56,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:15:56,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:15:56,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 203 transitions, 1842 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:56,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:56,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:15:56,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:56,659 INFO L124 PetriNetUnfolderBase]: 419/827 cut-off events. [2024-06-21 19:15:56,659 INFO L125 PetriNetUnfolderBase]: For 43215/43215 co-relation queries the response was YES. [2024-06-21 19:15:56,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4616 conditions, 827 events. 419/827 cut-off events. For 43215/43215 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4566 event pairs, 69 based on Foata normal form. 2/826 useless extension candidates. Maximal degree in co-relation 4521. Up to 671 conditions per place. [2024-06-21 19:15:56,664 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 171 selfloop transitions, 40 changer transitions 0/215 dead transitions. [2024-06-21 19:15:56,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 215 transitions, 2324 flow [2024-06-21 19:15:56,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:56,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:56,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2024-06-21 19:15:56,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-21 19:15:56,665 INFO L175 Difference]: Start difference. First operand has 235 places, 203 transitions, 1842 flow. Second operand 10 states and 145 transitions. [2024-06-21 19:15:56,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 215 transitions, 2324 flow [2024-06-21 19:15:56,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 215 transitions, 2210 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-21 19:15:56,752 INFO L231 Difference]: Finished difference. Result has 237 places, 204 transitions, 1850 flow [2024-06-21 19:15:56,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1728, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1850, PETRI_PLACES=237, PETRI_TRANSITIONS=204} [2024-06-21 19:15:56,753 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-21 19:15:56,753 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 204 transitions, 1850 flow [2024-06-21 19:15:56,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:56,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:56,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:56,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-21 19:15:56,753 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:56,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:56,753 INFO L85 PathProgramCache]: Analyzing trace with hash 548347523, now seen corresponding path program 4 times [2024-06-21 19:15:56,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:56,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097512566] [2024-06-21 19:15:56,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:56,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:58,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:58,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:58,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097512566] [2024-06-21 19:15:58,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097512566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:58,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:58,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:15:58,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94483524] [2024-06-21 19:15:58,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:58,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:15:58,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:58,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:15:58,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:15:58,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:15:58,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 204 transitions, 1850 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-21 19:15:58,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:58,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:15:58,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:59,190 INFO L124 PetriNetUnfolderBase]: 430/849 cut-off events. [2024-06-21 19:15:59,190 INFO L125 PetriNetUnfolderBase]: For 50314/50314 co-relation queries the response was YES. [2024-06-21 19:15:59,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4941 conditions, 849 events. 430/849 cut-off events. For 50314/50314 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4711 event pairs, 117 based on Foata normal form. 2/850 useless extension candidates. Maximal degree in co-relation 4845. Up to 728 conditions per place. [2024-06-21 19:15:59,196 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 192 selfloop transitions, 24 changer transitions 0/220 dead transitions. [2024-06-21 19:15:59,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 220 transitions, 2530 flow [2024-06-21 19:15:59,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:15:59,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:15:59,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-21 19:15:59,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-21 19:15:59,197 INFO L175 Difference]: Start difference. First operand has 237 places, 204 transitions, 1850 flow. Second operand 12 states and 149 transitions. [2024-06-21 19:15:59,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 220 transitions, 2530 flow [2024-06-21 19:15:59,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 220 transitions, 2418 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-21 19:15:59,314 INFO L231 Difference]: Finished difference. Result has 241 places, 206 transitions, 1868 flow [2024-06-21 19:15:59,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1738, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1868, PETRI_PLACES=241, PETRI_TRANSITIONS=206} [2024-06-21 19:15:59,315 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 210 predicate places. [2024-06-21 19:15:59,315 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 206 transitions, 1868 flow [2024-06-21 19:15:59,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-21 19:15:59,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:59,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:59,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-21 19:15:59,315 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:15:59,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:59,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1071184245, now seen corresponding path program 5 times [2024-06-21 19:15:59,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:59,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834906610] [2024-06-21 19:15:59,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:59,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:01,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:01,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:01,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834906610] [2024-06-21 19:16:01,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834906610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:01,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:01,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:01,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443815356] [2024-06-21 19:16:01,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:01,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:01,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:01,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:01,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:01,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:16:01,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 206 transitions, 1868 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-21 19:16:01,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:01,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:16:01,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:01,976 INFO L124 PetriNetUnfolderBase]: 434/855 cut-off events. [2024-06-21 19:16:01,977 INFO L125 PetriNetUnfolderBase]: For 51888/51888 co-relation queries the response was YES. [2024-06-21 19:16:01,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4964 conditions, 855 events. 434/855 cut-off events. For 51888/51888 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4754 event pairs, 119 based on Foata normal form. 2/856 useless extension candidates. Maximal degree in co-relation 4866. Up to 761 conditions per place. [2024-06-21 19:16:01,983 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 195 selfloop transitions, 19 changer transitions 0/218 dead transitions. [2024-06-21 19:16:01,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 218 transitions, 2360 flow [2024-06-21 19:16:01,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:01,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:01,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 19:16:01,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-21 19:16:01,984 INFO L175 Difference]: Start difference. First operand has 241 places, 206 transitions, 1868 flow. Second operand 11 states and 136 transitions. [2024-06-21 19:16:01,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 218 transitions, 2360 flow [2024-06-21 19:16:02,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 218 transitions, 2286 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 19:16:02,106 INFO L231 Difference]: Finished difference. Result has 244 places, 207 transitions, 1878 flow [2024-06-21 19:16:02,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1798, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1878, PETRI_PLACES=244, PETRI_TRANSITIONS=207} [2024-06-21 19:16:02,106 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-21 19:16:02,106 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 207 transitions, 1878 flow [2024-06-21 19:16:02,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-21 19:16:02,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:02,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:02,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-21 19:16:02,107 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:02,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:02,107 INFO L85 PathProgramCache]: Analyzing trace with hash 547961573, now seen corresponding path program 6 times [2024-06-21 19:16:02,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:02,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166724729] [2024-06-21 19:16:02,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:02,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:03,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:03,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:03,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166724729] [2024-06-21 19:16:03,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166724729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:03,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:03,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:03,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777773664] [2024-06-21 19:16:03,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:03,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:03,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:03,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:03,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:04,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:16:04,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 207 transitions, 1878 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-21 19:16:04,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:04,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:16:04,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:04,525 INFO L124 PetriNetUnfolderBase]: 431/850 cut-off events. [2024-06-21 19:16:04,525 INFO L125 PetriNetUnfolderBase]: For 46956/46956 co-relation queries the response was YES. [2024-06-21 19:16:04,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4730 conditions, 850 events. 431/850 cut-off events. For 46956/46956 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4750 event pairs, 118 based on Foata normal form. 2/851 useless extension candidates. Maximal degree in co-relation 4630. Up to 750 conditions per place. [2024-06-21 19:16:04,531 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 192 selfloop transitions, 23 changer transitions 0/219 dead transitions. [2024-06-21 19:16:04,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 219 transitions, 2334 flow [2024-06-21 19:16:04,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:16:04,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:16:04,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-21 19:16:04,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-21 19:16:04,532 INFO L175 Difference]: Start difference. First operand has 244 places, 207 transitions, 1878 flow. Second operand 12 states and 148 transitions. [2024-06-21 19:16:04,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 219 transitions, 2334 flow [2024-06-21 19:16:04,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 219 transitions, 2234 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-21 19:16:04,639 INFO L231 Difference]: Finished difference. Result has 247 places, 207 transitions, 1828 flow [2024-06-21 19:16:04,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1828, PETRI_PLACES=247, PETRI_TRANSITIONS=207} [2024-06-21 19:16:04,639 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 216 predicate places. [2024-06-21 19:16:04,640 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 207 transitions, 1828 flow [2024-06-21 19:16:04,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-21 19:16:04,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:04,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:04,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-21 19:16:04,640 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:04,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:04,641 INFO L85 PathProgramCache]: Analyzing trace with hash 223220453, now seen corresponding path program 7 times [2024-06-21 19:16:04,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:04,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028946329] [2024-06-21 19:16:04,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:04,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:06,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:06,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:06,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028946329] [2024-06-21 19:16:06,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028946329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:06,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:06,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:06,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077465898] [2024-06-21 19:16:06,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:06,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:06,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:06,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:06,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:06,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:16:06,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 207 transitions, 1828 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:06,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:06,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:16:06,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:06,921 INFO L124 PetriNetUnfolderBase]: 428/844 cut-off events. [2024-06-21 19:16:06,921 INFO L125 PetriNetUnfolderBase]: For 41504/41504 co-relation queries the response was YES. [2024-06-21 19:16:06,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4435 conditions, 844 events. 428/844 cut-off events. For 41504/41504 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4697 event pairs, 68 based on Foata normal form. 2/843 useless extension candidates. Maximal degree in co-relation 4334. Up to 690 conditions per place. [2024-06-21 19:16:06,927 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 169 selfloop transitions, 45 changer transitions 0/218 dead transitions. [2024-06-21 19:16:06,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 218 transitions, 2280 flow [2024-06-21 19:16:06,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:16:06,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:16:06,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-21 19:16:06,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446875 [2024-06-21 19:16:06,928 INFO L175 Difference]: Start difference. First operand has 247 places, 207 transitions, 1828 flow. Second operand 10 states and 143 transitions. [2024-06-21 19:16:06,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 218 transitions, 2280 flow [2024-06-21 19:16:07,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 218 transitions, 2228 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-21 19:16:07,036 INFO L231 Difference]: Finished difference. Result has 246 places, 207 transitions, 1870 flow [2024-06-21 19:16:07,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1776, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1870, PETRI_PLACES=246, PETRI_TRANSITIONS=207} [2024-06-21 19:16:07,037 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-21 19:16:07,037 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 207 transitions, 1870 flow [2024-06-21 19:16:07,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:07,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:07,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:07,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-21 19:16:07,038 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:07,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:07,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1847307063, now seen corresponding path program 1 times [2024-06-21 19:16:07,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:07,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571759601] [2024-06-21 19:16:07,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:07,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:08,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:08,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:08,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571759601] [2024-06-21 19:16:08,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571759601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:08,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:08,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:16:08,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612968290] [2024-06-21 19:16:08,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:08,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:16:08,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:08,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:16:08,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:16:08,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:16:08,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 207 transitions, 1870 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:08,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:08,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:16:08,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:09,091 INFO L124 PetriNetUnfolderBase]: 432/854 cut-off events. [2024-06-21 19:16:09,091 INFO L125 PetriNetUnfolderBase]: For 42956/42956 co-relation queries the response was YES. [2024-06-21 19:16:09,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4534 conditions, 854 events. 432/854 cut-off events. For 42956/42956 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4751 event pairs, 48 based on Foata normal form. 2/855 useless extension candidates. Maximal degree in co-relation 4433. Up to 741 conditions per place. [2024-06-21 19:16:09,097 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 195 selfloop transitions, 24 changer transitions 0/223 dead transitions. [2024-06-21 19:16:09,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 223 transitions, 2360 flow [2024-06-21 19:16:09,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:09,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:09,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 19:16:09,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-21 19:16:09,099 INFO L175 Difference]: Start difference. First operand has 246 places, 207 transitions, 1870 flow. Second operand 11 states and 142 transitions. [2024-06-21 19:16:09,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 223 transitions, 2360 flow [2024-06-21 19:16:09,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 223 transitions, 2222 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-21 19:16:09,193 INFO L231 Difference]: Finished difference. Result has 248 places, 208 transitions, 1800 flow [2024-06-21 19:16:09,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1732, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1800, PETRI_PLACES=248, PETRI_TRANSITIONS=208} [2024-06-21 19:16:09,193 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-21 19:16:09,194 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 208 transitions, 1800 flow [2024-06-21 19:16:09,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:09,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:09,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:09,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-21 19:16:09,194 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:09,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:09,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1960635657, now seen corresponding path program 2 times [2024-06-21 19:16:09,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:09,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32707250] [2024-06-21 19:16:09,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:09,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:10,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:10,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:10,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32707250] [2024-06-21 19:16:10,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32707250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:10,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:10,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:16:10,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156642020] [2024-06-21 19:16:10,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:10,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:16:10,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:10,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:16:10,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:16:10,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:16:10,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 208 transitions, 1800 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:10,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:10,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:16:10,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:11,301 INFO L124 PetriNetUnfolderBase]: 440/870 cut-off events. [2024-06-21 19:16:11,301 INFO L125 PetriNetUnfolderBase]: For 42869/42869 co-relation queries the response was YES. [2024-06-21 19:16:11,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4476 conditions, 870 events. 440/870 cut-off events. For 42869/42869 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4885 event pairs, 54 based on Foata normal form. 2/871 useless extension candidates. Maximal degree in co-relation 4374. Up to 743 conditions per place. [2024-06-21 19:16:11,308 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 197 selfloop transitions, 25 changer transitions 0/226 dead transitions. [2024-06-21 19:16:11,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 226 transitions, 2304 flow [2024-06-21 19:16:11,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:11,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:11,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 19:16:11,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 19:16:11,309 INFO L175 Difference]: Start difference. First operand has 248 places, 208 transitions, 1800 flow. Second operand 11 states and 144 transitions. [2024-06-21 19:16:11,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 226 transitions, 2304 flow [2024-06-21 19:16:11,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 226 transitions, 2191 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-21 19:16:11,403 INFO L231 Difference]: Finished difference. Result has 249 places, 210 transitions, 1769 flow [2024-06-21 19:16:11,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1689, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1769, PETRI_PLACES=249, PETRI_TRANSITIONS=210} [2024-06-21 19:16:11,403 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-21 19:16:11,404 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 210 transitions, 1769 flow [2024-06-21 19:16:11,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:11,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:11,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:11,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-21 19:16:11,404 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:11,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:11,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1460744679, now seen corresponding path program 3 times [2024-06-21 19:16:11,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:11,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547311550] [2024-06-21 19:16:11,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:11,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:12,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:12,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:12,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547311550] [2024-06-21 19:16:12,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547311550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:12,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:12,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:16:12,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061597600] [2024-06-21 19:16:12,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:12,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:16:12,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:12,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:16:12,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:16:13,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:16:13,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 210 transitions, 1769 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:13,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:13,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:16:13,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:13,430 INFO L124 PetriNetUnfolderBase]: 444/878 cut-off events. [2024-06-21 19:16:13,430 INFO L125 PetriNetUnfolderBase]: For 44661/44661 co-relation queries the response was YES. [2024-06-21 19:16:13,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4425 conditions, 878 events. 444/878 cut-off events. For 44661/44661 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4935 event pairs, 50 based on Foata normal form. 2/879 useless extension candidates. Maximal degree in co-relation 4323. Up to 729 conditions per place. [2024-06-21 19:16:13,440 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 199 selfloop transitions, 26 changer transitions 0/229 dead transitions. [2024-06-21 19:16:13,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 229 transitions, 2283 flow [2024-06-21 19:16:13,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:13,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:13,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 19:16:13,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-21 19:16:13,441 INFO L175 Difference]: Start difference. First operand has 249 places, 210 transitions, 1769 flow. Second operand 11 states and 146 transitions. [2024-06-21 19:16:13,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 229 transitions, 2283 flow [2024-06-21 19:16:13,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 229 transitions, 2227 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-21 19:16:13,543 INFO L231 Difference]: Finished difference. Result has 253 places, 212 transitions, 1801 flow [2024-06-21 19:16:13,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1713, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1801, PETRI_PLACES=253, PETRI_TRANSITIONS=212} [2024-06-21 19:16:13,543 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 222 predicate places. [2024-06-21 19:16:13,543 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 212 transitions, 1801 flow [2024-06-21 19:16:13,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:13,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:13,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:13,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-21 19:16:13,544 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:13,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:13,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1523489545, now seen corresponding path program 4 times [2024-06-21 19:16:13,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:13,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264863283] [2024-06-21 19:16:13,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:13,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:15,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:15,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:15,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264863283] [2024-06-21 19:16:15,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264863283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:15,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:15,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:16:15,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233985485] [2024-06-21 19:16:15,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:15,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:16:15,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:15,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:16:15,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:16:15,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:16:15,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 212 transitions, 1801 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:15,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:15,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:16:15,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:15,707 INFO L124 PetriNetUnfolderBase]: 448/886 cut-off events. [2024-06-21 19:16:15,707 INFO L125 PetriNetUnfolderBase]: For 45080/45080 co-relation queries the response was YES. [2024-06-21 19:16:15,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4536 conditions, 886 events. 448/886 cut-off events. For 45080/45080 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4988 event pairs, 50 based on Foata normal form. 2/887 useless extension candidates. Maximal degree in co-relation 4432. Up to 754 conditions per place. [2024-06-21 19:16:15,713 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 208 selfloop transitions, 21 changer transitions 0/233 dead transitions. [2024-06-21 19:16:15,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 233 transitions, 2333 flow [2024-06-21 19:16:15,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:15,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:15,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 19:16:15,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 19:16:15,714 INFO L175 Difference]: Start difference. First operand has 253 places, 212 transitions, 1801 flow. Second operand 11 states and 143 transitions. [2024-06-21 19:16:15,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 233 transitions, 2333 flow [2024-06-21 19:16:15,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 233 transitions, 2267 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-21 19:16:15,869 INFO L231 Difference]: Finished difference. Result has 257 places, 214 transitions, 1813 flow [2024-06-21 19:16:15,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1735, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1813, PETRI_PLACES=257, PETRI_TRANSITIONS=214} [2024-06-21 19:16:15,870 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-21 19:16:15,870 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 214 transitions, 1813 flow [2024-06-21 19:16:15,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:15,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:15,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:15,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-21 19:16:15,870 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:15,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:15,871 INFO L85 PathProgramCache]: Analyzing trace with hash 258513267, now seen corresponding path program 1 times [2024-06-21 19:16:15,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:15,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837143235] [2024-06-21 19:16:15,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:15,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:17,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:17,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:17,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837143235] [2024-06-21 19:16:17,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837143235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:17,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:17,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:17,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352637384] [2024-06-21 19:16:17,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:17,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:17,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:17,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:17,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:17,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:16:17,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 214 transitions, 1813 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:17,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:17,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:16:17,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:18,110 INFO L124 PetriNetUnfolderBase]: 451/891 cut-off events. [2024-06-21 19:16:18,111 INFO L125 PetriNetUnfolderBase]: For 44250/44250 co-relation queries the response was YES. [2024-06-21 19:16:18,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4596 conditions, 891 events. 451/891 cut-off events. For 44250/44250 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5049 event pairs, 63 based on Foata normal form. 1/891 useless extension candidates. Maximal degree in co-relation 4491. Up to 756 conditions per place. [2024-06-21 19:16:18,144 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 187 selfloop transitions, 39 changer transitions 0/230 dead transitions. [2024-06-21 19:16:18,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 230 transitions, 2339 flow [2024-06-21 19:16:18,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:18,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:18,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-21 19:16:18,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-21 19:16:18,145 INFO L175 Difference]: Start difference. First operand has 257 places, 214 transitions, 1813 flow. Second operand 11 states and 152 transitions. [2024-06-21 19:16:18,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 230 transitions, 2339 flow [2024-06-21 19:16:18,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 230 transitions, 2279 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-21 19:16:18,303 INFO L231 Difference]: Finished difference. Result has 260 places, 216 transitions, 1880 flow [2024-06-21 19:16:18,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1753, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1880, PETRI_PLACES=260, PETRI_TRANSITIONS=216} [2024-06-21 19:16:18,304 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-21 19:16:18,304 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 216 transitions, 1880 flow [2024-06-21 19:16:18,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:18,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:18,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:18,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-21 19:16:18,305 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:18,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:18,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1327089177, now seen corresponding path program 5 times [2024-06-21 19:16:18,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:18,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532596628] [2024-06-21 19:16:18,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:18,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:20,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:20,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:20,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532596628] [2024-06-21 19:16:20,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532596628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:20,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:20,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:20,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219439393] [2024-06-21 19:16:20,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:20,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:20,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:20,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:20,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:20,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:16:20,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 216 transitions, 1880 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:20,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:20,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:16:20,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:20,911 INFO L124 PetriNetUnfolderBase]: 455/898 cut-off events. [2024-06-21 19:16:20,911 INFO L125 PetriNetUnfolderBase]: For 48300/48300 co-relation queries the response was YES. [2024-06-21 19:16:20,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4678 conditions, 898 events. 455/898 cut-off events. For 48300/48300 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5079 event pairs, 53 based on Foata normal form. 2/899 useless extension candidates. Maximal degree in co-relation 4572. Up to 750 conditions per place. [2024-06-21 19:16:20,919 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 182 selfloop transitions, 45 changer transitions 0/231 dead transitions. [2024-06-21 19:16:20,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 231 transitions, 2388 flow [2024-06-21 19:16:20,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:20,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:20,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 19:16:20,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 19:16:20,920 INFO L175 Difference]: Start difference. First operand has 260 places, 216 transitions, 1880 flow. Second operand 11 states and 144 transitions. [2024-06-21 19:16:20,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 231 transitions, 2388 flow [2024-06-21 19:16:21,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 231 transitions, 2277 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-21 19:16:21,081 INFO L231 Difference]: Finished difference. Result has 262 places, 217 transitions, 1885 flow [2024-06-21 19:16:21,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1769, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1885, PETRI_PLACES=262, PETRI_TRANSITIONS=217} [2024-06-21 19:16:21,082 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 231 predicate places. [2024-06-21 19:16:21,082 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 217 transitions, 1885 flow [2024-06-21 19:16:21,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:21,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:21,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:21,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-21 19:16:21,083 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:21,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:21,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1022822555, now seen corresponding path program 6 times [2024-06-21 19:16:21,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:21,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008680638] [2024-06-21 19:16:21,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:21,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:22,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:22,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:22,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008680638] [2024-06-21 19:16:22,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008680638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:22,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:22,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:16:22,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573664062] [2024-06-21 19:16:22,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:22,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:16:22,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:22,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:16:22,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:16:23,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:16:23,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 217 transitions, 1885 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:23,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:23,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:16:23,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:23,343 INFO L124 PetriNetUnfolderBase]: 459/908 cut-off events. [2024-06-21 19:16:23,343 INFO L125 PetriNetUnfolderBase]: For 50291/50291 co-relation queries the response was YES. [2024-06-21 19:16:23,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4736 conditions, 908 events. 459/908 cut-off events. For 50291/50291 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5163 event pairs, 59 based on Foata normal form. 2/909 useless extension candidates. Maximal degree in co-relation 4629. Up to 767 conditions per place. [2024-06-21 19:16:23,351 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 190 selfloop transitions, 38 changer transitions 0/232 dead transitions. [2024-06-21 19:16:23,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 232 transitions, 2397 flow [2024-06-21 19:16:23,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:23,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:23,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-21 19:16:23,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-21 19:16:23,353 INFO L175 Difference]: Start difference. First operand has 262 places, 217 transitions, 1885 flow. Second operand 11 states and 145 transitions. [2024-06-21 19:16:23,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 232 transitions, 2397 flow [2024-06-21 19:16:23,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 232 transitions, 2291 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-21 19:16:23,512 INFO L231 Difference]: Finished difference. Result has 264 places, 218 transitions, 1883 flow [2024-06-21 19:16:23,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1779, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1883, PETRI_PLACES=264, PETRI_TRANSITIONS=218} [2024-06-21 19:16:23,513 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 233 predicate places. [2024-06-21 19:16:23,513 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 218 transitions, 1883 flow [2024-06-21 19:16:23,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:23,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:23,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:23,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-21 19:16:23,513 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:23,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:23,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1022644925, now seen corresponding path program 7 times [2024-06-21 19:16:23,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:23,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911124347] [2024-06-21 19:16:23,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:23,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:25,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:25,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:25,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911124347] [2024-06-21 19:16:25,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911124347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:25,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:25,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:16:25,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328440209] [2024-06-21 19:16:25,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:25,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:16:25,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:25,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:16:25,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:16:25,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:16:25,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 218 transitions, 1883 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:25,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:25,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:16:25,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:25,941 INFO L124 PetriNetUnfolderBase]: 467/924 cut-off events. [2024-06-21 19:16:25,941 INFO L125 PetriNetUnfolderBase]: For 51702/51702 co-relation queries the response was YES. [2024-06-21 19:16:25,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4792 conditions, 924 events. 467/924 cut-off events. For 51702/51702 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5279 event pairs, 53 based on Foata normal form. 2/925 useless extension candidates. Maximal degree in co-relation 4684. Up to 754 conditions per place. [2024-06-21 19:16:25,949 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 187 selfloop transitions, 44 changer transitions 0/235 dead transitions. [2024-06-21 19:16:25,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 235 transitions, 2409 flow [2024-06-21 19:16:25,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:25,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:25,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 19:16:25,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-21 19:16:25,950 INFO L175 Difference]: Start difference. First operand has 264 places, 218 transitions, 1883 flow. Second operand 11 states and 146 transitions. [2024-06-21 19:16:25,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 235 transitions, 2409 flow [2024-06-21 19:16:26,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 235 transitions, 2315 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-21 19:16:26,082 INFO L231 Difference]: Finished difference. Result has 267 places, 220 transitions, 1919 flow [2024-06-21 19:16:26,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1789, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1919, PETRI_PLACES=267, PETRI_TRANSITIONS=220} [2024-06-21 19:16:26,082 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-21 19:16:26,082 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 220 transitions, 1919 flow [2024-06-21 19:16:26,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:26,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:26,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:26,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-21 19:16:26,083 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:26,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:26,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1816934459, now seen corresponding path program 8 times [2024-06-21 19:16:26,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:26,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578676623] [2024-06-21 19:16:26,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:26,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:27,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:27,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:27,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578676623] [2024-06-21 19:16:27,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578676623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:27,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:27,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:16:27,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827643941] [2024-06-21 19:16:27,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:27,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:16:27,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:27,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:16:27,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:16:27,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:16:27,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 220 transitions, 1919 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:27,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:27,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:16:27,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:28,535 INFO L124 PetriNetUnfolderBase]: 471/930 cut-off events. [2024-06-21 19:16:28,535 INFO L125 PetriNetUnfolderBase]: For 52990/52990 co-relation queries the response was YES. [2024-06-21 19:16:28,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4875 conditions, 930 events. 471/930 cut-off events. For 52990/52990 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5308 event pairs, 61 based on Foata normal form. 2/931 useless extension candidates. Maximal degree in co-relation 4765. Up to 782 conditions per place. [2024-06-21 19:16:28,544 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 191 selfloop transitions, 40 changer transitions 0/235 dead transitions. [2024-06-21 19:16:28,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 235 transitions, 2441 flow [2024-06-21 19:16:28,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:28,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:28,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 19:16:28,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-21 19:16:28,545 INFO L175 Difference]: Start difference. First operand has 267 places, 220 transitions, 1919 flow. Second operand 11 states and 146 transitions. [2024-06-21 19:16:28,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 235 transitions, 2441 flow [2024-06-21 19:16:28,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 235 transitions, 2339 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-21 19:16:28,708 INFO L231 Difference]: Finished difference. Result has 270 places, 221 transitions, 1929 flow [2024-06-21 19:16:28,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1817, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1929, PETRI_PLACES=270, PETRI_TRANSITIONS=221} [2024-06-21 19:16:28,708 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 239 predicate places. [2024-06-21 19:16:28,708 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 221 transitions, 1929 flow [2024-06-21 19:16:28,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:28,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:28,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:28,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-21 19:16:28,709 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:28,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:28,709 INFO L85 PathProgramCache]: Analyzing trace with hash 2068257847, now seen corresponding path program 9 times [2024-06-21 19:16:28,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:28,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096131603] [2024-06-21 19:16:28,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:28,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:30,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:30,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:30,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096131603] [2024-06-21 19:16:30,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096131603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:30,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:30,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:16:30,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969573288] [2024-06-21 19:16:30,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:30,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:16:30,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:30,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:16:30,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:16:30,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:16:30,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 221 transitions, 1929 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:30,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:30,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:16:30,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:31,525 INFO L124 PetriNetUnfolderBase]: 479/946 cut-off events. [2024-06-21 19:16:31,525 INFO L125 PetriNetUnfolderBase]: For 54313/54313 co-relation queries the response was YES. [2024-06-21 19:16:31,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4943 conditions, 946 events. 479/946 cut-off events. For 54313/54313 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5443 event pairs, 63 based on Foata normal form. 2/947 useless extension candidates. Maximal degree in co-relation 4832. Up to 784 conditions per place. [2024-06-21 19:16:31,533 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 193 selfloop transitions, 41 changer transitions 0/238 dead transitions. [2024-06-21 19:16:31,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 238 transitions, 2467 flow [2024-06-21 19:16:31,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:31,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:31,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-21 19:16:31,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-21 19:16:31,534 INFO L175 Difference]: Start difference. First operand has 270 places, 221 transitions, 1929 flow. Second operand 11 states and 148 transitions. [2024-06-21 19:16:31,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 238 transitions, 2467 flow [2024-06-21 19:16:31,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 238 transitions, 2365 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-21 19:16:31,697 INFO L231 Difference]: Finished difference. Result has 273 places, 223 transitions, 1955 flow [2024-06-21 19:16:31,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1827, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1955, PETRI_PLACES=273, PETRI_TRANSITIONS=223} [2024-06-21 19:16:31,698 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 242 predicate places. [2024-06-21 19:16:31,698 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 223 transitions, 1955 flow [2024-06-21 19:16:31,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:31,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:31,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:31,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-21 19:16:31,698 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:31,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:31,698 INFO L85 PathProgramCache]: Analyzing trace with hash 2063673877, now seen corresponding path program 10 times [2024-06-21 19:16:31,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:31,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638064604] [2024-06-21 19:16:31,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:31,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:34,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:34,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:34,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638064604] [2024-06-21 19:16:34,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638064604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:34,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:34,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:34,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091915370] [2024-06-21 19:16:34,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:34,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:34,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:34,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:34,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:34,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:16:34,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 223 transitions, 1955 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:34,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:34,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:16:34,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:34,725 INFO L124 PetriNetUnfolderBase]: 483/954 cut-off events. [2024-06-21 19:16:34,725 INFO L125 PetriNetUnfolderBase]: For 55710/55710 co-relation queries the response was YES. [2024-06-21 19:16:34,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5012 conditions, 954 events. 483/954 cut-off events. For 55710/55710 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5495 event pairs, 63 based on Foata normal form. 2/955 useless extension candidates. Maximal degree in co-relation 4899. Up to 744 conditions per place. [2024-06-21 19:16:34,732 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 192 selfloop transitions, 45 changer transitions 0/241 dead transitions. [2024-06-21 19:16:34,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 241 transitions, 2507 flow [2024-06-21 19:16:34,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:34,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:34,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-21 19:16:34,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-21 19:16:34,734 INFO L175 Difference]: Start difference. First operand has 273 places, 223 transitions, 1955 flow. Second operand 11 states and 148 transitions. [2024-06-21 19:16:34,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 241 transitions, 2507 flow [2024-06-21 19:16:34,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 241 transitions, 2403 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-21 19:16:34,904 INFO L231 Difference]: Finished difference. Result has 277 places, 225 transitions, 2001 flow [2024-06-21 19:16:34,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2001, PETRI_PLACES=277, PETRI_TRANSITIONS=225} [2024-06-21 19:16:34,905 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 246 predicate places. [2024-06-21 19:16:34,905 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 225 transitions, 2001 flow [2024-06-21 19:16:34,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:34,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:34,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:34,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-21 19:16:34,905 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:34,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:34,906 INFO L85 PathProgramCache]: Analyzing trace with hash 856595719, now seen corresponding path program 2 times [2024-06-21 19:16:34,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:34,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748969739] [2024-06-21 19:16:34,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:34,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:36,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:36,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:36,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748969739] [2024-06-21 19:16:36,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748969739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:36,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:36,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:16:36,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353591001] [2024-06-21 19:16:36,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:36,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:16:36,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:36,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:16:36,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:16:37,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:16:37,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 225 transitions, 2001 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:37,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:37,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:16:37,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:37,789 INFO L124 PetriNetUnfolderBase]: 486/961 cut-off events. [2024-06-21 19:16:37,790 INFO L125 PetriNetUnfolderBase]: For 53507/53507 co-relation queries the response was YES. [2024-06-21 19:16:37,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5111 conditions, 961 events. 486/961 cut-off events. For 53507/53507 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5536 event pairs, 65 based on Foata normal form. 1/961 useless extension candidates. Maximal degree in co-relation 4996. Up to 748 conditions per place. [2024-06-21 19:16:37,798 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 174 selfloop transitions, 61 changer transitions 0/239 dead transitions. [2024-06-21 19:16:37,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 239 transitions, 2543 flow [2024-06-21 19:16:37,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:37,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:37,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 157 transitions. [2024-06-21 19:16:37,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460227272727273 [2024-06-21 19:16:37,799 INFO L175 Difference]: Start difference. First operand has 277 places, 225 transitions, 2001 flow. Second operand 11 states and 157 transitions. [2024-06-21 19:16:37,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 239 transitions, 2543 flow [2024-06-21 19:16:37,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 239 transitions, 2419 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-21 19:16:37,965 INFO L231 Difference]: Finished difference. Result has 279 places, 227 transitions, 2052 flow [2024-06-21 19:16:37,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1877, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2052, PETRI_PLACES=279, PETRI_TRANSITIONS=227} [2024-06-21 19:16:37,965 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-21 19:16:37,965 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 227 transitions, 2052 flow [2024-06-21 19:16:37,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:37,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:37,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:37,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-21 19:16:37,966 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:37,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:37,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1318511353, now seen corresponding path program 3 times [2024-06-21 19:16:37,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:37,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046224197] [2024-06-21 19:16:37,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:37,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:40,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:40,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:40,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046224197] [2024-06-21 19:16:40,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046224197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:40,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:40,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:16:40,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307622709] [2024-06-21 19:16:40,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:40,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:16:40,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:40,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:16:40,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:16:40,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:16:40,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 227 transitions, 2052 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:40,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:40,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:16:40,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:40,798 INFO L124 PetriNetUnfolderBase]: 489/966 cut-off events. [2024-06-21 19:16:40,798 INFO L125 PetriNetUnfolderBase]: For 54451/54451 co-relation queries the response was YES. [2024-06-21 19:16:40,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5137 conditions, 966 events. 489/966 cut-off events. For 54451/54451 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5584 event pairs, 65 based on Foata normal form. 1/966 useless extension candidates. Maximal degree in co-relation 5023. Up to 801 conditions per place. [2024-06-21 19:16:40,806 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 183 selfloop transitions, 54 changer transitions 0/241 dead transitions. [2024-06-21 19:16:40,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 241 transitions, 2602 flow [2024-06-21 19:16:40,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:40,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:40,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 155 transitions. [2024-06-21 19:16:40,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-21 19:16:40,807 INFO L175 Difference]: Start difference. First operand has 279 places, 227 transitions, 2052 flow. Second operand 11 states and 155 transitions. [2024-06-21 19:16:40,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 241 transitions, 2602 flow [2024-06-21 19:16:40,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 241 transitions, 2443 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-21 19:16:40,981 INFO L231 Difference]: Finished difference. Result has 281 places, 229 transitions, 2058 flow [2024-06-21 19:16:40,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1893, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2058, PETRI_PLACES=281, PETRI_TRANSITIONS=229} [2024-06-21 19:16:40,981 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-21 19:16:40,981 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 229 transitions, 2058 flow [2024-06-21 19:16:40,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:40,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:40,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:40,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-21 19:16:40,982 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:40,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:40,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1327082233, now seen corresponding path program 4 times [2024-06-21 19:16:40,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:40,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739287394] [2024-06-21 19:16:40,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:40,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:42,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:42,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:42,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739287394] [2024-06-21 19:16:42,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739287394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:42,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:42,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:42,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812487013] [2024-06-21 19:16:42,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:42,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:42,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:42,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:42,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:42,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:16:42,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 229 transitions, 2058 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:42,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:42,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:16:42,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:43,332 INFO L124 PetriNetUnfolderBase]: 492/971 cut-off events. [2024-06-21 19:16:43,332 INFO L125 PetriNetUnfolderBase]: For 55596/55596 co-relation queries the response was YES. [2024-06-21 19:16:43,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5179 conditions, 971 events. 492/971 cut-off events. For 55596/55596 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5607 event pairs, 65 based on Foata normal form. 1/971 useless extension candidates. Maximal degree in co-relation 5064. Up to 758 conditions per place. [2024-06-21 19:16:43,344 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 170 selfloop transitions, 69 changer transitions 0/243 dead transitions. [2024-06-21 19:16:43,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 243 transitions, 2616 flow [2024-06-21 19:16:43,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:43,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:43,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 155 transitions. [2024-06-21 19:16:43,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-21 19:16:43,346 INFO L175 Difference]: Start difference. First operand has 281 places, 229 transitions, 2058 flow. Second operand 11 states and 155 transitions. [2024-06-21 19:16:43,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 243 transitions, 2616 flow [2024-06-21 19:16:43,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 243 transitions, 2467 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-21 19:16:43,517 INFO L231 Difference]: Finished difference. Result has 283 places, 231 transitions, 2108 flow [2024-06-21 19:16:43,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1909, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2108, PETRI_PLACES=283, PETRI_TRANSITIONS=231} [2024-06-21 19:16:43,517 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 252 predicate places. [2024-06-21 19:16:43,518 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 231 transitions, 2108 flow [2024-06-21 19:16:43,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:43,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:43,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:43,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-21 19:16:43,518 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:43,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:43,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1630883317, now seen corresponding path program 5 times [2024-06-21 19:16:43,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:43,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503475591] [2024-06-21 19:16:43,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:43,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:45,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:45,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:45,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503475591] [2024-06-21 19:16:45,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503475591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:45,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:45,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:16:45,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329010465] [2024-06-21 19:16:45,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:45,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:16:45,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:45,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:16:45,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:16:45,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:16:45,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 231 transitions, 2108 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:45,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:45,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:16:45,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:46,168 INFO L124 PetriNetUnfolderBase]: 495/976 cut-off events. [2024-06-21 19:16:46,169 INFO L125 PetriNetUnfolderBase]: For 56957/56957 co-relation queries the response was YES. [2024-06-21 19:16:46,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5265 conditions, 976 events. 495/976 cut-off events. For 56957/56957 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5646 event pairs, 67 based on Foata normal form. 1/976 useless extension candidates. Maximal degree in co-relation 5149. Up to 763 conditions per place. [2024-06-21 19:16:46,182 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 177 selfloop transitions, 64 changer transitions 0/245 dead transitions. [2024-06-21 19:16:46,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 245 transitions, 2674 flow [2024-06-21 19:16:46,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:46,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:46,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 156 transitions. [2024-06-21 19:16:46,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-21 19:16:46,183 INFO L175 Difference]: Start difference. First operand has 283 places, 231 transitions, 2108 flow. Second operand 11 states and 156 transitions. [2024-06-21 19:16:46,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 245 transitions, 2674 flow [2024-06-21 19:16:46,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 245 transitions, 2491 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-21 19:16:46,353 INFO L231 Difference]: Finished difference. Result has 285 places, 233 transitions, 2118 flow [2024-06-21 19:16:46,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1925, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2118, PETRI_PLACES=285, PETRI_TRANSITIONS=233} [2024-06-21 19:16:46,353 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-21 19:16:46,353 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 233 transitions, 2118 flow [2024-06-21 19:16:46,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:46,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:46,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:46,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-21 19:16:46,354 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:46,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:46,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1326851593, now seen corresponding path program 6 times [2024-06-21 19:16:46,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:46,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286870289] [2024-06-21 19:16:46,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:46,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:48,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:48,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:48,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286870289] [2024-06-21 19:16:48,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286870289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:48,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:48,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:16:48,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971216830] [2024-06-21 19:16:48,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:48,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:16:48,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:48,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:16:48,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:16:48,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:16:48,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 233 transitions, 2118 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:48,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:48,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:16:48,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:48,779 INFO L124 PetriNetUnfolderBase]: 498/981 cut-off events. [2024-06-21 19:16:48,779 INFO L125 PetriNetUnfolderBase]: For 58294/58294 co-relation queries the response was YES. [2024-06-21 19:16:48,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5311 conditions, 981 events. 498/981 cut-off events. For 58294/58294 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5650 event pairs, 67 based on Foata normal form. 1/981 useless extension candidates. Maximal degree in co-relation 5194. Up to 768 conditions per place. [2024-06-21 19:16:48,786 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 167 selfloop transitions, 76 changer transitions 0/247 dead transitions. [2024-06-21 19:16:48,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 247 transitions, 2692 flow [2024-06-21 19:16:48,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:48,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:48,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-21 19:16:48,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 19:16:48,787 INFO L175 Difference]: Start difference. First operand has 285 places, 233 transitions, 2118 flow. Second operand 11 states and 154 transitions. [2024-06-21 19:16:48,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 247 transitions, 2692 flow [2024-06-21 19:16:48,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 247 transitions, 2515 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-21 19:16:48,953 INFO L231 Difference]: Finished difference. Result has 287 places, 235 transitions, 2162 flow [2024-06-21 19:16:48,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1941, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2162, PETRI_PLACES=287, PETRI_TRANSITIONS=235} [2024-06-21 19:16:48,953 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 256 predicate places. [2024-06-21 19:16:48,954 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 235 transitions, 2162 flow [2024-06-21 19:16:48,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:48,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:48,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:48,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-21 19:16:48,954 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:48,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:48,955 INFO L85 PathProgramCache]: Analyzing trace with hash -182129463, now seen corresponding path program 11 times [2024-06-21 19:16:48,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:48,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545945995] [2024-06-21 19:16:48,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:48,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:50,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:50,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:50,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545945995] [2024-06-21 19:16:50,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545945995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:50,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:50,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:16:50,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827635440] [2024-06-21 19:16:50,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:50,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:16:50,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:50,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:16:50,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:16:50,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:16:50,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 235 transitions, 2162 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:50,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:50,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:16:50,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:50,758 INFO L124 PetriNetUnfolderBase]: 502/990 cut-off events. [2024-06-21 19:16:50,758 INFO L125 PetriNetUnfolderBase]: For 63735/63735 co-relation queries the response was YES. [2024-06-21 19:16:50,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5398 conditions, 990 events. 502/990 cut-off events. For 63735/63735 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5739 event pairs, 69 based on Foata normal form. 2/991 useless extension candidates. Maximal degree in co-relation 5280. Up to 856 conditions per place. [2024-06-21 19:16:50,768 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 231 selfloop transitions, 22 changer transitions 0/257 dead transitions. [2024-06-21 19:16:50,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 257 transitions, 2762 flow [2024-06-21 19:16:50,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:50,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:50,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 19:16:50,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 19:16:50,769 INFO L175 Difference]: Start difference. First operand has 287 places, 235 transitions, 2162 flow. Second operand 11 states and 143 transitions. [2024-06-21 19:16:50,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 257 transitions, 2762 flow [2024-06-21 19:16:50,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 257 transitions, 2557 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-21 19:16:50,976 INFO L231 Difference]: Finished difference. Result has 290 places, 237 transitions, 2055 flow [2024-06-21 19:16:50,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1957, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2055, PETRI_PLACES=290, PETRI_TRANSITIONS=237} [2024-06-21 19:16:50,976 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 259 predicate places. [2024-06-21 19:16:50,976 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 237 transitions, 2055 flow [2024-06-21 19:16:50,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:50,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:50,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:50,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-21 19:16:50,977 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:50,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:50,977 INFO L85 PathProgramCache]: Analyzing trace with hash 691889455, now seen corresponding path program 12 times [2024-06-21 19:16:50,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:50,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848971303] [2024-06-21 19:16:50,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:50,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:52,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:52,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:52,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848971303] [2024-06-21 19:16:52,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848971303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:52,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:52,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:16:52,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708640784] [2024-06-21 19:16:52,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:52,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:16:52,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:52,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:16:52,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:16:52,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:16:52,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 237 transitions, 2055 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:52,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:52,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:16:52,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:52,988 INFO L124 PetriNetUnfolderBase]: 517/1019 cut-off events. [2024-06-21 19:16:52,988 INFO L125 PetriNetUnfolderBase]: For 73986/73986 co-relation queries the response was YES. [2024-06-21 19:16:52,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5708 conditions, 1019 events. 517/1019 cut-off events. For 73986/73986 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5923 event pairs, 77 based on Foata normal form. 2/1020 useless extension candidates. Maximal degree in co-relation 5588. Up to 869 conditions per place. [2024-06-21 19:16:52,996 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 230 selfloop transitions, 26 changer transitions 0/260 dead transitions. [2024-06-21 19:16:52,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 260 transitions, 2885 flow [2024-06-21 19:16:52,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:52,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:52,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 19:16:52,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-21 19:16:52,998 INFO L175 Difference]: Start difference. First operand has 290 places, 237 transitions, 2055 flow. Second operand 11 states and 147 transitions. [2024-06-21 19:16:52,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 260 transitions, 2885 flow [2024-06-21 19:16:53,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 260 transitions, 2805 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-21 19:16:53,227 INFO L231 Difference]: Finished difference. Result has 295 places, 241 transitions, 2132 flow [2024-06-21 19:16:53,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1975, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2132, PETRI_PLACES=295, PETRI_TRANSITIONS=241} [2024-06-21 19:16:53,227 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-21 19:16:53,228 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 241 transitions, 2132 flow [2024-06-21 19:16:53,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:53,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:53,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:53,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-21 19:16:53,228 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:53,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:53,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1726974229, now seen corresponding path program 13 times [2024-06-21 19:16:53,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:53,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079519858] [2024-06-21 19:16:53,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:53,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:54,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:54,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:54,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079519858] [2024-06-21 19:16:54,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079519858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:54,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:54,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:16:54,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587320639] [2024-06-21 19:16:54,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:54,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:16:54,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:54,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:16:54,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:16:54,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:16:54,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 241 transitions, 2132 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:54,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:54,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:16:54,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:55,382 INFO L124 PetriNetUnfolderBase]: 521/1027 cut-off events. [2024-06-21 19:16:55,382 INFO L125 PetriNetUnfolderBase]: For 76034/76034 co-relation queries the response was YES. [2024-06-21 19:16:55,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5800 conditions, 1027 events. 521/1027 cut-off events. For 76034/76034 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5992 event pairs, 84 based on Foata normal form. 2/1028 useless extension candidates. Maximal degree in co-relation 5677. Up to 895 conditions per place. [2024-06-21 19:16:55,391 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 230 selfloop transitions, 26 changer transitions 0/260 dead transitions. [2024-06-21 19:16:55,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 260 transitions, 2911 flow [2024-06-21 19:16:55,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:55,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:55,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-21 19:16:55,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-21 19:16:55,393 INFO L175 Difference]: Start difference. First operand has 295 places, 241 transitions, 2132 flow. Second operand 11 states and 145 transitions. [2024-06-21 19:16:55,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 260 transitions, 2911 flow [2024-06-21 19:16:55,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 260 transitions, 2833 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-21 19:16:55,631 INFO L231 Difference]: Finished difference. Result has 300 places, 242 transitions, 2147 flow [2024-06-21 19:16:55,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2147, PETRI_PLACES=300, PETRI_TRANSITIONS=242} [2024-06-21 19:16:55,631 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 269 predicate places. [2024-06-21 19:16:55,631 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 242 transitions, 2147 flow [2024-06-21 19:16:55,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:55,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:55,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:55,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-21 19:16:55,632 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:55,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:55,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1726796599, now seen corresponding path program 14 times [2024-06-21 19:16:55,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:55,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945627684] [2024-06-21 19:16:55,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:55,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:57,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:57,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:57,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945627684] [2024-06-21 19:16:57,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945627684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:57,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:57,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:16:57,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741512514] [2024-06-21 19:16:57,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:57,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:16:57,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:57,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:16:57,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:16:57,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:16:57,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 242 transitions, 2147 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:57,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:57,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:16:57,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:57,578 INFO L124 PetriNetUnfolderBase]: 518/1022 cut-off events. [2024-06-21 19:16:57,578 INFO L125 PetriNetUnfolderBase]: For 68205/68205 co-relation queries the response was YES. [2024-06-21 19:16:57,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5534 conditions, 1022 events. 518/1022 cut-off events. For 68205/68205 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5964 event pairs, 88 based on Foata normal form. 2/1023 useless extension candidates. Maximal degree in co-relation 5409. Up to 907 conditions per place. [2024-06-21 19:16:57,588 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 229 selfloop transitions, 25 changer transitions 0/258 dead transitions. [2024-06-21 19:16:57,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 258 transitions, 2695 flow [2024-06-21 19:16:57,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:57,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:57,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 19:16:57,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-21 19:16:57,589 INFO L175 Difference]: Start difference. First operand has 300 places, 242 transitions, 2147 flow. Second operand 11 states and 142 transitions. [2024-06-21 19:16:57,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 258 transitions, 2695 flow [2024-06-21 19:16:57,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 258 transitions, 2585 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-21 19:16:57,820 INFO L231 Difference]: Finished difference. Result has 302 places, 242 transitions, 2091 flow [2024-06-21 19:16:57,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2037, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2091, PETRI_PLACES=302, PETRI_TRANSITIONS=242} [2024-06-21 19:16:57,820 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 271 predicate places. [2024-06-21 19:16:57,821 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 242 transitions, 2091 flow [2024-06-21 19:16:57,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:57,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:57,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:57,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-21 19:16:57,821 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:57,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:57,821 INFO L85 PathProgramCache]: Analyzing trace with hash -710035443, now seen corresponding path program 15 times [2024-06-21 19:16:57,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:57,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642256349] [2024-06-21 19:16:57,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:57,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:59,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:59,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:59,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642256349] [2024-06-21 19:16:59,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642256349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:59,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:59,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:16:59,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357260377] [2024-06-21 19:16:59,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:59,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:16:59,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:59,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:16:59,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:16:59,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-21 19:16:59,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 242 transitions, 2091 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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) [2024-06-21 19:16:59,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:59,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-21 19:16:59,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:59,495 INFO L124 PetriNetUnfolderBase]: 483/990 cut-off events. [2024-06-21 19:16:59,495 INFO L125 PetriNetUnfolderBase]: For 70178/70181 co-relation queries the response was YES. [2024-06-21 19:16:59,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5219 conditions, 990 events. 483/990 cut-off events. For 70178/70181 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5961 event pairs, 25 based on Foata normal form. 4/992 useless extension candidates. Maximal degree in co-relation 5094. Up to 617 conditions per place. [2024-06-21 19:16:59,505 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 152 selfloop transitions, 34 changer transitions 0/261 dead transitions. [2024-06-21 19:16:59,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 261 transitions, 2555 flow [2024-06-21 19:16:59,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:16:59,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:16:59,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2024-06-21 19:16:59,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-21 19:16:59,506 INFO L175 Difference]: Start difference. First operand has 302 places, 242 transitions, 2091 flow. Second operand 10 states and 145 transitions. [2024-06-21 19:16:59,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 261 transitions, 2555 flow [2024-06-21 19:16:59,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 261 transitions, 2507 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 19:16:59,733 INFO L231 Difference]: Finished difference. Result has 304 places, 244 transitions, 2187 flow [2024-06-21 19:16:59,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2043, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2187, PETRI_PLACES=304, PETRI_TRANSITIONS=244} [2024-06-21 19:16:59,733 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-21 19:16:59,733 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 244 transitions, 2187 flow [2024-06-21 19:16:59,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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) [2024-06-21 19:16:59,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:59,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:59,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-21 19:16:59,734 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:16:59,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:59,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1967630933, now seen corresponding path program 16 times [2024-06-21 19:16:59,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:59,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345763075] [2024-06-21 19:16:59,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:59,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:01,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:01,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:01,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345763075] [2024-06-21 19:17:01,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345763075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:01,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:01,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:01,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202264094] [2024-06-21 19:17:01,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:01,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:01,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:01,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:01,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:01,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:17:01,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 244 transitions, 2187 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:01,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:01,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:17:01,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:01,806 INFO L124 PetriNetUnfolderBase]: 537/1057 cut-off events. [2024-06-21 19:17:01,806 INFO L125 PetriNetUnfolderBase]: For 81427/81427 co-relation queries the response was YES. [2024-06-21 19:17:01,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6061 conditions, 1057 events. 537/1057 cut-off events. For 81427/81427 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6229 event pairs, 82 based on Foata normal form. 2/1054 useless extension candidates. Maximal degree in co-relation 5934. Up to 927 conditions per place. [2024-06-21 19:17:01,815 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 232 selfloop transitions, 25 changer transitions 0/261 dead transitions. [2024-06-21 19:17:01,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 261 transitions, 3007 flow [2024-06-21 19:17:01,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:17:01,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:17:01,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-21 19:17:01,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-21 19:17:01,817 INFO L175 Difference]: Start difference. First operand has 304 places, 244 transitions, 2187 flow. Second operand 10 states and 134 transitions. [2024-06-21 19:17:01,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 261 transitions, 3007 flow [2024-06-21 19:17:02,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 261 transitions, 2885 flow, removed 32 selfloop flow, removed 11 redundant places. [2024-06-21 19:17:02,134 INFO L231 Difference]: Finished difference. Result has 304 places, 247 transitions, 2217 flow [2024-06-21 19:17:02,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2079, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2217, PETRI_PLACES=304, PETRI_TRANSITIONS=247} [2024-06-21 19:17:02,135 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-21 19:17:02,135 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 247 transitions, 2217 flow [2024-06-21 19:17:02,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:02,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:02,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:02,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-21 19:17:02,136 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:02,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:02,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1967808563, now seen corresponding path program 17 times [2024-06-21 19:17:02,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:02,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405483712] [2024-06-21 19:17:02,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:02,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:03,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:03,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:03,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405483712] [2024-06-21 19:17:03,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405483712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:03,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:03,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:03,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070126884] [2024-06-21 19:17:03,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:03,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:03,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:03,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:03,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:03,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:17:03,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 247 transitions, 2217 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:03,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:03,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:17:03,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:04,217 INFO L124 PetriNetUnfolderBase]: 534/1052 cut-off events. [2024-06-21 19:17:04,218 INFO L125 PetriNetUnfolderBase]: For 65822/65822 co-relation queries the response was YES. [2024-06-21 19:17:04,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5661 conditions, 1052 events. 534/1052 cut-off events. For 65822/65822 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6174 event pairs, 83 based on Foata normal form. 2/1049 useless extension candidates. Maximal degree in co-relation 5536. Up to 939 conditions per place. [2024-06-21 19:17:04,228 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 231 selfloop transitions, 24 changer transitions 0/259 dead transitions. [2024-06-21 19:17:04,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 259 transitions, 2757 flow [2024-06-21 19:17:04,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:17:04,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:17:04,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-21 19:17:04,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-21 19:17:04,231 INFO L175 Difference]: Start difference. First operand has 304 places, 247 transitions, 2217 flow. Second operand 10 states and 131 transitions. [2024-06-21 19:17:04,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 259 transitions, 2757 flow [2024-06-21 19:17:04,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 259 transitions, 2659 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-21 19:17:04,447 INFO L231 Difference]: Finished difference. Result has 308 places, 247 transitions, 2171 flow [2024-06-21 19:17:04,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2171, PETRI_PLACES=308, PETRI_TRANSITIONS=247} [2024-06-21 19:17:04,448 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-21 19:17:04,448 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 247 transitions, 2171 flow [2024-06-21 19:17:04,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:04,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:04,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:04,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-21 19:17:04,449 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:04,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:04,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1963046963, now seen corresponding path program 18 times [2024-06-21 19:17:04,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:04,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287590146] [2024-06-21 19:17:04,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:04,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:06,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:06,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:06,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287590146] [2024-06-21 19:17:06,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287590146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:06,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:06,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:06,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293713099] [2024-06-21 19:17:06,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:06,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:06,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:06,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:06,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:06,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:17:06,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 247 transitions, 2171 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:06,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:06,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:17:06,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:06,960 INFO L124 PetriNetUnfolderBase]: 538/1060 cut-off events. [2024-06-21 19:17:06,960 INFO L125 PetriNetUnfolderBase]: For 66575/66575 co-relation queries the response was YES. [2024-06-21 19:17:06,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5667 conditions, 1060 events. 538/1060 cut-off events. For 66575/66575 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6237 event pairs, 81 based on Foata normal form. 2/1057 useless extension candidates. Maximal degree in co-relation 5540. Up to 911 conditions per place. [2024-06-21 19:17:06,971 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 233 selfloop transitions, 26 changer transitions 0/263 dead transitions. [2024-06-21 19:17:06,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 263 transitions, 2777 flow [2024-06-21 19:17:06,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:06,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:06,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 19:17:06,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 19:17:06,972 INFO L175 Difference]: Start difference. First operand has 308 places, 247 transitions, 2171 flow. Second operand 11 states and 143 transitions. [2024-06-21 19:17:06,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 263 transitions, 2777 flow [2024-06-21 19:17:07,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 263 transitions, 2731 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-21 19:17:07,238 INFO L231 Difference]: Finished difference. Result has 312 places, 249 transitions, 2245 flow [2024-06-21 19:17:07,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2125, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2245, PETRI_PLACES=312, PETRI_TRANSITIONS=249} [2024-06-21 19:17:07,239 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 281 predicate places. [2024-06-21 19:17:07,239 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 249 transitions, 2245 flow [2024-06-21 19:17:07,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:07,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:07,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:07,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-21 19:17:07,239 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:07,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:07,240 INFO L85 PathProgramCache]: Analyzing trace with hash -782491597, now seen corresponding path program 19 times [2024-06-21 19:17:07,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:07,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899387825] [2024-06-21 19:17:07,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:07,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:08,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:08,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:08,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899387825] [2024-06-21 19:17:08,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899387825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:08,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:08,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:08,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400786274] [2024-06-21 19:17:08,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:08,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:08,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:08,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:08,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:08,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:17:08,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 249 transitions, 2245 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:08,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:08,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:17:08,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:09,215 INFO L124 PetriNetUnfolderBase]: 542/1068 cut-off events. [2024-06-21 19:17:09,215 INFO L125 PetriNetUnfolderBase]: For 68853/68853 co-relation queries the response was YES. [2024-06-21 19:17:09,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5822 conditions, 1068 events. 542/1068 cut-off events. For 68853/68853 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6318 event pairs, 81 based on Foata normal form. 2/1065 useless extension candidates. Maximal degree in co-relation 5693. Up to 936 conditions per place. [2024-06-21 19:17:09,225 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 242 selfloop transitions, 21 changer transitions 0/267 dead transitions. [2024-06-21 19:17:09,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 267 transitions, 2869 flow [2024-06-21 19:17:09,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:09,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:09,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-21 19:17:09,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-21 19:17:09,226 INFO L175 Difference]: Start difference. First operand has 312 places, 249 transitions, 2245 flow. Second operand 11 states and 140 transitions. [2024-06-21 19:17:09,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 267 transitions, 2869 flow [2024-06-21 19:17:09,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 267 transitions, 2771 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-21 19:17:09,484 INFO L231 Difference]: Finished difference. Result has 316 places, 251 transitions, 2257 flow [2024-06-21 19:17:09,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2147, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2257, PETRI_PLACES=316, PETRI_TRANSITIONS=251} [2024-06-21 19:17:09,485 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-21 19:17:09,485 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 251 transitions, 2257 flow [2024-06-21 19:17:09,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:09,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:09,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:09,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-21 19:17:09,486 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:09,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:09,486 INFO L85 PathProgramCache]: Analyzing trace with hash 294198089, now seen corresponding path program 20 times [2024-06-21 19:17:09,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:09,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917307020] [2024-06-21 19:17:09,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:09,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:11,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:11,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:11,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917307020] [2024-06-21 19:17:11,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917307020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:11,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:11,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:11,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899668001] [2024-06-21 19:17:11,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:11,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:11,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:11,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:11,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:11,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:17:11,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 251 transitions, 2257 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:11,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:11,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:17:11,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:11,914 INFO L124 PetriNetUnfolderBase]: 557/1097 cut-off events. [2024-06-21 19:17:11,914 INFO L125 PetriNetUnfolderBase]: For 80249/80249 co-relation queries the response was YES. [2024-06-21 19:17:11,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6200 conditions, 1097 events. 557/1097 cut-off events. For 80249/80249 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6505 event pairs, 90 based on Foata normal form. 2/1094 useless extension candidates. Maximal degree in co-relation 6070. Up to 940 conditions per place. [2024-06-21 19:17:11,925 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 226 selfloop transitions, 37 changer transitions 0/267 dead transitions. [2024-06-21 19:17:11,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 267 transitions, 3091 flow [2024-06-21 19:17:11,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:17:11,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:17:11,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-21 19:17:11,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-21 19:17:11,926 INFO L175 Difference]: Start difference. First operand has 316 places, 251 transitions, 2257 flow. Second operand 10 states and 139 transitions. [2024-06-21 19:17:11,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 267 transitions, 3091 flow [2024-06-21 19:17:12,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 267 transitions, 2999 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-21 19:17:12,186 INFO L231 Difference]: Finished difference. Result has 319 places, 254 transitions, 2339 flow [2024-06-21 19:17:12,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2165, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2339, PETRI_PLACES=319, PETRI_TRANSITIONS=254} [2024-06-21 19:17:12,187 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 288 predicate places. [2024-06-21 19:17:12,187 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 254 transitions, 2339 flow [2024-06-21 19:17:12,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:12,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:12,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:12,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-21 19:17:12,188 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:12,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:12,188 INFO L85 PathProgramCache]: Analyzing trace with hash 294375719, now seen corresponding path program 21 times [2024-06-21 19:17:12,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:12,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712615745] [2024-06-21 19:17:12,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:12,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:13,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:13,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:13,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712615745] [2024-06-21 19:17:13,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712615745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:13,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:13,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:13,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834564710] [2024-06-21 19:17:13,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:13,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:13,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:13,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:13,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:14,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:17:14,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 254 transitions, 2339 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:14,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:14,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:17:14,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:14,742 INFO L124 PetriNetUnfolderBase]: 554/1092 cut-off events. [2024-06-21 19:17:14,742 INFO L125 PetriNetUnfolderBase]: For 72116/72116 co-relation queries the response was YES. [2024-06-21 19:17:14,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5926 conditions, 1092 events. 554/1092 cut-off events. For 72116/72116 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6482 event pairs, 91 based on Foata normal form. 2/1089 useless extension candidates. Maximal degree in co-relation 5794. Up to 952 conditions per place. [2024-06-21 19:17:14,753 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 225 selfloop transitions, 36 changer transitions 0/265 dead transitions. [2024-06-21 19:17:14,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 265 transitions, 2887 flow [2024-06-21 19:17:14,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:14,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:14,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 19:17:14,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 19:17:14,754 INFO L175 Difference]: Start difference. First operand has 319 places, 254 transitions, 2339 flow. Second operand 11 states and 144 transitions. [2024-06-21 19:17:14,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 265 transitions, 2887 flow [2024-06-21 19:17:15,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 265 transitions, 2762 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-21 19:17:15,065 INFO L231 Difference]: Finished difference. Result has 324 places, 254 transitions, 2290 flow [2024-06-21 19:17:15,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2214, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2290, PETRI_PLACES=324, PETRI_TRANSITIONS=254} [2024-06-21 19:17:15,065 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-21 19:17:15,065 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 254 transitions, 2290 flow [2024-06-21 19:17:15,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:15,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:15,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:15,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-21 19:17:15,066 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:15,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:15,066 INFO L85 PathProgramCache]: Analyzing trace with hash 289614119, now seen corresponding path program 22 times [2024-06-21 19:17:15,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:15,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964096828] [2024-06-21 19:17:15,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:15,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:16,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:16,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:16,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964096828] [2024-06-21 19:17:16,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964096828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:16,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:16,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:16,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406388266] [2024-06-21 19:17:16,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:16,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:16,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:16,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:16,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:16,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:17:16,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 254 transitions, 2290 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:16,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:16,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:17:16,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:17,449 INFO L124 PetriNetUnfolderBase]: 569/1121 cut-off events. [2024-06-21 19:17:17,449 INFO L125 PetriNetUnfolderBase]: For 83095/83095 co-relation queries the response was YES. [2024-06-21 19:17:17,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6308 conditions, 1121 events. 569/1121 cut-off events. For 83095/83095 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6718 event pairs, 88 based on Foata normal form. 2/1118 useless extension candidates. Maximal degree in co-relation 6174. Up to 924 conditions per place. [2024-06-21 19:17:17,457 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 229 selfloop transitions, 39 changer transitions 0/272 dead transitions. [2024-06-21 19:17:17,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 272 transitions, 3166 flow [2024-06-21 19:17:17,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:17,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:17,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 19:17:17,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-21 19:17:17,459 INFO L175 Difference]: Start difference. First operand has 324 places, 254 transitions, 2290 flow. Second operand 11 states and 147 transitions. [2024-06-21 19:17:17,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 272 transitions, 3166 flow [2024-06-21 19:17:17,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 272 transitions, 3096 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 19:17:17,769 INFO L231 Difference]: Finished difference. Result has 328 places, 258 transitions, 2434 flow [2024-06-21 19:17:17,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2220, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2434, PETRI_PLACES=328, PETRI_TRANSITIONS=258} [2024-06-21 19:17:17,769 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-21 19:17:17,769 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 258 transitions, 2434 flow [2024-06-21 19:17:17,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:17,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:17,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:17,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-21 19:17:17,770 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:17,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:17,770 INFO L85 PathProgramCache]: Analyzing trace with hash -647301833, now seen corresponding path program 23 times [2024-06-21 19:17:17,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:17,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155255514] [2024-06-21 19:17:17,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:17,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:19,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:19,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:19,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155255514] [2024-06-21 19:17:19,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155255514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:19,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:19,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:19,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439305177] [2024-06-21 19:17:19,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:19,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:19,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:19,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:19,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:19,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:17:19,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 258 transitions, 2434 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:19,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:19,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:17:19,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:20,213 INFO L124 PetriNetUnfolderBase]: 573/1129 cut-off events. [2024-06-21 19:17:20,214 INFO L125 PetriNetUnfolderBase]: For 85997/85997 co-relation queries the response was YES. [2024-06-21 19:17:20,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6494 conditions, 1129 events. 573/1129 cut-off events. For 85997/85997 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6771 event pairs, 94 based on Foata normal form. 2/1126 useless extension candidates. Maximal degree in co-relation 6357. Up to 989 conditions per place. [2024-06-21 19:17:20,224 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 229 selfloop transitions, 37 changer transitions 0/270 dead transitions. [2024-06-21 19:17:20,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 270 transitions, 3039 flow [2024-06-21 19:17:20,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:20,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:20,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 19:17:20,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 19:17:20,225 INFO L175 Difference]: Start difference. First operand has 328 places, 258 transitions, 2434 flow. Second operand 11 states and 143 transitions. [2024-06-21 19:17:20,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 270 transitions, 3039 flow [2024-06-21 19:17:20,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 270 transitions, 2920 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-21 19:17:20,560 INFO L231 Difference]: Finished difference. Result has 333 places, 259 transitions, 2442 flow [2024-06-21 19:17:20,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2321, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2442, PETRI_PLACES=333, PETRI_TRANSITIONS=259} [2024-06-21 19:17:20,561 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 302 predicate places. [2024-06-21 19:17:20,561 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 259 transitions, 2442 flow [2024-06-21 19:17:20,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:20,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:20,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:20,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-21 19:17:20,562 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:20,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:20,562 INFO L85 PathProgramCache]: Analyzing trace with hash -2033355113, now seen corresponding path program 24 times [2024-06-21 19:17:20,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:20,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280192885] [2024-06-21 19:17:20,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:20,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:22,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:22,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:22,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280192885] [2024-06-21 19:17:22,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280192885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:22,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:22,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:22,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576346835] [2024-06-21 19:17:22,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:22,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:22,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:22,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:22,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:22,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:17:22,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 259 transitions, 2442 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:22,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:22,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:17:22,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:22,802 INFO L124 PetriNetUnfolderBase]: 577/1137 cut-off events. [2024-06-21 19:17:22,802 INFO L125 PetriNetUnfolderBase]: For 86878/86878 co-relation queries the response was YES. [2024-06-21 19:17:22,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6518 conditions, 1137 events. 577/1137 cut-off events. For 86878/86878 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6821 event pairs, 92 based on Foata normal form. 2/1134 useless extension candidates. Maximal degree in co-relation 6379. Up to 983 conditions per place. [2024-06-21 19:17:22,814 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 234 selfloop transitions, 35 changer transitions 0/273 dead transitions. [2024-06-21 19:17:22,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 273 transitions, 3251 flow [2024-06-21 19:17:22,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:22,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:22,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-21 19:17:22,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-21 19:17:22,815 INFO L175 Difference]: Start difference. First operand has 333 places, 259 transitions, 2442 flow. Second operand 11 states and 145 transitions. [2024-06-21 19:17:22,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 273 transitions, 3251 flow [2024-06-21 19:17:23,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 273 transitions, 3143 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-21 19:17:23,146 INFO L231 Difference]: Finished difference. Result has 335 places, 260 transitions, 2451 flow [2024-06-21 19:17:23,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2334, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2451, PETRI_PLACES=335, PETRI_TRANSITIONS=260} [2024-06-21 19:17:23,147 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 304 predicate places. [2024-06-21 19:17:23,147 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 260 transitions, 2451 flow [2024-06-21 19:17:23,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:23,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:23,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:23,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-21 19:17:23,147 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:23,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:23,148 INFO L85 PathProgramCache]: Analyzing trace with hash -2026921373, now seen corresponding path program 25 times [2024-06-21 19:17:23,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:23,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762762382] [2024-06-21 19:17:23,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:23,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:25,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:25,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:25,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762762382] [2024-06-21 19:17:25,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762762382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:25,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:25,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:25,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424997247] [2024-06-21 19:17:25,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:25,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:25,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:25,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:25,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:25,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:17:25,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 260 transitions, 2451 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:25,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:25,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:17:25,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:25,647 INFO L124 PetriNetUnfolderBase]: 574/1132 cut-off events. [2024-06-21 19:17:25,647 INFO L125 PetriNetUnfolderBase]: For 77966/77966 co-relation queries the response was YES. [2024-06-21 19:17:25,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6218 conditions, 1132 events. 574/1132 cut-off events. For 77966/77966 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6795 event pairs, 93 based on Foata normal form. 2/1129 useless extension candidates. Maximal degree in co-relation 6078. Up to 992 conditions per place. [2024-06-21 19:17:25,658 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 228 selfloop transitions, 39 changer transitions 0/271 dead transitions. [2024-06-21 19:17:25,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 271 transitions, 3011 flow [2024-06-21 19:17:25,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:25,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:25,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 19:17:25,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-21 19:17:25,659 INFO L175 Difference]: Start difference. First operand has 335 places, 260 transitions, 2451 flow. Second operand 11 states and 142 transitions. [2024-06-21 19:17:25,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 271 transitions, 3011 flow [2024-06-21 19:17:25,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 271 transitions, 2842 flow, removed 39 selfloop flow, removed 11 redundant places. [2024-06-21 19:17:25,990 INFO L231 Difference]: Finished difference. Result has 335 places, 260 transitions, 2364 flow [2024-06-21 19:17:25,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2282, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2364, PETRI_PLACES=335, PETRI_TRANSITIONS=260} [2024-06-21 19:17:25,991 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 304 predicate places. [2024-06-21 19:17:25,991 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 260 transitions, 2364 flow [2024-06-21 19:17:25,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:25,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:25,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:25,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-21 19:17:25,991 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:25,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:25,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1441630157, now seen corresponding path program 26 times [2024-06-21 19:17:25,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:25,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190282350] [2024-06-21 19:17:25,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:25,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:27,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:27,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:27,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190282350] [2024-06-21 19:17:27,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190282350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:27,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:27,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:27,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084463950] [2024-06-21 19:17:27,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:27,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:27,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:27,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:27,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:27,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:17:27,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 260 transitions, 2364 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:27,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:27,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:17:27,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:28,305 INFO L124 PetriNetUnfolderBase]: 578/1138 cut-off events. [2024-06-21 19:17:28,305 INFO L125 PetriNetUnfolderBase]: For 78776/78776 co-relation queries the response was YES. [2024-06-21 19:17:28,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6124 conditions, 1138 events. 578/1138 cut-off events. For 78776/78776 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6838 event pairs, 97 based on Foata normal form. 2/1134 useless extension candidates. Maximal degree in co-relation 5986. Up to 898 conditions per place. [2024-06-21 19:17:28,316 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 190 selfloop transitions, 77 changer transitions 0/271 dead transitions. [2024-06-21 19:17:28,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 271 transitions, 2964 flow [2024-06-21 19:17:28,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:28,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:28,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 19:17:28,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-21 19:17:28,317 INFO L175 Difference]: Start difference. First operand has 335 places, 260 transitions, 2364 flow. Second operand 11 states and 146 transitions. [2024-06-21 19:17:28,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 271 transitions, 2964 flow [2024-06-21 19:17:28,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 271 transitions, 2886 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-21 19:17:28,686 INFO L231 Difference]: Finished difference. Result has 337 places, 261 transitions, 2490 flow [2024-06-21 19:17:28,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2286, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2490, PETRI_PLACES=337, PETRI_TRANSITIONS=261} [2024-06-21 19:17:28,686 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 306 predicate places. [2024-06-21 19:17:28,686 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 261 transitions, 2490 flow [2024-06-21 19:17:28,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:28,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:28,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:28,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-21 19:17:28,687 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:28,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:28,687 INFO L85 PathProgramCache]: Analyzing trace with hash -966035547, now seen corresponding path program 27 times [2024-06-21 19:17:28,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:28,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766434762] [2024-06-21 19:17:28,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:28,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:30,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:30,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:30,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766434762] [2024-06-21 19:17:30,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766434762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:30,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:30,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:30,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618356924] [2024-06-21 19:17:30,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:30,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:30,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:30,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:30,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:30,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:17:30,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 261 transitions, 2490 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:30,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:30,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:17:30,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:31,262 INFO L124 PetriNetUnfolderBase]: 582/1148 cut-off events. [2024-06-21 19:17:31,263 INFO L125 PetriNetUnfolderBase]: For 81515/81515 co-relation queries the response was YES. [2024-06-21 19:17:31,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6327 conditions, 1148 events. 582/1148 cut-off events. For 81515/81515 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6925 event pairs, 99 based on Foata normal form. 2/1144 useless extension candidates. Maximal degree in co-relation 6188. Up to 906 conditions per place. [2024-06-21 19:17:31,273 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 192 selfloop transitions, 76 changer transitions 0/272 dead transitions. [2024-06-21 19:17:31,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 272 transitions, 3094 flow [2024-06-21 19:17:31,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:31,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:31,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 19:17:31,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-21 19:17:31,274 INFO L175 Difference]: Start difference. First operand has 337 places, 261 transitions, 2490 flow. Second operand 11 states and 147 transitions. [2024-06-21 19:17:31,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 272 transitions, 3094 flow [2024-06-21 19:17:31,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 272 transitions, 2900 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-21 19:17:31,574 INFO L231 Difference]: Finished difference. Result has 339 places, 262 transitions, 2500 flow [2024-06-21 19:17:31,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2296, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2500, PETRI_PLACES=339, PETRI_TRANSITIONS=262} [2024-06-21 19:17:31,574 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 308 predicate places. [2024-06-21 19:17:31,575 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 262 transitions, 2500 flow [2024-06-21 19:17:31,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:31,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:31,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:31,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-21 19:17:31,575 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:31,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:31,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1669708937, now seen corresponding path program 28 times [2024-06-21 19:17:31,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:31,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101791159] [2024-06-21 19:17:31,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:31,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:33,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:33,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:33,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101791159] [2024-06-21 19:17:33,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101791159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:33,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:33,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:33,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932097048] [2024-06-21 19:17:33,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:33,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:33,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:33,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:33,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:33,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:17:33,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 262 transitions, 2500 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:33,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:33,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:17:33,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:33,899 INFO L124 PetriNetUnfolderBase]: 590/1162 cut-off events. [2024-06-21 19:17:33,899 INFO L125 PetriNetUnfolderBase]: For 83263/83263 co-relation queries the response was YES. [2024-06-21 19:17:33,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6393 conditions, 1162 events. 590/1162 cut-off events. For 83263/83263 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7009 event pairs, 97 based on Foata normal form. 2/1158 useless extension candidates. Maximal degree in co-relation 6253. Up to 902 conditions per place. [2024-06-21 19:17:33,909 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 193 selfloop transitions, 78 changer transitions 0/275 dead transitions. [2024-06-21 19:17:33,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 275 transitions, 3118 flow [2024-06-21 19:17:33,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:33,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:33,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-21 19:17:33,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-21 19:17:33,910 INFO L175 Difference]: Start difference. First operand has 339 places, 262 transitions, 2500 flow. Second operand 11 states and 148 transitions. [2024-06-21 19:17:33,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 275 transitions, 3118 flow [2024-06-21 19:17:34,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 275 transitions, 2924 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-21 19:17:34,242 INFO L231 Difference]: Finished difference. Result has 342 places, 264 transitions, 2528 flow [2024-06-21 19:17:34,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2306, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2528, PETRI_PLACES=342, PETRI_TRANSITIONS=264} [2024-06-21 19:17:34,243 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-21 19:17:34,243 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 264 transitions, 2528 flow [2024-06-21 19:17:34,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:34,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:34,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:34,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-21 19:17:34,243 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:34,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:34,244 INFO L85 PathProgramCache]: Analyzing trace with hash 742047795, now seen corresponding path program 29 times [2024-06-21 19:17:34,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:34,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851781298] [2024-06-21 19:17:34,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:34,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:36,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:36,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:36,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851781298] [2024-06-21 19:17:36,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851781298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:36,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:36,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:36,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921265682] [2024-06-21 19:17:36,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:36,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:36,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:36,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:36,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:36,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:17:36,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 264 transitions, 2528 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:36,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:36,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:17:36,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:36,801 INFO L124 PetriNetUnfolderBase]: 594/1172 cut-off events. [2024-06-21 19:17:36,801 INFO L125 PetriNetUnfolderBase]: For 85076/85076 co-relation queries the response was YES. [2024-06-21 19:17:36,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6472 conditions, 1172 events. 594/1172 cut-off events. For 85076/85076 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7080 event pairs, 101 based on Foata normal form. 2/1168 useless extension candidates. Maximal degree in co-relation 6330. Up to 930 conditions per place. [2024-06-21 19:17:36,850 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 192 selfloop transitions, 79 changer transitions 0/275 dead transitions. [2024-06-21 19:17:36,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 275 transitions, 3142 flow [2024-06-21 19:17:36,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:17:36,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:17:36,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-21 19:17:36,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-21 19:17:36,851 INFO L175 Difference]: Start difference. First operand has 342 places, 264 transitions, 2528 flow. Second operand 10 states and 137 transitions. [2024-06-21 19:17:36,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 275 transitions, 3142 flow [2024-06-21 19:17:37,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 275 transitions, 2948 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-21 19:17:37,199 INFO L231 Difference]: Finished difference. Result has 344 places, 265 transitions, 2548 flow [2024-06-21 19:17:37,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2334, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2548, PETRI_PLACES=344, PETRI_TRANSITIONS=265} [2024-06-21 19:17:37,199 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-21 19:17:37,199 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 265 transitions, 2548 flow [2024-06-21 19:17:37,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:37,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:37,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:37,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-21 19:17:37,200 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:37,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:37,201 INFO L85 PathProgramCache]: Analyzing trace with hash 737401515, now seen corresponding path program 30 times [2024-06-21 19:17:37,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:37,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696817686] [2024-06-21 19:17:37,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:37,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:38,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:38,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:38,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696817686] [2024-06-21 19:17:38,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696817686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:38,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:38,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:38,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275000060] [2024-06-21 19:17:38,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:38,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:38,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:38,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:38,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:39,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:17:39,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 265 transitions, 2548 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:39,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:39,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:17:39,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:39,723 INFO L124 PetriNetUnfolderBase]: 602/1186 cut-off events. [2024-06-21 19:17:39,723 INFO L125 PetriNetUnfolderBase]: For 86940/86940 co-relation queries the response was YES. [2024-06-21 19:17:39,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6548 conditions, 1186 events. 602/1186 cut-off events. For 86940/86940 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7205 event pairs, 101 based on Foata normal form. 2/1182 useless extension candidates. Maximal degree in co-relation 6405. Up to 932 conditions per place. [2024-06-21 19:17:39,736 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 194 selfloop transitions, 80 changer transitions 0/278 dead transitions. [2024-06-21 19:17:39,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 278 transitions, 3178 flow [2024-06-21 19:17:39,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:39,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:39,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 19:17:39,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-21 19:17:39,737 INFO L175 Difference]: Start difference. First operand has 344 places, 265 transitions, 2548 flow. Second operand 11 states and 147 transitions. [2024-06-21 19:17:39,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 278 transitions, 3178 flow [2024-06-21 19:17:40,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 278 transitions, 2974 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-21 19:17:40,138 INFO L231 Difference]: Finished difference. Result has 348 places, 267 transitions, 2574 flow [2024-06-21 19:17:40,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2344, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2574, PETRI_PLACES=348, PETRI_TRANSITIONS=267} [2024-06-21 19:17:40,138 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-21 19:17:40,138 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 267 transitions, 2574 flow [2024-06-21 19:17:40,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:40,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:40,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:40,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-21 19:17:40,139 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:40,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:40,139 INFO L85 PathProgramCache]: Analyzing trace with hash -128098671, now seen corresponding path program 31 times [2024-06-21 19:17:40,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:40,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102226825] [2024-06-21 19:17:40,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:40,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:42,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:42,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:42,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102226825] [2024-06-21 19:17:42,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102226825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:42,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:42,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:42,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557473557] [2024-06-21 19:17:42,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:42,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:42,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:42,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:42,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:42,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:17:42,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 267 transitions, 2574 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:42,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:42,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:17:42,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:42,829 INFO L124 PetriNetUnfolderBase]: 610/1202 cut-off events. [2024-06-21 19:17:42,830 INFO L125 PetriNetUnfolderBase]: For 88807/88807 co-relation queries the response was YES. [2024-06-21 19:17:42,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6645 conditions, 1202 events. 610/1202 cut-off events. For 88807/88807 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7331 event pairs, 101 based on Foata normal form. 2/1198 useless extension candidates. Maximal degree in co-relation 6500. Up to 877 conditions per place. [2024-06-21 19:17:42,841 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 193 selfloop transitions, 85 changer transitions 0/282 dead transitions. [2024-06-21 19:17:42,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 282 transitions, 3432 flow [2024-06-21 19:17:42,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:42,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:42,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-21 19:17:42,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-21 19:17:42,842 INFO L175 Difference]: Start difference. First operand has 348 places, 267 transitions, 2574 flow. Second operand 11 states and 148 transitions. [2024-06-21 19:17:42,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 282 transitions, 3432 flow [2024-06-21 19:17:43,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 282 transitions, 3226 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-21 19:17:43,237 INFO L231 Difference]: Finished difference. Result has 352 places, 269 transitions, 2608 flow [2024-06-21 19:17:43,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2368, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2608, PETRI_PLACES=352, PETRI_TRANSITIONS=269} [2024-06-21 19:17:43,238 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 321 predicate places. [2024-06-21 19:17:43,238 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 269 transitions, 2608 flow [2024-06-21 19:17:43,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:43,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:43,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:43,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-21 19:17:43,239 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:43,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:43,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1587706499, now seen corresponding path program 32 times [2024-06-21 19:17:43,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:43,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806807920] [2024-06-21 19:17:43,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:43,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:45,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:45,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:45,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806807920] [2024-06-21 19:17:45,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806807920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:45,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:45,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:17:45,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347981503] [2024-06-21 19:17:45,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:45,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:17:45,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:45,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:17:45,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:17:45,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:17:45,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 269 transitions, 2608 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:45,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:45,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:17:45,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:45,682 INFO L124 PetriNetUnfolderBase]: 614/1212 cut-off events. [2024-06-21 19:17:45,682 INFO L125 PetriNetUnfolderBase]: For 90890/90890 co-relation queries the response was YES. [2024-06-21 19:17:45,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6726 conditions, 1212 events. 614/1212 cut-off events. For 90890/90890 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7424 event pairs, 105 based on Foata normal form. 2/1208 useless extension candidates. Maximal degree in co-relation 6579. Up to 1033 conditions per place. [2024-06-21 19:17:45,693 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 218 selfloop transitions, 58 changer transitions 0/280 dead transitions. [2024-06-21 19:17:45,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 280 transitions, 3238 flow [2024-06-21 19:17:45,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:45,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:45,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 19:17:45,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 19:17:45,694 INFO L175 Difference]: Start difference. First operand has 352 places, 269 transitions, 2608 flow. Second operand 11 states and 143 transitions. [2024-06-21 19:17:45,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 280 transitions, 3238 flow [2024-06-21 19:17:46,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 280 transitions, 2902 flow, removed 46 selfloop flow, removed 17 redundant places. [2024-06-21 19:17:46,109 INFO L231 Difference]: Finished difference. Result has 346 places, 270 transitions, 2450 flow [2024-06-21 19:17:46,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2281, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2450, PETRI_PLACES=346, PETRI_TRANSITIONS=270} [2024-06-21 19:17:46,109 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-21 19:17:46,110 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 270 transitions, 2450 flow [2024-06-21 19:17:46,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:46,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:46,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:46,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-21 19:17:46,110 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:46,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:46,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1678688205, now seen corresponding path program 33 times [2024-06-21 19:17:46,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:46,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014540292] [2024-06-21 19:17:46,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:46,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:47,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:47,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:47,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014540292] [2024-06-21 19:17:47,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014540292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:47,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:47,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:47,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384749945] [2024-06-21 19:17:47,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:47,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:47,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:47,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:47,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:48,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:17:48,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 270 transitions, 2450 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:48,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:48,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:17:48,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:48,524 INFO L124 PetriNetUnfolderBase]: 618/1218 cut-off events. [2024-06-21 19:17:48,524 INFO L125 PetriNetUnfolderBase]: For 90922/90922 co-relation queries the response was YES. [2024-06-21 19:17:48,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6406 conditions, 1218 events. 618/1218 cut-off events. For 90922/90922 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7458 event pairs, 105 based on Foata normal form. 2/1214 useless extension candidates. Maximal degree in co-relation 6268. Up to 978 conditions per place. [2024-06-21 19:17:48,536 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 182 selfloop transitions, 95 changer transitions 0/281 dead transitions. [2024-06-21 19:17:48,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 281 transitions, 3075 flow [2024-06-21 19:17:48,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:48,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:48,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 19:17:48,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 19:17:48,537 INFO L175 Difference]: Start difference. First operand has 346 places, 270 transitions, 2450 flow. Second operand 11 states and 143 transitions. [2024-06-21 19:17:48,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 281 transitions, 3075 flow [2024-06-21 19:17:48,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 281 transitions, 2917 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-21 19:17:48,840 INFO L231 Difference]: Finished difference. Result has 348 places, 271 transitions, 2537 flow [2024-06-21 19:17:48,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2292, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2537, PETRI_PLACES=348, PETRI_TRANSITIONS=271} [2024-06-21 19:17:48,841 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-21 19:17:48,841 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 271 transitions, 2537 flow [2024-06-21 19:17:48,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:48,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:48,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:48,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-21 19:17:48,842 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:48,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:48,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1009830461, now seen corresponding path program 34 times [2024-06-21 19:17:48,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:48,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975799169] [2024-06-21 19:17:48,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:48,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:50,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:50,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:50,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975799169] [2024-06-21 19:17:50,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975799169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:50,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:50,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:50,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365053849] [2024-06-21 19:17:50,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:50,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:50,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:50,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:50,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:50,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:17:50,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 271 transitions, 2537 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:50,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:50,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:17:50,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:51,202 INFO L124 PetriNetUnfolderBase]: 622/1226 cut-off events. [2024-06-21 19:17:51,202 INFO L125 PetriNetUnfolderBase]: For 92826/92826 co-relation queries the response was YES. [2024-06-21 19:17:51,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6530 conditions, 1226 events. 622/1226 cut-off events. For 92826/92826 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7507 event pairs, 107 based on Foata normal form. 2/1222 useless extension candidates. Maximal degree in co-relation 6391. Up to 986 conditions per place. [2024-06-21 19:17:51,214 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 194 selfloop transitions, 84 changer transitions 0/282 dead transitions. [2024-06-21 19:17:51,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 282 transitions, 3166 flow [2024-06-21 19:17:51,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:51,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:51,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 19:17:51,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 19:17:51,216 INFO L175 Difference]: Start difference. First operand has 348 places, 271 transitions, 2537 flow. Second operand 11 states and 144 transitions. [2024-06-21 19:17:51,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 282 transitions, 3166 flow [2024-06-21 19:17:51,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 282 transitions, 2932 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-21 19:17:51,535 INFO L231 Difference]: Finished difference. Result has 350 places, 272 transitions, 2528 flow [2024-06-21 19:17:51,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2303, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2528, PETRI_PLACES=350, PETRI_TRANSITIONS=272} [2024-06-21 19:17:51,536 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 319 predicate places. [2024-06-21 19:17:51,536 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 272 transitions, 2528 flow [2024-06-21 19:17:51,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:51,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:51,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:51,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-21 19:17:51,536 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:51,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:51,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1009835111, now seen corresponding path program 35 times [2024-06-21 19:17:51,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:51,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577135438] [2024-06-21 19:17:51,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:51,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:53,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:53,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:53,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577135438] [2024-06-21 19:17:53,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577135438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:53,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:53,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:53,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110939497] [2024-06-21 19:17:53,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:53,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:53,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:53,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:53,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:53,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:17:53,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 272 transitions, 2528 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:53,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:53,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:17:53,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:53,867 INFO L124 PetriNetUnfolderBase]: 619/1223 cut-off events. [2024-06-21 19:17:53,867 INFO L125 PetriNetUnfolderBase]: For 81389/81389 co-relation queries the response was YES. [2024-06-21 19:17:53,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6164 conditions, 1223 events. 619/1223 cut-off events. For 81389/81389 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7505 event pairs, 104 based on Foata normal form. 2/1219 useless extension candidates. Maximal degree in co-relation 6024. Up to 955 conditions per place. [2024-06-21 19:17:53,879 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 192 selfloop transitions, 87 changer transitions 0/283 dead transitions. [2024-06-21 19:17:53,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 283 transitions, 3110 flow [2024-06-21 19:17:53,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:53,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:53,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-21 19:17:53,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-21 19:17:53,880 INFO L175 Difference]: Start difference. First operand has 350 places, 272 transitions, 2528 flow. Second operand 11 states and 145 transitions. [2024-06-21 19:17:53,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 283 transitions, 3110 flow [2024-06-21 19:17:54,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 283 transitions, 2862 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-21 19:17:54,214 INFO L231 Difference]: Finished difference. Result has 352 places, 272 transitions, 2458 flow [2024-06-21 19:17:54,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2280, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2458, PETRI_PLACES=352, PETRI_TRANSITIONS=272} [2024-06-21 19:17:54,215 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 321 predicate places. [2024-06-21 19:17:54,215 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 272 transitions, 2458 flow [2024-06-21 19:17:54,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:54,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:54,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:54,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-21 19:17:54,215 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:54,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:54,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1670110381, now seen corresponding path program 7 times [2024-06-21 19:17:54,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:54,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54192548] [2024-06-21 19:17:54,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:54,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:55,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:55,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:55,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54192548] [2024-06-21 19:17:55,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54192548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:55,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:55,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:55,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38047976] [2024-06-21 19:17:55,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:55,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:55,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:55,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:55,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:55,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:17:55,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 272 transitions, 2458 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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) [2024-06-21 19:17:55,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:55,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:17:55,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:56,354 INFO L124 PetriNetUnfolderBase]: 627/1238 cut-off events. [2024-06-21 19:17:56,354 INFO L125 PetriNetUnfolderBase]: For 81297/81297 co-relation queries the response was YES. [2024-06-21 19:17:56,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6321 conditions, 1238 events. 627/1238 cut-off events. For 81297/81297 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7589 event pairs, 106 based on Foata normal form. 1/1233 useless extension candidates. Maximal degree in co-relation 6180. Up to 913 conditions per place. [2024-06-21 19:17:56,366 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 170 selfloop transitions, 113 changer transitions 0/287 dead transitions. [2024-06-21 19:17:56,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 287 transitions, 3398 flow [2024-06-21 19:17:56,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:17:56,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:17:56,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-21 19:17:56,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471875 [2024-06-21 19:17:56,367 INFO L175 Difference]: Start difference. First operand has 352 places, 272 transitions, 2458 flow. Second operand 10 states and 151 transitions. [2024-06-21 19:17:56,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 287 transitions, 3398 flow [2024-06-21 19:17:56,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 287 transitions, 3109 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-21 19:17:56,773 INFO L231 Difference]: Finished difference. Result has 350 places, 276 transitions, 2532 flow [2024-06-21 19:17:56,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2169, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2532, PETRI_PLACES=350, PETRI_TRANSITIONS=276} [2024-06-21 19:17:56,773 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 319 predicate places. [2024-06-21 19:17:56,774 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 276 transitions, 2532 flow [2024-06-21 19:17:56,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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) [2024-06-21 19:17:56,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:56,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:56,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-21 19:17:56,774 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:56,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:56,774 INFO L85 PathProgramCache]: Analyzing trace with hash -193070253, now seen corresponding path program 8 times [2024-06-21 19:17:56,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:56,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698674443] [2024-06-21 19:17:56,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:56,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:58,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:58,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:58,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698674443] [2024-06-21 19:17:58,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698674443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:58,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:58,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:17:58,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571658130] [2024-06-21 19:17:58,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:58,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:17:58,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:58,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:17:58,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:17:58,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:17:58,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 276 transitions, 2532 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-21 19:17:58,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:58,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:17:58,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:59,359 INFO L124 PetriNetUnfolderBase]: 635/1256 cut-off events. [2024-06-21 19:17:59,359 INFO L125 PetriNetUnfolderBase]: For 89787/89787 co-relation queries the response was YES. [2024-06-21 19:17:59,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6538 conditions, 1256 events. 635/1256 cut-off events. For 89787/89787 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7782 event pairs, 204 based on Foata normal form. 1/1256 useless extension candidates. Maximal degree in co-relation 6400. Up to 1147 conditions per place. [2024-06-21 19:17:59,370 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 263 selfloop transitions, 25 changer transitions 0/292 dead transitions. [2024-06-21 19:17:59,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 292 transitions, 3494 flow [2024-06-21 19:17:59,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:17:59,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:17:59,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 158 transitions. [2024-06-21 19:17:59,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3798076923076923 [2024-06-21 19:17:59,371 INFO L175 Difference]: Start difference. First operand has 350 places, 276 transitions, 2532 flow. Second operand 13 states and 158 transitions. [2024-06-21 19:17:59,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 292 transitions, 3494 flow [2024-06-21 19:17:59,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 292 transitions, 3288 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-21 19:17:59,751 INFO L231 Difference]: Finished difference. Result has 357 places, 280 transitions, 2521 flow [2024-06-21 19:17:59,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2326, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2521, PETRI_PLACES=357, PETRI_TRANSITIONS=280} [2024-06-21 19:17:59,751 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 326 predicate places. [2024-06-21 19:17:59,751 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 280 transitions, 2521 flow [2024-06-21 19:17:59,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-21 19:17:59,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:59,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:59,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-21 19:17:59,752 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:59,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:59,752 INFO L85 PathProgramCache]: Analyzing trace with hash -535368843, now seen corresponding path program 9 times [2024-06-21 19:17:59,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:59,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365111866] [2024-06-21 19:17:59,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:59,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:01,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:01,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:01,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365111866] [2024-06-21 19:18:01,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365111866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:01,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:01,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:01,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513609215] [2024-06-21 19:18:01,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:01,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:01,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:01,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:01,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:01,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:18:01,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 280 transitions, 2521 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-21 19:18:01,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:01,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:18:01,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:02,276 INFO L124 PetriNetUnfolderBase]: 633/1255 cut-off events. [2024-06-21 19:18:02,276 INFO L125 PetriNetUnfolderBase]: For 84640/84640 co-relation queries the response was YES. [2024-06-21 19:18:02,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6337 conditions, 1255 events. 633/1255 cut-off events. For 84640/84640 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7780 event pairs, 202 based on Foata normal form. 1/1255 useless extension candidates. Maximal degree in co-relation 6196. Up to 1154 conditions per place. [2024-06-21 19:18:02,286 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 266 selfloop transitions, 20 changer transitions 0/290 dead transitions. [2024-06-21 19:18:02,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 290 transitions, 3115 flow [2024-06-21 19:18:02,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:18:02,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:18:02,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-21 19:18:02,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 19:18:02,287 INFO L175 Difference]: Start difference. First operand has 357 places, 280 transitions, 2521 flow. Second operand 12 states and 144 transitions. [2024-06-21 19:18:02,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 290 transitions, 3115 flow [2024-06-21 19:18:02,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 290 transitions, 2965 flow, removed 62 selfloop flow, removed 9 redundant places. [2024-06-21 19:18:02,613 INFO L231 Difference]: Finished difference. Result has 360 places, 280 transitions, 2416 flow [2024-06-21 19:18:02,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2371, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2416, PETRI_PLACES=360, PETRI_TRANSITIONS=280} [2024-06-21 19:18:02,613 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 329 predicate places. [2024-06-21 19:18:02,614 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 280 transitions, 2416 flow [2024-06-21 19:18:02,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-21 19:18:02,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:02,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:02,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-21 19:18:02,614 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:02,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:02,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1433052333, now seen corresponding path program 10 times [2024-06-21 19:18:02,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:02,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723979594] [2024-06-21 19:18:02,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:02,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:04,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:04,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:04,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723979594] [2024-06-21 19:18:04,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723979594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:04,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:04,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:18:04,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111421828] [2024-06-21 19:18:04,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:04,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:18:04,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:04,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:18:04,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:18:04,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:18:04,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 280 transitions, 2416 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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) [2024-06-21 19:18:04,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:04,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:18:04,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:04,668 INFO L124 PetriNetUnfolderBase]: 641/1265 cut-off events. [2024-06-21 19:18:04,669 INFO L125 PetriNetUnfolderBase]: For 92343/92343 co-relation queries the response was YES. [2024-06-21 19:18:04,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6561 conditions, 1265 events. 641/1265 cut-off events. For 92343/92343 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7813 event pairs, 104 based on Foata normal form. 1/1260 useless extension candidates. Maximal degree in co-relation 6418. Up to 932 conditions per place. [2024-06-21 19:18:04,682 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 194 selfloop transitions, 97 changer transitions 0/295 dead transitions. [2024-06-21 19:18:04,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 295 transitions, 3394 flow [2024-06-21 19:18:04,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:18:04,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:18:04,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-21 19:18:04,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478125 [2024-06-21 19:18:04,689 INFO L175 Difference]: Start difference. First operand has 360 places, 280 transitions, 2416 flow. Second operand 10 states and 153 transitions. [2024-06-21 19:18:04,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 295 transitions, 3394 flow [2024-06-21 19:18:05,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 295 transitions, 3346 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 19:18:05,093 INFO L231 Difference]: Finished difference. Result has 359 places, 284 transitions, 2715 flow [2024-06-21 19:18:05,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2368, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2715, PETRI_PLACES=359, PETRI_TRANSITIONS=284} [2024-06-21 19:18:05,093 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-21 19:18:05,093 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 284 transitions, 2715 flow [2024-06-21 19:18:05,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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) [2024-06-21 19:18:05,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:05,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:05,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-21 19:18:05,094 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:05,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:05,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1638860043, now seen corresponding path program 11 times [2024-06-21 19:18:05,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:05,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998713113] [2024-06-21 19:18:05,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:05,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:06,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:06,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:06,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998713113] [2024-06-21 19:18:06,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998713113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:06,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:06,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:18:06,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324066263] [2024-06-21 19:18:06,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:06,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:18:06,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:06,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:18:06,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:18:06,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:18:06,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 284 transitions, 2715 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:06,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:06,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:18:06,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:07,394 INFO L124 PetriNetUnfolderBase]: 644/1270 cut-off events. [2024-06-21 19:18:07,395 INFO L125 PetriNetUnfolderBase]: For 95164/95164 co-relation queries the response was YES. [2024-06-21 19:18:07,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6833 conditions, 1270 events. 644/1270 cut-off events. For 95164/95164 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 7904 event pairs, 100 based on Foata normal form. 1/1265 useless extension candidates. Maximal degree in co-relation 6690. Up to 950 conditions per place. [2024-06-21 19:18:07,408 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 192 selfloop transitions, 100 changer transitions 0/296 dead transitions. [2024-06-21 19:18:07,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 296 transitions, 3397 flow [2024-06-21 19:18:07,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:07,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:07,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2024-06-21 19:18:07,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45170454545454547 [2024-06-21 19:18:07,409 INFO L175 Difference]: Start difference. First operand has 359 places, 284 transitions, 2715 flow. Second operand 11 states and 159 transitions. [2024-06-21 19:18:07,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 296 transitions, 3397 flow [2024-06-21 19:18:07,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 296 transitions, 3207 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-21 19:18:07,831 INFO L231 Difference]: Finished difference. Result has 364 places, 286 transitions, 2810 flow [2024-06-21 19:18:07,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2525, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2810, PETRI_PLACES=364, PETRI_TRANSITIONS=286} [2024-06-21 19:18:07,832 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-21 19:18:07,832 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 286 transitions, 2810 flow [2024-06-21 19:18:07,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:07,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:07,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:07,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-21 19:18:07,833 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:07,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:07,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1670407051, now seen corresponding path program 12 times [2024-06-21 19:18:07,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:07,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962220161] [2024-06-21 19:18:07,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:07,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:09,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:09,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:09,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962220161] [2024-06-21 19:18:09,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962220161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:09,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:09,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:18:09,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353751531] [2024-06-21 19:18:09,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:09,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:18:09,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:09,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:18:09,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:18:09,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:18:09,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 286 transitions, 2810 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:09,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:09,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:18:09,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:10,150 INFO L124 PetriNetUnfolderBase]: 647/1275 cut-off events. [2024-06-21 19:18:10,150 INFO L125 PetriNetUnfolderBase]: For 96412/96412 co-relation queries the response was YES. [2024-06-21 19:18:10,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7016 conditions, 1275 events. 647/1275 cut-off events. For 96412/96412 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 7907 event pairs, 100 based on Foata normal form. 1/1270 useless extension candidates. Maximal degree in co-relation 6870. Up to 955 conditions per place. [2024-06-21 19:18:10,163 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 183 selfloop transitions, 111 changer transitions 0/298 dead transitions. [2024-06-21 19:18:10,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 298 transitions, 3484 flow [2024-06-21 19:18:10,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:10,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:10,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 158 transitions. [2024-06-21 19:18:10,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-21 19:18:10,164 INFO L175 Difference]: Start difference. First operand has 364 places, 286 transitions, 2810 flow. Second operand 11 states and 158 transitions. [2024-06-21 19:18:10,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 298 transitions, 3484 flow [2024-06-21 19:18:10,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 298 transitions, 3215 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-21 19:18:10,619 INFO L231 Difference]: Finished difference. Result has 366 places, 288 transitions, 2836 flow [2024-06-21 19:18:10,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2541, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2836, PETRI_PLACES=366, PETRI_TRANSITIONS=288} [2024-06-21 19:18:10,620 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-21 19:18:10,620 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 288 transitions, 2836 flow [2024-06-21 19:18:10,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:10,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:10,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:10,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-21 19:18:10,621 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:10,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:10,621 INFO L85 PathProgramCache]: Analyzing trace with hash -729853243, now seen corresponding path program 13 times [2024-06-21 19:18:10,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:10,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838376898] [2024-06-21 19:18:10,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:10,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:12,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:12,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:12,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838376898] [2024-06-21 19:18:12,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838376898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:12,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:12,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:18:12,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175477085] [2024-06-21 19:18:12,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:12,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:18:12,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:12,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:18:12,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:18:12,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:18:12,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 288 transitions, 2836 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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) [2024-06-21 19:18:12,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:12,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:18:12,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:12,794 INFO L124 PetriNetUnfolderBase]: 650/1280 cut-off events. [2024-06-21 19:18:12,794 INFO L125 PetriNetUnfolderBase]: For 97649/97649 co-relation queries the response was YES. [2024-06-21 19:18:12,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7062 conditions, 1280 events. 650/1280 cut-off events. For 97649/97649 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 7923 event pairs, 106 based on Foata normal form. 1/1275 useless extension candidates. Maximal degree in co-relation 6915. Up to 960 conditions per place. [2024-06-21 19:18:12,807 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 201 selfloop transitions, 95 changer transitions 0/300 dead transitions. [2024-06-21 19:18:12,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 300 transitions, 3514 flow [2024-06-21 19:18:12,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:12,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:12,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-21 19:18:12,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-21 19:18:12,808 INFO L175 Difference]: Start difference. First operand has 366 places, 288 transitions, 2836 flow. Second operand 11 states and 160 transitions. [2024-06-21 19:18:12,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 300 transitions, 3514 flow [2024-06-21 19:18:13,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 300 transitions, 3239 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-21 19:18:13,267 INFO L231 Difference]: Finished difference. Result has 368 places, 290 transitions, 2824 flow [2024-06-21 19:18:13,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2561, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2824, PETRI_PLACES=368, PETRI_TRANSITIONS=290} [2024-06-21 19:18:13,267 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 337 predicate places. [2024-06-21 19:18:13,267 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 290 transitions, 2824 flow [2024-06-21 19:18:13,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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) [2024-06-21 19:18:13,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:13,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:13,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-21 19:18:13,268 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:13,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:13,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1678681261, now seen corresponding path program 14 times [2024-06-21 19:18:13,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:13,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071802932] [2024-06-21 19:18:13,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:13,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:14,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:14,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:14,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071802932] [2024-06-21 19:18:14,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071802932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:14,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:14,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:14,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794204260] [2024-06-21 19:18:14,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:14,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:14,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:14,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:14,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:15,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:18:15,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 290 transitions, 2824 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:15,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:15,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:18:15,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:15,658 INFO L124 PetriNetUnfolderBase]: 648/1277 cut-off events. [2024-06-21 19:18:15,658 INFO L125 PetriNetUnfolderBase]: For 92037/92037 co-relation queries the response was YES. [2024-06-21 19:18:15,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6844 conditions, 1277 events. 648/1277 cut-off events. For 92037/92037 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 7929 event pairs, 106 based on Foata normal form. 1/1272 useless extension candidates. Maximal degree in co-relation 6696. Up to 957 conditions per place. [2024-06-21 19:18:15,671 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 184 selfloop transitions, 112 changer transitions 0/300 dead transitions. [2024-06-21 19:18:15,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 300 transitions, 3438 flow [2024-06-21 19:18:15,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:15,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:15,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 157 transitions. [2024-06-21 19:18:15,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460227272727273 [2024-06-21 19:18:15,672 INFO L175 Difference]: Start difference. First operand has 368 places, 290 transitions, 2824 flow. Second operand 11 states and 157 transitions. [2024-06-21 19:18:15,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 300 transitions, 3438 flow [2024-06-21 19:18:16,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 300 transitions, 3141 flow, removed 55 selfloop flow, removed 9 redundant places. [2024-06-21 19:18:16,085 INFO L231 Difference]: Finished difference. Result has 370 places, 290 transitions, 2756 flow [2024-06-21 19:18:16,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2527, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2756, PETRI_PLACES=370, PETRI_TRANSITIONS=290} [2024-06-21 19:18:16,085 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 339 predicate places. [2024-06-21 19:18:16,086 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 290 transitions, 2756 flow [2024-06-21 19:18:16,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:16,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:16,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:16,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-21 19:18:16,086 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:16,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:16,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1393350751, now seen corresponding path program 15 times [2024-06-21 19:18:16,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:16,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561094560] [2024-06-21 19:18:16,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:16,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:16,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:18,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:18,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:18,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561094560] [2024-06-21 19:18:18,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561094560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:18,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:18,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:18,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019328731] [2024-06-21 19:18:18,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:18,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:18,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:18,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:18,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:18,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:18:18,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 290 transitions, 2756 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-21 19:18:18,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:18,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:18:18,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:18,774 INFO L124 PetriNetUnfolderBase]: 651/1287 cut-off events. [2024-06-21 19:18:18,774 INFO L125 PetriNetUnfolderBase]: For 93473/93473 co-relation queries the response was YES. [2024-06-21 19:18:18,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6878 conditions, 1287 events. 651/1287 cut-off events. For 93473/93473 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8028 event pairs, 204 based on Foata normal form. 1/1287 useless extension candidates. Maximal degree in co-relation 6729. Up to 1184 conditions per place. [2024-06-21 19:18:18,788 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 278 selfloop transitions, 20 changer transitions 0/302 dead transitions. [2024-06-21 19:18:18,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 302 transitions, 3454 flow [2024-06-21 19:18:18,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:18:18,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:18:18,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-21 19:18:18,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 19:18:18,789 INFO L175 Difference]: Start difference. First operand has 370 places, 290 transitions, 2756 flow. Second operand 12 states and 144 transitions. [2024-06-21 19:18:18,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 302 transitions, 3454 flow [2024-06-21 19:18:19,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 302 transitions, 3218 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 19:18:19,207 INFO L231 Difference]: Finished difference. Result has 372 places, 292 transitions, 2649 flow [2024-06-21 19:18:19,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2520, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2649, PETRI_PLACES=372, PETRI_TRANSITIONS=292} [2024-06-21 19:18:19,207 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 341 predicate places. [2024-06-21 19:18:19,207 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 292 transitions, 2649 flow [2024-06-21 19:18:19,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-21 19:18:19,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:19,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:19,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-21 19:18:19,208 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:19,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:19,208 INFO L85 PathProgramCache]: Analyzing trace with hash -738127453, now seen corresponding path program 16 times [2024-06-21 19:18:19,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:19,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20277346] [2024-06-21 19:18:19,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:19,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:20,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:20,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:20,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20277346] [2024-06-21 19:18:20,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20277346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:20,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:20,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:20,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324257183] [2024-06-21 19:18:20,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:20,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:20,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:20,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:20,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:20,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:18:20,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 292 transitions, 2649 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:20,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:20,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:18:20,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:21,460 INFO L124 PetriNetUnfolderBase]: 654/1289 cut-off events. [2024-06-21 19:18:21,460 INFO L125 PetriNetUnfolderBase]: For 95184/95184 co-relation queries the response was YES. [2024-06-21 19:18:21,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6787 conditions, 1289 events. 654/1289 cut-off events. For 95184/95184 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8035 event pairs, 104 based on Foata normal form. 1/1284 useless extension candidates. Maximal degree in co-relation 6637. Up to 967 conditions per place. [2024-06-21 19:18:21,513 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 207 selfloop transitions, 93 changer transitions 0/304 dead transitions. [2024-06-21 19:18:21,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 304 transitions, 3339 flow [2024-06-21 19:18:21,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:21,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:21,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-21 19:18:21,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45738636363636365 [2024-06-21 19:18:21,515 INFO L175 Difference]: Start difference. First operand has 372 places, 292 transitions, 2649 flow. Second operand 11 states and 161 transitions. [2024-06-21 19:18:21,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 304 transitions, 3339 flow [2024-06-21 19:18:21,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 304 transitions, 3226 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-06-21 19:18:21,932 INFO L231 Difference]: Finished difference. Result has 373 places, 294 transitions, 2799 flow [2024-06-21 19:18:21,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2536, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2799, PETRI_PLACES=373, PETRI_TRANSITIONS=294} [2024-06-21 19:18:21,933 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-21 19:18:21,933 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 294 transitions, 2799 flow [2024-06-21 19:18:21,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:21,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:21,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:21,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-21 19:18:21,934 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:21,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:21,935 INFO L85 PathProgramCache]: Analyzing trace with hash -966028603, now seen corresponding path program 17 times [2024-06-21 19:18:21,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:21,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147188064] [2024-06-21 19:18:21,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:21,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:23,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:23,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:23,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147188064] [2024-06-21 19:18:23,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147188064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:23,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:23,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:18:23,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636685621] [2024-06-21 19:18:23,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:23,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:18:23,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:23,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:18:23,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:18:23,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:18:23,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 294 transitions, 2799 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:23,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:23,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:18:23,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:24,584 INFO L124 PetriNetUnfolderBase]: 657/1294 cut-off events. [2024-06-21 19:18:24,584 INFO L125 PetriNetUnfolderBase]: For 97116/97116 co-relation queries the response was YES. [2024-06-21 19:18:24,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6963 conditions, 1294 events. 657/1294 cut-off events. For 97116/97116 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 8051 event pairs, 104 based on Foata normal form. 1/1289 useless extension candidates. Maximal degree in co-relation 6812. Up to 972 conditions per place. [2024-06-21 19:18:24,595 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 210 selfloop transitions, 92 changer transitions 0/306 dead transitions. [2024-06-21 19:18:24,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 306 transitions, 3497 flow [2024-06-21 19:18:24,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:24,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:24,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 162 transitions. [2024-06-21 19:18:24,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-06-21 19:18:24,596 INFO L175 Difference]: Start difference. First operand has 373 places, 294 transitions, 2799 flow. Second operand 11 states and 162 transitions. [2024-06-21 19:18:24,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 306 transitions, 3497 flow [2024-06-21 19:18:25,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 306 transitions, 3254 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-21 19:18:25,048 INFO L231 Difference]: Finished difference. Result has 375 places, 296 transitions, 2821 flow [2024-06-21 19:18:25,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2556, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2821, PETRI_PLACES=375, PETRI_TRANSITIONS=296} [2024-06-21 19:18:25,049 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 344 predicate places. [2024-06-21 19:18:25,049 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 296 transitions, 2821 flow [2024-06-21 19:18:25,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:25,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:25,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:25,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-21 19:18:25,049 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:25,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:25,050 INFO L85 PathProgramCache]: Analyzing trace with hash 742054739, now seen corresponding path program 18 times [2024-06-21 19:18:25,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:25,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731387907] [2024-06-21 19:18:25,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:25,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:26,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:26,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:26,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731387907] [2024-06-21 19:18:26,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731387907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:26,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:26,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:26,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449017132] [2024-06-21 19:18:26,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:26,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:26,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:26,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:26,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:27,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:18:27,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 296 transitions, 2821 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:27,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:27,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:18:27,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:27,689 INFO L124 PetriNetUnfolderBase]: 655/1291 cut-off events. [2024-06-21 19:18:27,689 INFO L125 PetriNetUnfolderBase]: For 90892/90892 co-relation queries the response was YES. [2024-06-21 19:18:27,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6762 conditions, 1291 events. 655/1291 cut-off events. For 90892/90892 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 8045 event pairs, 104 based on Foata normal form. 1/1286 useless extension candidates. Maximal degree in co-relation 6610. Up to 969 conditions per place. [2024-06-21 19:18:27,708 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 204 selfloop transitions, 98 changer transitions 0/306 dead transitions. [2024-06-21 19:18:27,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 306 transitions, 3447 flow [2024-06-21 19:18:27,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:27,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:27,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2024-06-21 19:18:27,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45170454545454547 [2024-06-21 19:18:27,710 INFO L175 Difference]: Start difference. First operand has 375 places, 296 transitions, 2821 flow. Second operand 11 states and 159 transitions. [2024-06-21 19:18:27,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 306 transitions, 3447 flow [2024-06-21 19:18:28,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 306 transitions, 3148 flow, removed 59 selfloop flow, removed 9 redundant places. [2024-06-21 19:18:28,170 INFO L231 Difference]: Finished difference. Result has 377 places, 296 transitions, 2723 flow [2024-06-21 19:18:28,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2522, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2723, PETRI_PLACES=377, PETRI_TRANSITIONS=296} [2024-06-21 19:18:28,171 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-21 19:18:28,171 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 296 transitions, 2723 flow [2024-06-21 19:18:28,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:28,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:28,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:28,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-21 19:18:28,171 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:28,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:28,171 INFO L85 PathProgramCache]: Analyzing trace with hash -773466807, now seen corresponding path program 19 times [2024-06-21 19:18:28,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:28,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362896312] [2024-06-21 19:18:28,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:28,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:29,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:29,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:29,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362896312] [2024-06-21 19:18:29,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362896312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:29,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:29,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:18:29,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699239874] [2024-06-21 19:18:29,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:29,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:18:29,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:29,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:18:29,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:18:29,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:18:29,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 296 transitions, 2723 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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) [2024-06-21 19:18:29,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:29,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:18:29,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:30,262 INFO L124 PetriNetUnfolderBase]: 658/1296 cut-off events. [2024-06-21 19:18:30,262 INFO L125 PetriNetUnfolderBase]: For 92133/92133 co-relation queries the response was YES. [2024-06-21 19:18:30,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6764 conditions, 1296 events. 658/1296 cut-off events. For 92133/92133 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8079 event pairs, 100 based on Foata normal form. 1/1291 useless extension candidates. Maximal degree in co-relation 6611. Up to 962 conditions per place. [2024-06-21 19:18:30,275 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 203 selfloop transitions, 104 changer transitions 0/311 dead transitions. [2024-06-21 19:18:30,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 311 transitions, 3775 flow [2024-06-21 19:18:30,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:18:30,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:18:30,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-21 19:18:30,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-21 19:18:30,276 INFO L175 Difference]: Start difference. First operand has 377 places, 296 transitions, 2723 flow. Second operand 10 states and 152 transitions. [2024-06-21 19:18:30,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 311 transitions, 3775 flow [2024-06-21 19:18:30,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 311 transitions, 3553 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-21 19:18:30,784 INFO L231 Difference]: Finished difference. Result has 377 places, 300 transitions, 2886 flow [2024-06-21 19:18:30,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2501, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2886, PETRI_PLACES=377, PETRI_TRANSITIONS=300} [2024-06-21 19:18:30,784 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-21 19:18:30,784 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 300 transitions, 2886 flow [2024-06-21 19:18:30,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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) [2024-06-21 19:18:30,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:30,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:30,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-21 19:18:30,785 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:30,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:30,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1003394427, now seen corresponding path program 20 times [2024-06-21 19:18:30,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:30,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892837656] [2024-06-21 19:18:30,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:30,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:32,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:32,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:32,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892837656] [2024-06-21 19:18:32,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892837656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:32,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:32,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:32,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143515088] [2024-06-21 19:18:32,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:32,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:32,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:32,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:32,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:32,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:18:32,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 300 transitions, 2886 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:32,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:32,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:18:32,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:33,167 INFO L124 PetriNetUnfolderBase]: 661/1301 cut-off events. [2024-06-21 19:18:33,168 INFO L125 PetriNetUnfolderBase]: For 94370/94370 co-relation queries the response was YES. [2024-06-21 19:18:33,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6879 conditions, 1301 events. 661/1301 cut-off events. For 94370/94370 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8139 event pairs, 100 based on Foata normal form. 1/1296 useless extension candidates. Maximal degree in co-relation 6726. Up to 979 conditions per place. [2024-06-21 19:18:33,182 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 209 selfloop transitions, 99 changer transitions 0/312 dead transitions. [2024-06-21 19:18:33,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 312 transitions, 3612 flow [2024-06-21 19:18:33,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:33,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:33,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-21 19:18:33,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-21 19:18:33,183 INFO L175 Difference]: Start difference. First operand has 377 places, 300 transitions, 2886 flow. Second operand 11 states and 160 transitions. [2024-06-21 19:18:33,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 312 transitions, 3612 flow [2024-06-21 19:18:33,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 312 transitions, 3380 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-21 19:18:33,694 INFO L231 Difference]: Finished difference. Result has 382 places, 302 transitions, 2949 flow [2024-06-21 19:18:33,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2670, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2949, PETRI_PLACES=382, PETRI_TRANSITIONS=302} [2024-06-21 19:18:33,694 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 351 predicate places. [2024-06-21 19:18:33,695 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 302 transitions, 2949 flow [2024-06-21 19:18:33,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:33,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:33,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:33,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-21 19:18:33,695 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:33,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:33,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1009650537, now seen corresponding path program 21 times [2024-06-21 19:18:33,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:33,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45919782] [2024-06-21 19:18:33,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:33,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:35,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:35,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:35,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45919782] [2024-06-21 19:18:35,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45919782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:35,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:35,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:35,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098954752] [2024-06-21 19:18:35,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:35,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:35,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:35,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:35,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:35,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:18:35,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 302 transitions, 2949 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:35,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:35,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:18:35,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:36,216 INFO L124 PetriNetUnfolderBase]: 659/1298 cut-off events. [2024-06-21 19:18:36,216 INFO L125 PetriNetUnfolderBase]: For 87052/87052 co-relation queries the response was YES. [2024-06-21 19:18:36,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6765 conditions, 1298 events. 659/1298 cut-off events. For 87052/87052 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8107 event pairs, 100 based on Foata normal form. 1/1293 useless extension candidates. Maximal degree in co-relation 6609. Up to 976 conditions per place. [2024-06-21 19:18:36,230 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 206 selfloop transitions, 102 changer transitions 0/312 dead transitions. [2024-06-21 19:18:36,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 312 transitions, 3587 flow [2024-06-21 19:18:36,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:36,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:36,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 158 transitions. [2024-06-21 19:18:36,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-21 19:18:36,231 INFO L175 Difference]: Start difference. First operand has 382 places, 302 transitions, 2949 flow. Second operand 11 states and 158 transitions. [2024-06-21 19:18:36,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 312 transitions, 3587 flow [2024-06-21 19:18:36,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 312 transitions, 3270 flow, removed 61 selfloop flow, removed 9 redundant places. [2024-06-21 19:18:36,694 INFO L231 Difference]: Finished difference. Result has 384 places, 302 transitions, 2841 flow [2024-06-21 19:18:36,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2632, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2841, PETRI_PLACES=384, PETRI_TRANSITIONS=302} [2024-06-21 19:18:36,694 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2024-06-21 19:18:36,694 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 302 transitions, 2841 flow [2024-06-21 19:18:36,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:36,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:36,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:36,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-21 19:18:36,695 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:36,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:36,695 INFO L85 PathProgramCache]: Analyzing trace with hash 81141190, now seen corresponding path program 1 times [2024-06-21 19:18:36,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:36,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920495738] [2024-06-21 19:18:36,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:36,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:38,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:38,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:38,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920495738] [2024-06-21 19:18:38,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920495738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:38,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:38,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:38,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007123792] [2024-06-21 19:18:38,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:38,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:38,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:38,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:38,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:38,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:18:38,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 302 transitions, 2841 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-21 19:18:38,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:38,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:18:38,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:39,016 INFO L124 PetriNetUnfolderBase]: 663/1310 cut-off events. [2024-06-21 19:18:39,016 INFO L125 PetriNetUnfolderBase]: For 95017/95017 co-relation queries the response was YES. [2024-06-21 19:18:39,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6702 conditions, 1310 events. 663/1310 cut-off events. For 95017/95017 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8195 event pairs, 114 based on Foata normal form. 2/1311 useless extension candidates. Maximal degree in co-relation 6545. Up to 1160 conditions per place. [2024-06-21 19:18:39,034 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 278 selfloop transitions, 40 changer transitions 0/322 dead transitions. [2024-06-21 19:18:39,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 322 transitions, 3535 flow [2024-06-21 19:18:39,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:18:39,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:18:39,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-21 19:18:39,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39663461538461536 [2024-06-21 19:18:39,036 INFO L175 Difference]: Start difference. First operand has 384 places, 302 transitions, 2841 flow. Second operand 13 states and 165 transitions. [2024-06-21 19:18:39,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 322 transitions, 3535 flow [2024-06-21 19:18:39,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 322 transitions, 3312 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-21 19:18:39,441 INFO L231 Difference]: Finished difference. Result has 387 places, 303 transitions, 2714 flow [2024-06-21 19:18:39,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2618, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2714, PETRI_PLACES=387, PETRI_TRANSITIONS=303} [2024-06-21 19:18:39,442 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 356 predicate places. [2024-06-21 19:18:39,442 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 303 transitions, 2714 flow [2024-06-21 19:18:39,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-21 19:18:39,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:39,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:39,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-21 19:18:39,443 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:39,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:39,443 INFO L85 PathProgramCache]: Analyzing trace with hash 626962290, now seen corresponding path program 2 times [2024-06-21 19:18:39,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:39,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699534838] [2024-06-21 19:18:39,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:39,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:41,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:41,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:41,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699534838] [2024-06-21 19:18:41,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699534838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:41,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:41,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:41,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154529514] [2024-06-21 19:18:41,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:41,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:41,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:41,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:41,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:41,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:18:41,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 303 transitions, 2714 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-21 19:18:41,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:41,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:18:41,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:41,813 INFO L124 PetriNetUnfolderBase]: 674/1331 cut-off events. [2024-06-21 19:18:41,813 INFO L125 PetriNetUnfolderBase]: For 112435/112435 co-relation queries the response was YES. [2024-06-21 19:18:41,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6932 conditions, 1331 events. 674/1331 cut-off events. For 112435/112435 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8361 event pairs, 92 based on Foata normal form. 2/1332 useless extension candidates. Maximal degree in co-relation 6774. Up to 1008 conditions per place. [2024-06-21 19:18:41,830 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 282 selfloop transitions, 42 changer transitions 0/328 dead transitions. [2024-06-21 19:18:41,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 328 transitions, 3696 flow [2024-06-21 19:18:41,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:18:41,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:18:41,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 172 transitions. [2024-06-21 19:18:41,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41346153846153844 [2024-06-21 19:18:41,831 INFO L175 Difference]: Start difference. First operand has 387 places, 303 transitions, 2714 flow. Second operand 13 states and 172 transitions. [2024-06-21 19:18:41,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 328 transitions, 3696 flow [2024-06-21 19:18:42,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 328 transitions, 3610 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 19:18:42,266 INFO L231 Difference]: Finished difference. Result has 389 places, 305 transitions, 2744 flow [2024-06-21 19:18:42,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2628, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2744, PETRI_PLACES=389, PETRI_TRANSITIONS=305} [2024-06-21 19:18:42,267 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 358 predicate places. [2024-06-21 19:18:42,267 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 305 transitions, 2744 flow [2024-06-21 19:18:42,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-21 19:18:42,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:42,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:42,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-21 19:18:42,267 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:42,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:42,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1393564774, now seen corresponding path program 3 times [2024-06-21 19:18:42,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:42,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352715389] [2024-06-21 19:18:42,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:42,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:44,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:44,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:44,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352715389] [2024-06-21 19:18:44,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352715389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:44,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:44,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:44,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514027791] [2024-06-21 19:18:44,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:44,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:44,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:44,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:44,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:44,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:18:44,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 305 transitions, 2744 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-21 19:18:44,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:44,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:18:44,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:44,673 INFO L124 PetriNetUnfolderBase]: 678/1339 cut-off events. [2024-06-21 19:18:44,673 INFO L125 PetriNetUnfolderBase]: For 114322/114322 co-relation queries the response was YES. [2024-06-21 19:18:44,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7009 conditions, 1339 events. 678/1339 cut-off events. For 114322/114322 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8408 event pairs, 114 based on Foata normal form. 2/1340 useless extension candidates. Maximal degree in co-relation 6850. Up to 1155 conditions per place. [2024-06-21 19:18:44,687 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 281 selfloop transitions, 41 changer transitions 0/326 dead transitions. [2024-06-21 19:18:44,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 326 transitions, 3452 flow [2024-06-21 19:18:44,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:18:44,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:18:44,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 167 transitions. [2024-06-21 19:18:44,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014423076923077 [2024-06-21 19:18:44,688 INFO L175 Difference]: Start difference. First operand has 389 places, 305 transitions, 2744 flow. Second operand 13 states and 167 transitions. [2024-06-21 19:18:44,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 326 transitions, 3452 flow [2024-06-21 19:18:45,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 326 transitions, 3385 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-21 19:18:45,126 INFO L231 Difference]: Finished difference. Result has 393 places, 306 transitions, 2781 flow [2024-06-21 19:18:45,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2679, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2781, PETRI_PLACES=393, PETRI_TRANSITIONS=306} [2024-06-21 19:18:45,127 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-21 19:18:45,127 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 306 transitions, 2781 flow [2024-06-21 19:18:45,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-21 19:18:45,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:45,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:45,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-21 19:18:45,128 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:45,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:45,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1388058244, now seen corresponding path program 4 times [2024-06-21 19:18:45,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:45,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3530476] [2024-06-21 19:18:45,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:45,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:46,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:46,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:46,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3530476] [2024-06-21 19:18:46,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3530476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:46,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:46,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:46,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41176134] [2024-06-21 19:18:46,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:46,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:46,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:46,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:46,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:47,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:18:47,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 306 transitions, 2781 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:47,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:47,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:18:47,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:47,615 INFO L124 PetriNetUnfolderBase]: 675/1334 cut-off events. [2024-06-21 19:18:47,615 INFO L125 PetriNetUnfolderBase]: For 99744/99744 co-relation queries the response was YES. [2024-06-21 19:18:47,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6770 conditions, 1334 events. 675/1334 cut-off events. For 99744/99744 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8399 event pairs, 106 based on Foata normal form. 2/1335 useless extension candidates. Maximal degree in co-relation 6609. Up to 1092 conditions per place. [2024-06-21 19:18:47,629 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 280 selfloop transitions, 39 changer transitions 0/323 dead transitions. [2024-06-21 19:18:47,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 323 transitions, 3459 flow [2024-06-21 19:18:47,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:18:47,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:18:47,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-21 19:18:47,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.459375 [2024-06-21 19:18:47,630 INFO L175 Difference]: Start difference. First operand has 393 places, 306 transitions, 2781 flow. Second operand 10 states and 147 transitions. [2024-06-21 19:18:47,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 323 transitions, 3459 flow [2024-06-21 19:18:48,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 323 transitions, 3367 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-21 19:18:48,050 INFO L231 Difference]: Finished difference. Result has 392 places, 306 transitions, 2773 flow [2024-06-21 19:18:48,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2689, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2773, PETRI_PLACES=392, PETRI_TRANSITIONS=306} [2024-06-21 19:18:48,050 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 361 predicate places. [2024-06-21 19:18:48,051 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 306 transitions, 2773 flow [2024-06-21 19:18:48,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:48,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:48,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:48,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-21 19:18:48,051 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:48,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:48,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1173903660, now seen corresponding path program 5 times [2024-06-21 19:18:48,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:48,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166455140] [2024-06-21 19:18:48,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:48,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:49,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:49,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:49,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166455140] [2024-06-21 19:18:49,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166455140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:49,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:49,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:49,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464311379] [2024-06-21 19:18:49,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:49,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:49,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:49,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:49,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:49,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:18:49,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 306 transitions, 2773 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-21 19:18:49,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:49,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:18:49,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:50,463 INFO L124 PetriNetUnfolderBase]: 679/1342 cut-off events. [2024-06-21 19:18:50,463 INFO L125 PetriNetUnfolderBase]: For 98598/98598 co-relation queries the response was YES. [2024-06-21 19:18:50,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6816 conditions, 1342 events. 679/1342 cut-off events. For 98598/98598 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8434 event pairs, 80 based on Foata normal form. 2/1343 useless extension candidates. Maximal degree in co-relation 6655. Up to 1071 conditions per place. [2024-06-21 19:18:50,486 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 291 selfloop transitions, 35 changer transitions 0/330 dead transitions. [2024-06-21 19:18:50,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 330 transitions, 3495 flow [2024-06-21 19:18:50,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:18:50,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:18:50,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-21 19:18:50,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 19:18:50,488 INFO L175 Difference]: Start difference. First operand has 392 places, 306 transitions, 2773 flow. Second operand 12 states and 156 transitions. [2024-06-21 19:18:50,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 330 transitions, 3495 flow [2024-06-21 19:18:51,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 330 transitions, 3401 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-21 19:18:51,103 INFO L231 Difference]: Finished difference. Result has 395 places, 307 transitions, 2772 flow [2024-06-21 19:18:51,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2679, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2772, PETRI_PLACES=395, PETRI_TRANSITIONS=307} [2024-06-21 19:18:51,104 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2024-06-21 19:18:51,104 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 307 transitions, 2772 flow [2024-06-21 19:18:51,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-21 19:18:51,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:51,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:51,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-21 19:18:51,104 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:51,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:51,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1511683130, now seen corresponding path program 1 times [2024-06-21 19:18:51,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:51,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900482615] [2024-06-21 19:18:51,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:51,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:52,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:52,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:52,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900482615] [2024-06-21 19:18:52,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900482615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:52,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:52,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:18:52,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122245217] [2024-06-21 19:18:52,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:52,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:18:52,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:52,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:18:52,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:18:53,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:18:53,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 307 transitions, 2772 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:53,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:53,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:18:53,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:53,635 INFO L124 PetriNetUnfolderBase]: 691/1370 cut-off events. [2024-06-21 19:18:53,635 INFO L125 PetriNetUnfolderBase]: For 152312/152312 co-relation queries the response was YES. [2024-06-21 19:18:53,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7051 conditions, 1370 events. 691/1370 cut-off events. For 152312/152312 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8649 event pairs, 124 based on Foata normal form. 8/1377 useless extension candidates. Maximal degree in co-relation 6889. Up to 1191 conditions per place. [2024-06-21 19:18:53,650 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 277 selfloop transitions, 36 changer transitions 9/326 dead transitions. [2024-06-21 19:18:53,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 326 transitions, 3544 flow [2024-06-21 19:18:53,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:18:53,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:18:53,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 166 transitions. [2024-06-21 19:18:53,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322916666666667 [2024-06-21 19:18:53,651 INFO L175 Difference]: Start difference. First operand has 395 places, 307 transitions, 2772 flow. Second operand 12 states and 166 transitions. [2024-06-21 19:18:53,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 326 transitions, 3544 flow [2024-06-21 19:18:54,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 326 transitions, 3433 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-21 19:18:54,119 INFO L231 Difference]: Finished difference. Result has 396 places, 304 transitions, 2716 flow [2024-06-21 19:18:54,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2661, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2716, PETRI_PLACES=396, PETRI_TRANSITIONS=304} [2024-06-21 19:18:54,120 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 365 predicate places. [2024-06-21 19:18:54,120 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 304 transitions, 2716 flow [2024-06-21 19:18:54,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:54,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:54,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:54,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-21 19:18:54,120 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:54,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:54,121 INFO L85 PathProgramCache]: Analyzing trace with hash 778942706, now seen corresponding path program 6 times [2024-06-21 19:18:54,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:54,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558785521] [2024-06-21 19:18:54,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:54,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:56,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:56,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558785521] [2024-06-21 19:18:56,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558785521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:56,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:56,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:56,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121398590] [2024-06-21 19:18:56,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:56,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:56,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:56,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:56,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:56,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:18:56,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 304 transitions, 2716 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:56,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:56,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:18:56,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:57,218 INFO L124 PetriNetUnfolderBase]: 685/1355 cut-off events. [2024-06-21 19:18:57,219 INFO L125 PetriNetUnfolderBase]: For 121597/121597 co-relation queries the response was YES. [2024-06-21 19:18:57,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7075 conditions, 1355 events. 685/1355 cut-off events. For 121597/121597 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8545 event pairs, 105 based on Foata normal form. 2/1356 useless extension candidates. Maximal degree in co-relation 6915. Up to 1066 conditions per place. [2024-06-21 19:18:57,232 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 258 selfloop transitions, 60 changer transitions 0/322 dead transitions. [2024-06-21 19:18:57,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 322 transitions, 3684 flow [2024-06-21 19:18:57,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:57,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:57,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 162 transitions. [2024-06-21 19:18:57,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-06-21 19:18:57,234 INFO L175 Difference]: Start difference. First operand has 396 places, 304 transitions, 2716 flow. Second operand 11 states and 162 transitions. [2024-06-21 19:18:57,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 322 transitions, 3684 flow [2024-06-21 19:18:57,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 322 transitions, 3541 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-21 19:18:57,701 INFO L231 Difference]: Finished difference. Result has 392 places, 306 transitions, 2736 flow [2024-06-21 19:18:57,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2577, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2736, PETRI_PLACES=392, PETRI_TRANSITIONS=306} [2024-06-21 19:18:57,701 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 361 predicate places. [2024-06-21 19:18:57,701 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 306 transitions, 2736 flow [2024-06-21 19:18:57,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:57,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:57,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:57,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-21 19:18:57,702 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:57,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:57,702 INFO L85 PathProgramCache]: Analyzing trace with hash 784449236, now seen corresponding path program 7 times [2024-06-21 19:18:57,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:57,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134903752] [2024-06-21 19:18:57,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:57,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:59,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:59,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:59,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134903752] [2024-06-21 19:18:59,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134903752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:59,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:59,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:59,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975442717] [2024-06-21 19:18:59,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:59,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:59,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:59,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:59,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:59,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:18:59,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 306 transitions, 2736 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:59,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:59,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:18:59,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:00,461 INFO L124 PetriNetUnfolderBase]: 689/1363 cut-off events. [2024-06-21 19:19:00,461 INFO L125 PetriNetUnfolderBase]: For 120231/120231 co-relation queries the response was YES. [2024-06-21 19:19:00,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7046 conditions, 1363 events. 689/1363 cut-off events. For 120231/120231 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8600 event pairs, 109 based on Foata normal form. 2/1364 useless extension candidates. Maximal degree in co-relation 6888. Up to 1110 conditions per place. [2024-06-21 19:19:00,476 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 258 selfloop transitions, 60 changer transitions 0/322 dead transitions. [2024-06-21 19:19:00,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 322 transitions, 3686 flow [2024-06-21 19:19:00,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:00,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:00,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-21 19:19:00,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-21 19:19:00,477 INFO L175 Difference]: Start difference. First operand has 392 places, 306 transitions, 2736 flow. Second operand 11 states and 160 transitions. [2024-06-21 19:19:00,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 322 transitions, 3686 flow [2024-06-21 19:19:00,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 322 transitions, 3589 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-21 19:19:00,959 INFO L231 Difference]: Finished difference. Result has 396 places, 307 transitions, 2782 flow [2024-06-21 19:19:00,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2643, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2782, PETRI_PLACES=396, PETRI_TRANSITIONS=307} [2024-06-21 19:19:00,959 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 365 predicate places. [2024-06-21 19:19:00,959 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 307 transitions, 2782 flow [2024-06-21 19:19:00,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:00,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:00,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:00,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-21 19:19:00,960 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:00,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:00,960 INFO L85 PathProgramCache]: Analyzing trace with hash -302801276, now seen corresponding path program 8 times [2024-06-21 19:19:00,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:00,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203192106] [2024-06-21 19:19:00,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:00,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:03,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:03,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:03,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203192106] [2024-06-21 19:19:03,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203192106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:03,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:03,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:03,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631467080] [2024-06-21 19:19:03,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:03,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:03,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:03,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:03,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:03,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:19:03,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 307 transitions, 2782 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:03,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:03,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:19:03,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:03,713 INFO L124 PetriNetUnfolderBase]: 686/1358 cut-off events. [2024-06-21 19:19:03,713 INFO L125 PetriNetUnfolderBase]: For 104595/104595 co-relation queries the response was YES. [2024-06-21 19:19:03,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6817 conditions, 1358 events. 686/1358 cut-off events. For 104595/104595 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8603 event pairs, 110 based on Foata normal form. 2/1359 useless extension candidates. Maximal degree in co-relation 6657. Up to 1132 conditions per place. [2024-06-21 19:19:03,728 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 258 selfloop transitions, 58 changer transitions 0/320 dead transitions. [2024-06-21 19:19:03,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 320 transitions, 3444 flow [2024-06-21 19:19:03,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:03,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:03,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-21 19:19:03,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-21 19:19:03,729 INFO L175 Difference]: Start difference. First operand has 396 places, 307 transitions, 2782 flow. Second operand 10 states and 148 transitions. [2024-06-21 19:19:03,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 320 transitions, 3444 flow [2024-06-21 19:19:04,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 320 transitions, 3304 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-21 19:19:04,151 INFO L231 Difference]: Finished difference. Result has 397 places, 307 transitions, 2762 flow [2024-06-21 19:19:04,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2642, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2762, PETRI_PLACES=397, PETRI_TRANSITIONS=307} [2024-06-21 19:19:04,152 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 366 predicate places. [2024-06-21 19:19:04,152 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 307 transitions, 2762 flow [2024-06-21 19:19:04,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:04,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:04,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:04,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-21 19:19:04,152 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:04,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:04,152 INFO L85 PathProgramCache]: Analyzing trace with hash -638001994, now seen corresponding path program 9 times [2024-06-21 19:19:04,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:04,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831363986] [2024-06-21 19:19:04,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:04,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:06,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:06,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:06,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831363986] [2024-06-21 19:19:06,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831363986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:06,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:06,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:06,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954282069] [2024-06-21 19:19:06,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:06,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:06,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:06,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:06,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:06,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:19:06,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 307 transitions, 2762 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:06,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:06,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:19:06,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:07,193 INFO L124 PetriNetUnfolderBase]: 697/1379 cut-off events. [2024-06-21 19:19:07,193 INFO L125 PetriNetUnfolderBase]: For 123942/123942 co-relation queries the response was YES. [2024-06-21 19:19:07,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7175 conditions, 1379 events. 697/1379 cut-off events. For 123942/123942 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 8719 event pairs, 101 based on Foata normal form. 2/1380 useless extension candidates. Maximal degree in co-relation 7015. Up to 944 conditions per place. [2024-06-21 19:19:07,204 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 259 selfloop transitions, 63 changer transitions 0/326 dead transitions. [2024-06-21 19:19:07,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 326 transitions, 3746 flow [2024-06-21 19:19:07,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:07,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:07,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-21 19:19:07,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45738636363636365 [2024-06-21 19:19:07,205 INFO L175 Difference]: Start difference. First operand has 397 places, 307 transitions, 2762 flow. Second operand 11 states and 161 transitions. [2024-06-21 19:19:07,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 326 transitions, 3746 flow [2024-06-21 19:19:07,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 326 transitions, 3626 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 19:19:07,758 INFO L231 Difference]: Finished difference. Result has 399 places, 309 transitions, 2811 flow [2024-06-21 19:19:07,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2642, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2811, PETRI_PLACES=399, PETRI_TRANSITIONS=309} [2024-06-21 19:19:07,758 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 368 predicate places. [2024-06-21 19:19:07,758 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 309 transitions, 2811 flow [2024-06-21 19:19:07,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:07,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:07,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:07,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-21 19:19:07,759 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:07,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:07,759 INFO L85 PathProgramCache]: Analyzing trace with hash -960053314, now seen corresponding path program 10 times [2024-06-21 19:19:07,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:07,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111609369] [2024-06-21 19:19:07,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:07,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:09,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:09,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:09,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111609369] [2024-06-21 19:19:09,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111609369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:09,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:09,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:19:09,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413110182] [2024-06-21 19:19:09,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:09,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:19:09,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:09,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:19:09,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:19:09,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:19:09,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 309 transitions, 2811 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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) [2024-06-21 19:19:09,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:09,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:19:09,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:10,221 INFO L124 PetriNetUnfolderBase]: 701/1387 cut-off events. [2024-06-21 19:19:10,221 INFO L125 PetriNetUnfolderBase]: For 126013/126013 co-relation queries the response was YES. [2024-06-21 19:19:10,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7277 conditions, 1387 events. 701/1387 cut-off events. For 126013/126013 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8822 event pairs, 113 based on Foata normal form. 2/1388 useless extension candidates. Maximal degree in co-relation 7115. Up to 1161 conditions per place. [2024-06-21 19:19:10,236 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 258 selfloop transitions, 61 changer transitions 0/323 dead transitions. [2024-06-21 19:19:10,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 323 transitions, 3499 flow [2024-06-21 19:19:10,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:10,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:10,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-21 19:19:10,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.459375 [2024-06-21 19:19:10,237 INFO L175 Difference]: Start difference. First operand has 399 places, 309 transitions, 2811 flow. Second operand 10 states and 147 transitions. [2024-06-21 19:19:10,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 323 transitions, 3499 flow [2024-06-21 19:19:10,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 323 transitions, 3398 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-21 19:19:10,816 INFO L231 Difference]: Finished difference. Result has 402 places, 310 transitions, 2858 flow [2024-06-21 19:19:10,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2714, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2858, PETRI_PLACES=402, PETRI_TRANSITIONS=310} [2024-06-21 19:19:10,817 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 371 predicate places. [2024-06-21 19:19:10,817 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 310 transitions, 2858 flow [2024-06-21 19:19:10,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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) [2024-06-21 19:19:10,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:10,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:10,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-21 19:19:10,818 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:10,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:10,818 INFO L85 PathProgramCache]: Analyzing trace with hash -960058894, now seen corresponding path program 11 times [2024-06-21 19:19:10,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:10,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214466515] [2024-06-21 19:19:10,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:10,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:12,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:12,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:12,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214466515] [2024-06-21 19:19:12,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214466515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:12,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:12,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:12,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087019577] [2024-06-21 19:19:12,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:12,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:12,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:12,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:12,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:12,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:19:12,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 310 transitions, 2858 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:12,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:12,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:19:12,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:13,544 INFO L124 PetriNetUnfolderBase]: 705/1395 cut-off events. [2024-06-21 19:19:13,544 INFO L125 PetriNetUnfolderBase]: For 127583/127583 co-relation queries the response was YES. [2024-06-21 19:19:13,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7371 conditions, 1395 events. 705/1395 cut-off events. For 127583/127583 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 8889 event pairs, 113 based on Foata normal form. 2/1396 useless extension candidates. Maximal degree in co-relation 7208. Up to 1145 conditions per place. [2024-06-21 19:19:13,560 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 258 selfloop transitions, 63 changer transitions 0/325 dead transitions. [2024-06-21 19:19:13,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 325 transitions, 3550 flow [2024-06-21 19:19:13,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:13,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:13,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 158 transitions. [2024-06-21 19:19:13,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-21 19:19:13,560 INFO L175 Difference]: Start difference. First operand has 402 places, 310 transitions, 2858 flow. Second operand 11 states and 158 transitions. [2024-06-21 19:19:13,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 325 transitions, 3550 flow [2024-06-21 19:19:14,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 325 transitions, 3418 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-21 19:19:14,118 INFO L231 Difference]: Finished difference. Result has 405 places, 311 transitions, 2877 flow [2024-06-21 19:19:14,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2726, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2877, PETRI_PLACES=405, PETRI_TRANSITIONS=311} [2024-06-21 19:19:14,118 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 374 predicate places. [2024-06-21 19:19:14,119 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 311 transitions, 2877 flow [2024-06-21 19:19:14,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:14,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:14,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:14,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-21 19:19:14,119 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:14,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:14,119 INFO L85 PathProgramCache]: Analyzing trace with hash -965565424, now seen corresponding path program 12 times [2024-06-21 19:19:14,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:14,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132988945] [2024-06-21 19:19:14,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:14,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:16,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:16,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:16,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132988945] [2024-06-21 19:19:16,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132988945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:16,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:16,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:19:16,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815853250] [2024-06-21 19:19:16,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:16,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:19:16,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:16,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:19:16,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:19:16,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:19:16,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 311 transitions, 2877 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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) [2024-06-21 19:19:16,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:16,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:19:16,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:16,622 INFO L124 PetriNetUnfolderBase]: 709/1403 cut-off events. [2024-06-21 19:19:16,622 INFO L125 PetriNetUnfolderBase]: For 129709/129709 co-relation queries the response was YES. [2024-06-21 19:19:16,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7433 conditions, 1403 events. 709/1403 cut-off events. For 129709/129709 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8905 event pairs, 109 based on Foata normal form. 2/1404 useless extension candidates. Maximal degree in co-relation 7268. Up to 1082 conditions per place. [2024-06-21 19:19:16,638 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 260 selfloop transitions, 64 changer transitions 0/328 dead transitions. [2024-06-21 19:19:16,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 328 transitions, 3853 flow [2024-06-21 19:19:16,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:16,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:16,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-21 19:19:16,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-21 19:19:16,639 INFO L175 Difference]: Start difference. First operand has 405 places, 311 transitions, 2877 flow. Second operand 10 states and 150 transitions. [2024-06-21 19:19:16,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 328 transitions, 3853 flow [2024-06-21 19:19:17,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 328 transitions, 3716 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-21 19:19:17,157 INFO L231 Difference]: Finished difference. Result has 406 places, 312 transitions, 2893 flow [2024-06-21 19:19:17,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2740, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2893, PETRI_PLACES=406, PETRI_TRANSITIONS=312} [2024-06-21 19:19:17,157 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 375 predicate places. [2024-06-21 19:19:17,157 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 312 transitions, 2893 flow [2024-06-21 19:19:17,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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) [2024-06-21 19:19:17,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:17,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:17,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-21 19:19:17,158 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:17,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:17,158 INFO L85 PathProgramCache]: Analyzing trace with hash 2066617360, now seen corresponding path program 13 times [2024-06-21 19:19:17,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:17,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138472208] [2024-06-21 19:19:17,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:17,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:18,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:18,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:18,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138472208] [2024-06-21 19:19:18,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138472208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:18,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:18,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:18,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483026928] [2024-06-21 19:19:18,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:18,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:18,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:18,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:18,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:18,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:19:18,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 312 transitions, 2893 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:18,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:18,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:19:18,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:19,377 INFO L124 PetriNetUnfolderBase]: 713/1411 cut-off events. [2024-06-21 19:19:19,377 INFO L125 PetriNetUnfolderBase]: For 131833/131833 co-relation queries the response was YES. [2024-06-21 19:19:19,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7499 conditions, 1411 events. 713/1411 cut-off events. For 131833/131833 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 8975 event pairs, 115 based on Foata normal form. 2/1412 useless extension candidates. Maximal degree in co-relation 7334. Up to 1185 conditions per place. [2024-06-21 19:19:19,391 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 248 selfloop transitions, 74 changer transitions 0/326 dead transitions. [2024-06-21 19:19:19,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 326 transitions, 3589 flow [2024-06-21 19:19:19,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:19,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:19,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-21 19:19:19,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 19:19:19,392 INFO L175 Difference]: Start difference. First operand has 406 places, 312 transitions, 2893 flow. Second operand 11 states and 154 transitions. [2024-06-21 19:19:19,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 326 transitions, 3589 flow [2024-06-21 19:19:19,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 326 transitions, 3396 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-21 19:19:19,917 INFO L231 Difference]: Finished difference. Result has 408 places, 313 transitions, 2876 flow [2024-06-21 19:19:19,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2704, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2876, PETRI_PLACES=408, PETRI_TRANSITIONS=313} [2024-06-21 19:19:19,917 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 377 predicate places. [2024-06-21 19:19:19,917 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 313 transitions, 2876 flow [2024-06-21 19:19:19,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:19,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:19,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:19,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-21 19:19:19,918 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:19,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:19,918 INFO L85 PathProgramCache]: Analyzing trace with hash -765912094, now seen corresponding path program 14 times [2024-06-21 19:19:19,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:19,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180747113] [2024-06-21 19:19:19,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:19,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:21,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:21,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:21,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180747113] [2024-06-21 19:19:21,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180747113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:21,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:21,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:21,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151251869] [2024-06-21 19:19:21,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:21,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:21,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:21,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:21,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:21,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:19:21,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 313 transitions, 2876 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:21,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:21,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:19:21,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:22,490 INFO L124 PetriNetUnfolderBase]: 717/1419 cut-off events. [2024-06-21 19:19:22,491 INFO L125 PetriNetUnfolderBase]: For 133499/133499 co-relation queries the response was YES. [2024-06-21 19:19:22,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7447 conditions, 1419 events. 717/1419 cut-off events. For 133499/133499 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9056 event pairs, 117 based on Foata normal form. 2/1420 useless extension candidates. Maximal degree in co-relation 7281. Up to 1193 conditions per place. [2024-06-21 19:19:22,503 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 256 selfloop transitions, 67 changer transitions 0/327 dead transitions. [2024-06-21 19:19:22,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 327 transitions, 3572 flow [2024-06-21 19:19:22,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:22,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:22,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 155 transitions. [2024-06-21 19:19:22,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-21 19:19:22,504 INFO L175 Difference]: Start difference. First operand has 408 places, 313 transitions, 2876 flow. Second operand 11 states and 155 transitions. [2024-06-21 19:19:22,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 327 transitions, 3572 flow [2024-06-21 19:19:23,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 327 transitions, 3412 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-21 19:19:23,080 INFO L231 Difference]: Finished difference. Result has 410 places, 314 transitions, 2876 flow [2024-06-21 19:19:23,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2716, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2876, PETRI_PLACES=410, PETRI_TRANSITIONS=314} [2024-06-21 19:19:23,081 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 379 predicate places. [2024-06-21 19:19:23,081 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 314 transitions, 2876 flow [2024-06-21 19:19:23,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:23,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:23,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:23,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-21 19:19:23,081 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:23,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:23,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1809909460, now seen corresponding path program 15 times [2024-06-21 19:19:23,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:23,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087156249] [2024-06-21 19:19:23,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:23,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:24,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:24,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087156249] [2024-06-21 19:19:24,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087156249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:24,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:24,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:24,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726001183] [2024-06-21 19:19:24,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:24,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:24,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:24,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:24,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:25,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:19:25,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 314 transitions, 2876 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:25,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:25,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:19:25,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:25,628 INFO L124 PetriNetUnfolderBase]: 714/1418 cut-off events. [2024-06-21 19:19:25,628 INFO L125 PetriNetUnfolderBase]: For 115926/115926 co-relation queries the response was YES. [2024-06-21 19:19:25,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7126 conditions, 1418 events. 714/1418 cut-off events. For 115926/115926 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9024 event pairs, 116 based on Foata normal form. 2/1419 useless extension candidates. Maximal degree in co-relation 6959. Up to 1158 conditions per place. [2024-06-21 19:19:25,643 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 255 selfloop transitions, 69 changer transitions 0/328 dead transitions. [2024-06-21 19:19:25,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 328 transitions, 3556 flow [2024-06-21 19:19:25,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:25,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:25,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 156 transitions. [2024-06-21 19:19:25,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-21 19:19:25,645 INFO L175 Difference]: Start difference. First operand has 410 places, 314 transitions, 2876 flow. Second operand 11 states and 156 transitions. [2024-06-21 19:19:25,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 328 transitions, 3556 flow [2024-06-21 19:19:26,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 328 transitions, 3398 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-21 19:19:26,242 INFO L231 Difference]: Finished difference. Result has 412 places, 314 transitions, 2861 flow [2024-06-21 19:19:26,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2718, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2861, PETRI_PLACES=412, PETRI_TRANSITIONS=314} [2024-06-21 19:19:26,242 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 381 predicate places. [2024-06-21 19:19:26,242 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 314 transitions, 2861 flow [2024-06-21 19:19:26,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:26,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:26,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:26,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-21 19:19:26,243 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:26,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:26,243 INFO L85 PathProgramCache]: Analyzing trace with hash 2076148496, now seen corresponding path program 2 times [2024-06-21 19:19:26,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:26,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529761104] [2024-06-21 19:19:26,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:26,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:28,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:28,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:28,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529761104] [2024-06-21 19:19:28,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529761104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:28,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:28,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:19:28,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260849266] [2024-06-21 19:19:28,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:28,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:19:28,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:28,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:19:28,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:19:28,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:19:28,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 314 transitions, 2861 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:28,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:28,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:19:28,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:28,862 INFO L124 PetriNetUnfolderBase]: 744/1484 cut-off events. [2024-06-21 19:19:28,862 INFO L125 PetriNetUnfolderBase]: For 229583/229583 co-relation queries the response was YES. [2024-06-21 19:19:28,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8673 conditions, 1484 events. 744/1484 cut-off events. For 229583/229583 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 9489 event pairs, 128 based on Foata normal form. 6/1489 useless extension candidates. Maximal degree in co-relation 8505. Up to 1146 conditions per place. [2024-06-21 19:19:28,879 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 243 selfloop transitions, 82 changer transitions 6/335 dead transitions. [2024-06-21 19:19:28,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 335 transitions, 3969 flow [2024-06-21 19:19:28,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:19:28,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:19:28,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 172 transitions. [2024-06-21 19:19:28,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-21 19:19:28,880 INFO L175 Difference]: Start difference. First operand has 412 places, 314 transitions, 2861 flow. Second operand 12 states and 172 transitions. [2024-06-21 19:19:28,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 335 transitions, 3969 flow [2024-06-21 19:19:29,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 335 transitions, 3810 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-21 19:19:29,734 INFO L231 Difference]: Finished difference. Result has 414 places, 312 transitions, 2858 flow [2024-06-21 19:19:29,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2702, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2858, PETRI_PLACES=414, PETRI_TRANSITIONS=312} [2024-06-21 19:19:29,735 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 383 predicate places. [2024-06-21 19:19:29,735 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 312 transitions, 2858 flow [2024-06-21 19:19:29,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:29,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:29,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:29,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-21 19:19:29,735 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:29,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:29,736 INFO L85 PathProgramCache]: Analyzing trace with hash 784664562, now seen corresponding path program 3 times [2024-06-21 19:19:29,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:29,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561054932] [2024-06-21 19:19:29,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:29,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:32,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:32,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:32,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561054932] [2024-06-21 19:19:32,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561054932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:32,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:32,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:32,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243572095] [2024-06-21 19:19:32,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:32,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:32,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:32,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:32,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:32,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:19:32,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 312 transitions, 2858 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:32,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:32,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:19:32,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:32,838 INFO L124 PetriNetUnfolderBase]: 742/1478 cut-off events. [2024-06-21 19:19:32,838 INFO L125 PetriNetUnfolderBase]: For 255519/255519 co-relation queries the response was YES. [2024-06-21 19:19:32,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8738 conditions, 1478 events. 742/1478 cut-off events. For 255519/255519 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9432 event pairs, 132 based on Foata normal form. 8/1485 useless extension candidates. Maximal degree in co-relation 8569. Up to 1223 conditions per place. [2024-06-21 19:19:32,855 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 259 selfloop transitions, 57 changer transitions 9/329 dead transitions. [2024-06-21 19:19:32,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 329 transitions, 3624 flow [2024-06-21 19:19:32,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:19:32,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:19:32,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 171 transitions. [2024-06-21 19:19:32,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453125 [2024-06-21 19:19:32,856 INFO L175 Difference]: Start difference. First operand has 414 places, 312 transitions, 2858 flow. Second operand 12 states and 171 transitions. [2024-06-21 19:19:32,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 329 transitions, 3624 flow [2024-06-21 19:19:33,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 329 transitions, 3466 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 19:19:33,856 INFO L231 Difference]: Finished difference. Result has 413 places, 309 transitions, 2795 flow [2024-06-21 19:19:33,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2700, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2795, PETRI_PLACES=413, PETRI_TRANSITIONS=309} [2024-06-21 19:19:33,856 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 382 predicate places. [2024-06-21 19:19:33,856 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 309 transitions, 2795 flow [2024-06-21 19:19:33,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:33,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:33,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:33,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-21 19:19:33,857 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:33,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:33,858 INFO L85 PathProgramCache]: Analyzing trace with hash 2066625296, now seen corresponding path program 4 times [2024-06-21 19:19:33,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:33,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155186039] [2024-06-21 19:19:33,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:33,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:35,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:35,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:35,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155186039] [2024-06-21 19:19:35,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155186039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:35,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:35,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:19:35,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824235430] [2024-06-21 19:19:35,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:35,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:19:35,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:35,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:19:35,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:19:36,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:19:36,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 309 transitions, 2795 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:36,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:36,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:19:36,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:36,619 INFO L124 PetriNetUnfolderBase]: 737/1471 cut-off events. [2024-06-21 19:19:36,619 INFO L125 PetriNetUnfolderBase]: For 250849/250849 co-relation queries the response was YES. [2024-06-21 19:19:36,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8653 conditions, 1471 events. 737/1471 cut-off events. For 250849/250849 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9417 event pairs, 132 based on Foata normal form. 8/1478 useless extension candidates. Maximal degree in co-relation 8485. Up to 1216 conditions per place. [2024-06-21 19:19:36,636 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 242 selfloop transitions, 71 changer transitions 9/326 dead transitions. [2024-06-21 19:19:36,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 326 transitions, 3555 flow [2024-06-21 19:19:36,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:19:36,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:19:36,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 168 transitions. [2024-06-21 19:19:36,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 19:19:36,637 INFO L175 Difference]: Start difference. First operand has 413 places, 309 transitions, 2795 flow. Second operand 12 states and 168 transitions. [2024-06-21 19:19:36,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 326 transitions, 3555 flow [2024-06-21 19:19:37,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 326 transitions, 3429 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-21 19:19:37,533 INFO L231 Difference]: Finished difference. Result has 411 places, 306 transitions, 2796 flow [2024-06-21 19:19:37,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2673, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2796, PETRI_PLACES=411, PETRI_TRANSITIONS=306} [2024-06-21 19:19:37,533 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 380 predicate places. [2024-06-21 19:19:37,533 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 306 transitions, 2796 flow [2024-06-21 19:19:37,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:37,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:37,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:37,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-21 19:19:37,534 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:37,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:37,535 INFO L85 PathProgramCache]: Analyzing trace with hash -959843568, now seen corresponding path program 5 times [2024-06-21 19:19:37,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:37,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454814759] [2024-06-21 19:19:37,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:37,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:39,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:39,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:39,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454814759] [2024-06-21 19:19:39,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454814759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:39,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:39,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:39,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848556464] [2024-06-21 19:19:39,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:39,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:39,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:39,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:39,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:39,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:19:39,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 306 transitions, 2796 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:39,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:39,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:19:39,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:40,283 INFO L124 PetriNetUnfolderBase]: 732/1464 cut-off events. [2024-06-21 19:19:40,283 INFO L125 PetriNetUnfolderBase]: For 247061/247061 co-relation queries the response was YES. [2024-06-21 19:19:40,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8594 conditions, 1464 events. 732/1464 cut-off events. For 247061/247061 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9384 event pairs, 132 based on Foata normal form. 8/1471 useless extension candidates. Maximal degree in co-relation 8427. Up to 1209 conditions per place. [2024-06-21 19:19:40,300 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 252 selfloop transitions, 58 changer transitions 9/323 dead transitions. [2024-06-21 19:19:40,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 323 transitions, 3546 flow [2024-06-21 19:19:40,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:19:40,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:19:40,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 170 transitions. [2024-06-21 19:19:40,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4427083333333333 [2024-06-21 19:19:40,301 INFO L175 Difference]: Start difference. First operand has 411 places, 306 transitions, 2796 flow. Second operand 12 states and 170 transitions. [2024-06-21 19:19:40,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 323 transitions, 3546 flow [2024-06-21 19:19:41,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 323 transitions, 3392 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-21 19:19:41,219 INFO L231 Difference]: Finished difference. Result has 409 places, 303 transitions, 2743 flow [2024-06-21 19:19:41,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2646, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2743, PETRI_PLACES=409, PETRI_TRANSITIONS=303} [2024-06-21 19:19:41,219 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 378 predicate places. [2024-06-21 19:19:41,219 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 303 transitions, 2743 flow [2024-06-21 19:19:41,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:41,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:41,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:41,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-21 19:19:41,220 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:41,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:41,221 INFO L85 PathProgramCache]: Analyzing trace with hash 2075822066, now seen corresponding path program 6 times [2024-06-21 19:19:41,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:41,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929091229] [2024-06-21 19:19:41,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:41,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:43,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:43,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:43,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929091229] [2024-06-21 19:19:43,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929091229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:43,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:43,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:43,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500281807] [2024-06-21 19:19:43,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:43,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:43,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:43,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:43,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:43,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:19:43,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 303 transitions, 2743 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:43,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:43,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:19:43,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:43,656 INFO L124 PetriNetUnfolderBase]: 727/1457 cut-off events. [2024-06-21 19:19:43,657 INFO L125 PetriNetUnfolderBase]: For 245224/245224 co-relation queries the response was YES. [2024-06-21 19:19:43,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8481 conditions, 1457 events. 727/1457 cut-off events. For 245224/245224 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9318 event pairs, 132 based on Foata normal form. 8/1464 useless extension candidates. Maximal degree in co-relation 8315. Up to 1196 conditions per place. [2024-06-21 19:19:43,673 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 236 selfloop transitions, 70 changer transitions 10/320 dead transitions. [2024-06-21 19:19:43,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 320 transitions, 3483 flow [2024-06-21 19:19:43,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:19:43,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:19:43,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 169 transitions. [2024-06-21 19:19:43,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4401041666666667 [2024-06-21 19:19:43,674 INFO L175 Difference]: Start difference. First operand has 409 places, 303 transitions, 2743 flow. Second operand 12 states and 169 transitions. [2024-06-21 19:19:43,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 320 transitions, 3483 flow [2024-06-21 19:19:44,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 320 transitions, 3355 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-21 19:19:44,512 INFO L231 Difference]: Finished difference. Result has 407 places, 299 transitions, 2734 flow [2024-06-21 19:19:44,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2619, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2734, PETRI_PLACES=407, PETRI_TRANSITIONS=299} [2024-06-21 19:19:44,513 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 376 predicate places. [2024-06-21 19:19:44,513 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 299 transitions, 2734 flow [2024-06-21 19:19:44,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:44,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:44,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:44,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-21 19:19:44,516 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:44,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:44,516 INFO L85 PathProgramCache]: Analyzing trace with hash -765904158, now seen corresponding path program 7 times [2024-06-21 19:19:44,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:44,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969658424] [2024-06-21 19:19:44,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:44,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:44,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:46,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:46,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:46,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969658424] [2024-06-21 19:19:46,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969658424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:46,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:46,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:19:46,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967691044] [2024-06-21 19:19:46,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:46,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:19:46,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:46,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:19:46,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:19:46,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:19:46,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 299 transitions, 2734 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:46,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:46,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:19:46,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:47,418 INFO L124 PetriNetUnfolderBase]: 699/1399 cut-off events. [2024-06-21 19:19:47,418 INFO L125 PetriNetUnfolderBase]: For 168806/168806 co-relation queries the response was YES. [2024-06-21 19:19:47,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7020 conditions, 1399 events. 699/1399 cut-off events. For 168806/168806 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8894 event pairs, 120 based on Foata normal form. 8/1406 useless extension candidates. Maximal degree in co-relation 6855. Up to 1146 conditions per place. [2024-06-21 19:19:47,429 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 242 selfloop transitions, 61 changer transitions 9/316 dead transitions. [2024-06-21 19:19:47,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 316 transitions, 3462 flow [2024-06-21 19:19:47,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:19:47,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:19:47,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 167 transitions. [2024-06-21 19:19:47,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348958333333333 [2024-06-21 19:19:47,430 INFO L175 Difference]: Start difference. First operand has 407 places, 299 transitions, 2734 flow. Second operand 12 states and 167 transitions. [2024-06-21 19:19:47,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 316 transitions, 3462 flow [2024-06-21 19:19:47,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 316 transitions, 3304 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-21 19:19:47,904 INFO L231 Difference]: Finished difference. Result has 403 places, 296 transitions, 2685 flow [2024-06-21 19:19:47,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2582, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2685, PETRI_PLACES=403, PETRI_TRANSITIONS=296} [2024-06-21 19:19:47,904 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 372 predicate places. [2024-06-21 19:19:47,904 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 296 transitions, 2685 flow [2024-06-21 19:19:47,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:47,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:47,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:47,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-21 19:19:47,905 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:47,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:47,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1484153020, now seen corresponding path program 16 times [2024-06-21 19:19:47,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:47,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204737782] [2024-06-21 19:19:47,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:47,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:49,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:49,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204737782] [2024-06-21 19:19:49,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204737782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:49,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:49,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:49,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516650016] [2024-06-21 19:19:49,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:49,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:49,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:49,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:49,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:49,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:19:49,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 296 transitions, 2685 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:49,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:49,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:19:49,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:50,255 INFO L124 PetriNetUnfolderBase]: 686/1369 cut-off events. [2024-06-21 19:19:50,255 INFO L125 PetriNetUnfolderBase]: For 110088/110088 co-relation queries the response was YES. [2024-06-21 19:19:50,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6783 conditions, 1369 events. 686/1369 cut-off events. For 110088/110088 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8734 event pairs, 122 based on Foata normal form. 2/1365 useless extension candidates. Maximal degree in co-relation 6620. Up to 1046 conditions per place. [2024-06-21 19:19:50,270 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 216 selfloop transitions, 88 changer transitions 0/308 dead transitions. [2024-06-21 19:19:50,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 308 transitions, 3335 flow [2024-06-21 19:19:50,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:50,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:50,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-21 19:19:50,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-21 19:19:50,273 INFO L175 Difference]: Start difference. First operand has 403 places, 296 transitions, 2685 flow. Second operand 11 states and 160 transitions. [2024-06-21 19:19:50,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 308 transitions, 3335 flow [2024-06-21 19:19:50,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 308 transitions, 3205 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 19:19:50,790 INFO L231 Difference]: Finished difference. Result has 399 places, 297 transitions, 2755 flow [2024-06-21 19:19:50,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2555, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2755, PETRI_PLACES=399, PETRI_TRANSITIONS=297} [2024-06-21 19:19:50,790 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 368 predicate places. [2024-06-21 19:19:50,790 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 297 transitions, 2755 flow [2024-06-21 19:19:50,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:50,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:50,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:50,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-21 19:19:50,791 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:50,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:50,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1740855340, now seen corresponding path program 17 times [2024-06-21 19:19:50,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:50,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306232922] [2024-06-21 19:19:50,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:50,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:52,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:52,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:52,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306232922] [2024-06-21 19:19:52,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306232922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:52,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:52,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:52,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059255967] [2024-06-21 19:19:52,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:52,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:52,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:52,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:52,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:52,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:19:52,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 297 transitions, 2755 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:52,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:52,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:19:52,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:53,325 INFO L124 PetriNetUnfolderBase]: 690/1377 cut-off events. [2024-06-21 19:19:53,326 INFO L125 PetriNetUnfolderBase]: For 108864/108864 co-relation queries the response was YES. [2024-06-21 19:19:53,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6877 conditions, 1377 events. 690/1377 cut-off events. For 108864/108864 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8779 event pairs, 124 based on Foata normal form. 2/1373 useless extension candidates. Maximal degree in co-relation 6715. Up to 1054 conditions per place. [2024-06-21 19:19:53,342 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 219 selfloop transitions, 86 changer transitions 0/309 dead transitions. [2024-06-21 19:19:53,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 309 transitions, 3409 flow [2024-06-21 19:19:53,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:53,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:53,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-21 19:19:53,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45738636363636365 [2024-06-21 19:19:53,343 INFO L175 Difference]: Start difference. First operand has 399 places, 297 transitions, 2755 flow. Second operand 11 states and 161 transitions. [2024-06-21 19:19:53,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 309 transitions, 3409 flow [2024-06-21 19:19:53,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 309 transitions, 3219 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-21 19:19:53,836 INFO L231 Difference]: Finished difference. Result has 401 places, 298 transitions, 2763 flow [2024-06-21 19:19:53,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2565, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2763, PETRI_PLACES=401, PETRI_TRANSITIONS=298} [2024-06-21 19:19:53,836 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 370 predicate places. [2024-06-21 19:19:53,836 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 298 transitions, 2763 flow [2024-06-21 19:19:53,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:53,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:53,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:53,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-21 19:19:53,837 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:53,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:53,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1714101850, now seen corresponding path program 18 times [2024-06-21 19:19:53,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:53,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296764040] [2024-06-21 19:19:53,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:53,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:55,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:55,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:55,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296764040] [2024-06-21 19:19:55,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296764040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:55,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:55,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:55,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310856272] [2024-06-21 19:19:55,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:55,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:55,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:55,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:55,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:55,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:19:55,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 298 transitions, 2763 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:55,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:55,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:19:55,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:56,161 INFO L124 PetriNetUnfolderBase]: 694/1385 cut-off events. [2024-06-21 19:19:56,162 INFO L125 PetriNetUnfolderBase]: For 110558/110558 co-relation queries the response was YES. [2024-06-21 19:19:56,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6920 conditions, 1385 events. 694/1385 cut-off events. For 110558/110558 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8837 event pairs, 122 based on Foata normal form. 2/1381 useless extension candidates. Maximal degree in co-relation 6757. Up to 1042 conditions per place. [2024-06-21 19:19:56,177 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 219 selfloop transitions, 88 changer transitions 0/311 dead transitions. [2024-06-21 19:19:56,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 311 transitions, 3425 flow [2024-06-21 19:19:56,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:56,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:56,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 162 transitions. [2024-06-21 19:19:56,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-06-21 19:19:56,178 INFO L175 Difference]: Start difference. First operand has 401 places, 298 transitions, 2763 flow. Second operand 11 states and 162 transitions. [2024-06-21 19:19:56,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 311 transitions, 3425 flow [2024-06-21 19:19:56,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 311 transitions, 3237 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-21 19:19:56,635 INFO L231 Difference]: Finished difference. Result has 403 places, 299 transitions, 2779 flow [2024-06-21 19:19:56,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2575, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2779, PETRI_PLACES=403, PETRI_TRANSITIONS=299} [2024-06-21 19:19:56,636 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 372 predicate places. [2024-06-21 19:19:56,636 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 299 transitions, 2779 flow [2024-06-21 19:19:56,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:56,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:56,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:56,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-21 19:19:56,636 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:56,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:56,637 INFO L85 PathProgramCache]: Analyzing trace with hash 512031748, now seen corresponding path program 19 times [2024-06-21 19:19:56,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:56,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915320452] [2024-06-21 19:19:56,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:56,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:58,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:58,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:58,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915320452] [2024-06-21 19:19:58,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915320452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:58,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:58,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:58,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043165169] [2024-06-21 19:19:58,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:58,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:58,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:58,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:58,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:58,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:19:58,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 299 transitions, 2779 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:58,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:58,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:19:58,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:59,186 INFO L124 PetriNetUnfolderBase]: 698/1393 cut-off events. [2024-06-21 19:19:59,186 INFO L125 PetriNetUnfolderBase]: For 112466/112466 co-relation queries the response was YES. [2024-06-21 19:19:59,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6977 conditions, 1393 events. 698/1393 cut-off events. For 112466/112466 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8904 event pairs, 124 based on Foata normal form. 2/1389 useless extension candidates. Maximal degree in co-relation 6813. Up to 1070 conditions per place. [2024-06-21 19:19:59,201 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 214 selfloop transitions, 93 changer transitions 0/311 dead transitions. [2024-06-21 19:19:59,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 311 transitions, 3441 flow [2024-06-21 19:19:59,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:59,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:59,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2024-06-21 19:19:59,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45170454545454547 [2024-06-21 19:19:59,202 INFO L175 Difference]: Start difference. First operand has 403 places, 299 transitions, 2779 flow. Second operand 11 states and 159 transitions. [2024-06-21 19:19:59,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 311 transitions, 3441 flow [2024-06-21 19:19:59,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 311 transitions, 3247 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-21 19:19:59,716 INFO L231 Difference]: Finished difference. Result has 405 places, 300 transitions, 2801 flow [2024-06-21 19:19:59,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2585, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2801, PETRI_PLACES=405, PETRI_TRANSITIONS=300} [2024-06-21 19:19:59,716 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 374 predicate places. [2024-06-21 19:19:59,716 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 300 transitions, 2801 flow [2024-06-21 19:19:59,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:59,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:59,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:59,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-21 19:19:59,717 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:59,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:59,717 INFO L85 PathProgramCache]: Analyzing trace with hash -492368586, now seen corresponding path program 20 times [2024-06-21 19:19:59,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:59,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84052978] [2024-06-21 19:19:59,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:59,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:01,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:01,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:01,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84052978] [2024-06-21 19:20:01,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84052978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:01,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:01,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:20:01,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485652772] [2024-06-21 19:20:01,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:01,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:20:01,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:01,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:20:01,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:20:01,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:20:01,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 300 transitions, 2801 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:01,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:01,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:20:01,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:02,203 INFO L124 PetriNetUnfolderBase]: 702/1401 cut-off events. [2024-06-21 19:20:02,203 INFO L125 PetriNetUnfolderBase]: For 114211/114211 co-relation queries the response was YES. [2024-06-21 19:20:02,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7030 conditions, 1401 events. 702/1401 cut-off events. For 114211/114211 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8942 event pairs, 124 based on Foata normal form. 2/1397 useless extension candidates. Maximal degree in co-relation 6865. Up to 1078 conditions per place. [2024-06-21 19:20:02,218 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 204 selfloop transitions, 104 changer transitions 0/312 dead transitions. [2024-06-21 19:20:02,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 312 transitions, 3467 flow [2024-06-21 19:20:02,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:02,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:02,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 158 transitions. [2024-06-21 19:20:02,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-21 19:20:02,219 INFO L175 Difference]: Start difference. First operand has 405 places, 300 transitions, 2801 flow. Second operand 11 states and 158 transitions. [2024-06-21 19:20:02,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 312 transitions, 3467 flow [2024-06-21 19:20:02,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 312 transitions, 3261 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-21 19:20:02,669 INFO L231 Difference]: Finished difference. Result has 407 places, 301 transitions, 2835 flow [2024-06-21 19:20:02,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2595, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2835, PETRI_PLACES=407, PETRI_TRANSITIONS=301} [2024-06-21 19:20:02,670 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 376 predicate places. [2024-06-21 19:20:02,670 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 301 transitions, 2835 flow [2024-06-21 19:20:02,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:02,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:02,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:02,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-21 19:20:02,670 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:02,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:02,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1040463052, now seen corresponding path program 21 times [2024-06-21 19:20:02,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:02,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022336591] [2024-06-21 19:20:02,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:02,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:04,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:04,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:04,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022336591] [2024-06-21 19:20:04,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022336591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:04,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:04,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:04,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077253233] [2024-06-21 19:20:04,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:04,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:04,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:04,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:04,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:04,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:20:04,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 301 transitions, 2835 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:04,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:04,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:20:04,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:05,273 INFO L124 PetriNetUnfolderBase]: 706/1409 cut-off events. [2024-06-21 19:20:05,273 INFO L125 PetriNetUnfolderBase]: For 116026/116026 co-relation queries the response was YES. [2024-06-21 19:20:05,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7099 conditions, 1409 events. 706/1409 cut-off events. For 116026/116026 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9036 event pairs, 124 based on Foata normal form. 2/1405 useless extension candidates. Maximal degree in co-relation 6933. Up to 1086 conditions per place. [2024-06-21 19:20:05,288 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 217 selfloop transitions, 92 changer transitions 0/313 dead transitions. [2024-06-21 19:20:05,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 313 transitions, 3505 flow [2024-06-21 19:20:05,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:05,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:05,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-21 19:20:05,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-21 19:20:05,289 INFO L175 Difference]: Start difference. First operand has 407 places, 301 transitions, 2835 flow. Second operand 11 states and 160 transitions. [2024-06-21 19:20:05,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 313 transitions, 3505 flow [2024-06-21 19:20:05,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 313 transitions, 3275 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-21 19:20:05,811 INFO L231 Difference]: Finished difference. Result has 409 places, 302 transitions, 2823 flow [2024-06-21 19:20:05,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2605, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2823, PETRI_PLACES=409, PETRI_TRANSITIONS=302} [2024-06-21 19:20:05,812 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 378 predicate places. [2024-06-21 19:20:05,812 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 302 transitions, 2823 flow [2024-06-21 19:20:05,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:05,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:05,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:05,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-21 19:20:05,812 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:05,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:05,813 INFO L85 PathProgramCache]: Analyzing trace with hash -215654588, now seen corresponding path program 22 times [2024-06-21 19:20:05,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:05,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338547372] [2024-06-21 19:20:05,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:05,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:07,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:07,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:07,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338547372] [2024-06-21 19:20:07,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338547372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:07,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:07,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:20:07,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179466529] [2024-06-21 19:20:07,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:07,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:20:07,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:07,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:20:07,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:20:07,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:20:07,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 302 transitions, 2823 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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) [2024-06-21 19:20:07,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:07,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:20:07,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:08,128 INFO L124 PetriNetUnfolderBase]: 710/1417 cut-off events. [2024-06-21 19:20:08,128 INFO L125 PetriNetUnfolderBase]: For 117849/117849 co-relation queries the response was YES. [2024-06-21 19:20:08,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7122 conditions, 1417 events. 710/1417 cut-off events. For 117849/117849 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9079 event pairs, 124 based on Foata normal form. 2/1413 useless extension candidates. Maximal degree in co-relation 6955. Up to 1094 conditions per place. [2024-06-21 19:20:08,143 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 225 selfloop transitions, 85 changer transitions 0/314 dead transitions. [2024-06-21 19:20:08,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 314 transitions, 3497 flow [2024-06-21 19:20:08,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:08,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:08,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 162 transitions. [2024-06-21 19:20:08,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-06-21 19:20:08,144 INFO L175 Difference]: Start difference. First operand has 409 places, 302 transitions, 2823 flow. Second operand 11 states and 162 transitions. [2024-06-21 19:20:08,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 314 transitions, 3497 flow [2024-06-21 19:20:08,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 314 transitions, 3289 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-21 19:20:08,657 INFO L231 Difference]: Finished difference. Result has 411 places, 303 transitions, 2821 flow [2024-06-21 19:20:08,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2615, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2821, PETRI_PLACES=411, PETRI_TRANSITIONS=303} [2024-06-21 19:20:08,658 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 380 predicate places. [2024-06-21 19:20:08,658 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 303 transitions, 2821 flow [2024-06-21 19:20:08,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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) [2024-06-21 19:20:08,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:08,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:08,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-21 19:20:08,658 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:08,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:08,658 INFO L85 PathProgramCache]: Analyzing trace with hash 643391186, now seen corresponding path program 23 times [2024-06-21 19:20:08,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:08,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024207068] [2024-06-21 19:20:08,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:08,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:08,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:10,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:10,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:10,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024207068] [2024-06-21 19:20:10,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024207068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:10,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:10,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:10,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586673819] [2024-06-21 19:20:10,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:10,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:10,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:10,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:10,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:10,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:20:10,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 303 transitions, 2821 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:10,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:10,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:20:10,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:11,216 INFO L124 PetriNetUnfolderBase]: 714/1425 cut-off events. [2024-06-21 19:20:11,216 INFO L125 PetriNetUnfolderBase]: For 119522/119522 co-relation queries the response was YES. [2024-06-21 19:20:11,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7155 conditions, 1425 events. 714/1425 cut-off events. For 119522/119522 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9145 event pairs, 126 based on Foata normal form. 2/1421 useless extension candidates. Maximal degree in co-relation 6987. Up to 1102 conditions per place. [2024-06-21 19:20:11,232 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 206 selfloop transitions, 105 changer transitions 0/315 dead transitions. [2024-06-21 19:20:11,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 315 transitions, 3499 flow [2024-06-21 19:20:11,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:11,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:11,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 157 transitions. [2024-06-21 19:20:11,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460227272727273 [2024-06-21 19:20:11,233 INFO L175 Difference]: Start difference. First operand has 411 places, 303 transitions, 2821 flow. Second operand 11 states and 157 transitions. [2024-06-21 19:20:11,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 315 transitions, 3499 flow [2024-06-21 19:20:11,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 315 transitions, 3303 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-21 19:20:11,740 INFO L231 Difference]: Finished difference. Result has 413 places, 304 transitions, 2873 flow [2024-06-21 19:20:11,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2625, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2873, PETRI_PLACES=413, PETRI_TRANSITIONS=304} [2024-06-21 19:20:11,740 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 382 predicate places. [2024-06-21 19:20:11,740 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 304 transitions, 2873 flow [2024-06-21 19:20:11,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:11,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:11,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:11,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-21 19:20:11,741 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:11,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:11,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1913403640, now seen corresponding path program 24 times [2024-06-21 19:20:11,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:11,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836277633] [2024-06-21 19:20:11,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:11,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:13,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:13,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:13,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836277633] [2024-06-21 19:20:13,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836277633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:13,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:13,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:20:13,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277717389] [2024-06-21 19:20:13,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:13,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:20:13,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:13,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:20:13,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:20:13,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:20:13,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 304 transitions, 2873 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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) [2024-06-21 19:20:13,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:13,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:20:13,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:14,574 INFO L124 PetriNetUnfolderBase]: 718/1437 cut-off events. [2024-06-21 19:20:14,574 INFO L125 PetriNetUnfolderBase]: For 121092/121092 co-relation queries the response was YES. [2024-06-21 19:20:14,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7246 conditions, 1437 events. 718/1437 cut-off events. For 121092/121092 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9203 event pairs, 128 based on Foata normal form. 2/1433 useless extension candidates. Maximal degree in co-relation 7077. Up to 1096 conditions per place. [2024-06-21 19:20:14,586 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 227 selfloop transitions, 86 changer transitions 0/317 dead transitions. [2024-06-21 19:20:14,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 317 transitions, 3559 flow [2024-06-21 19:20:14,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:14,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:14,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-06-21 19:20:14,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-06-21 19:20:14,588 INFO L175 Difference]: Start difference. First operand has 413 places, 304 transitions, 2873 flow. Second operand 11 states and 164 transitions. [2024-06-21 19:20:14,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 317 transitions, 3559 flow [2024-06-21 19:20:15,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 317 transitions, 3321 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-21 19:20:15,148 INFO L231 Difference]: Finished difference. Result has 415 places, 305 transitions, 2847 flow [2024-06-21 19:20:15,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2635, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2847, PETRI_PLACES=415, PETRI_TRANSITIONS=305} [2024-06-21 19:20:15,148 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 384 predicate places. [2024-06-21 19:20:15,149 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 305 transitions, 2847 flow [2024-06-21 19:20:15,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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) [2024-06-21 19:20:15,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:15,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:15,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-21 19:20:15,149 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:15,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:15,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1974262200, now seen corresponding path program 25 times [2024-06-21 19:20:15,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:15,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112900106] [2024-06-21 19:20:15,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:15,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:17,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:17,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:17,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112900106] [2024-06-21 19:20:17,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112900106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:17,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:17,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:17,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503754802] [2024-06-21 19:20:17,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:17,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:17,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:17,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:17,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:17,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:20:17,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 305 transitions, 2847 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:17,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:17,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:20:17,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:17,856 INFO L124 PetriNetUnfolderBase]: 722/1441 cut-off events. [2024-06-21 19:20:17,856 INFO L125 PetriNetUnfolderBase]: For 123040/123040 co-relation queries the response was YES. [2024-06-21 19:20:17,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7255 conditions, 1441 events. 722/1441 cut-off events. For 123040/123040 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9244 event pairs, 128 based on Foata normal form. 2/1437 useless extension candidates. Maximal degree in co-relation 7085. Up to 1098 conditions per place. [2024-06-21 19:20:17,872 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 220 selfloop transitions, 94 changer transitions 0/318 dead transitions. [2024-06-21 19:20:17,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 318 transitions, 3537 flow [2024-06-21 19:20:17,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:17,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:17,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-21 19:20:17,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45738636363636365 [2024-06-21 19:20:17,874 INFO L175 Difference]: Start difference. First operand has 415 places, 305 transitions, 2847 flow. Second operand 11 states and 161 transitions. [2024-06-21 19:20:17,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 318 transitions, 3537 flow [2024-06-21 19:20:18,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 318 transitions, 3335 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 19:20:18,457 INFO L231 Difference]: Finished difference. Result has 417 places, 306 transitions, 2875 flow [2024-06-21 19:20:18,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2645, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2875, PETRI_PLACES=417, PETRI_TRANSITIONS=306} [2024-06-21 19:20:18,458 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 386 predicate places. [2024-06-21 19:20:18,458 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 306 transitions, 2875 flow [2024-06-21 19:20:18,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:18,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:18,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:18,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-21 19:20:18,458 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:18,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:18,458 INFO L85 PathProgramCache]: Analyzing trace with hash -221368508, now seen corresponding path program 26 times [2024-06-21 19:20:18,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:18,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138983650] [2024-06-21 19:20:18,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:18,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:20,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:20,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:20,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138983650] [2024-06-21 19:20:20,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138983650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:20,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:20,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:20:20,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756141572] [2024-06-21 19:20:20,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:20,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:20:20,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:20,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:20:20,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:20:20,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:20:20,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 306 transitions, 2875 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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) [2024-06-21 19:20:20,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:20,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:20:20,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:20,750 INFO L124 PetriNetUnfolderBase]: 726/1449 cut-off events. [2024-06-21 19:20:20,750 INFO L125 PetriNetUnfolderBase]: For 124937/124937 co-relation queries the response was YES. [2024-06-21 19:20:20,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7322 conditions, 1449 events. 726/1449 cut-off events. For 124937/124937 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9338 event pairs, 128 based on Foata normal form. 2/1445 useless extension candidates. Maximal degree in co-relation 7151. Up to 1064 conditions per place. [2024-06-21 19:20:20,766 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 226 selfloop transitions, 90 changer transitions 0/320 dead transitions. [2024-06-21 19:20:20,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 320 transitions, 3573 flow [2024-06-21 19:20:20,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:20,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:20,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-06-21 19:20:20,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-06-21 19:20:20,767 INFO L175 Difference]: Start difference. First operand has 417 places, 306 transitions, 2875 flow. Second operand 11 states and 164 transitions. [2024-06-21 19:20:20,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 320 transitions, 3573 flow [2024-06-21 19:20:21,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 320 transitions, 3353 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-21 19:20:21,335 INFO L231 Difference]: Finished difference. Result has 419 places, 307 transitions, 2879 flow [2024-06-21 19:20:21,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2655, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2879, PETRI_PLACES=419, PETRI_TRANSITIONS=307} [2024-06-21 19:20:21,335 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 388 predicate places. [2024-06-21 19:20:21,335 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 307 transitions, 2879 flow [2024-06-21 19:20:21,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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) [2024-06-21 19:20:21,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:21,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:21,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-21 19:20:21,335 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:21,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:21,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1523139622, now seen corresponding path program 27 times [2024-06-21 19:20:21,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:21,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313524217] [2024-06-21 19:20:21,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:21,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:23,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:23,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:23,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313524217] [2024-06-21 19:20:23,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313524217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:23,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:23,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:23,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109999898] [2024-06-21 19:20:23,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:23,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:23,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:23,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:23,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:23,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:20:23,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 307 transitions, 2879 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:23,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:23,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:20:23,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:24,094 INFO L124 PetriNetUnfolderBase]: 737/1470 cut-off events. [2024-06-21 19:20:24,094 INFO L125 PetriNetUnfolderBase]: For 148344/148344 co-relation queries the response was YES. [2024-06-21 19:20:24,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7799 conditions, 1470 events. 737/1470 cut-off events. For 148344/148344 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 9473 event pairs, 131 based on Foata normal form. 2/1466 useless extension candidates. Maximal degree in co-relation 7627. Up to 1112 conditions per place. [2024-06-21 19:20:24,111 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 227 selfloop transitions, 92 changer transitions 0/323 dead transitions. [2024-06-21 19:20:24,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 323 transitions, 3915 flow [2024-06-21 19:20:24,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:24,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:24,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-06-21 19:20:24,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-06-21 19:20:24,111 INFO L175 Difference]: Start difference. First operand has 419 places, 307 transitions, 2879 flow. Second operand 11 states and 164 transitions. [2024-06-21 19:20:24,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 323 transitions, 3915 flow [2024-06-21 19:20:24,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 323 transitions, 3701 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-21 19:20:24,785 INFO L231 Difference]: Finished difference. Result has 421 places, 309 transitions, 2935 flow [2024-06-21 19:20:24,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2665, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2935, PETRI_PLACES=421, PETRI_TRANSITIONS=309} [2024-06-21 19:20:24,785 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 390 predicate places. [2024-06-21 19:20:24,785 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 309 transitions, 2935 flow [2024-06-21 19:20:24,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:24,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:24,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:24,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-21 19:20:24,786 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:24,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:24,786 INFO L85 PathProgramCache]: Analyzing trace with hash -499725816, now seen corresponding path program 28 times [2024-06-21 19:20:24,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:24,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239639623] [2024-06-21 19:20:24,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:24,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:26,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:26,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:26,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239639623] [2024-06-21 19:20:26,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239639623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:26,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:26,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:26,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376618550] [2024-06-21 19:20:26,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:26,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:26,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:26,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:26,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:26,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:20:26,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 309 transitions, 2935 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:26,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:26,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:20:26,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:27,127 INFO L124 PetriNetUnfolderBase]: 748/1491 cut-off events. [2024-06-21 19:20:27,128 INFO L125 PetriNetUnfolderBase]: For 172469/172469 co-relation queries the response was YES. [2024-06-21 19:20:27,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8284 conditions, 1491 events. 748/1491 cut-off events. For 172469/172469 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 9620 event pairs, 136 based on Foata normal form. 2/1487 useless extension candidates. Maximal degree in co-relation 8111. Up to 1139 conditions per place. [2024-06-21 19:20:27,145 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 212 selfloop transitions, 108 changer transitions 0/324 dead transitions. [2024-06-21 19:20:27,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 324 transitions, 3977 flow [2024-06-21 19:20:27,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:27,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:27,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2024-06-21 19:20:27,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45170454545454547 [2024-06-21 19:20:27,147 INFO L175 Difference]: Start difference. First operand has 421 places, 309 transitions, 2935 flow. Second operand 11 states and 159 transitions. [2024-06-21 19:20:27,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 324 transitions, 3977 flow [2024-06-21 19:20:27,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 324 transitions, 3821 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-21 19:20:27,856 INFO L231 Difference]: Finished difference. Result has 425 places, 311 transitions, 3085 flow [2024-06-21 19:20:27,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2779, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3085, PETRI_PLACES=425, PETRI_TRANSITIONS=311} [2024-06-21 19:20:27,856 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 394 predicate places. [2024-06-21 19:20:27,857 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 311 transitions, 3085 flow [2024-06-21 19:20:27,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:27,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:27,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:27,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-21 19:20:27,857 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:27,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:27,858 INFO L85 PathProgramCache]: Analyzing trace with hash 471726472, now seen corresponding path program 29 times [2024-06-21 19:20:27,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:27,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336620795] [2024-06-21 19:20:27,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:27,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:27,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:29,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:29,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:29,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336620795] [2024-06-21 19:20:29,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336620795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:29,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:29,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:29,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110654520] [2024-06-21 19:20:29,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:29,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:29,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:29,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:29,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:29,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:20:29,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 311 transitions, 3085 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:29,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:29,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:20:29,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:30,580 INFO L124 PetriNetUnfolderBase]: 752/1499 cut-off events. [2024-06-21 19:20:30,581 INFO L125 PetriNetUnfolderBase]: For 174550/174550 co-relation queries the response was YES. [2024-06-21 19:20:30,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8481 conditions, 1499 events. 752/1499 cut-off events. For 174550/174550 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9674 event pairs, 140 based on Foata normal form. 2/1495 useless extension candidates. Maximal degree in co-relation 8306. Up to 1176 conditions per place. [2024-06-21 19:20:30,598 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 228 selfloop transitions, 91 changer transitions 0/323 dead transitions. [2024-06-21 19:20:30,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 323 transitions, 3783 flow [2024-06-21 19:20:30,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:30,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:30,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2024-06-21 19:20:30,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45170454545454547 [2024-06-21 19:20:30,600 INFO L175 Difference]: Start difference. First operand has 425 places, 311 transitions, 3085 flow. Second operand 11 states and 159 transitions. [2024-06-21 19:20:30,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 323 transitions, 3783 flow [2024-06-21 19:20:31,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 323 transitions, 3595 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-21 19:20:31,337 INFO L231 Difference]: Finished difference. Result has 429 places, 312 transitions, 3121 flow [2024-06-21 19:20:31,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2897, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3121, PETRI_PLACES=429, PETRI_TRANSITIONS=312} [2024-06-21 19:20:31,337 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 398 predicate places. [2024-06-21 19:20:31,337 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 312 transitions, 3121 flow [2024-06-21 19:20:31,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:31,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:31,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:31,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-21 19:20:31,338 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:31,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:31,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1528646152, now seen corresponding path program 30 times [2024-06-21 19:20:31,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:31,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572555403] [2024-06-21 19:20:31,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:31,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:33,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:33,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:33,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572555403] [2024-06-21 19:20:33,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572555403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:33,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:33,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:33,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481532677] [2024-06-21 19:20:33,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:33,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:33,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:33,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:33,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:33,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:20:33,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 312 transitions, 3121 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:33,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:33,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:20:33,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:34,221 INFO L124 PetriNetUnfolderBase]: 749/1494 cut-off events. [2024-06-21 19:20:34,221 INFO L125 PetriNetUnfolderBase]: For 154513/154513 co-relation queries the response was YES. [2024-06-21 19:20:34,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8174 conditions, 1494 events. 749/1494 cut-off events. For 154513/154513 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9662 event pairs, 135 based on Foata normal form. 2/1490 useless extension candidates. Maximal degree in co-relation 7997. Up to 1157 conditions per place. [2024-06-21 19:20:34,239 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 229 selfloop transitions, 91 changer transitions 0/324 dead transitions. [2024-06-21 19:20:34,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 324 transitions, 3787 flow [2024-06-21 19:20:34,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:20:34,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:20:34,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-21 19:20:34,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-21 19:20:34,241 INFO L175 Difference]: Start difference. First operand has 429 places, 312 transitions, 3121 flow. Second operand 10 states and 152 transitions. [2024-06-21 19:20:34,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 324 transitions, 3787 flow [2024-06-21 19:20:34,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 324 transitions, 3543 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-21 19:20:34,882 INFO L231 Difference]: Finished difference. Result has 430 places, 312 transitions, 3063 flow [2024-06-21 19:20:34,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2877, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3063, PETRI_PLACES=430, PETRI_TRANSITIONS=312} [2024-06-21 19:20:34,883 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 399 predicate places. [2024-06-21 19:20:34,883 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 312 transitions, 3063 flow [2024-06-21 19:20:34,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:34,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:34,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:34,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-21 19:20:34,884 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:34,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:34,884 INFO L85 PathProgramCache]: Analyzing trace with hash -714864330, now seen corresponding path program 31 times [2024-06-21 19:20:34,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:34,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870996507] [2024-06-21 19:20:34,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:34,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:36,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:36,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:36,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870996507] [2024-06-21 19:20:36,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870996507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:36,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:36,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:36,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901785165] [2024-06-21 19:20:36,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:36,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:36,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:36,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:36,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:37,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:20:37,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 312 transitions, 3063 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-21 19:20:37,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:37,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:20:37,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:37,521 INFO L124 PetriNetUnfolderBase]: 746/1492 cut-off events. [2024-06-21 19:20:37,521 INFO L125 PetriNetUnfolderBase]: For 133530/133530 co-relation queries the response was YES. [2024-06-21 19:20:37,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7733 conditions, 1492 events. 746/1492 cut-off events. For 133530/133530 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9658 event pairs, 253 based on Foata normal form. 2/1493 useless extension candidates. Maximal degree in co-relation 7556. Up to 1388 conditions per place. [2024-06-21 19:20:37,538 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 300 selfloop transitions, 19 changer transitions 0/323 dead transitions. [2024-06-21 19:20:37,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 323 transitions, 3725 flow [2024-06-21 19:20:37,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:37,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:37,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 19:20:37,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-21 19:20:37,540 INFO L175 Difference]: Start difference. First operand has 430 places, 312 transitions, 3063 flow. Second operand 11 states and 136 transitions. [2024-06-21 19:20:37,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 323 transitions, 3725 flow [2024-06-21 19:20:38,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 323 transitions, 3509 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-21 19:20:38,259 INFO L231 Difference]: Finished difference. Result has 432 places, 312 transitions, 2889 flow [2024-06-21 19:20:38,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2847, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2889, PETRI_PLACES=432, PETRI_TRANSITIONS=312} [2024-06-21 19:20:38,259 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 401 predicate places. [2024-06-21 19:20:38,260 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 312 transitions, 2889 flow [2024-06-21 19:20:38,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-21 19:20:38,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:38,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:38,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-21 19:20:38,260 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:38,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:38,260 INFO L85 PathProgramCache]: Analyzing trace with hash 323909482, now seen corresponding path program 32 times [2024-06-21 19:20:38,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:38,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261931452] [2024-06-21 19:20:38,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:38,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:38,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:40,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:40,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:40,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261931452] [2024-06-21 19:20:40,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261931452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:40,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:40,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:20:40,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749253743] [2024-06-21 19:20:40,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:40,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:20:40,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:40,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:20:40,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:20:40,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:20:40,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 312 transitions, 2889 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:40,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:40,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:20:40,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:41,031 INFO L124 PetriNetUnfolderBase]: 750/1497 cut-off events. [2024-06-21 19:20:41,031 INFO L125 PetriNetUnfolderBase]: For 135042/135042 co-relation queries the response was YES. [2024-06-21 19:20:41,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7631 conditions, 1497 events. 750/1497 cut-off events. For 135042/135042 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9715 event pairs, 132 based on Foata normal form. 2/1493 useless extension candidates. Maximal degree in co-relation 7452. Up to 945 conditions per place. [2024-06-21 19:20:41,049 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 216 selfloop transitions, 108 changer transitions 0/328 dead transitions. [2024-06-21 19:20:41,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 328 transitions, 3911 flow [2024-06-21 19:20:41,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:41,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:41,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-21 19:20:41,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630681818181818 [2024-06-21 19:20:41,050 INFO L175 Difference]: Start difference. First operand has 432 places, 312 transitions, 2889 flow. Second operand 11 states and 163 transitions. [2024-06-21 19:20:41,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 328 transitions, 3911 flow [2024-06-21 19:20:41,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 328 transitions, 3863 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 19:20:41,678 INFO L231 Difference]: Finished difference. Result has 433 places, 313 transitions, 3105 flow [2024-06-21 19:20:41,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2841, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3105, PETRI_PLACES=433, PETRI_TRANSITIONS=313} [2024-06-21 19:20:41,678 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 402 predicate places. [2024-06-21 19:20:41,678 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 313 transitions, 3105 flow [2024-06-21 19:20:41,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:41,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:41,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:41,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-21 19:20:41,679 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:41,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:41,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1446998100, now seen corresponding path program 33 times [2024-06-21 19:20:41,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:41,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092504392] [2024-06-21 19:20:41,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:41,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:43,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:43,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:43,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092504392] [2024-06-21 19:20:43,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092504392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:43,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:43,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:20:43,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275871116] [2024-06-21 19:20:43,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:43,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:20:43,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:43,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:20:43,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:20:43,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:20:43,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 313 transitions, 3105 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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) [2024-06-21 19:20:43,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:43,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:20:43,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:44,038 INFO L124 PetriNetUnfolderBase]: 754/1505 cut-off events. [2024-06-21 19:20:44,038 INFO L125 PetriNetUnfolderBase]: For 138264/138264 co-relation queries the response was YES. [2024-06-21 19:20:44,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7959 conditions, 1505 events. 754/1505 cut-off events. For 138264/138264 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9758 event pairs, 140 based on Foata normal form. 2/1501 useless extension candidates. Maximal degree in co-relation 7779. Up to 1182 conditions per place. [2024-06-21 19:20:44,057 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 226 selfloop transitions, 95 changer transitions 0/325 dead transitions. [2024-06-21 19:20:44,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 325 transitions, 3817 flow [2024-06-21 19:20:44,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:44,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:44,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 158 transitions. [2024-06-21 19:20:44,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-06-21 19:20:44,058 INFO L175 Difference]: Start difference. First operand has 433 places, 313 transitions, 3105 flow. Second operand 11 states and 158 transitions. [2024-06-21 19:20:44,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 325 transitions, 3817 flow [2024-06-21 19:20:44,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 325 transitions, 3548 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-21 19:20:44,745 INFO L231 Difference]: Finished difference. Result has 434 places, 314 transitions, 3078 flow [2024-06-21 19:20:44,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2843, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3078, PETRI_PLACES=434, PETRI_TRANSITIONS=314} [2024-06-21 19:20:44,745 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 403 predicate places. [2024-06-21 19:20:44,745 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 314 transitions, 3078 flow [2024-06-21 19:20:44,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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) [2024-06-21 19:20:44,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:44,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:44,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-21 19:20:44,746 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:44,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:44,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1446790710, now seen corresponding path program 34 times [2024-06-21 19:20:44,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:44,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527841123] [2024-06-21 19:20:44,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:44,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:44,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:46,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:46,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:46,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527841123] [2024-06-21 19:20:46,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527841123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:46,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:46,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:20:46,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735132788] [2024-06-21 19:20:46,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:46,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:20:46,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:46,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:20:46,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:20:47,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:20:47,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 314 transitions, 3078 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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) [2024-06-21 19:20:47,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:47,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:20:47,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:47,580 INFO L124 PetriNetUnfolderBase]: 758/1513 cut-off events. [2024-06-21 19:20:47,580 INFO L125 PetriNetUnfolderBase]: For 139435/139435 co-relation queries the response was YES. [2024-06-21 19:20:47,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7822 conditions, 1513 events. 758/1513 cut-off events. For 139435/139435 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 9801 event pairs, 140 based on Foata normal form. 2/1509 useless extension candidates. Maximal degree in co-relation 7643. Up to 1176 conditions per place. [2024-06-21 19:20:47,598 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 227 selfloop transitions, 96 changer transitions 0/327 dead transitions. [2024-06-21 19:20:47,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 327 transitions, 3791 flow [2024-06-21 19:20:47,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:47,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:47,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-21 19:20:47,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-21 19:20:47,599 INFO L175 Difference]: Start difference. First operand has 434 places, 314 transitions, 3078 flow. Second operand 11 states and 160 transitions. [2024-06-21 19:20:47,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 327 transitions, 3791 flow [2024-06-21 19:20:48,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 327 transitions, 3499 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-21 19:20:48,233 INFO L231 Difference]: Finished difference. Result has 435 places, 315 transitions, 3025 flow [2024-06-21 19:20:48,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2786, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3025, PETRI_PLACES=435, PETRI_TRANSITIONS=315} [2024-06-21 19:20:48,233 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 404 predicate places. [2024-06-21 19:20:48,233 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 315 transitions, 3025 flow [2024-06-21 19:20:48,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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) [2024-06-21 19:20:48,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:48,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:48,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-21 19:20:48,234 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:48,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:48,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1240116382, now seen corresponding path program 35 times [2024-06-21 19:20:48,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:48,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537278375] [2024-06-21 19:20:48,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:48,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:49,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:49,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:49,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537278375] [2024-06-21 19:20:49,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537278375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:49,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:49,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:20:49,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642980644] [2024-06-21 19:20:49,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:49,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:20:49,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:49,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:20:49,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:20:50,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:20:50,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 315 transitions, 3025 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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) [2024-06-21 19:20:50,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:50,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:20:50,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:50,582 INFO L124 PetriNetUnfolderBase]: 755/1508 cut-off events. [2024-06-21 19:20:50,582 INFO L125 PetriNetUnfolderBase]: For 117620/117620 co-relation queries the response was YES. [2024-06-21 19:20:50,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7285 conditions, 1508 events. 755/1508 cut-off events. For 117620/117620 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 9789 event pairs, 137 based on Foata normal form. 2/1504 useless extension candidates. Maximal degree in co-relation 7106. Up to 1091 conditions per place. [2024-06-21 19:20:50,601 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 220 selfloop transitions, 104 changer transitions 0/328 dead transitions. [2024-06-21 19:20:50,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 328 transitions, 3701 flow [2024-06-21 19:20:50,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:50,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:50,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-21 19:20:50,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-21 19:20:50,602 INFO L175 Difference]: Start difference. First operand has 435 places, 315 transitions, 3025 flow. Second operand 11 states and 160 transitions. [2024-06-21 19:20:50,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 328 transitions, 3701 flow [2024-06-21 19:20:51,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 328 transitions, 3463 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-21 19:20:51,194 INFO L231 Difference]: Finished difference. Result has 437 places, 315 transitions, 2999 flow [2024-06-21 19:20:51,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2787, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2999, PETRI_PLACES=437, PETRI_TRANSITIONS=315} [2024-06-21 19:20:51,194 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 406 predicate places. [2024-06-21 19:20:51,195 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 315 transitions, 2999 flow [2024-06-21 19:20:51,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 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) [2024-06-21 19:20:51,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:51,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:51,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-21 19:20:51,195 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:51,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:51,196 INFO L85 PathProgramCache]: Analyzing trace with hash -233813210, now seen corresponding path program 8 times [2024-06-21 19:20:51,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:51,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836266627] [2024-06-21 19:20:51,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:51,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:53,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:53,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:53,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836266627] [2024-06-21 19:20:53,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836266627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:53,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:53,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:53,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379429614] [2024-06-21 19:20:53,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:53,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:53,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:53,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:53,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:53,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:20:53,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 315 transitions, 2999 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:53,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:53,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:20:53,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:54,058 INFO L124 PetriNetUnfolderBase]: 767/1536 cut-off events. [2024-06-21 19:20:54,058 INFO L125 PetriNetUnfolderBase]: For 187859/187859 co-relation queries the response was YES. [2024-06-21 19:20:54,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7404 conditions, 1536 events. 767/1536 cut-off events. For 187859/187859 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 9976 event pairs, 145 based on Foata normal form. 8/1538 useless extension candidates. Maximal degree in co-relation 7224. Up to 1175 conditions per place. [2024-06-21 19:20:54,075 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 210 selfloop transitions, 107 changer transitions 9/330 dead transitions. [2024-06-21 19:20:54,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 330 transitions, 3737 flow [2024-06-21 19:20:54,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:20:54,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:20:54,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 173 transitions. [2024-06-21 19:20:54,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4505208333333333 [2024-06-21 19:20:54,076 INFO L175 Difference]: Start difference. First operand has 437 places, 315 transitions, 2999 flow. Second operand 12 states and 173 transitions. [2024-06-21 19:20:54,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 330 transitions, 3737 flow [2024-06-21 19:20:54,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 330 transitions, 3223 flow, removed 15 selfloop flow, removed 13 redundant places. [2024-06-21 19:20:54,765 INFO L231 Difference]: Finished difference. Result has 436 places, 312 transitions, 2685 flow [2024-06-21 19:20:54,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2485, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2685, PETRI_PLACES=436, PETRI_TRANSITIONS=312} [2024-06-21 19:20:54,766 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 405 predicate places. [2024-06-21 19:20:54,766 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 312 transitions, 2685 flow [2024-06-21 19:20:54,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:54,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:54,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:54,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-21 19:20:54,766 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:54,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:54,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1474948314, now seen corresponding path program 9 times [2024-06-21 19:20:54,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:54,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207719719] [2024-06-21 19:20:54,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:54,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:56,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:56,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:56,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207719719] [2024-06-21 19:20:56,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207719719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:56,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:56,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:56,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964901631] [2024-06-21 19:20:56,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:56,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:56,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:56,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:56,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:57,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:20:57,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 312 transitions, 2685 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:57,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:57,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:20:57,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:57,633 INFO L124 PetriNetUnfolderBase]: 762/1531 cut-off events. [2024-06-21 19:20:57,633 INFO L125 PetriNetUnfolderBase]: For 189491/189491 co-relation queries the response was YES. [2024-06-21 19:20:57,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6811 conditions, 1531 events. 762/1531 cut-off events. For 189491/189491 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9885 event pairs, 147 based on Foata normal form. 8/1533 useless extension candidates. Maximal degree in co-relation 6632. Up to 1162 conditions per place. [2024-06-21 19:20:57,650 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 219 selfloop transitions, 95 changer transitions 9/327 dead transitions. [2024-06-21 19:20:57,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 327 transitions, 3417 flow [2024-06-21 19:20:57,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:20:57,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:20:57,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 175 transitions. [2024-06-21 19:20:57,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557291666666667 [2024-06-21 19:20:57,651 INFO L175 Difference]: Start difference. First operand has 436 places, 312 transitions, 2685 flow. Second operand 12 states and 175 transitions. [2024-06-21 19:20:57,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 327 transitions, 3417 flow [2024-06-21 19:20:58,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 327 transitions, 3199 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 19:20:58,223 INFO L231 Difference]: Finished difference. Result has 434 places, 309 transitions, 2643 flow [2024-06-21 19:20:58,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2467, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2643, PETRI_PLACES=434, PETRI_TRANSITIONS=309} [2024-06-21 19:20:58,223 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 403 predicate places. [2024-06-21 19:20:58,223 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 309 transitions, 2643 flow [2024-06-21 19:20:58,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:58,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:58,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:58,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-21 19:20:58,224 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:58,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:58,224 INFO L85 PathProgramCache]: Analyzing trace with hash 188030804, now seen corresponding path program 10 times [2024-06-21 19:20:58,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:58,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976360782] [2024-06-21 19:20:58,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:58,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:59,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:59,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:59,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976360782] [2024-06-21 19:20:59,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976360782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:59,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:59,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:20:59,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840177839] [2024-06-21 19:20:59,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:59,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:20:59,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:59,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:20:59,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:00,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:21:00,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 309 transitions, 2643 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:00,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:00,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:21:00,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:00,727 INFO L124 PetriNetUnfolderBase]: 775/1564 cut-off events. [2024-06-21 19:21:00,727 INFO L125 PetriNetUnfolderBase]: For 253142/253142 co-relation queries the response was YES. [2024-06-21 19:21:00,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8168 conditions, 1564 events. 775/1564 cut-off events. For 253142/253142 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10137 event pairs, 155 based on Foata normal form. 6/1564 useless extension candidates. Maximal degree in co-relation 7990. Up to 1136 conditions per place. [2024-06-21 19:21:00,745 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 219 selfloop transitions, 99 changer transitions 6/328 dead transitions. [2024-06-21 19:21:00,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 328 transitions, 3721 flow [2024-06-21 19:21:00,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:21:00,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:21:00,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 177 transitions. [2024-06-21 19:21:00,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609375 [2024-06-21 19:21:00,746 INFO L175 Difference]: Start difference. First operand has 434 places, 309 transitions, 2643 flow. Second operand 12 states and 177 transitions. [2024-06-21 19:21:00,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 328 transitions, 3721 flow [2024-06-21 19:21:01,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 328 transitions, 3523 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 19:21:01,556 INFO L231 Difference]: Finished difference. Result has 432 places, 307 transitions, 2638 flow [2024-06-21 19:21:01,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2449, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2638, PETRI_PLACES=432, PETRI_TRANSITIONS=307} [2024-06-21 19:21:01,557 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 401 predicate places. [2024-06-21 19:21:01,557 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 307 transitions, 2638 flow [2024-06-21 19:21:01,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:01,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:01,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:01,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-21 19:21:01,557 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:01,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:01,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1474621884, now seen corresponding path program 11 times [2024-06-21 19:21:01,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:01,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727440565] [2024-06-21 19:21:01,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:01,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:03,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:03,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:03,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727440565] [2024-06-21 19:21:03,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727440565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:03,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:03,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:03,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053113289] [2024-06-21 19:21:03,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:03,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:03,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:03,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:03,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:03,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:21:03,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 307 transitions, 2638 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:03,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:03,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:21:03,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:04,034 INFO L124 PetriNetUnfolderBase]: 791/1600 cut-off events. [2024-06-21 19:21:04,034 INFO L125 PetriNetUnfolderBase]: For 340064/340064 co-relation queries the response was YES. [2024-06-21 19:21:04,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9599 conditions, 1600 events. 791/1600 cut-off events. For 340064/340064 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10389 event pairs, 167 based on Foata normal form. 6/1600 useless extension candidates. Maximal degree in co-relation 9422. Up to 1172 conditions per place. [2024-06-21 19:21:04,053 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 222 selfloop transitions, 93 changer transitions 7/326 dead transitions. [2024-06-21 19:21:04,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 326 transitions, 3710 flow [2024-06-21 19:21:04,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:21:04,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:21:04,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 177 transitions. [2024-06-21 19:21:04,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609375 [2024-06-21 19:21:04,054 INFO L175 Difference]: Start difference. First operand has 432 places, 307 transitions, 2638 flow. Second operand 12 states and 177 transitions. [2024-06-21 19:21:04,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 326 transitions, 3710 flow [2024-06-21 19:21:05,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 326 transitions, 3512 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 19:21:05,284 INFO L231 Difference]: Finished difference. Result has 431 places, 304 transitions, 2614 flow [2024-06-21 19:21:05,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2444, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2614, PETRI_PLACES=431, PETRI_TRANSITIONS=304} [2024-06-21 19:21:05,285 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 400 predicate places. [2024-06-21 19:21:05,285 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 304 transitions, 2614 flow [2024-06-21 19:21:05,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:05,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:05,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:05,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-21 19:21:05,285 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:05,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:05,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1484145084, now seen corresponding path program 12 times [2024-06-21 19:21:05,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:05,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892788056] [2024-06-21 19:21:05,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:05,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:07,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:07,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:07,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892788056] [2024-06-21 19:21:07,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892788056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:07,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:07,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:21:07,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207653464] [2024-06-21 19:21:07,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:07,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:21:07,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:07,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:21:07,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:21:07,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:21:07,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 304 transitions, 2614 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:07,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:07,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:21:07,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:07,658 INFO L124 PetriNetUnfolderBase]: 788/1587 cut-off events. [2024-06-21 19:21:07,658 INFO L125 PetriNetUnfolderBase]: For 361357/361357 co-relation queries the response was YES. [2024-06-21 19:21:07,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9590 conditions, 1587 events. 788/1587 cut-off events. For 361357/361357 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10310 event pairs, 169 based on Foata normal form. 8/1589 useless extension candidates. Maximal degree in co-relation 9414. Up to 1239 conditions per place. [2024-06-21 19:21:07,677 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 221 selfloop transitions, 85 changer transitions 9/319 dead transitions. [2024-06-21 19:21:07,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 319 transitions, 3330 flow [2024-06-21 19:21:07,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:21:07,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:21:07,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 174 transitions. [2024-06-21 19:21:07,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-21 19:21:07,678 INFO L175 Difference]: Start difference. First operand has 431 places, 304 transitions, 2614 flow. Second operand 12 states and 174 transitions. [2024-06-21 19:21:07,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 319 transitions, 3330 flow [2024-06-21 19:21:08,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 319 transitions, 3142 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-21 19:21:08,913 INFO L231 Difference]: Finished difference. Result has 428 places, 301 transitions, 2581 flow [2024-06-21 19:21:08,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2428, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2581, PETRI_PLACES=428, PETRI_TRANSITIONS=301} [2024-06-21 19:21:08,914 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 397 predicate places. [2024-06-21 19:21:08,914 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 301 transitions, 2581 flow [2024-06-21 19:21:08,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:08,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:08,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:08,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-21 19:21:08,915 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:08,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:08,915 INFO L85 PathProgramCache]: Analyzing trace with hash -243009980, now seen corresponding path program 13 times [2024-06-21 19:21:08,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:08,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825160684] [2024-06-21 19:21:08,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:08,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:10,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:10,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:10,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825160684] [2024-06-21 19:21:10,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825160684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:10,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:10,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:21:10,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325812558] [2024-06-21 19:21:10,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:10,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:21:10,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:10,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:21:10,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:21:10,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:21:10,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 301 transitions, 2581 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:10,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:10,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:21:10,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:11,282 INFO L124 PetriNetUnfolderBase]: 783/1584 cut-off events. [2024-06-21 19:21:11,283 INFO L125 PetriNetUnfolderBase]: For 352700/352700 co-relation queries the response was YES. [2024-06-21 19:21:11,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9488 conditions, 1584 events. 783/1584 cut-off events. For 352700/352700 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10335 event pairs, 171 based on Foata normal form. 8/1586 useless extension candidates. Maximal degree in co-relation 9314. Up to 1232 conditions per place. [2024-06-21 19:21:11,301 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 203 selfloop transitions, 100 changer transitions 9/316 dead transitions. [2024-06-21 19:21:11,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 316 transitions, 3289 flow [2024-06-21 19:21:11,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:21:11,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:21:11,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 172 transitions. [2024-06-21 19:21:11,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-21 19:21:11,302 INFO L175 Difference]: Start difference. First operand has 428 places, 301 transitions, 2581 flow. Second operand 12 states and 172 transitions. [2024-06-21 19:21:11,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 316 transitions, 3289 flow [2024-06-21 19:21:12,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 316 transitions, 3115 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 19:21:12,469 INFO L231 Difference]: Finished difference. Result has 426 places, 298 transitions, 2592 flow [2024-06-21 19:21:12,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2407, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2592, PETRI_PLACES=426, PETRI_TRANSITIONS=298} [2024-06-21 19:21:12,469 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 395 predicate places. [2024-06-21 19:21:12,469 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 298 transitions, 2592 flow [2024-06-21 19:21:12,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:12,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:12,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:12,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-21 19:21:12,469 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:12,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:12,470 INFO L85 PathProgramCache]: Analyzing trace with hash -233486780, now seen corresponding path program 14 times [2024-06-21 19:21:12,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:12,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951390694] [2024-06-21 19:21:12,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:12,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:14,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:14,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:14,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951390694] [2024-06-21 19:21:14,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951390694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:14,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:14,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:14,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103595173] [2024-06-21 19:21:14,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:14,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:14,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:14,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:14,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:14,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:21:14,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 298 transitions, 2592 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:14,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:14,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:21:14,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:14,961 INFO L124 PetriNetUnfolderBase]: 796/1617 cut-off events. [2024-06-21 19:21:14,962 INFO L125 PetriNetUnfolderBase]: For 409300/409300 co-relation queries the response was YES. [2024-06-21 19:21:14,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10837 conditions, 1617 events. 796/1617 cut-off events. For 409300/409300 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10568 event pairs, 179 based on Foata normal form. 6/1617 useless extension candidates. Maximal degree in co-relation 10664. Up to 1212 conditions per place. [2024-06-21 19:21:14,981 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 206 selfloop transitions, 100 changer transitions 7/317 dead transitions. [2024-06-21 19:21:14,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 317 transitions, 3636 flow [2024-06-21 19:21:14,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:21:14,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:21:14,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 175 transitions. [2024-06-21 19:21:14,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557291666666667 [2024-06-21 19:21:14,982 INFO L175 Difference]: Start difference. First operand has 426 places, 298 transitions, 2592 flow. Second operand 12 states and 175 transitions. [2024-06-21 19:21:14,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 317 transitions, 3636 flow [2024-06-21 19:21:16,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 317 transitions, 3428 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 19:21:16,328 INFO L231 Difference]: Finished difference. Result has 424 places, 295 transitions, 2572 flow [2024-06-21 19:21:16,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2388, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2572, PETRI_PLACES=424, PETRI_TRANSITIONS=295} [2024-06-21 19:21:16,329 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 393 predicate places. [2024-06-21 19:21:16,329 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 295 transitions, 2572 flow [2024-06-21 19:21:16,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:16,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:16,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:16,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-21 19:21:16,329 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:16,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:16,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1272773722, now seen corresponding path program 15 times [2024-06-21 19:21:16,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:16,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6835823] [2024-06-21 19:21:16,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:16,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:18,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:18,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6835823] [2024-06-21 19:21:18,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6835823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:18,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:18,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:18,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500807868] [2024-06-21 19:21:18,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:18,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:18,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:18,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:18,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:18,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:21:18,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 295 transitions, 2572 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:18,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:18,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:21:18,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:19,098 INFO L124 PetriNetUnfolderBase]: 793/1606 cut-off events. [2024-06-21 19:21:19,098 INFO L125 PetriNetUnfolderBase]: For 428885/428885 co-relation queries the response was YES. [2024-06-21 19:21:19,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10814 conditions, 1606 events. 793/1606 cut-off events. For 428885/428885 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 10477 event pairs, 181 based on Foata normal form. 8/1608 useless extension candidates. Maximal degree in co-relation 10642. Up to 1258 conditions per place. [2024-06-21 19:21:19,117 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 218 selfloop transitions, 79 changer transitions 9/310 dead transitions. [2024-06-21 19:21:19,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 310 transitions, 3268 flow [2024-06-21 19:21:19,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:21:19,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:21:19,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 176 transitions. [2024-06-21 19:21:19,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-21 19:21:19,118 INFO L175 Difference]: Start difference. First operand has 424 places, 295 transitions, 2572 flow. Second operand 12 states and 176 transitions. [2024-06-21 19:21:19,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 310 transitions, 3268 flow [2024-06-21 19:21:20,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 310 transitions, 3060 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-21 19:21:20,343 INFO L231 Difference]: Finished difference. Result has 421 places, 292 transitions, 2507 flow [2024-06-21 19:21:20,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2366, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2507, PETRI_PLACES=421, PETRI_TRANSITIONS=292} [2024-06-21 19:21:20,344 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 390 predicate places. [2024-06-21 19:21:20,344 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 292 transitions, 2507 flow [2024-06-21 19:21:20,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:20,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:20,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:20,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-21 19:21:20,345 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:20,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:20,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1740645594, now seen corresponding path program 16 times [2024-06-21 19:21:20,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:20,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573778638] [2024-06-21 19:21:20,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:20,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:22,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:22,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:22,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573778638] [2024-06-21 19:21:22,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573778638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:22,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:22,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:21:22,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860675246] [2024-06-21 19:21:22,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:22,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:21:22,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:22,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:21:22,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:21:22,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:21:22,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 292 transitions, 2507 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:22,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:22,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:21:22,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:23,314 INFO L124 PetriNetUnfolderBase]: 788/1601 cut-off events. [2024-06-21 19:21:23,314 INFO L125 PetriNetUnfolderBase]: For 415915/415915 co-relation queries the response was YES. [2024-06-21 19:21:23,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10650 conditions, 1601 events. 788/1601 cut-off events. For 415915/415915 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 10470 event pairs, 183 based on Foata normal form. 8/1603 useless extension candidates. Maximal degree in co-relation 10480. Up to 1251 conditions per place. [2024-06-21 19:21:23,334 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 215 selfloop transitions, 79 changer transitions 9/307 dead transitions. [2024-06-21 19:21:23,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 307 transitions, 3195 flow [2024-06-21 19:21:23,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:21:23,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:21:23,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 174 transitions. [2024-06-21 19:21:23,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-21 19:21:23,335 INFO L175 Difference]: Start difference. First operand has 421 places, 292 transitions, 2507 flow. Second operand 12 states and 174 transitions. [2024-06-21 19:21:23,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 307 transitions, 3195 flow [2024-06-21 19:21:24,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 307 transitions, 3033 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 19:21:24,753 INFO L231 Difference]: Finished difference. Result has 419 places, 289 transitions, 2486 flow [2024-06-21 19:21:24,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2345, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2486, PETRI_PLACES=419, PETRI_TRANSITIONS=289} [2024-06-21 19:21:24,753 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 388 predicate places. [2024-06-21 19:21:24,753 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 289 transitions, 2486 flow [2024-06-21 19:21:24,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:24,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:24,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:24,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-21 19:21:24,754 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:24,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:24,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1528861478, now seen corresponding path program 17 times [2024-06-21 19:21:24,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:24,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69431904] [2024-06-21 19:21:24,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:24,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:26,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:26,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:26,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69431904] [2024-06-21 19:21:26,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69431904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:26,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:26,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:26,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550878746] [2024-06-21 19:21:26,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:26,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:26,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:26,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:26,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:27,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:21:27,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 289 transitions, 2486 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:27,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:27,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:21:27,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:28,001 INFO L124 PetriNetUnfolderBase]: 761/1546 cut-off events. [2024-06-21 19:21:28,001 INFO L125 PetriNetUnfolderBase]: For 327950/327950 co-relation queries the response was YES. [2024-06-21 19:21:28,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9187 conditions, 1546 events. 761/1546 cut-off events. For 327950/327950 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 10043 event pairs, 169 based on Foata normal form. 8/1548 useless extension candidates. Maximal degree in co-relation 9018. Up to 1198 conditions per place. [2024-06-21 19:21:28,019 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 208 selfloop transitions, 83 changer transitions 9/304 dead transitions. [2024-06-21 19:21:28,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 304 transitions, 3168 flow [2024-06-21 19:21:28,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:21:28,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:21:28,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 173 transitions. [2024-06-21 19:21:28,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4505208333333333 [2024-06-21 19:21:28,020 INFO L175 Difference]: Start difference. First operand has 419 places, 289 transitions, 2486 flow. Second operand 12 states and 173 transitions. [2024-06-21 19:21:28,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 304 transitions, 3168 flow [2024-06-21 19:21:29,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 304 transitions, 3006 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 19:21:29,140 INFO L231 Difference]: Finished difference. Result has 417 places, 286 transitions, 2473 flow [2024-06-21 19:21:29,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2324, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2473, PETRI_PLACES=417, PETRI_TRANSITIONS=286} [2024-06-21 19:21:29,140 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 386 predicate places. [2024-06-21 19:21:29,140 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 286 transitions, 2473 flow [2024-06-21 19:21:29,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:29,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:29,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:29,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-21 19:21:29,141 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:29,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:29,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1033045806, now seen corresponding path program 18 times [2024-06-21 19:21:29,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:29,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277186535] [2024-06-21 19:21:29,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:29,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:30,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:30,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:30,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277186535] [2024-06-21 19:21:30,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277186535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:30,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:30,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:21:30,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536579637] [2024-06-21 19:21:30,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:30,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:21:30,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:30,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:21:30,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:21:30,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:21:30,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 286 transitions, 2473 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:30,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:30,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:21:30,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:31,468 INFO L124 PetriNetUnfolderBase]: 756/1541 cut-off events. [2024-06-21 19:21:31,468 INFO L125 PetriNetUnfolderBase]: For 325015/325015 co-relation queries the response was YES. [2024-06-21 19:21:31,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9138 conditions, 1541 events. 756/1541 cut-off events. For 325015/325015 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 10009 event pairs, 171 based on Foata normal form. 8/1543 useless extension candidates. Maximal degree in co-relation 8970. Up to 1179 conditions per place. [2024-06-21 19:21:31,486 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 199 selfloop transitions, 88 changer transitions 10/301 dead transitions. [2024-06-21 19:21:31,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 301 transitions, 3149 flow [2024-06-21 19:21:31,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:21:31,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:21:31,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-06-21 19:21:31,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-21 19:21:31,487 INFO L175 Difference]: Start difference. First operand has 417 places, 286 transitions, 2473 flow. Second operand 11 states and 165 transitions. [2024-06-21 19:21:31,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 301 transitions, 3149 flow [2024-06-21 19:21:32,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 301 transitions, 2912 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-21 19:21:32,433 INFO L231 Difference]: Finished difference. Result has 412 places, 282 transitions, 2394 flow [2024-06-21 19:21:32,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2240, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2394, PETRI_PLACES=412, PETRI_TRANSITIONS=282} [2024-06-21 19:21:32,434 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 381 predicate places. [2024-06-21 19:21:32,434 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 282 transitions, 2394 flow [2024-06-21 19:21:32,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:32,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:32,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:32,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-21 19:21:32,434 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:32,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:32,435 INFO L85 PathProgramCache]: Analyzing trace with hash -499510490, now seen corresponding path program 19 times [2024-06-21 19:21:32,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:32,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925608796] [2024-06-21 19:21:32,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:32,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:34,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:34,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:34,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925608796] [2024-06-21 19:21:34,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925608796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:34,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:34,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:21:34,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94911707] [2024-06-21 19:21:34,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:34,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:21:34,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:34,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:21:34,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:21:34,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:21:34,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 282 transitions, 2394 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:34,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:34,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:21:34,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:35,145 INFO L124 PetriNetUnfolderBase]: 728/1483 cut-off events. [2024-06-21 19:21:35,145 INFO L125 PetriNetUnfolderBase]: For 241457/241457 co-relation queries the response was YES. [2024-06-21 19:21:35,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7550 conditions, 1483 events. 728/1483 cut-off events. For 241457/241457 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9591 event pairs, 159 based on Foata normal form. 8/1485 useless extension candidates. Maximal degree in co-relation 7385. Up to 1135 conditions per place. [2024-06-21 19:21:35,161 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 189 selfloop transitions, 95 changer transitions 9/297 dead transitions. [2024-06-21 19:21:35,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 297 transitions, 3058 flow [2024-06-21 19:21:35,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:21:35,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:21:35,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 171 transitions. [2024-06-21 19:21:35,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453125 [2024-06-21 19:21:35,162 INFO L175 Difference]: Start difference. First operand has 412 places, 282 transitions, 2394 flow. Second operand 12 states and 171 transitions. [2024-06-21 19:21:35,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 297 transitions, 3058 flow [2024-06-21 19:21:35,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 297 transitions, 2872 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-21 19:21:35,838 INFO L231 Difference]: Finished difference. Result has 409 places, 279 transitions, 2384 flow [2024-06-21 19:21:35,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2210, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2384, PETRI_PLACES=409, PETRI_TRANSITIONS=279} [2024-06-21 19:21:35,838 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 378 predicate places. [2024-06-21 19:21:35,838 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 279 transitions, 2384 flow [2024-06-21 19:21:35,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:35,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:35,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:35,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-21 19:21:35,839 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:35,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:35,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1318985118, now seen corresponding path program 20 times [2024-06-21 19:21:35,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:35,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366451785] [2024-06-21 19:21:35,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:35,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:38,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:38,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:38,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366451785] [2024-06-21 19:21:38,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366451785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:38,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:38,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:38,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200057818] [2024-06-21 19:21:38,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:38,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:38,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:38,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:38,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:38,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:21:38,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 279 transitions, 2384 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:38,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:38,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:21:38,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:38,951 INFO L124 PetriNetUnfolderBase]: 734/1512 cut-off events. [2024-06-21 19:21:38,951 INFO L125 PetriNetUnfolderBase]: For 270052/270052 co-relation queries the response was YES. [2024-06-21 19:21:38,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8398 conditions, 1512 events. 734/1512 cut-off events. For 270052/270052 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 9818 event pairs, 279 based on Foata normal form. 6/1517 useless extension candidates. Maximal degree in co-relation 8234. Up to 1276 conditions per place. [2024-06-21 19:21:38,967 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 262 selfloop transitions, 25 changer transitions 9/300 dead transitions. [2024-06-21 19:21:38,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 300 transitions, 3372 flow [2024-06-21 19:21:38,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-21 19:21:38,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-21 19:21:38,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 174 transitions. [2024-06-21 19:21:38,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38839285714285715 [2024-06-21 19:21:38,969 INFO L175 Difference]: Start difference. First operand has 409 places, 279 transitions, 2384 flow. Second operand 14 states and 174 transitions. [2024-06-21 19:21:38,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 300 transitions, 3372 flow [2024-06-21 19:21:39,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 300 transitions, 3107 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-21 19:21:39,813 INFO L231 Difference]: Finished difference. Result has 407 places, 276 transitions, 2164 flow [2024-06-21 19:21:39,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2129, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2164, PETRI_PLACES=407, PETRI_TRANSITIONS=276} [2024-06-21 19:21:39,813 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 376 predicate places. [2024-06-21 19:21:39,813 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 276 transitions, 2164 flow [2024-06-21 19:21:39,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:39,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:39,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:39,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-21 19:21:39,813 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:39,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:39,814 INFO L85 PathProgramCache]: Analyzing trace with hash -67039184, now seen corresponding path program 21 times [2024-06-21 19:21:39,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:39,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747835480] [2024-06-21 19:21:39,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:39,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:41,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:41,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:41,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747835480] [2024-06-21 19:21:41,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747835480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:41,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:41,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:41,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471566351] [2024-06-21 19:21:41,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:41,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:41,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:41,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:41,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:42,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:21:42,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 276 transitions, 2164 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:42,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:42,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:21:42,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:42,783 INFO L124 PetriNetUnfolderBase]: 746/1532 cut-off events. [2024-06-21 19:21:42,783 INFO L125 PetriNetUnfolderBase]: For 340730/340730 co-relation queries the response was YES. [2024-06-21 19:21:42,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9344 conditions, 1532 events. 746/1532 cut-off events. For 340730/340730 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 9908 event pairs, 289 based on Foata normal form. 6/1537 useless extension candidates. Maximal degree in co-relation 9182. Up to 1340 conditions per place. [2024-06-21 19:21:42,800 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 261 selfloop transitions, 25 changer transitions 6/296 dead transitions. [2024-06-21 19:21:42,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 296 transitions, 3134 flow [2024-06-21 19:21:42,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-21 19:21:42,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-21 19:21:42,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 174 transitions. [2024-06-21 19:21:42,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38839285714285715 [2024-06-21 19:21:42,801 INFO L175 Difference]: Start difference. First operand has 407 places, 276 transitions, 2164 flow. Second operand 14 states and 174 transitions. [2024-06-21 19:21:42,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 296 transitions, 3134 flow [2024-06-21 19:21:44,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 296 transitions, 3080 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-21 19:21:44,059 INFO L231 Difference]: Finished difference. Result has 404 places, 274 transitions, 2156 flow [2024-06-21 19:21:44,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2156, PETRI_PLACES=404, PETRI_TRANSITIONS=274} [2024-06-21 19:21:44,060 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 373 predicate places. [2024-06-21 19:21:44,060 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 274 transitions, 2156 flow [2024-06-21 19:21:44,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:44,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:44,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:44,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-21 19:21:44,060 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:44,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:44,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1690209498, now seen corresponding path program 22 times [2024-06-21 19:21:44,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:44,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681488046] [2024-06-21 19:21:44,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:44,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:46,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:46,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:46,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681488046] [2024-06-21 19:21:46,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681488046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:46,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:46,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:46,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308013433] [2024-06-21 19:21:46,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:46,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:46,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:46,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:46,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:46,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:21:46,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 274 transitions, 2156 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:46,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:46,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:21:46,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:47,125 INFO L124 PetriNetUnfolderBase]: 722/1480 cut-off events. [2024-06-21 19:21:47,125 INFO L125 PetriNetUnfolderBase]: For 278453/278453 co-relation queries the response was YES. [2024-06-21 19:21:47,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7998 conditions, 1480 events. 722/1480 cut-off events. For 278453/278453 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 9519 event pairs, 281 based on Foata normal form. 8/1487 useless extension candidates. Maximal degree in co-relation 7838. Up to 1346 conditions per place. [2024-06-21 19:21:47,141 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 256 selfloop transitions, 18 changer transitions 12/290 dead transitions. [2024-06-21 19:21:47,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 290 transitions, 2802 flow [2024-06-21 19:21:47,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-21 19:21:47,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-21 19:21:47,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 168 transitions. [2024-06-21 19:21:47,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 19:21:47,142 INFO L175 Difference]: Start difference. First operand has 404 places, 274 transitions, 2156 flow. Second operand 14 states and 168 transitions. [2024-06-21 19:21:47,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 290 transitions, 2802 flow [2024-06-21 19:21:48,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 290 transitions, 2750 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-21 19:21:48,112 INFO L231 Difference]: Finished difference. Result has 403 places, 269 transitions, 2110 flow [2024-06-21 19:21:48,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2104, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2110, PETRI_PLACES=403, PETRI_TRANSITIONS=269} [2024-06-21 19:21:48,113 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 372 predicate places. [2024-06-21 19:21:48,113 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 269 transitions, 2110 flow [2024-06-21 19:21:48,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:48,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:48,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:48,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-21 19:21:48,113 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:48,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:48,113 INFO L85 PathProgramCache]: Analyzing trace with hash 583436100, now seen corresponding path program 23 times [2024-06-21 19:21:48,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:48,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282080888] [2024-06-21 19:21:48,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:48,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:50,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:50,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:50,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282080888] [2024-06-21 19:21:50,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282080888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:50,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:50,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:50,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898844505] [2024-06-21 19:21:50,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:50,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:50,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:50,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:50,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:50,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:21:50,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 269 transitions, 2110 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:50,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:50,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:21:50,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:51,040 INFO L124 PetriNetUnfolderBase]: 715/1465 cut-off events. [2024-06-21 19:21:51,040 INFO L125 PetriNetUnfolderBase]: For 275853/275853 co-relation queries the response was YES. [2024-06-21 19:21:51,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7907 conditions, 1465 events. 715/1465 cut-off events. For 275853/275853 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 9367 event pairs, 283 based on Foata normal form. 8/1472 useless extension candidates. Maximal degree in co-relation 7748. Up to 1342 conditions per place. [2024-06-21 19:21:51,054 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 255 selfloop transitions, 16 changer transitions 9/284 dead transitions. [2024-06-21 19:21:51,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 284 transitions, 2742 flow [2024-06-21 19:21:51,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:21:51,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:21:51,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-21 19:21:51,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-21 19:21:51,055 INFO L175 Difference]: Start difference. First operand has 403 places, 269 transitions, 2110 flow. Second operand 12 states and 147 transitions. [2024-06-21 19:21:51,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 284 transitions, 2742 flow [2024-06-21 19:21:51,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 284 transitions, 2690 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-06-21 19:21:51,960 INFO L231 Difference]: Finished difference. Result has 394 places, 266 transitions, 2078 flow [2024-06-21 19:21:51,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2062, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2078, PETRI_PLACES=394, PETRI_TRANSITIONS=266} [2024-06-21 19:21:51,961 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 363 predicate places. [2024-06-21 19:21:51,961 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 266 transitions, 2078 flow [2024-06-21 19:21:51,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:51,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:51,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:51,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-21 19:21:51,962 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:51,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:51,962 INFO L85 PathProgramCache]: Analyzing trace with hash 583445400, now seen corresponding path program 24 times [2024-06-21 19:21:51,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:51,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503528759] [2024-06-21 19:21:51,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:51,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:53,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:53,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:53,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503528759] [2024-06-21 19:21:53,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503528759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:53,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:53,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:53,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316806035] [2024-06-21 19:21:53,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:53,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:53,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:53,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:53,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:53,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:21:53,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 266 transitions, 2078 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:53,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:53,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:21:53,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:54,481 INFO L124 PetriNetUnfolderBase]: 706/1450 cut-off events. [2024-06-21 19:21:54,481 INFO L125 PetriNetUnfolderBase]: For 246043/246043 co-relation queries the response was YES. [2024-06-21 19:21:54,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7724 conditions, 1450 events. 706/1450 cut-off events. For 246043/246043 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 9240 event pairs, 277 based on Foata normal form. 6/1455 useless extension candidates. Maximal degree in co-relation 7568. Up to 1276 conditions per place. [2024-06-21 19:21:54,497 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 257 selfloop transitions, 17 changer transitions 7/285 dead transitions. [2024-06-21 19:21:54,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 285 transitions, 3008 flow [2024-06-21 19:21:54,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:21:54,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:21:54,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 159 transitions. [2024-06-21 19:21:54,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38221153846153844 [2024-06-21 19:21:54,498 INFO L175 Difference]: Start difference. First operand has 394 places, 266 transitions, 2078 flow. Second operand 13 states and 159 transitions. [2024-06-21 19:21:54,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 285 transitions, 3008 flow [2024-06-21 19:21:55,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 285 transitions, 2962 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-21 19:21:55,251 INFO L231 Difference]: Finished difference. Result has 393 places, 263 transitions, 2058 flow [2024-06-21 19:21:55,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2040, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2058, PETRI_PLACES=393, PETRI_TRANSITIONS=263} [2024-06-21 19:21:55,252 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-21 19:21:55,252 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 263 transitions, 2058 flow [2024-06-21 19:21:55,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:55,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:55,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:55,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-21 19:21:55,252 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:55,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:55,253 INFO L85 PathProgramCache]: Analyzing trace with hash -482887740, now seen corresponding path program 25 times [2024-06-21 19:21:55,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:55,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629082083] [2024-06-21 19:21:55,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:55,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:57,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:57,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:57,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629082083] [2024-06-21 19:21:57,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629082083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:57,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:57,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:57,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639251367] [2024-06-21 19:21:57,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:57,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:57,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:57,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:57,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:57,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:21:57,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 263 transitions, 2058 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:57,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:57,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:21:57,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:57,912 INFO L124 PetriNetUnfolderBase]: 681/1395 cut-off events. [2024-06-21 19:21:57,912 INFO L125 PetriNetUnfolderBase]: For 192267/192267 co-relation queries the response was YES. [2024-06-21 19:21:57,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6425 conditions, 1395 events. 681/1395 cut-off events. For 192267/192267 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 8868 event pairs, 269 based on Foata normal form. 8/1402 useless extension candidates. Maximal degree in co-relation 6270. Up to 1276 conditions per place. [2024-06-21 19:21:57,926 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 250 selfloop transitions, 15 changer transitions 9/278 dead transitions. [2024-06-21 19:21:57,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 278 transitions, 2672 flow [2024-06-21 19:21:57,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:21:57,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:21:57,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 154 transitions. [2024-06-21 19:21:57,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3701923076923077 [2024-06-21 19:21:57,927 INFO L175 Difference]: Start difference. First operand has 393 places, 263 transitions, 2058 flow. Second operand 13 states and 154 transitions. [2024-06-21 19:21:57,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 278 transitions, 2672 flow [2024-06-21 19:21:58,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 278 transitions, 2619 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-21 19:21:58,485 INFO L231 Difference]: Finished difference. Result has 389 places, 260 transitions, 2023 flow [2024-06-21 19:21:58,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2009, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2023, PETRI_PLACES=389, PETRI_TRANSITIONS=260} [2024-06-21 19:21:58,485 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 358 predicate places. [2024-06-21 19:21:58,485 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 260 transitions, 2023 flow [2024-06-21 19:21:58,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:58,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:58,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:58,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-21 19:21:58,486 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:58,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:58,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1792074338, now seen corresponding path program 26 times [2024-06-21 19:21:58,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:58,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893785816] [2024-06-21 19:21:58,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:58,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:00,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:00,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:00,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893785816] [2024-06-21 19:22:00,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893785816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:00,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:00,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:22:00,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355549994] [2024-06-21 19:22:00,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:00,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:22:00,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:00,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:22:00,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:22:00,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:22:00,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 260 transitions, 2023 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:00,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:00,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:22:00,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:00,772 INFO L124 PetriNetUnfolderBase]: 676/1385 cut-off events. [2024-06-21 19:22:00,772 INFO L125 PetriNetUnfolderBase]: For 187178/187178 co-relation queries the response was YES. [2024-06-21 19:22:00,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6314 conditions, 1385 events. 676/1385 cut-off events. For 187178/187178 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8801 event pairs, 154 based on Foata normal form. 8/1387 useless extension candidates. Maximal degree in co-relation 6162. Up to 1047 conditions per place. [2024-06-21 19:22:00,785 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 183 selfloop transitions, 79 changer transitions 9/275 dead transitions. [2024-06-21 19:22:00,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 275 transitions, 2627 flow [2024-06-21 19:22:00,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:22:00,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:22:00,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 169 transitions. [2024-06-21 19:22:00,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4401041666666667 [2024-06-21 19:22:00,786 INFO L175 Difference]: Start difference. First operand has 389 places, 260 transitions, 2023 flow. Second operand 12 states and 169 transitions. [2024-06-21 19:22:00,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 275 transitions, 2627 flow [2024-06-21 19:22:01,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 275 transitions, 2585 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-21 19:22:01,326 INFO L231 Difference]: Finished difference. Result has 384 places, 257 transitions, 2128 flow [2024-06-21 19:22:01,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1985, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2128, PETRI_PLACES=384, PETRI_TRANSITIONS=257} [2024-06-21 19:22:01,327 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2024-06-21 19:22:01,327 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 257 transitions, 2128 flow [2024-06-21 19:22:01,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:01,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:01,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:01,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-21 19:22:01,327 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:01,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:01,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1040455116, now seen corresponding path program 27 times [2024-06-21 19:22:01,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:01,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125070275] [2024-06-21 19:22:01,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:01,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:03,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:03,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:03,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125070275] [2024-06-21 19:22:03,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125070275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:03,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:03,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:22:03,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601423465] [2024-06-21 19:22:03,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:03,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:22:03,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:03,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:22:03,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:22:03,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:22:03,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 257 transitions, 2128 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:03,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:03,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:22:03,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:04,114 INFO L124 PetriNetUnfolderBase]: 671/1378 cut-off events. [2024-06-21 19:22:04,115 INFO L125 PetriNetUnfolderBase]: For 184361/184361 co-relation queries the response was YES. [2024-06-21 19:22:04,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6374 conditions, 1378 events. 671/1378 cut-off events. For 184361/184361 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8774 event pairs, 154 based on Foata normal form. 8/1380 useless extension candidates. Maximal degree in co-relation 6223. Up to 1040 conditions per place. [2024-06-21 19:22:04,128 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 182 selfloop transitions, 77 changer transitions 9/272 dead transitions. [2024-06-21 19:22:04,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 272 transitions, 2722 flow [2024-06-21 19:22:04,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:22:04,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:22:04,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 169 transitions. [2024-06-21 19:22:04,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4401041666666667 [2024-06-21 19:22:04,129 INFO L175 Difference]: Start difference. First operand has 384 places, 257 transitions, 2128 flow. Second operand 12 states and 169 transitions. [2024-06-21 19:22:04,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 272 transitions, 2722 flow [2024-06-21 19:22:04,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 272 transitions, 2562 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 19:22:04,777 INFO L231 Difference]: Finished difference. Result has 383 places, 254 transitions, 2107 flow [2024-06-21 19:22:04,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2107, PETRI_PLACES=383, PETRI_TRANSITIONS=254} [2024-06-21 19:22:04,777 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 352 predicate places. [2024-06-21 19:22:04,777 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 254 transitions, 2107 flow [2024-06-21 19:22:04,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:04,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:04,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:04,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-21 19:22:04,778 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:04,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:04,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1234394526, now seen corresponding path program 28 times [2024-06-21 19:22:04,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:04,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431678302] [2024-06-21 19:22:04,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:04,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:06,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:06,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:06,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431678302] [2024-06-21 19:22:06,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431678302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:06,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:06,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:22:06,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266275510] [2024-06-21 19:22:06,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:06,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:22:06,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:06,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:22:06,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:22:06,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:22:06,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 254 transitions, 2107 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:06,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:06,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:22:06,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:07,506 INFO L124 PetriNetUnfolderBase]: 644/1325 cut-off events. [2024-06-21 19:22:07,507 INFO L125 PetriNetUnfolderBase]: For 117549/117549 co-relation queries the response was YES. [2024-06-21 19:22:07,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5138 conditions, 1325 events. 644/1325 cut-off events. For 117549/117549 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8433 event pairs, 142 based on Foata normal form. 8/1327 useless extension candidates. Maximal degree in co-relation 4987. Up to 987 conditions per place. [2024-06-21 19:22:07,519 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 176 selfloop transitions, 79 changer transitions 9/268 dead transitions. [2024-06-21 19:22:07,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 268 transitions, 2669 flow [2024-06-21 19:22:07,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:22:07,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:22:07,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 166 transitions. [2024-06-21 19:22:07,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322916666666667 [2024-06-21 19:22:07,520 INFO L175 Difference]: Start difference. First operand has 383 places, 254 transitions, 2107 flow. Second operand 12 states and 166 transitions. [2024-06-21 19:22:07,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 268 transitions, 2669 flow [2024-06-21 19:22:07,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 268 transitions, 2509 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 19:22:07,825 INFO L231 Difference]: Finished difference. Result has 381 places, 250 transitions, 2068 flow [2024-06-21 19:22:07,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1947, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2068, PETRI_PLACES=381, PETRI_TRANSITIONS=250} [2024-06-21 19:22:07,826 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 350 predicate places. [2024-06-21 19:22:07,826 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 250 transitions, 2068 flow [2024-06-21 19:22:07,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:07,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:07,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:07,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-21 19:22:07,826 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:07,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:07,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1155011094, now seen corresponding path program 1 times [2024-06-21 19:22:07,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:07,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703946134] [2024-06-21 19:22:07,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:07,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:09,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:09,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:09,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703946134] [2024-06-21 19:22:09,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703946134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:09,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:09,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:22:09,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041493434] [2024-06-21 19:22:09,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:09,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:22:09,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:09,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:22:09,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:22:10,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:22:10,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 250 transitions, 2068 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:10,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:10,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:22:10,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:10,444 INFO L124 PetriNetUnfolderBase]: 635/1314 cut-off events. [2024-06-21 19:22:10,444 INFO L125 PetriNetUnfolderBase]: For 100016/100016 co-relation queries the response was YES. [2024-06-21 19:22:10,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5049 conditions, 1314 events. 635/1314 cut-off events. For 100016/100016 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 8327 event pairs, 146 based on Foata normal form. 6/1319 useless extension candidates. Maximal degree in co-relation 4899. Up to 1156 conditions per place. [2024-06-21 19:22:10,457 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 221 selfloop transitions, 32 changer transitions 12/269 dead transitions. [2024-06-21 19:22:10,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 269 transitions, 2646 flow [2024-06-21 19:22:10,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:22:10,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:22:10,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 164 transitions. [2024-06-21 19:22:10,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-21 19:22:10,458 INFO L175 Difference]: Start difference. First operand has 381 places, 250 transitions, 2068 flow. Second operand 12 states and 164 transitions. [2024-06-21 19:22:10,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 269 transitions, 2646 flow [2024-06-21 19:22:10,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 269 transitions, 2429 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 19:22:10,684 INFO L231 Difference]: Finished difference. Result has 377 places, 245 transitions, 1897 flow [2024-06-21 19:22:10,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1853, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1897, PETRI_PLACES=377, PETRI_TRANSITIONS=245} [2024-06-21 19:22:10,684 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-21 19:22:10,684 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 245 transitions, 1897 flow [2024-06-21 19:22:10,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:10,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:10,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:10,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-21 19:22:10,685 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:10,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:10,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1208985662, now seen corresponding path program 2 times [2024-06-21 19:22:10,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:10,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376300768] [2024-06-21 19:22:10,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:10,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:12,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:12,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:12,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376300768] [2024-06-21 19:22:12,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376300768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:12,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:12,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:22:12,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436813223] [2024-06-21 19:22:12,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:12,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:22:12,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:12,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:22:12,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:22:12,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:22:12,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 245 transitions, 1897 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:12,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:12,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:22:12,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:13,203 INFO L124 PetriNetUnfolderBase]: 624/1297 cut-off events. [2024-06-21 19:22:13,203 INFO L125 PetriNetUnfolderBase]: For 98292/98292 co-relation queries the response was YES. [2024-06-21 19:22:13,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4789 conditions, 1297 events. 624/1297 cut-off events. For 98292/98292 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 8235 event pairs, 121 based on Foata normal form. 6/1302 useless extension candidates. Maximal degree in co-relation 4641. Up to 978 conditions per place. [2024-06-21 19:22:13,216 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 215 selfloop transitions, 25 changer transitions 23/267 dead transitions. [2024-06-21 19:22:13,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 267 transitions, 2475 flow [2024-06-21 19:22:13,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:22:13,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:22:13,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 169 transitions. [2024-06-21 19:22:13,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4401041666666667 [2024-06-21 19:22:13,217 INFO L175 Difference]: Start difference. First operand has 377 places, 245 transitions, 1897 flow. Second operand 12 states and 169 transitions. [2024-06-21 19:22:13,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 267 transitions, 2475 flow [2024-06-21 19:22:13,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 267 transitions, 2405 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 19:22:13,493 INFO L231 Difference]: Finished difference. Result has 373 places, 232 transitions, 1803 flow [2024-06-21 19:22:13,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1827, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1803, PETRI_PLACES=373, PETRI_TRANSITIONS=232} [2024-06-21 19:22:13,493 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-21 19:22:13,494 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 232 transitions, 1803 flow [2024-06-21 19:22:13,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:13,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:13,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:13,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-21 19:22:13,494 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:13,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:13,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1489915966, now seen corresponding path program 3 times [2024-06-21 19:22:13,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:13,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392749138] [2024-06-21 19:22:13,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:13,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:15,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:15,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:15,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392749138] [2024-06-21 19:22:15,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392749138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:15,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:15,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:22:15,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258685633] [2024-06-21 19:22:15,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:15,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:22:15,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:15,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:22:15,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:22:15,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:22:15,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 232 transitions, 1803 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:15,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:15,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:22:15,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:16,126 INFO L124 PetriNetUnfolderBase]: 578/1211 cut-off events. [2024-06-21 19:22:16,126 INFO L125 PetriNetUnfolderBase]: For 95142/95142 co-relation queries the response was YES. [2024-06-21 19:22:16,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4527 conditions, 1211 events. 578/1211 cut-off events. For 95142/95142 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7603 event pairs, 124 based on Foata normal form. 6/1216 useless extension candidates. Maximal degree in co-relation 4381. Up to 1032 conditions per place. [2024-06-21 19:22:16,137 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 206 selfloop transitions, 23 changer transitions 19/252 dead transitions. [2024-06-21 19:22:16,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 252 transitions, 2347 flow [2024-06-21 19:22:16,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:22:16,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:22:16,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-21 19:22:16,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4244791666666667 [2024-06-21 19:22:16,138 INFO L175 Difference]: Start difference. First operand has 373 places, 232 transitions, 1803 flow. Second operand 12 states and 163 transitions. [2024-06-21 19:22:16,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 252 transitions, 2347 flow [2024-06-21 19:22:16,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 252 transitions, 2265 flow, removed 4 selfloop flow, removed 17 redundant places. [2024-06-21 19:22:16,382 INFO L231 Difference]: Finished difference. Result has 357 places, 222 transitions, 1713 flow [2024-06-21 19:22:16,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1721, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1713, PETRI_PLACES=357, PETRI_TRANSITIONS=222} [2024-06-21 19:22:16,382 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 326 predicate places. [2024-06-21 19:22:16,382 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 222 transitions, 1713 flow [2024-06-21 19:22:16,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:16,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:16,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:16,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-21 19:22:16,382 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:16,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:16,383 INFO L85 PathProgramCache]: Analyzing trace with hash 80133622, now seen corresponding path program 4 times [2024-06-21 19:22:16,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:16,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886494935] [2024-06-21 19:22:16,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:16,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:18,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:18,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:18,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886494935] [2024-06-21 19:22:18,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886494935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:18,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:18,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:22:18,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881159752] [2024-06-21 19:22:18,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:18,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:22:18,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:18,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:22:18,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:22:18,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:22:18,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 222 transitions, 1713 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:18,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:18,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:22:18,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:18,896 INFO L124 PetriNetUnfolderBase]: 553/1164 cut-off events. [2024-06-21 19:22:18,897 INFO L125 PetriNetUnfolderBase]: For 90593/90593 co-relation queries the response was YES. [2024-06-21 19:22:18,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4344 conditions, 1164 events. 553/1164 cut-off events. For 90593/90593 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 7259 event pairs, 113 based on Foata normal form. 6/1169 useless extension candidates. Maximal degree in co-relation 4201. Up to 970 conditions per place. [2024-06-21 19:22:18,908 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 197 selfloop transitions, 14 changer transitions 28/243 dead transitions. [2024-06-21 19:22:18,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 243 transitions, 2241 flow [2024-06-21 19:22:18,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:22:18,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:22:18,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-21 19:22:18,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4244791666666667 [2024-06-21 19:22:18,909 INFO L175 Difference]: Start difference. First operand has 357 places, 222 transitions, 1713 flow. Second operand 12 states and 163 transitions. [2024-06-21 19:22:18,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 243 transitions, 2241 flow [2024-06-21 19:22:19,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 243 transitions, 2183 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-21 19:22:19,166 INFO L231 Difference]: Finished difference. Result has 345 places, 206 transitions, 1572 flow [2024-06-21 19:22:19,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1655, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1572, PETRI_PLACES=345, PETRI_TRANSITIONS=206} [2024-06-21 19:22:19,166 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-21 19:22:19,166 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 206 transitions, 1572 flow [2024-06-21 19:22:19,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:19,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:19,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:19,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-21 19:22:19,167 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:19,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:19,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1382730668, now seen corresponding path program 5 times [2024-06-21 19:22:19,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:19,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722816967] [2024-06-21 19:22:19,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:19,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:21,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:21,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:21,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722816967] [2024-06-21 19:22:21,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722816967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:21,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:21,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:22:21,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39508019] [2024-06-21 19:22:21,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:21,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:22:21,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:21,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:22:21,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:22:21,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:22:21,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 206 transitions, 1572 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:21,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:21,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:22:21,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:21,652 INFO L124 PetriNetUnfolderBase]: 513/1084 cut-off events. [2024-06-21 19:22:21,653 INFO L125 PetriNetUnfolderBase]: For 83338/83338 co-relation queries the response was YES. [2024-06-21 19:22:21,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4039 conditions, 1084 events. 513/1084 cut-off events. For 83338/83338 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6625 event pairs, 74 based on Foata normal form. 6/1089 useless extension candidates. Maximal degree in co-relation 3901. Up to 805 conditions per place. [2024-06-21 19:22:21,662 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 173 selfloop transitions, 7 changer transitions 45/229 dead transitions. [2024-06-21 19:22:21,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 229 transitions, 2076 flow [2024-06-21 19:22:21,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:22:21,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:22:21,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-21 19:22:21,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4244791666666667 [2024-06-21 19:22:21,663 INFO L175 Difference]: Start difference. First operand has 345 places, 206 transitions, 1572 flow. Second operand 12 states and 163 transitions. [2024-06-21 19:22:21,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 229 transitions, 2076 flow [2024-06-21 19:22:21,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 229 transitions, 2012 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-21 19:22:21,830 INFO L231 Difference]: Finished difference. Result has 324 places, 180 transitions, 1347 flow [2024-06-21 19:22:21,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1508, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1347, PETRI_PLACES=324, PETRI_TRANSITIONS=180} [2024-06-21 19:22:21,831 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-21 19:22:21,831 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 180 transitions, 1347 flow [2024-06-21 19:22:21,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:21,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:21,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:21,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-21 19:22:21,831 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:21,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:21,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1622578872, now seen corresponding path program 6 times [2024-06-21 19:22:21,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:21,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752069858] [2024-06-21 19:22:21,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:21,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:23,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:23,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:23,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752069858] [2024-06-21 19:22:23,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752069858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:23,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:23,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:22:23,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095390019] [2024-06-21 19:22:23,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:23,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:22:23,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:23,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:22:23,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:22:23,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:22:23,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 180 transitions, 1347 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:23,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:23,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:22:23,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:24,247 INFO L124 PetriNetUnfolderBase]: 423/892 cut-off events. [2024-06-21 19:22:24,247 INFO L125 PetriNetUnfolderBase]: For 76286/76290 co-relation queries the response was YES. [2024-06-21 19:22:24,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3344 conditions, 892 events. 423/892 cut-off events. For 76286/76290 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5244 event pairs, 63 based on Foata normal form. 10/901 useless extension candidates. Maximal degree in co-relation 3224. Up to 654 conditions per place. [2024-06-21 19:22:24,254 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 146 selfloop transitions, 32 changer transitions 15/197 dead transitions. [2024-06-21 19:22:24,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 197 transitions, 1771 flow [2024-06-21 19:22:24,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:22:24,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:22:24,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 164 transitions. [2024-06-21 19:22:24,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-21 19:22:24,255 INFO L175 Difference]: Start difference. First operand has 324 places, 180 transitions, 1347 flow. Second operand 12 states and 164 transitions. [2024-06-21 19:22:24,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 197 transitions, 1771 flow [2024-06-21 19:22:24,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 197 transitions, 1727 flow, removed 10 selfloop flow, removed 17 redundant places. [2024-06-21 19:22:24,406 INFO L231 Difference]: Finished difference. Result has 289 places, 173 transitions, 1322 flow [2024-06-21 19:22:24,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1303, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1322, PETRI_PLACES=289, PETRI_TRANSITIONS=173} [2024-06-21 19:22:24,406 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 258 predicate places. [2024-06-21 19:22:24,407 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 173 transitions, 1322 flow [2024-06-21 19:22:24,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:24,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:24,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:24,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-21 19:22:24,407 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:24,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:24,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1451876442, now seen corresponding path program 7 times [2024-06-21 19:22:24,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:24,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126453477] [2024-06-21 19:22:24,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:24,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:26,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:26,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:26,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126453477] [2024-06-21 19:22:26,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126453477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:26,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:26,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:22:26,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692946430] [2024-06-21 19:22:26,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:26,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:22:26,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:26,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:22:26,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:22:26,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:22:26,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 173 transitions, 1322 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:26,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:26,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:22:26,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:27,391 INFO L124 PetriNetUnfolderBase]: 399/848 cut-off events. [2024-06-21 19:22:27,391 INFO L125 PetriNetUnfolderBase]: For 64615/64615 co-relation queries the response was YES. [2024-06-21 19:22:27,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3205 conditions, 848 events. 399/848 cut-off events. For 64615/64615 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4913 event pairs, 63 based on Foata normal form. 6/853 useless extension candidates. Maximal degree in co-relation 3095. Up to 650 conditions per place. [2024-06-21 19:22:27,397 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 143 selfloop transitions, 31 changer transitions 11/189 dead transitions. [2024-06-21 19:22:27,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 189 transitions, 1728 flow [2024-06-21 19:22:27,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:22:27,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:22:27,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-21 19:22:27,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-21 19:22:27,398 INFO L175 Difference]: Start difference. First operand has 289 places, 173 transitions, 1322 flow. Second operand 12 states and 149 transitions. [2024-06-21 19:22:27,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 189 transitions, 1728 flow [2024-06-21 19:22:27,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 189 transitions, 1652 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-21 19:22:27,537 INFO L231 Difference]: Finished difference. Result has 281 places, 168 transitions, 1283 flow [2024-06-21 19:22:27,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1283, PETRI_PLACES=281, PETRI_TRANSITIONS=168} [2024-06-21 19:22:27,538 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-21 19:22:27,538 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 168 transitions, 1283 flow [2024-06-21 19:22:27,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:27,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:27,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:27,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-21 19:22:27,538 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:27,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:27,539 INFO L85 PathProgramCache]: Analyzing trace with hash -781237594, now seen corresponding path program 8 times [2024-06-21 19:22:27,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:27,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379725389] [2024-06-21 19:22:27,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:27,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:29,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:29,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:29,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379725389] [2024-06-21 19:22:29,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379725389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:29,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:29,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:22:29,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127047604] [2024-06-21 19:22:29,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:29,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:22:29,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:29,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:22:29,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:22:30,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:22:30,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 168 transitions, 1283 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:30,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:30,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:22:30,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:30,395 INFO L124 PetriNetUnfolderBase]: 383/820 cut-off events. [2024-06-21 19:22:30,395 INFO L125 PetriNetUnfolderBase]: For 60931/60931 co-relation queries the response was YES. [2024-06-21 19:22:30,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3096 conditions, 820 events. 383/820 cut-off events. For 60931/60931 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4715 event pairs, 61 based on Foata normal form. 6/825 useless extension candidates. Maximal degree in co-relation 2989. Up to 645 conditions per place. [2024-06-21 19:22:30,400 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 143 selfloop transitions, 26 changer transitions 11/184 dead transitions. [2024-06-21 19:22:30,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 184 transitions, 1679 flow [2024-06-21 19:22:30,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:22:30,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:22:30,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-21 19:22:30,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 19:22:30,401 INFO L175 Difference]: Start difference. First operand has 281 places, 168 transitions, 1283 flow. Second operand 12 states and 160 transitions. [2024-06-21 19:22:30,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 184 transitions, 1679 flow [2024-06-21 19:22:30,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 184 transitions, 1609 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-21 19:22:30,518 INFO L231 Difference]: Finished difference. Result has 275 places, 163 transitions, 1234 flow [2024-06-21 19:22:30,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1234, PETRI_PLACES=275, PETRI_TRANSITIONS=163} [2024-06-21 19:22:30,518 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 244 predicate places. [2024-06-21 19:22:30,519 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 163 transitions, 1234 flow [2024-06-21 19:22:30,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:30,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:30,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:30,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-21 19:22:30,519 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:30,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:30,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1617342596, now seen corresponding path program 9 times [2024-06-21 19:22:30,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:30,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761466780] [2024-06-21 19:22:30,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:30,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:32,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:32,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:32,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761466780] [2024-06-21 19:22:32,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761466780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:32,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:32,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:22:32,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546731305] [2024-06-21 19:22:32,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:32,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:22:32,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:32,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:22:32,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:22:32,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:22:32,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 163 transitions, 1234 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:32,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:32,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:22:32,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:33,197 INFO L124 PetriNetUnfolderBase]: 367/792 cut-off events. [2024-06-21 19:22:33,197 INFO L125 PetriNetUnfolderBase]: For 57307/57309 co-relation queries the response was YES. [2024-06-21 19:22:33,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2981 conditions, 792 events. 367/792 cut-off events. For 57307/57309 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4534 event pairs, 61 based on Foata normal form. 8/799 useless extension candidates. Maximal degree in co-relation 2877. Up to 618 conditions per place. [2024-06-21 19:22:33,204 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 134 selfloop transitions, 23 changer transitions 17/178 dead transitions. [2024-06-21 19:22:33,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 178 transitions, 1616 flow [2024-06-21 19:22:33,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:22:33,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:22:33,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-21 19:22:33,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114583333333333 [2024-06-21 19:22:33,205 INFO L175 Difference]: Start difference. First operand has 275 places, 163 transitions, 1234 flow. Second operand 12 states and 158 transitions. [2024-06-21 19:22:33,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 178 transitions, 1616 flow [2024-06-21 19:22:33,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 178 transitions, 1556 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-21 19:22:33,327 INFO L231 Difference]: Finished difference. Result has 269 places, 155 transitions, 1173 flow [2024-06-21 19:22:33,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1173, PETRI_PLACES=269, PETRI_TRANSITIONS=155} [2024-06-21 19:22:33,327 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-21 19:22:33,327 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 155 transitions, 1173 flow [2024-06-21 19:22:33,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:33,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:33,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:33,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-21 19:22:33,328 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:33,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:33,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1084263340, now seen corresponding path program 10 times [2024-06-21 19:22:33,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:33,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825403651] [2024-06-21 19:22:33,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:33,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:35,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:35,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:35,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825403651] [2024-06-21 19:22:35,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825403651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:35,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:35,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:22:35,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796178032] [2024-06-21 19:22:35,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:35,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:22:35,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:35,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:22:35,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:22:35,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:22:35,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 155 transitions, 1173 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:35,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:35,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:22:35,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:35,671 INFO L124 PetriNetUnfolderBase]: 354/765 cut-off events. [2024-06-21 19:22:35,671 INFO L125 PetriNetUnfolderBase]: For 53887/53887 co-relation queries the response was YES. [2024-06-21 19:22:35,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2870 conditions, 765 events. 354/765 cut-off events. For 53887/53887 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4344 event pairs, 42 based on Foata normal form. 6/770 useless extension candidates. Maximal degree in co-relation 2769. Up to 476 conditions per place. [2024-06-21 19:22:35,677 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 124 selfloop transitions, 24 changer transitions 21/173 dead transitions. [2024-06-21 19:22:35,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 173 transitions, 1551 flow [2024-06-21 19:22:35,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:22:35,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:22:35,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-21 19:22:35,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4244791666666667 [2024-06-21 19:22:35,678 INFO L175 Difference]: Start difference. First operand has 269 places, 155 transitions, 1173 flow. Second operand 12 states and 163 transitions. [2024-06-21 19:22:35,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 173 transitions, 1551 flow [2024-06-21 19:22:35,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 173 transitions, 1479 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-21 19:22:35,783 INFO L231 Difference]: Finished difference. Result has 257 places, 144 transitions, 1088 flow [2024-06-21 19:22:35,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1088, PETRI_PLACES=257, PETRI_TRANSITIONS=144} [2024-06-21 19:22:35,784 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-21 19:22:35,784 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 144 transitions, 1088 flow [2024-06-21 19:22:35,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:35,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:35,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:35,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-21 19:22:35,785 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:35,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:35,785 INFO L85 PathProgramCache]: Analyzing trace with hash -556897772, now seen corresponding path program 11 times [2024-06-21 19:22:35,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:35,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899923695] [2024-06-21 19:22:35,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:35,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:37,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:37,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:37,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899923695] [2024-06-21 19:22:37,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899923695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:37,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:37,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:22:37,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013050348] [2024-06-21 19:22:37,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:37,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:22:37,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:37,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:22:37,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:22:37,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:22:37,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 144 transitions, 1088 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:37,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:37,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:22:37,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:38,417 INFO L124 PetriNetUnfolderBase]: 320/695 cut-off events. [2024-06-21 19:22:38,417 INFO L125 PetriNetUnfolderBase]: For 49333/49333 co-relation queries the response was YES. [2024-06-21 19:22:38,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2658 conditions, 695 events. 320/695 cut-off events. For 49333/49333 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3833 event pairs, 51 based on Foata normal form. 6/700 useless extension candidates. Maximal degree in co-relation 2561. Up to 548 conditions per place. [2024-06-21 19:22:38,423 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 121 selfloop transitions, 20 changer transitions 14/159 dead transitions. [2024-06-21 19:22:38,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 159 transitions, 1432 flow [2024-06-21 19:22:38,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:22:38,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:22:38,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-21 19:22:38,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 19:22:38,424 INFO L175 Difference]: Start difference. First operand has 257 places, 144 transitions, 1088 flow. Second operand 12 states and 156 transitions. [2024-06-21 19:22:38,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 159 transitions, 1432 flow [2024-06-21 19:22:38,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 159 transitions, 1336 flow, removed 4 selfloop flow, removed 21 redundant places. [2024-06-21 19:22:38,506 INFO L231 Difference]: Finished difference. Result has 239 places, 138 transitions, 1005 flow [2024-06-21 19:22:38,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1005, PETRI_PLACES=239, PETRI_TRANSITIONS=138} [2024-06-21 19:22:38,506 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-21 19:22:38,506 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 138 transitions, 1005 flow [2024-06-21 19:22:38,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:38,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:38,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:38,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-21 19:22:38,506 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:38,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:38,507 INFO L85 PathProgramCache]: Analyzing trace with hash 132243946, now seen corresponding path program 12 times [2024-06-21 19:22:38,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:38,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349640231] [2024-06-21 19:22:38,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:38,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:40,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:40,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:40,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349640231] [2024-06-21 19:22:40,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349640231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:40,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:40,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:22:40,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821722072] [2024-06-21 19:22:40,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:40,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:22:40,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:40,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:22:40,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:22:40,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:22:40,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 138 transitions, 1005 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:40,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:40,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:22:40,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:40,790 INFO L124 PetriNetUnfolderBase]: 309/674 cut-off events. [2024-06-21 19:22:40,791 INFO L125 PetriNetUnfolderBase]: For 46098/46098 co-relation queries the response was YES. [2024-06-21 19:22:40,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2529 conditions, 674 events. 309/674 cut-off events. For 46098/46098 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3693 event pairs, 43 based on Foata normal form. 6/679 useless extension candidates. Maximal degree in co-relation 2435. Up to 468 conditions per place. [2024-06-21 19:22:40,795 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 115 selfloop transitions, 19 changer transitions 17/155 dead transitions. [2024-06-21 19:22:40,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 155 transitions, 1345 flow [2024-06-21 19:22:40,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:22:40,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:22:40,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-21 19:22:40,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-21 19:22:40,796 INFO L175 Difference]: Start difference. First operand has 239 places, 138 transitions, 1005 flow. Second operand 12 states and 159 transitions. [2024-06-21 19:22:40,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 155 transitions, 1345 flow [2024-06-21 19:22:40,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 155 transitions, 1295 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-21 19:22:40,869 INFO L231 Difference]: Finished difference. Result has 231 places, 129 transitions, 946 flow [2024-06-21 19:22:40,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=946, PETRI_PLACES=231, PETRI_TRANSITIONS=129} [2024-06-21 19:22:40,870 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-21 19:22:40,870 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 129 transitions, 946 flow [2024-06-21 19:22:40,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:40,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:40,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:40,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-21 19:22:40,870 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:40,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:40,870 INFO L85 PathProgramCache]: Analyzing trace with hash -2046792376, now seen corresponding path program 13 times [2024-06-21 19:22:40,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:40,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597441653] [2024-06-21 19:22:40,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:40,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:42,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:42,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:42,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597441653] [2024-06-21 19:22:42,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597441653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:42,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:42,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:22:42,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985093926] [2024-06-21 19:22:42,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:42,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:22:42,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:42,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:22:42,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:22:43,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:22:43,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 129 transitions, 946 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:43,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:43,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:22:43,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:43,426 INFO L124 PetriNetUnfolderBase]: 283/620 cut-off events. [2024-06-21 19:22:43,426 INFO L125 PetriNetUnfolderBase]: For 41881/41881 co-relation queries the response was YES. [2024-06-21 19:22:43,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2365 conditions, 620 events. 283/620 cut-off events. For 41881/41881 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3313 event pairs, 45 based on Foata normal form. 6/625 useless extension candidates. Maximal degree in co-relation 2275. Up to 494 conditions per place. [2024-06-21 19:22:43,431 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 112 selfloop transitions, 16 changer transitions 12/144 dead transitions. [2024-06-21 19:22:43,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 144 transitions, 1260 flow [2024-06-21 19:22:43,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:22:43,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:22:43,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-21 19:22:43,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036458333333333 [2024-06-21 19:22:43,432 INFO L175 Difference]: Start difference. First operand has 231 places, 129 transitions, 946 flow. Second operand 12 states and 155 transitions. [2024-06-21 19:22:43,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 144 transitions, 1260 flow [2024-06-21 19:22:43,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 144 transitions, 1206 flow, removed 8 selfloop flow, removed 16 redundant places. [2024-06-21 19:22:43,503 INFO L231 Difference]: Finished difference. Result has 217 places, 124 transitions, 903 flow [2024-06-21 19:22:43,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=903, PETRI_PLACES=217, PETRI_TRANSITIONS=124} [2024-06-21 19:22:43,504 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 186 predicate places. [2024-06-21 19:22:43,504 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 124 transitions, 903 flow [2024-06-21 19:22:43,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:43,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:43,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:43,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-21 19:22:43,504 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:43,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:43,504 INFO L85 PathProgramCache]: Analyzing trace with hash 2020273770, now seen corresponding path program 14 times [2024-06-21 19:22:43,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:43,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386107004] [2024-06-21 19:22:43,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:43,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:45,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:45,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:45,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386107004] [2024-06-21 19:22:45,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386107004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:45,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:45,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:22:45,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686719235] [2024-06-21 19:22:45,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:45,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:22:45,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:45,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:22:45,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:22:45,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:22:45,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 124 transitions, 903 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:45,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:45,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:22:45,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:45,974 INFO L124 PetriNetUnfolderBase]: 273/600 cut-off events. [2024-06-21 19:22:45,974 INFO L125 PetriNetUnfolderBase]: For 35187/35187 co-relation queries the response was YES. [2024-06-21 19:22:45,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2250 conditions, 600 events. 273/600 cut-off events. For 35187/35187 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3171 event pairs, 45 based on Foata normal form. 6/605 useless extension candidates. Maximal degree in co-relation 2167. Up to 484 conditions per place. [2024-06-21 19:22:45,978 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 109 selfloop transitions, 15 changer transitions 11/139 dead transitions. [2024-06-21 19:22:45,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 139 transitions, 1207 flow [2024-06-21 19:22:45,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:22:45,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:22:45,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-21 19:22:45,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-21 19:22:45,979 INFO L175 Difference]: Start difference. First operand has 217 places, 124 transitions, 903 flow. Second operand 12 states and 153 transitions. [2024-06-21 19:22:45,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 139 transitions, 1207 flow [2024-06-21 19:22:46,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 139 transitions, 1167 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 19:22:46,039 INFO L231 Difference]: Finished difference. Result has 211 places, 120 transitions, 878 flow [2024-06-21 19:22:46,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=878, PETRI_PLACES=211, PETRI_TRANSITIONS=120} [2024-06-21 19:22:46,039 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-21 19:22:46,039 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 120 transitions, 878 flow [2024-06-21 19:22:46,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:46,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:46,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:46,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-21 19:22:46,040 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:46,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:46,040 INFO L85 PathProgramCache]: Analyzing trace with hash 921162836, now seen corresponding path program 15 times [2024-06-21 19:22:46,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:46,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861654867] [2024-06-21 19:22:46,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:46,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:48,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:48,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:48,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861654867] [2024-06-21 19:22:48,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861654867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:48,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:48,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:22:48,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616218871] [2024-06-21 19:22:48,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:48,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:22:48,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:48,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:22:48,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:22:48,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:22:48,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 120 transitions, 878 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:48,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:48,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:22:48,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:49,016 INFO L124 PetriNetUnfolderBase]: 264/585 cut-off events. [2024-06-21 19:22:49,016 INFO L125 PetriNetUnfolderBase]: For 32505/32505 co-relation queries the response was YES. [2024-06-21 19:22:49,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2185 conditions, 585 events. 264/585 cut-off events. For 32505/32505 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3062 event pairs, 43 based on Foata normal form. 6/590 useless extension candidates. Maximal degree in co-relation 2105. Up to 456 conditions per place. [2024-06-21 19:22:49,020 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 99 selfloop transitions, 2 changer transitions 31/136 dead transitions. [2024-06-21 19:22:49,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 136 transitions, 1178 flow [2024-06-21 19:22:49,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:22:49,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:22:49,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 19:22:49,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 19:22:49,021 INFO L175 Difference]: Start difference. First operand has 211 places, 120 transitions, 878 flow. Second operand 11 states and 144 transitions. [2024-06-21 19:22:49,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 136 transitions, 1178 flow [2024-06-21 19:22:49,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 136 transitions, 1142 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 19:22:49,065 INFO L231 Difference]: Finished difference. Result has 206 places, 104 transitions, 749 flow [2024-06-21 19:22:49,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=749, PETRI_PLACES=206, PETRI_TRANSITIONS=104} [2024-06-21 19:22:49,066 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-21 19:22:49,066 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 104 transitions, 749 flow [2024-06-21 19:22:49,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:49,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:49,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:49,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-21 19:22:49,066 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:49,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:49,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1369474650, now seen corresponding path program 16 times [2024-06-21 19:22:49,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:49,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638874900] [2024-06-21 19:22:49,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:49,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:51,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:51,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:51,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638874900] [2024-06-21 19:22:51,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638874900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:51,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:51,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:22:51,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139750844] [2024-06-21 19:22:51,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:51,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:22:51,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:51,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:22:51,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:22:51,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:22:51,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 104 transitions, 749 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:51,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:51,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:22:51,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:51,532 INFO L124 PetriNetUnfolderBase]: 237/512 cut-off events. [2024-06-21 19:22:51,532 INFO L125 PetriNetUnfolderBase]: For 30708/30708 co-relation queries the response was YES. [2024-06-21 19:22:51,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1931 conditions, 512 events. 237/512 cut-off events. For 30708/30708 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2611 event pairs, 43 based on Foata normal form. 6/517 useless extension candidates. Maximal degree in co-relation 1853. Up to 344 conditions per place. [2024-06-21 19:22:51,536 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 68 selfloop transitions, 34 changer transitions 11/117 dead transitions. [2024-06-21 19:22:51,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 117 transitions, 1003 flow [2024-06-21 19:22:51,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:22:51,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:22:51,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-21 19:22:51,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088541666666667 [2024-06-21 19:22:51,536 INFO L175 Difference]: Start difference. First operand has 206 places, 104 transitions, 749 flow. Second operand 12 states and 157 transitions. [2024-06-21 19:22:51,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 117 transitions, 1003 flow [2024-06-21 19:22:51,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 117 transitions, 973 flow, removed 11 selfloop flow, removed 15 redundant places. [2024-06-21 19:22:51,576 INFO L231 Difference]: Finished difference. Result has 181 places, 100 transitions, 770 flow [2024-06-21 19:22:51,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=770, PETRI_PLACES=181, PETRI_TRANSITIONS=100} [2024-06-21 19:22:51,577 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-21 19:22:51,577 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 100 transitions, 770 flow [2024-06-21 19:22:51,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:51,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:51,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:51,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-21 19:22:51,577 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:51,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:51,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1597375800, now seen corresponding path program 17 times [2024-06-21 19:22:51,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:51,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909245262] [2024-06-21 19:22:51,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:51,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:53,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:53,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:53,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909245262] [2024-06-21 19:22:53,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909245262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:53,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:53,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:22:53,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363614867] [2024-06-21 19:22:53,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:53,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:22:53,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:53,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:22:53,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:22:53,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:22:53,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 100 transitions, 770 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:53,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:53,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:22:53,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:54,119 INFO L124 PetriNetUnfolderBase]: 229/494 cut-off events. [2024-06-21 19:22:54,119 INFO L125 PetriNetUnfolderBase]: For 22938/22938 co-relation queries the response was YES. [2024-06-21 19:22:54,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1874 conditions, 494 events. 229/494 cut-off events. For 22938/22938 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2455 event pairs, 43 based on Foata normal form. 6/499 useless extension candidates. Maximal degree in co-relation 1806. Up to 334 conditions per place. [2024-06-21 19:22:54,122 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 68 selfloop transitions, 31 changer transitions 10/113 dead transitions. [2024-06-21 19:22:54,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 113 transitions, 1016 flow [2024-06-21 19:22:54,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:22:54,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:22:54,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-21 19:22:54,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088541666666667 [2024-06-21 19:22:54,123 INFO L175 Difference]: Start difference. First operand has 181 places, 100 transitions, 770 flow. Second operand 12 states and 157 transitions. [2024-06-21 19:22:54,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 113 transitions, 1016 flow [2024-06-21 19:22:54,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 113 transitions, 940 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 19:22:54,154 INFO L231 Difference]: Finished difference. Result has 175 places, 97 transitions, 743 flow [2024-06-21 19:22:54,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=743, PETRI_PLACES=175, PETRI_TRANSITIONS=97} [2024-06-21 19:22:54,154 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 144 predicate places. [2024-06-21 19:22:54,154 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 97 transitions, 743 flow [2024-06-21 19:22:54,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:54,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:54,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:54,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-21 19:22:54,155 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:54,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:54,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1916444036, now seen corresponding path program 18 times [2024-06-21 19:22:54,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:54,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782041236] [2024-06-21 19:22:54,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:54,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:56,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:56,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:56,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782041236] [2024-06-21 19:22:56,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782041236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:56,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:56,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:22:56,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443654095] [2024-06-21 19:22:56,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:56,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:22:56,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:56,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:22:56,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:22:56,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:22:56,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 97 transitions, 743 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:56,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:56,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:22:56,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:56,616 INFO L124 PetriNetUnfolderBase]: 222/481 cut-off events. [2024-06-21 19:22:56,617 INFO L125 PetriNetUnfolderBase]: For 20806/20806 co-relation queries the response was YES. [2024-06-21 19:22:56,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1811 conditions, 481 events. 222/481 cut-off events. For 20806/20806 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2388 event pairs, 43 based on Foata normal form. 6/486 useless extension candidates. Maximal degree in co-relation 1746. Up to 324 conditions per place. [2024-06-21 19:22:56,619 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 63 selfloop transitions, 32 changer transitions 11/110 dead transitions. [2024-06-21 19:22:56,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 110 transitions, 983 flow [2024-06-21 19:22:56,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:22:56,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:22:56,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-21 19:22:56,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088541666666667 [2024-06-21 19:22:56,620 INFO L175 Difference]: Start difference. First operand has 175 places, 97 transitions, 743 flow. Second operand 12 states and 157 transitions. [2024-06-21 19:22:56,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 110 transitions, 983 flow [2024-06-21 19:22:56,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 110 transitions, 915 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 19:22:56,653 INFO L231 Difference]: Finished difference. Result has 171 places, 93 transitions, 718 flow [2024-06-21 19:22:56,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=718, PETRI_PLACES=171, PETRI_TRANSITIONS=93} [2024-06-21 19:22:56,654 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 140 predicate places. [2024-06-21 19:22:56,654 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 93 transitions, 718 flow [2024-06-21 19:22:56,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:56,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:56,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:56,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-21 19:22:56,655 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:56,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:56,655 INFO L85 PathProgramCache]: Analyzing trace with hash 986693192, now seen corresponding path program 19 times [2024-06-21 19:22:56,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:56,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593224145] [2024-06-21 19:22:56,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:56,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:22:58,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:22:58,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:22:58,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593224145] [2024-06-21 19:22:58,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593224145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:22:58,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:22:58,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:22:58,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231921668] [2024-06-21 19:22:58,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:22:58,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:22:58,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:22:58,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:22:58,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:22:58,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:22:58,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 93 transitions, 718 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:58,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:22:58,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:22:58,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:22:59,435 INFO L124 PetriNetUnfolderBase]: 214/463 cut-off events. [2024-06-21 19:22:59,435 INFO L125 PetriNetUnfolderBase]: For 19436/19436 co-relation queries the response was YES. [2024-06-21 19:22:59,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1751 conditions, 463 events. 214/463 cut-off events. For 19436/19436 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2258 event pairs, 43 based on Foata normal form. 6/468 useless extension candidates. Maximal degree in co-relation 1688. Up to 314 conditions per place. [2024-06-21 19:22:59,438 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 65 selfloop transitions, 27 changer transitions 10/106 dead transitions. [2024-06-21 19:22:59,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 106 transitions, 950 flow [2024-06-21 19:22:59,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:22:59,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:22:59,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-21 19:22:59,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-21 19:22:59,439 INFO L175 Difference]: Start difference. First operand has 171 places, 93 transitions, 718 flow. Second operand 11 states and 148 transitions. [2024-06-21 19:22:59,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 106 transitions, 950 flow [2024-06-21 19:22:59,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 106 transitions, 878 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 19:22:59,465 INFO L231 Difference]: Finished difference. Result has 164 places, 90 transitions, 688 flow [2024-06-21 19:22:59,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=688, PETRI_PLACES=164, PETRI_TRANSITIONS=90} [2024-06-21 19:22:59,465 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-06-21 19:22:59,466 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 90 transitions, 688 flow [2024-06-21 19:22:59,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:22:59,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:22:59,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:22:59,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-21 19:22:59,466 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:22:59,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:22:59,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1731980512, now seen corresponding path program 20 times [2024-06-21 19:22:59,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:22:59,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708392784] [2024-06-21 19:22:59,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:22:59,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:22:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:23:01,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:23:01,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:23:01,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708392784] [2024-06-21 19:23:01,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708392784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:23:01,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:23:01,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:23:01,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764503667] [2024-06-21 19:23:01,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:23:01,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:23:01,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:23:01,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:23:01,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:23:01,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:23:01,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 90 transitions, 688 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:01,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:23:01,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:23:01,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:23:01,959 INFO L124 PetriNetUnfolderBase]: 207/450 cut-off events. [2024-06-21 19:23:01,960 INFO L125 PetriNetUnfolderBase]: For 17464/17464 co-relation queries the response was YES. [2024-06-21 19:23:01,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1685 conditions, 450 events. 207/450 cut-off events. For 17464/17464 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2157 event pairs, 41 based on Foata normal form. 6/455 useless extension candidates. Maximal degree in co-relation 1625. Up to 296 conditions per place. [2024-06-21 19:23:01,962 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 61 selfloop transitions, 26 changer transitions 13/104 dead transitions. [2024-06-21 19:23:01,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 104 transitions, 918 flow [2024-06-21 19:23:01,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:23:01,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:23:01,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-21 19:23:01,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088541666666667 [2024-06-21 19:23:01,963 INFO L175 Difference]: Start difference. First operand has 164 places, 90 transitions, 688 flow. Second operand 12 states and 157 transitions. [2024-06-21 19:23:01,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 104 transitions, 918 flow [2024-06-21 19:23:01,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 104 transitions, 858 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 19:23:01,988 INFO L231 Difference]: Finished difference. Result has 161 places, 86 transitions, 656 flow [2024-06-21 19:23:01,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=656, PETRI_PLACES=161, PETRI_TRANSITIONS=86} [2024-06-21 19:23:01,988 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 130 predicate places. [2024-06-21 19:23:01,988 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 86 transitions, 656 flow [2024-06-21 19:23:01,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:01,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:23:01,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:23:01,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-21 19:23:01,989 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:23:01,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:23:01,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1875022616, now seen corresponding path program 21 times [2024-06-21 19:23:01,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:23:01,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443239701] [2024-06-21 19:23:01,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:23:01,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:23:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:23:04,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:23:04,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:23:04,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443239701] [2024-06-21 19:23:04,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443239701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:23:04,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:23:04,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:23:04,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355504672] [2024-06-21 19:23:04,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:23:04,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:23:04,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:23:04,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:23:04,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:23:04,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:23:04,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 86 transitions, 656 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:04,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:23:04,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:23:04,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:23:04,778 INFO L124 PetriNetUnfolderBase]: 196/429 cut-off events. [2024-06-21 19:23:04,778 INFO L125 PetriNetUnfolderBase]: For 16267/16271 co-relation queries the response was YES. [2024-06-21 19:23:04,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1608 conditions, 429 events. 196/429 cut-off events. For 16267/16271 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2042 event pairs, 35 based on Foata normal form. 10/438 useless extension candidates. Maximal degree in co-relation 1550. Up to 256 conditions per place. [2024-06-21 19:23:04,781 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 59 selfloop transitions, 25 changer transitions 13/101 dead transitions. [2024-06-21 19:23:04,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 101 transitions, 882 flow [2024-06-21 19:23:04,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:23:04,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:23:04,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-21 19:23:04,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-21 19:23:04,782 INFO L175 Difference]: Start difference. First operand has 161 places, 86 transitions, 656 flow. Second operand 12 states and 159 transitions. [2024-06-21 19:23:04,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 101 transitions, 882 flow [2024-06-21 19:23:04,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 101 transitions, 822 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 19:23:04,803 INFO L231 Difference]: Finished difference. Result has 155 places, 81 transitions, 612 flow [2024-06-21 19:23:04,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=612, PETRI_PLACES=155, PETRI_TRANSITIONS=81} [2024-06-21 19:23:04,803 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 124 predicate places. [2024-06-21 19:23:04,804 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 81 transitions, 612 flow [2024-06-21 19:23:04,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:04,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:23:04,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:23:04,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-21 19:23:04,804 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:23:04,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:23:04,804 INFO L85 PathProgramCache]: Analyzing trace with hash 152011108, now seen corresponding path program 22 times [2024-06-21 19:23:04,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:23:04,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88860537] [2024-06-21 19:23:04,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:23:04,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:23:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:23:06,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:23:06,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:23:06,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88860537] [2024-06-21 19:23:06,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88860537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:23:06,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:23:06,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:23:06,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181876085] [2024-06-21 19:23:06,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:23:06,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:23:06,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:23:06,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:23:06,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:23:07,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:23:07,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 81 transitions, 612 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:07,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:23:07,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:23:07,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:23:07,574 INFO L124 PetriNetUnfolderBase]: 181/398 cut-off events. [2024-06-21 19:23:07,574 INFO L125 PetriNetUnfolderBase]: For 14334/14334 co-relation queries the response was YES. [2024-06-21 19:23:07,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1499 conditions, 398 events. 181/398 cut-off events. For 14334/14334 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1829 event pairs, 35 based on Foata normal form. 6/403 useless extension candidates. Maximal degree in co-relation 1444. Up to 252 conditions per place. [2024-06-21 19:23:07,576 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 55 selfloop transitions, 21 changer transitions 15/95 dead transitions. [2024-06-21 19:23:07,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 95 transitions, 824 flow [2024-06-21 19:23:07,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:23:07,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:23:07,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 19:23:07,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-21 19:23:07,577 INFO L175 Difference]: Start difference. First operand has 155 places, 81 transitions, 612 flow. Second operand 11 states and 147 transitions. [2024-06-21 19:23:07,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 95 transitions, 824 flow [2024-06-21 19:23:07,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 95 transitions, 759 flow, removed 3 selfloop flow, removed 14 redundant places. [2024-06-21 19:23:07,596 INFO L231 Difference]: Finished difference. Result has 147 places, 75 transitions, 551 flow [2024-06-21 19:23:07,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=551, PETRI_PLACES=147, PETRI_TRANSITIONS=75} [2024-06-21 19:23:07,597 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-21 19:23:07,597 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 75 transitions, 551 flow [2024-06-21 19:23:07,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:07,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:23:07,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:23:07,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-21 19:23:07,597 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:23:07,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:23:07,597 INFO L85 PathProgramCache]: Analyzing trace with hash -26716310, now seen corresponding path program 23 times [2024-06-21 19:23:07,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:23:07,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980124054] [2024-06-21 19:23:07,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:23:07,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:23:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:23:09,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:23:09,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:23:09,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980124054] [2024-06-21 19:23:09,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980124054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:23:09,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:23:09,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:23:09,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793809182] [2024-06-21 19:23:09,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:23:09,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:23:09,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:23:09,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:23:09,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:23:09,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:23:09,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 75 transitions, 551 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:09,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:23:09,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:23:09,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:23:10,108 INFO L124 PetriNetUnfolderBase]: 168/369 cut-off events. [2024-06-21 19:23:10,108 INFO L125 PetriNetUnfolderBase]: For 13198/13198 co-relation queries the response was YES. [2024-06-21 19:23:10,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1384 conditions, 369 events. 168/369 cut-off events. For 13198/13198 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1651 event pairs, 29 based on Foata normal form. 6/374 useless extension candidates. Maximal degree in co-relation 1331. Up to 206 conditions per place. [2024-06-21 19:23:10,110 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 46 selfloop transitions, 28 changer transitions 12/90 dead transitions. [2024-06-21 19:23:10,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 90 transitions, 755 flow [2024-06-21 19:23:10,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:23:10,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:23:10,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-21 19:23:10,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-21 19:23:10,111 INFO L175 Difference]: Start difference. First operand has 147 places, 75 transitions, 551 flow. Second operand 12 states and 159 transitions. [2024-06-21 19:23:10,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 90 transitions, 755 flow [2024-06-21 19:23:10,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 90 transitions, 682 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-21 19:23:10,126 INFO L231 Difference]: Finished difference. Result has 137 places, 71 transitions, 512 flow [2024-06-21 19:23:10,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=512, PETRI_PLACES=137, PETRI_TRANSITIONS=71} [2024-06-21 19:23:10,127 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 106 predicate places. [2024-06-21 19:23:10,127 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 71 transitions, 512 flow [2024-06-21 19:23:10,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:10,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:23:10,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:23:10,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-21 19:23:10,127 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:23:10,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:23:10,128 INFO L85 PathProgramCache]: Analyzing trace with hash -22074680, now seen corresponding path program 24 times [2024-06-21 19:23:10,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:23:10,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288927446] [2024-06-21 19:23:10,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:23:10,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:23:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:23:12,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:23:12,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:23:12,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288927446] [2024-06-21 19:23:12,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288927446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:23:12,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:23:12,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:23:12,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430648442] [2024-06-21 19:23:12,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:23:12,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:23:12,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:23:12,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:23:12,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:23:12,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:23:12,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 71 transitions, 512 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:12,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:23:12,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:23:12,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:23:12,655 INFO L124 PetriNetUnfolderBase]: 154/343 cut-off events. [2024-06-21 19:23:12,655 INFO L125 PetriNetUnfolderBase]: For 10950/10950 co-relation queries the response was YES. [2024-06-21 19:23:12,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 343 events. 154/343 cut-off events. For 10950/10950 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1486 event pairs, 31 based on Foata normal form. 6/348 useless extension candidates. Maximal degree in co-relation 1240. Up to 216 conditions per place. [2024-06-21 19:23:12,657 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 44 selfloop transitions, 26 changer transitions 10/84 dead transitions. [2024-06-21 19:23:12,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 84 transitions, 700 flow [2024-06-21 19:23:12,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:23:12,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:23:12,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-21 19:23:12,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-21 19:23:12,658 INFO L175 Difference]: Start difference. First operand has 137 places, 71 transitions, 512 flow. Second operand 12 states and 154 transitions. [2024-06-21 19:23:12,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 84 transitions, 700 flow [2024-06-21 19:23:12,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 84 transitions, 636 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-21 19:23:12,669 INFO L231 Difference]: Finished difference. Result has 132 places, 68 transitions, 489 flow [2024-06-21 19:23:12,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=489, PETRI_PLACES=132, PETRI_TRANSITIONS=68} [2024-06-21 19:23:12,669 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-21 19:23:12,670 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 68 transitions, 489 flow [2024-06-21 19:23:12,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:12,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:23:12,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:23:12,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-21 19:23:12,670 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:23:12,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:23:12,670 INFO L85 PathProgramCache]: Analyzing trace with hash -22247660, now seen corresponding path program 25 times [2024-06-21 19:23:12,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:23:12,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164896086] [2024-06-21 19:23:12,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:23:12,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:23:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:23:14,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:23:14,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:23:14,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164896086] [2024-06-21 19:23:14,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164896086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:23:14,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:23:14,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:23:14,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678396842] [2024-06-21 19:23:14,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:23:14,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:23:14,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:23:14,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:23:14,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:23:14,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:23:14,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 68 transitions, 489 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:14,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:23:14,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:23:14,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:23:15,313 INFO L124 PetriNetUnfolderBase]: 147/330 cut-off events. [2024-06-21 19:23:15,313 INFO L125 PetriNetUnfolderBase]: For 9952/9952 co-relation queries the response was YES. [2024-06-21 19:23:15,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1229 conditions, 330 events. 147/330 cut-off events. For 9952/9952 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1412 event pairs, 29 based on Foata normal form. 6/335 useless extension candidates. Maximal degree in co-relation 1182. Up to 198 conditions per place. [2024-06-21 19:23:15,315 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 40 selfloop transitions, 23 changer transitions 15/82 dead transitions. [2024-06-21 19:23:15,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 82 transitions, 675 flow [2024-06-21 19:23:15,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:23:15,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:23:15,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-21 19:23:15,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-21 19:23:15,316 INFO L175 Difference]: Start difference. First operand has 132 places, 68 transitions, 489 flow. Second operand 12 states and 154 transitions. [2024-06-21 19:23:15,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 82 transitions, 675 flow [2024-06-21 19:23:15,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 82 transitions, 617 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 19:23:15,326 INFO L231 Difference]: Finished difference. Result has 128 places, 63 transitions, 451 flow [2024-06-21 19:23:15,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=451, PETRI_PLACES=128, PETRI_TRANSITIONS=63} [2024-06-21 19:23:15,326 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 97 predicate places. [2024-06-21 19:23:15,327 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 63 transitions, 451 flow [2024-06-21 19:23:15,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:15,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:23:15,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:23:15,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-21 19:23:15,327 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:23:15,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:23:15,327 INFO L85 PathProgramCache]: Analyzing trace with hash -137538830, now seen corresponding path program 26 times [2024-06-21 19:23:15,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:23:15,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20729467] [2024-06-21 19:23:15,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:23:15,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:23:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:23:17,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:23:17,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:23:17,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20729467] [2024-06-21 19:23:17,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20729467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:23:17,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:23:17,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:23:17,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229769941] [2024-06-21 19:23:17,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:23:17,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:23:17,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:23:17,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:23:17,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:23:17,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:23:17,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 63 transitions, 451 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:17,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:23:17,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:23:17,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:23:17,709 INFO L124 PetriNetUnfolderBase]: 135/306 cut-off events. [2024-06-21 19:23:17,709 INFO L125 PetriNetUnfolderBase]: For 9008/9008 co-relation queries the response was YES. [2024-06-21 19:23:17,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1141 conditions, 306 events. 135/306 cut-off events. For 9008/9008 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1268 event pairs, 14 based on Foata normal form. 6/311 useless extension candidates. Maximal degree in co-relation 1096. Up to 100 conditions per place. [2024-06-21 19:23:17,711 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 29 selfloop transitions, 29 changer transitions 17/79 dead transitions. [2024-06-21 19:23:17,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 79 transitions, 635 flow [2024-06-21 19:23:17,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:23:17,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:23:17,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-21 19:23:17,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-21 19:23:17,711 INFO L175 Difference]: Start difference. First operand has 128 places, 63 transitions, 451 flow. Second operand 12 states and 154 transitions. [2024-06-21 19:23:17,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 79 transitions, 635 flow [2024-06-21 19:23:17,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 79 transitions, 569 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 19:23:17,720 INFO L231 Difference]: Finished difference. Result has 120 places, 56 transitions, 407 flow [2024-06-21 19:23:17,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=407, PETRI_PLACES=120, PETRI_TRANSITIONS=56} [2024-06-21 19:23:17,720 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-21 19:23:17,721 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 56 transitions, 407 flow [2024-06-21 19:23:17,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:17,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:23:17,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:23:17,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-21 19:23:17,721 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:23:17,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:23:17,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1694798996, now seen corresponding path program 27 times [2024-06-21 19:23:17,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:23:17,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236955248] [2024-06-21 19:23:17,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:23:17,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:23:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:23:19,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:23:19,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:23:19,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236955248] [2024-06-21 19:23:19,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236955248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:23:19,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:23:19,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:23:19,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496755065] [2024-06-21 19:23:19,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:23:19,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:23:19,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:23:19,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:23:19,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:23:20,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:23:20,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 56 transitions, 407 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:20,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:23:20,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:23:20,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:23:20,502 INFO L124 PetriNetUnfolderBase]: 115/262 cut-off events. [2024-06-21 19:23:20,502 INFO L125 PetriNetUnfolderBase]: For 7608/7608 co-relation queries the response was YES. [2024-06-21 19:23:20,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 262 events. 115/262 cut-off events. For 7608/7608 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1039 event pairs, 23 based on Foata normal form. 6/267 useless extension candidates. Maximal degree in co-relation 986. Up to 154 conditions per place. [2024-06-21 19:23:20,503 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 36 selfloop transitions, 19 changer transitions 10/69 dead transitions. [2024-06-21 19:23:20,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 69 transitions, 565 flow [2024-06-21 19:23:20,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:23:20,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:23:20,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-21 19:23:20,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-21 19:23:20,504 INFO L175 Difference]: Start difference. First operand has 120 places, 56 transitions, 407 flow. Second operand 12 states and 151 transitions. [2024-06-21 19:23:20,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 69 transitions, 565 flow [2024-06-21 19:23:20,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 69 transitions, 444 flow, removed 3 selfloop flow, removed 21 redundant places. [2024-06-21 19:23:20,511 INFO L231 Difference]: Finished difference. Result has 104 places, 53 transitions, 313 flow [2024-06-21 19:23:20,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=313, PETRI_PLACES=104, PETRI_TRANSITIONS=53} [2024-06-21 19:23:20,511 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 73 predicate places. [2024-06-21 19:23:20,511 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 53 transitions, 313 flow [2024-06-21 19:23:20,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:20,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:23:20,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:23:20,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-21 19:23:20,511 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:23:20,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:23:20,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1732460900, now seen corresponding path program 28 times [2024-06-21 19:23:20,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:23:20,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861493259] [2024-06-21 19:23:20,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:23:20,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:23:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:23:22,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:23:22,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:23:22,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861493259] [2024-06-21 19:23:22,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861493259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:23:22,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:23:22,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:23:22,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775504747] [2024-06-21 19:23:22,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:23:22,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:23:22,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:23:22,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:23:22,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:23:22,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:23:22,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 53 transitions, 313 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:22,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:23:22,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:23:22,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:23:23,220 INFO L124 PetriNetUnfolderBase]: 108/249 cut-off events. [2024-06-21 19:23:23,220 INFO L125 PetriNetUnfolderBase]: For 6610/6614 co-relation queries the response was YES. [2024-06-21 19:23:23,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 898 conditions, 249 events. 108/249 cut-off events. For 6610/6614 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 955 event pairs, 21 based on Foata normal form. 10/258 useless extension candidates. Maximal degree in co-relation 858. Up to 130 conditions per place. [2024-06-21 19:23:23,221 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 36 selfloop transitions, 16 changer transitions 11/67 dead transitions. [2024-06-21 19:23:23,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 67 transitions, 469 flow [2024-06-21 19:23:23,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:23:23,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:23:23,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 19:23:23,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 19:23:23,222 INFO L175 Difference]: Start difference. First operand has 104 places, 53 transitions, 313 flow. Second operand 11 states and 143 transitions. [2024-06-21 19:23:23,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 67 transitions, 469 flow [2024-06-21 19:23:23,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 67 transitions, 425 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 19:23:23,227 INFO L231 Difference]: Finished difference. Result has 99 places, 48 transitions, 278 flow [2024-06-21 19:23:23,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=278, PETRI_PLACES=99, PETRI_TRANSITIONS=48} [2024-06-21 19:23:23,227 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 68 predicate places. [2024-06-21 19:23:23,227 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 48 transitions, 278 flow [2024-06-21 19:23:23,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:23,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:23:23,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:23:23,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-21 19:23:23,227 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:23:23,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:23:23,228 INFO L85 PathProgramCache]: Analyzing trace with hash -446820156, now seen corresponding path program 29 times [2024-06-21 19:23:23,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:23:23,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928222874] [2024-06-21 19:23:23,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:23:23,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:23:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:23:25,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:23:25,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:23:25,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928222874] [2024-06-21 19:23:25,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928222874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:23:25,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:23:25,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:23:25,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602254704] [2024-06-21 19:23:25,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:23:25,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:23:25,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:23:25,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:23:25,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:23:25,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:23:25,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 48 transitions, 278 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:25,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:23:25,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:23:25,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:23:25,918 INFO L124 PetriNetUnfolderBase]: 96/221 cut-off events. [2024-06-21 19:23:25,918 INFO L125 PetriNetUnfolderBase]: For 5816/5816 co-relation queries the response was YES. [2024-06-21 19:23:25,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 809 conditions, 221 events. 96/221 cut-off events. For 5816/5816 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 792 event pairs, 21 based on Foata normal form. 6/226 useless extension candidates. Maximal degree in co-relation 771. Up to 126 conditions per place. [2024-06-21 19:23:25,919 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 30 selfloop transitions, 16 changer transitions 11/61 dead transitions. [2024-06-21 19:23:25,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 61 transitions, 420 flow [2024-06-21 19:23:25,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:23:25,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:23:25,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-21 19:23:25,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-21 19:23:25,920 INFO L175 Difference]: Start difference. First operand has 99 places, 48 transitions, 278 flow. Second operand 12 states and 151 transitions. [2024-06-21 19:23:25,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 61 transitions, 420 flow [2024-06-21 19:23:25,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 61 transitions, 378 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-21 19:23:25,924 INFO L231 Difference]: Finished difference. Result has 92 places, 44 transitions, 251 flow [2024-06-21 19:23:25,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=251, PETRI_PLACES=92, PETRI_TRANSITIONS=44} [2024-06-21 19:23:25,924 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-06-21 19:23:25,924 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 44 transitions, 251 flow [2024-06-21 19:23:25,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:25,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:23:25,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:23:25,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-21 19:23:25,925 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:23:25,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:23:25,925 INFO L85 PathProgramCache]: Analyzing trace with hash 351647304, now seen corresponding path program 30 times [2024-06-21 19:23:25,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:23:25,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362732842] [2024-06-21 19:23:25,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:23:25,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:23:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:23:27,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:23:27,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:23:27,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362732842] [2024-06-21 19:23:27,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362732842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:23:27,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:23:27,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:23:27,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258253260] [2024-06-21 19:23:27,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:23:27,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:23:27,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:23:27,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:23:27,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:23:27,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:23:27,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 44 transitions, 251 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:27,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:23:27,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:23:27,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:23:28,343 INFO L124 PetriNetUnfolderBase]: 88/203 cut-off events. [2024-06-21 19:23:28,343 INFO L125 PetriNetUnfolderBase]: For 4402/4402 co-relation queries the response was YES. [2024-06-21 19:23:28,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 203 events. 88/203 cut-off events. For 4402/4402 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 687 event pairs, 21 based on Foata normal form. 6/208 useless extension candidates. Maximal degree in co-relation 696. Up to 116 conditions per place. [2024-06-21 19:23:28,344 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 29 selfloop transitions, 14 changer transitions 10/57 dead transitions. [2024-06-21 19:23:28,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 57 transitions, 385 flow [2024-06-21 19:23:28,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:23:28,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:23:28,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-21 19:23:28,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-21 19:23:28,344 INFO L175 Difference]: Start difference. First operand has 92 places, 44 transitions, 251 flow. Second operand 12 states and 151 transitions. [2024-06-21 19:23:28,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 57 transitions, 385 flow [2024-06-21 19:23:28,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 57 transitions, 345 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 19:23:28,348 INFO L231 Difference]: Finished difference. Result has 86 places, 41 transitions, 228 flow [2024-06-21 19:23:28,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=228, PETRI_PLACES=86, PETRI_TRANSITIONS=41} [2024-06-21 19:23:28,349 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-21 19:23:28,349 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 41 transitions, 228 flow [2024-06-21 19:23:28,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:28,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:23:28,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:23:28,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-21 19:23:28,349 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:23:28,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:23:28,349 INFO L85 PathProgramCache]: Analyzing trace with hash 351474324, now seen corresponding path program 31 times [2024-06-21 19:23:28,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:23:28,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474409574] [2024-06-21 19:23:28,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:23:28,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:23:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:23:30,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:23:30,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:23:30,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474409574] [2024-06-21 19:23:30,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474409574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:23:30,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:23:30,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:23:30,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385826496] [2024-06-21 19:23:30,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:23:30,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:23:30,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:23:30,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:23:30,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:23:30,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:23:30,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 41 transitions, 228 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:30,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:23:30,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:23:30,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:23:30,714 INFO L124 PetriNetUnfolderBase]: 81/190 cut-off events. [2024-06-21 19:23:30,714 INFO L125 PetriNetUnfolderBase]: For 3490/3490 co-relation queries the response was YES. [2024-06-21 19:23:30,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669 conditions, 190 events. 81/190 cut-off events. For 3490/3490 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 626 event pairs, 19 based on Foata normal form. 6/195 useless extension candidates. Maximal degree in co-relation 638. Up to 98 conditions per place. [2024-06-21 19:23:30,714 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 26 selfloop transitions, 11 changer transitions 14/55 dead transitions. [2024-06-21 19:23:30,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 55 transitions, 360 flow [2024-06-21 19:23:30,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:23:30,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:23:30,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-21 19:23:30,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-21 19:23:30,715 INFO L175 Difference]: Start difference. First operand has 86 places, 41 transitions, 228 flow. Second operand 12 states and 151 transitions. [2024-06-21 19:23:30,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 55 transitions, 360 flow [2024-06-21 19:23:30,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 55 transitions, 326 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 19:23:30,718 INFO L231 Difference]: Finished difference. Result has 82 places, 36 transitions, 195 flow [2024-06-21 19:23:30,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=195, PETRI_PLACES=82, PETRI_TRANSITIONS=36} [2024-06-21 19:23:30,719 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-21 19:23:30,719 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 36 transitions, 195 flow [2024-06-21 19:23:30,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:30,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:23:30,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:23:30,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-21 19:23:30,720 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:23:30,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:23:30,720 INFO L85 PathProgramCache]: Analyzing trace with hash 621305048, now seen corresponding path program 32 times [2024-06-21 19:23:30,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:23:30,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021623650] [2024-06-21 19:23:30,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:23:30,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:23:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:23:32,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:23:32,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:23:32,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021623650] [2024-06-21 19:23:32,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021623650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:23:32,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:23:32,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:23:32,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535908710] [2024-06-21 19:23:32,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:23:32,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:23:32,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:23:32,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:23:32,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:23:33,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 19:23:33,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 36 transitions, 195 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:33,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:23:33,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 19:23:33,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:23:33,443 INFO L124 PetriNetUnfolderBase]: 69/164 cut-off events. [2024-06-21 19:23:33,443 INFO L125 PetriNetUnfolderBase]: For 2926/2926 co-relation queries the response was YES. [2024-06-21 19:23:33,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 164 events. 69/164 cut-off events. For 2926/2926 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 498 event pairs, 19 based on Foata normal form. 6/169 useless extension candidates. Maximal degree in co-relation 552. Up to 100 conditions per place. [2024-06-21 19:23:33,444 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 23 selfloop transitions, 6 changer transitions 16/49 dead transitions. [2024-06-21 19:23:33,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 49 transitions, 313 flow [2024-06-21 19:23:33,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:23:33,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:23:33,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 143 transitions. [2024-06-21 19:23:33,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-21 19:23:33,446 INFO L175 Difference]: Start difference. First operand has 82 places, 36 transitions, 195 flow. Second operand 13 states and 143 transitions. [2024-06-21 19:23:33,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 49 transitions, 313 flow [2024-06-21 19:23:33,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 49 transitions, 281 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-21 19:23:33,448 INFO L231 Difference]: Finished difference. Result has 75 places, 30 transitions, 150 flow [2024-06-21 19:23:33,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=150, PETRI_PLACES=75, PETRI_TRANSITIONS=30} [2024-06-21 19:23:33,448 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-21 19:23:33,448 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 30 transitions, 150 flow [2024-06-21 19:23:33,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:33,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:23:33,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:23:33,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-21 19:23:33,449 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:23:33,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:23:33,449 INFO L85 PathProgramCache]: Analyzing trace with hash 381801270, now seen corresponding path program 33 times [2024-06-21 19:23:33,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:23:33,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555880284] [2024-06-21 19:23:33,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:23:33,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:23:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:23:35,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:23:35,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:23:35,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555880284] [2024-06-21 19:23:35,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555880284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:23:35,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:23:35,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:23:35,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097614518] [2024-06-21 19:23:35,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:23:35,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:23:35,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:23:35,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:23:35,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:23:35,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:23:35,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 30 transitions, 150 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:35,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:23:35,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:23:35,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:23:35,867 INFO L124 PetriNetUnfolderBase]: 59/138 cut-off events. [2024-06-21 19:23:35,868 INFO L125 PetriNetUnfolderBase]: For 1962/1966 co-relation queries the response was YES. [2024-06-21 19:23:35,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 138 events. 59/138 cut-off events. For 1962/1966 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 382 event pairs, 15 based on Foata normal form. 10/147 useless extension candidates. Maximal degree in co-relation 451. Up to 64 conditions per place. [2024-06-21 19:23:35,868 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 21 selfloop transitions, 10 changer transitions 9/44 dead transitions. [2024-06-21 19:23:35,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 44 transitions, 260 flow [2024-06-21 19:23:35,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:23:35,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:23:35,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-21 19:23:35,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-21 19:23:35,869 INFO L175 Difference]: Start difference. First operand has 75 places, 30 transitions, 150 flow. Second operand 12 states and 148 transitions. [2024-06-21 19:23:35,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 44 transitions, 260 flow [2024-06-21 19:23:35,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 44 transitions, 236 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-21 19:23:35,871 INFO L231 Difference]: Finished difference. Result has 64 places, 27 transitions, 135 flow [2024-06-21 19:23:35,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=135, PETRI_PLACES=64, PETRI_TRANSITIONS=27} [2024-06-21 19:23:35,871 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2024-06-21 19:23:35,871 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 27 transitions, 135 flow [2024-06-21 19:23:35,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:35,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:23:35,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:23:35,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-21 19:23:35,871 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:23:35,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:23:35,871 INFO L85 PathProgramCache]: Analyzing trace with hash -638138250, now seen corresponding path program 34 times [2024-06-21 19:23:35,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:23:35,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176336621] [2024-06-21 19:23:35,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:23:35,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:23:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:23:38,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:23:38,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:23:38,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176336621] [2024-06-21 19:23:38,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176336621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:23:38,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:23:38,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:23:38,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952803196] [2024-06-21 19:23:38,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:23:38,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:23:38,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:23:38,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:23:38,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:23:38,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:23:38,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 27 transitions, 135 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:38,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:23:38,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:23:38,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:23:38,819 INFO L124 PetriNetUnfolderBase]: 49/120 cut-off events. [2024-06-21 19:23:38,819 INFO L125 PetriNetUnfolderBase]: For 1186/1186 co-relation queries the response was YES. [2024-06-21 19:23:38,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 120 events. 49/120 cut-off events. For 1186/1186 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 290 event pairs, 17 based on Foata normal form. 6/125 useless extension candidates. Maximal degree in co-relation 388. Up to 60 conditions per place. [2024-06-21 19:23:38,820 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 17 selfloop transitions, 7 changer transitions 12/40 dead transitions. [2024-06-21 19:23:38,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 40 transitions, 235 flow [2024-06-21 19:23:38,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:23:38,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:23:38,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-21 19:23:38,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-21 19:23:38,821 INFO L175 Difference]: Start difference. First operand has 64 places, 27 transitions, 135 flow. Second operand 12 states and 145 transitions. [2024-06-21 19:23:38,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 40 transitions, 235 flow [2024-06-21 19:23:38,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 40 transitions, 209 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-21 19:23:38,822 INFO L231 Difference]: Finished difference. Result has 60 places, 23 transitions, 108 flow [2024-06-21 19:23:38,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=108, PETRI_PLACES=60, PETRI_TRANSITIONS=23} [2024-06-21 19:23:38,822 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 29 predicate places. [2024-06-21 19:23:38,822 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 23 transitions, 108 flow [2024-06-21 19:23:38,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:38,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:23:38,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:23:38,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-21 19:23:38,822 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:23:38,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:23:38,823 INFO L85 PathProgramCache]: Analyzing trace with hash 211098840, now seen corresponding path program 35 times [2024-06-21 19:23:38,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:23:38,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005659729] [2024-06-21 19:23:38,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:23:38,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:23:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:23:40,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:23:40,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:23:40,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005659729] [2024-06-21 19:23:40,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005659729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:23:40,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:23:40,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:23:40,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051549288] [2024-06-21 19:23:40,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:23:40,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:23:40,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:23:40,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:23:40,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:23:41,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 19:23:41,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 23 transitions, 108 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:41,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:23:41,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 19:23:41,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:23:41,301 INFO L124 PetriNetUnfolderBase]: 26/71 cut-off events. [2024-06-21 19:23:41,301 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2024-06-21 19:23:41,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 71 events. 26/71 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 107 event pairs, 0 based on Foata normal form. 6/76 useless extension candidates. Maximal degree in co-relation 180. Up to 24 conditions per place. [2024-06-21 19:23:41,301 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2024-06-21 19:23:41,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 33 transitions, 162 flow [2024-06-21 19:23:41,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:23:41,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:23:41,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-21 19:23:41,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-21 19:23:41,302 INFO L175 Difference]: Start difference. First operand has 60 places, 23 transitions, 108 flow. Second operand 12 states and 138 transitions. [2024-06-21 19:23:41,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 33 transitions, 162 flow [2024-06-21 19:23:41,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 33 transitions, 130 flow, removed 1 selfloop flow, removed 16 redundant places. [2024-06-21 19:23:41,302 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2024-06-21 19:23:41,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2024-06-21 19:23:41,303 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2024-06-21 19:23:41,303 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2024-06-21 19:23:41,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:23:41,305 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-21 19:23:41,310 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-21 19:23:41,310 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-21 19:23:41,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-21 19:23:41,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-21 19:23:41,315 INFO L445 BasicCegarLoop]: Path program histogram: [35, 35, 35, 28, 21, 15, 15, 10, 7, 6, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:23:41,318 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 19:23:41,318 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 19:23:41,323 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-21 19:23:41,323 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-21 19:23:41,324 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 07:23:41 BasicIcfg [2024-06-21 19:23:41,324 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 19:23:41,324 INFO L158 Benchmark]: Toolchain (without parser) took 609674.33ms. Allocated memory was 157.3MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 83.7MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 478.5MB. Max. memory is 16.1GB. [2024-06-21 19:23:41,325 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 117.4MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 19:23:41,326 INFO L158 Benchmark]: Witness Parser took 0.19ms. Allocated memory is still 157.3MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 19:23:41,326 INFO L158 Benchmark]: CACSL2BoogieTranslator took 721.12ms. Allocated memory is still 157.3MB. Free memory was 83.4MB in the beginning and 122.5MB in the end (delta: -39.1MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-21 19:23:41,326 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.40ms. Allocated memory is still 157.3MB. Free memory was 122.5MB in the beginning and 119.0MB in the end (delta: 3.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 19:23:41,326 INFO L158 Benchmark]: Boogie Preprocessor took 48.25ms. Allocated memory is still 157.3MB. Free memory was 119.0MB in the beginning and 115.4MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-21 19:23:41,326 INFO L158 Benchmark]: RCFGBuilder took 869.04ms. Allocated memory is still 157.3MB. Free memory was 115.4MB in the beginning and 54.0MB in the end (delta: 61.4MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. [2024-06-21 19:23:41,327 INFO L158 Benchmark]: TraceAbstraction took 607916.09ms. Allocated memory was 157.3MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 123.4MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 515.9MB. Max. memory is 16.1GB. [2024-06-21 19:23:41,327 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 117.4MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.19ms. Allocated memory is still 157.3MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 721.12ms. Allocated memory is still 157.3MB. Free memory was 83.4MB in the beginning and 122.5MB in the end (delta: -39.1MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.40ms. Allocated memory is still 157.3MB. Free memory was 122.5MB in the beginning and 119.0MB in the end (delta: 3.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 48.25ms. Allocated memory is still 157.3MB. Free memory was 119.0MB in the beginning and 115.4MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 869.04ms. Allocated memory is still 157.3MB. Free memory was 115.4MB in the beginning and 54.0MB in the end (delta: 61.4MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. * TraceAbstraction took 607916.09ms. Allocated memory was 157.3MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 123.4MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 515.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 818]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 819]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 52 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 607.8s, OverallIterations: 231, TraceHistogramMax: 1, PathProgramHistogramMax: 35, EmptinessCheckTime: 0.0s, AutomataDifference: 203.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14306 SdHoareTripleChecker+Valid, 72.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11738 mSDsluCounter, 7446 SdHoareTripleChecker+Invalid, 62.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6418 mSDsCounter, 3448 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 95052 IncrementalHoareTripleChecker+Invalid, 98500 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3448 mSolverCounterUnsat, 1028 mSDtfsCounter, 95052 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2612 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2580 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4156 ImplicationChecksByTransitivity, 113.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3121occurred in iteration=169, InterpolantAutomatonStates: 2457, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.7s SatisfiabilityAnalysisTime, 398.6s InterpolantComputationTime, 4081 NumberOfCodeBlocks, 4081 NumberOfCodeBlocksAsserted, 231 NumberOfCheckSat, 3850 ConstructedInterpolants, 0 QuantifiedInterpolants, 212481 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 231 InterpolantComputations, 231 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-21 19:23:41,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE