./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix009.opt.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/mix009.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix009.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix009.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 23:16:03,615 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:16:03,659 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:16:03,661 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:16:03,662 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:16:03,691 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:16:03,695 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:16:03,695 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:16:03,696 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:16:03,698 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:16:03,699 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:16:03,699 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:16:03,700 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:16:03,701 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:16:03,701 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:16:03,701 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:16:03,701 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:16:03,701 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:16:03,702 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:16:03,702 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:16:03,702 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:16:03,702 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:16:03,703 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:16:03,703 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:16:03,703 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:16:03,703 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:16:03,703 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:16:03,704 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:16:03,704 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:16:03,704 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:16:03,705 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:16:03,705 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:16:03,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:16:03,706 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:16:03,706 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:16:03,706 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:16:03,706 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:16:03,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:16:03,706 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:16:03,707 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:16:03,707 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:16:03,707 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:16:03,707 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:16:03,707 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:16:03,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:16:03,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:16:03,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:16:03,947 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:16:03,948 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:16:03,948 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix009.opt.i [2024-06-27 23:16:05,089 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:16:05,336 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:16:05,337 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix009.opt.i [2024-06-27 23:16:05,349 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/969e26153/6f01fb24b4c84581b65c82b974fb44e8/FLAGed8eae3f6 [2024-06-27 23:16:05,359 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/969e26153/6f01fb24b4c84581b65c82b974fb44e8 [2024-06-27 23:16:05,361 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:16:05,362 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:16:05,362 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix009.opt.yml/witness.yml [2024-06-27 23:16:05,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:16:05,427 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:16:05,428 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:16:05,428 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:16:05,432 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:16:05,433 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:16:05" (1/2) ... [2024-06-27 23:16:05,434 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@634d41c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:16:05, skipping insertion in model container [2024-06-27 23:16:05,434 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:16:05" (1/2) ... [2024-06-27 23:16:05,435 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5acd4c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:16:05, skipping insertion in model container [2024-06-27 23:16:05,436 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:16:05" (2/2) ... [2024-06-27 23:16:05,437 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@634d41c7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:16:05, skipping insertion in model container [2024-06-27 23:16:05,437 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:16:05" (2/2) ... [2024-06-27 23:16:05,437 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:16:05,461 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:16:05,462 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_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 )x >= 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 )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_p0_EBX) - (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_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )z >= 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 )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 23:16:05,462 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_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 )x >= 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 )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_p0_EBX) - (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_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )z >= 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 )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 23:16:05,462 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:16:05,462 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-27 23:16:05,501 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:16:05,876 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:16:05,885 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:16:05,979 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:16:06,004 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:16:06,004 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:16:06 WrapperNode [2024-06-27 23:16:06,005 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:16:06,005 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:16:06,005 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:16:06,006 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:16:06,011 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:16:06" (1/1) ... [2024-06-27 23:16:06,031 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:16:06" (1/1) ... [2024-06-27 23:16:06,082 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 138 [2024-06-27 23:16:06,082 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:16:06,083 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:16:06,083 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:16:06,083 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:16:06,091 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:16:06" (1/1) ... [2024-06-27 23:16:06,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:16:06" (1/1) ... [2024-06-27 23:16:06,098 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:16:06" (1/1) ... [2024-06-27 23:16:06,112 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 23:16:06,113 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:16:06" (1/1) ... [2024-06-27 23:16:06,113 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:16:06" (1/1) ... [2024-06-27 23:16:06,119 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:16:06" (1/1) ... [2024-06-27 23:16:06,121 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:16:06" (1/1) ... [2024-06-27 23:16:06,123 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:16:06" (1/1) ... [2024-06-27 23:16:06,124 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:16:06" (1/1) ... [2024-06-27 23:16:06,127 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:16:06,128 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:16:06,128 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:16:06,128 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:16:06,129 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:16:06" (1/1) ... [2024-06-27 23:16:06,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:16:06,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:16:06,198 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 23:16:06,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 23:16:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:16:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:16:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:16:06,234 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:16:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:16:06,235 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:16:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:16:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:16:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:16:06,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:16:06,236 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 23:16:06,377 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:16:06,378 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:16:06,729 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:16:06,729 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:16:06,912 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:16:06,913 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:16:06,915 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:16:06 BoogieIcfgContainer [2024-06-27 23:16:06,915 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:16:06,918 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:16:06,918 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:16:06,921 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:16:06,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:16:05" (1/4) ... [2024-06-27 23:16:06,922 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3e5e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:16:06, skipping insertion in model container [2024-06-27 23:16:06,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:16:05" (2/4) ... [2024-06-27 23:16:06,922 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3e5e61 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:16:06, skipping insertion in model container [2024-06-27 23:16:06,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:16:06" (3/4) ... [2024-06-27 23:16:06,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3e5e61 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:16:06, skipping insertion in model container [2024-06-27 23:16:06,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:16:06" (4/4) ... [2024-06-27 23:16:06,926 INFO L112 eAbstractionObserver]: Analyzing ICFG mix009.opt.i [2024-06-27 23:16:06,941 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:16:06,942 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 23:16:06,942 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:16:06,978 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:16:07,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-27 23:16:07,032 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-27 23:16:07,032 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:16:07,033 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 47 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. [2024-06-27 23:16:07,034 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-27 23:16:07,037 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-27 23:16:07,044 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:16:07,051 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;@33e38ea9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:16:07,052 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 23:16:07,058 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:16:07,058 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 23:16:07,058 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:16:07,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:07,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:16:07,059 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)] === [2024-06-27 23:16:07,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:07,065 INFO L85 PathProgramCache]: Analyzing trace with hash 364831899, now seen corresponding path program 1 times [2024-06-27 23:16:07,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:07,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156653252] [2024-06-27 23:16:07,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:07,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:08,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:08,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:08,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156653252] [2024-06-27 23:16:08,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156653252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:08,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:08,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:16:08,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628119912] [2024-06-27 23:16:08,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:08,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:16:08,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:08,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:16:08,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:16:08,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-27 23:16:08,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:08,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:08,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-27 23:16:08,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:08,305 INFO L124 PetriNetUnfolderBase]: 162/316 cut-off events. [2024-06-27 23:16:08,305 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 23:16:08,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 316 events. 162/316 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1286 event pairs, 97 based on Foata normal form. 1/303 useless extension candidates. Maximal degree in co-relation 616. Up to 288 conditions per place. [2024-06-27 23:16:08,309 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 21 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-27 23:16:08,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 117 flow [2024-06-27 23:16:08,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:16:08,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:16:08,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-06-27 23:16:08,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2024-06-27 23:16:08,319 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 59 transitions. [2024-06-27 23:16:08,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 117 flow [2024-06-27 23:16:08,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 23:16:08,322 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-27 23:16:08,323 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} [2024-06-27 23:16:08,326 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-27 23:16:08,326 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-27 23:16:08,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:08,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:08,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:08,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:16:08,327 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)] === [2024-06-27 23:16:08,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:08,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1583835590, now seen corresponding path program 1 times [2024-06-27 23:16:08,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:08,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23942810] [2024-06-27 23:16:08,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:08,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:09,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:09,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:09,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23942810] [2024-06-27 23:16:09,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23942810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:09,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:09,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:16:09,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727969636] [2024-06-27 23:16:09,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:09,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:16:09,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:09,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:16:09,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:16:09,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-27 23:16:09,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:09,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:09,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-27 23:16:09,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:09,166 INFO L124 PetriNetUnfolderBase]: 186/346 cut-off events. [2024-06-27 23:16:09,166 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-06-27 23:16:09,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 346 events. 186/346 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1381 event pairs, 94 based on Foata normal form. 2/345 useless extension candidates. Maximal degree in co-relation 776. Up to 319 conditions per place. [2024-06-27 23:16:09,168 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 26 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-27 23:16:09,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 161 flow [2024-06-27 23:16:09,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:16:09,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:16:09,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-06-27 23:16:09,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5703125 [2024-06-27 23:16:09,170 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 73 transitions. [2024-06-27 23:16:09,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 161 flow [2024-06-27 23:16:09,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:16:09,172 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-27 23:16:09,172 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} [2024-06-27 23:16:09,172 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-27 23:16:09,173 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-27 23:16:09,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:09,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:09,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:09,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:16:09,173 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)] === [2024-06-27 23:16:09,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:09,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1854262106, now seen corresponding path program 1 times [2024-06-27 23:16:09,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:09,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111426662] [2024-06-27 23:16:09,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:09,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:10,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:10,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:10,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111426662] [2024-06-27 23:16:10,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111426662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:10,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:10,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:16:10,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391979007] [2024-06-27 23:16:10,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:10,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:16:10,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:10,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:16:10,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:16:10,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:16:10,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:10,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:10,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:16:10,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:10,175 INFO L124 PetriNetUnfolderBase]: 219/397 cut-off events. [2024-06-27 23:16:10,175 INFO L125 PetriNetUnfolderBase]: For 228/228 co-relation queries the response was YES. [2024-06-27 23:16:10,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1003 conditions, 397 events. 219/397 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1503 event pairs, 99 based on Foata normal form. 2/396 useless extension candidates. Maximal degree in co-relation 989. Up to 366 conditions per place. [2024-06-27 23:16:10,179 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 31 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-27 23:16:10,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 211 flow [2024-06-27 23:16:10,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:16:10,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:16:10,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-06-27 23:16:10,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-27 23:16:10,184 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 85 transitions. [2024-06-27 23:16:10,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 211 flow [2024-06-27 23:16:10,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 202 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 23:16:10,188 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-27 23:16:10,188 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} [2024-06-27 23:16:10,189 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-27 23:16:10,189 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-27 23:16:10,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:10,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:10,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:10,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:16:10,190 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:16:10,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:10,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1592138219, now seen corresponding path program 1 times [2024-06-27 23:16:10,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:10,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328578216] [2024-06-27 23:16:10,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:10,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:11,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:11,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:11,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328578216] [2024-06-27 23:16:11,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328578216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:11,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:11,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:16:11,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451056099] [2024-06-27 23:16:11,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:11,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:16:11,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:11,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:16:11,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:16:11,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:16:11,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:11,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:11,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:16:11,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:11,238 INFO L124 PetriNetUnfolderBase]: 216/392 cut-off events. [2024-06-27 23:16:11,239 INFO L125 PetriNetUnfolderBase]: For 386/386 co-relation queries the response was YES. [2024-06-27 23:16:11,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1082 conditions, 392 events. 216/392 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1498 event pairs, 78 based on Foata normal form. 2/392 useless extension candidates. Maximal degree in co-relation 1067. Up to 352 conditions per place. [2024-06-27 23:16:11,241 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 35 selfloop transitions, 9 changer transitions 0/48 dead transitions. [2024-06-27 23:16:11,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 259 flow [2024-06-27 23:16:11,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:16:11,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:16:11,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-27 23:16:11,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 23:16:11,243 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 6 states and 100 transitions. [2024-06-27 23:16:11,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 259 flow [2024-06-27 23:16:11,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 48 transitions, 244 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 23:16:11,245 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 145 flow [2024-06-27 23:16:11,246 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=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=145, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2024-06-27 23:16:11,246 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-27 23:16:11,246 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 145 flow [2024-06-27 23:16:11,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:11,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:11,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:11,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:16:11,247 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)] === [2024-06-27 23:16:11,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:11,247 INFO L85 PathProgramCache]: Analyzing trace with hash 465574693, now seen corresponding path program 1 times [2024-06-27 23:16:11,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:11,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673593055] [2024-06-27 23:16:11,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:11,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:11,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:12,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:12,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:12,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673593055] [2024-06-27 23:16:12,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673593055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:12,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:12,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:16:12,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941415327] [2024-06-27 23:16:12,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:12,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:16:12,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:12,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:16:12,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:16:12,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:16:12,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 145 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:12,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:12,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:16:12,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:12,528 INFO L124 PetriNetUnfolderBase]: 213/387 cut-off events. [2024-06-27 23:16:12,529 INFO L125 PetriNetUnfolderBase]: For 580/580 co-relation queries the response was YES. [2024-06-27 23:16:12,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1151 conditions, 387 events. 213/387 cut-off events. For 580/580 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1451 event pairs, 57 based on Foata normal form. 2/387 useless extension candidates. Maximal degree in co-relation 1135. Up to 338 conditions per place. [2024-06-27 23:16:12,531 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 39 selfloop transitions, 11 changer transitions 0/54 dead transitions. [2024-06-27 23:16:12,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 54 transitions, 307 flow [2024-06-27 23:16:12,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:16:12,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:16:12,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-27 23:16:12,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133928571428571 [2024-06-27 23:16:12,533 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 145 flow. Second operand 7 states and 115 transitions. [2024-06-27 23:16:12,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 54 transitions, 307 flow [2024-06-27 23:16:12,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 54 transitions, 286 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 23:16:12,535 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 169 flow [2024-06-27 23:16:12,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=169, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2024-06-27 23:16:12,536 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-27 23:16:12,536 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 169 flow [2024-06-27 23:16:12,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:12,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:12,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:12,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:16:12,537 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)] === [2024-06-27 23:16:12,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:12,537 INFO L85 PathProgramCache]: Analyzing trace with hash 22408742, now seen corresponding path program 1 times [2024-06-27 23:16:12,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:12,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80173645] [2024-06-27 23:16:12,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:12,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:13,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:13,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:13,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80173645] [2024-06-27 23:16:13,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80173645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:13,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:13,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:16:13,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807728799] [2024-06-27 23:16:13,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:13,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:16:13,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:13,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:16:13,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:16:13,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:16:13,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 169 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:13,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:13,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:16:13,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:13,432 INFO L124 PetriNetUnfolderBase]: 194/367 cut-off events. [2024-06-27 23:16:13,432 INFO L125 PetriNetUnfolderBase]: For 792/792 co-relation queries the response was YES. [2024-06-27 23:16:13,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1165 conditions, 367 events. 194/367 cut-off events. For 792/792 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1426 event pairs, 56 based on Foata normal form. 1/366 useless extension candidates. Maximal degree in co-relation 1147. Up to 341 conditions per place. [2024-06-27 23:16:13,434 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 29 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2024-06-27 23:16:13,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 42 transitions, 269 flow [2024-06-27 23:16:13,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:16:13,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:16:13,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-06-27 23:16:13,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2024-06-27 23:16:13,436 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 169 flow. Second operand 5 states and 71 transitions. [2024-06-27 23:16:13,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 42 transitions, 269 flow [2024-06-27 23:16:13,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 240 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 23:16:13,438 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 186 flow [2024-06-27 23:16:13,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-27 23:16:13,439 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2024-06-27 23:16:13,439 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 186 flow [2024-06-27 23:16:13,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:13,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:13,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:13,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:16:13,440 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)] === [2024-06-27 23:16:13,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:13,440 INFO L85 PathProgramCache]: Analyzing trace with hash 694672028, now seen corresponding path program 1 times [2024-06-27 23:16:13,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:13,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597829088] [2024-06-27 23:16:13,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:13,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:14,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:14,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:14,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597829088] [2024-06-27 23:16:14,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597829088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:14,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:14,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:16:14,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517416967] [2024-06-27 23:16:14,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:14,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:16:14,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:14,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:16:14,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:16:14,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:16:14,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:14,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:14,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:16:14,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:14,868 INFO L124 PetriNetUnfolderBase]: 209/381 cut-off events. [2024-06-27 23:16:14,868 INFO L125 PetriNetUnfolderBase]: For 1003/1003 co-relation queries the response was YES. [2024-06-27 23:16:14,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1276 conditions, 381 events. 209/381 cut-off events. For 1003/1003 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1417 event pairs, 55 based on Foata normal form. 1/380 useless extension candidates. Maximal degree in co-relation 1255. Up to 362 conditions per place. [2024-06-27 23:16:14,870 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 32 selfloop transitions, 10 changer transitions 0/45 dead transitions. [2024-06-27 23:16:14,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 45 transitions, 290 flow [2024-06-27 23:16:14,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:16:14,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:16:14,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-27 23:16:14,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-27 23:16:14,872 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 186 flow. Second operand 6 states and 77 transitions. [2024-06-27 23:16:14,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 45 transitions, 290 flow [2024-06-27 23:16:14,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 45 transitions, 279 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 23:16:14,874 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 212 flow [2024-06-27 23:16:14,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-06-27 23:16:14,875 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2024-06-27 23:16:14,875 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 212 flow [2024-06-27 23:16:14,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:14,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:14,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:14,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:16:14,876 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)] === [2024-06-27 23:16:14,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:14,876 INFO L85 PathProgramCache]: Analyzing trace with hash 996349655, now seen corresponding path program 1 times [2024-06-27 23:16:14,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:14,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977235535] [2024-06-27 23:16:14,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:14,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:15,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:15,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:15,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977235535] [2024-06-27 23:16:15,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977235535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:15,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:15,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:16:15,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989013585] [2024-06-27 23:16:15,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:15,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:16:15,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:15,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:16:15,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:16:15,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:16:15,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:15,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:15,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:16:15,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:15,889 INFO L124 PetriNetUnfolderBase]: 200/378 cut-off events. [2024-06-27 23:16:15,890 INFO L125 PetriNetUnfolderBase]: For 1256/1256 co-relation queries the response was YES. [2024-06-27 23:16:15,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1340 conditions, 378 events. 200/378 cut-off events. For 1256/1256 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1457 event pairs, 55 based on Foata normal form. 1/376 useless extension candidates. Maximal degree in co-relation 1317. Up to 339 conditions per place. [2024-06-27 23:16:15,892 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 34 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2024-06-27 23:16:15,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 350 flow [2024-06-27 23:16:15,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:16:15,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:16:15,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 85 transitions. [2024-06-27 23:16:15,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4427083333333333 [2024-06-27 23:16:15,893 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 212 flow. Second operand 6 states and 85 transitions. [2024-06-27 23:16:15,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 350 flow [2024-06-27 23:16:15,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 329 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 23:16:15,896 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 260 flow [2024-06-27 23:16:15,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-06-27 23:16:15,896 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2024-06-27 23:16:15,896 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 260 flow [2024-06-27 23:16:15,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:15,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:15,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:15,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:16:15,897 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)] === [2024-06-27 23:16:15,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:15,898 INFO L85 PathProgramCache]: Analyzing trace with hash 59987525, now seen corresponding path program 2 times [2024-06-27 23:16:15,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:15,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139236954] [2024-06-27 23:16:15,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:15,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:16,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:16,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:16,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139236954] [2024-06-27 23:16:16,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139236954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:16,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:16,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:16:16,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440581777] [2024-06-27 23:16:16,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:16,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:16:16,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:16,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:16:16,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:16:16,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:16:16,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 260 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:16,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:16,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:16:16,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:16,987 INFO L124 PetriNetUnfolderBase]: 203/383 cut-off events. [2024-06-27 23:16:16,988 INFO L125 PetriNetUnfolderBase]: For 1596/1596 co-relation queries the response was YES. [2024-06-27 23:16:16,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1455 conditions, 383 events. 203/383 cut-off events. For 1596/1596 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1476 event pairs, 57 based on Foata normal form. 1/381 useless extension candidates. Maximal degree in co-relation 1430. Up to 334 conditions per place. [2024-06-27 23:16:16,990 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 33 selfloop transitions, 18 changer transitions 0/56 dead transitions. [2024-06-27 23:16:16,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 416 flow [2024-06-27 23:16:16,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:16:16,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:16:16,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-27 23:16:16,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-27 23:16:16,991 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 260 flow. Second operand 6 states and 86 transitions. [2024-06-27 23:16:16,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 416 flow [2024-06-27 23:16:16,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 56 transitions, 402 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 23:16:16,994 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 315 flow [2024-06-27 23:16:16,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=315, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-06-27 23:16:16,994 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2024-06-27 23:16:16,995 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 315 flow [2024-06-27 23:16:16,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:16,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:16,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:16,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:16:16,995 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)] === [2024-06-27 23:16:16,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:16,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1261307, now seen corresponding path program 3 times [2024-06-27 23:16:16,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:16,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154455371] [2024-06-27 23:16:16,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:16,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:17,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:17,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:17,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154455371] [2024-06-27 23:16:17,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154455371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:17,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:17,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:16:17,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715521158] [2024-06-27 23:16:17,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:17,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:16:17,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:17,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:16:17,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:16:17,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:16:17,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 315 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:17,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:17,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:16:17,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:17,973 INFO L124 PetriNetUnfolderBase]: 201/380 cut-off events. [2024-06-27 23:16:17,974 INFO L125 PetriNetUnfolderBase]: For 1996/1996 co-relation queries the response was YES. [2024-06-27 23:16:17,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1523 conditions, 380 events. 201/380 cut-off events. For 1996/1996 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1448 event pairs, 54 based on Foata normal form. 1/379 useless extension candidates. Maximal degree in co-relation 1495. Up to 341 conditions per place. [2024-06-27 23:16:17,976 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 41 selfloop transitions, 13 changer transitions 0/59 dead transitions. [2024-06-27 23:16:17,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 59 transitions, 447 flow [2024-06-27 23:16:17,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:16:17,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:16:17,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-27 23:16:17,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 23:16:17,989 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 315 flow. Second operand 7 states and 96 transitions. [2024-06-27 23:16:17,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 59 transitions, 447 flow [2024-06-27 23:16:17,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 424 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-27 23:16:17,995 INFO L231 Difference]: Finished difference. Result has 62 places, 50 transitions, 323 flow [2024-06-27 23:16:17,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=323, PETRI_PLACES=62, PETRI_TRANSITIONS=50} [2024-06-27 23:16:17,997 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 31 predicate places. [2024-06-27 23:16:17,997 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 50 transitions, 323 flow [2024-06-27 23:16:17,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:17,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:17,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:17,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:16:17,998 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:16:17,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:17,999 INFO L85 PathProgramCache]: Analyzing trace with hash 740713892, now seen corresponding path program 1 times [2024-06-27 23:16:17,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:18,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825490796] [2024-06-27 23:16:18,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:18,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:19,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:19,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:19,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825490796] [2024-06-27 23:16:19,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825490796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:19,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:19,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:16:19,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124741028] [2024-06-27 23:16:19,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:19,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:16:19,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:19,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:16:19,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:16:19,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:16:19,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 50 transitions, 323 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:19,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:19,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:16:19,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:19,317 INFO L124 PetriNetUnfolderBase]: 213/388 cut-off events. [2024-06-27 23:16:19,318 INFO L125 PetriNetUnfolderBase]: For 2345/2345 co-relation queries the response was YES. [2024-06-27 23:16:19,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1583 conditions, 388 events. 213/388 cut-off events. For 2345/2345 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1410 event pairs, 32 based on Foata normal form. 4/390 useless extension candidates. Maximal degree in co-relation 1554. Up to 315 conditions per place. [2024-06-27 23:16:19,320 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 49 selfloop transitions, 16 changer transitions 0/69 dead transitions. [2024-06-27 23:16:19,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 69 transitions, 497 flow [2024-06-27 23:16:19,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:16:19,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:16:19,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-27 23:16:19,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48828125 [2024-06-27 23:16:19,321 INFO L175 Difference]: Start difference. First operand has 62 places, 50 transitions, 323 flow. Second operand 8 states and 125 transitions. [2024-06-27 23:16:19,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 69 transitions, 497 flow [2024-06-27 23:16:19,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 69 transitions, 452 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 23:16:19,326 INFO L231 Difference]: Finished difference. Result has 63 places, 49 transitions, 302 flow [2024-06-27 23:16:19,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=302, PETRI_PLACES=63, PETRI_TRANSITIONS=49} [2024-06-27 23:16:19,326 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-06-27 23:16:19,326 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 49 transitions, 302 flow [2024-06-27 23:16:19,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:19,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:19,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:19,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:16:19,327 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)] === [2024-06-27 23:16:19,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:19,328 INFO L85 PathProgramCache]: Analyzing trace with hash 59997445, now seen corresponding path program 1 times [2024-06-27 23:16:19,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:19,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226708884] [2024-06-27 23:16:19,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:19,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:21,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:21,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:21,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226708884] [2024-06-27 23:16:21,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226708884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:21,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:21,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:16:21,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291495111] [2024-06-27 23:16:21,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:21,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:16:21,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:21,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:16:21,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:16:21,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:16:21,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 49 transitions, 302 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:21,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:21,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:16:21,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:21,449 INFO L124 PetriNetUnfolderBase]: 194/368 cut-off events. [2024-06-27 23:16:21,449 INFO L125 PetriNetUnfolderBase]: For 2630/2630 co-relation queries the response was YES. [2024-06-27 23:16:21,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1551 conditions, 368 events. 194/368 cut-off events. For 2630/2630 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1386 event pairs, 50 based on Foata normal form. 1/367 useless extension candidates. Maximal degree in co-relation 1522. Up to 335 conditions per place. [2024-06-27 23:16:21,452 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 40 selfloop transitions, 12 changer transitions 0/57 dead transitions. [2024-06-27 23:16:21,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 57 transitions, 430 flow [2024-06-27 23:16:21,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:16:21,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:16:21,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-27 23:16:21,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-27 23:16:21,453 INFO L175 Difference]: Start difference. First operand has 63 places, 49 transitions, 302 flow. Second operand 7 states and 92 transitions. [2024-06-27 23:16:21,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 57 transitions, 430 flow [2024-06-27 23:16:21,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 57 transitions, 390 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 23:16:21,456 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 305 flow [2024-06-27 23:16:21,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=305, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2024-06-27 23:16:21,456 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2024-06-27 23:16:21,457 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 305 flow [2024-06-27 23:16:21,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:21,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:21,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:21,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:16:21,457 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)] === [2024-06-27 23:16:21,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:21,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1623259203, now seen corresponding path program 1 times [2024-06-27 23:16:21,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:21,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152389917] [2024-06-27 23:16:21,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:21,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:22,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:22,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:22,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152389917] [2024-06-27 23:16:22,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152389917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:22,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:22,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:16:22,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927219707] [2024-06-27 23:16:22,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:22,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:16:22,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:22,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:16:22,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:16:22,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:16:22,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 305 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:22,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:22,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:16:22,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:22,591 INFO L124 PetriNetUnfolderBase]: 218/398 cut-off events. [2024-06-27 23:16:22,591 INFO L125 PetriNetUnfolderBase]: For 3024/3024 co-relation queries the response was YES. [2024-06-27 23:16:22,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1686 conditions, 398 events. 218/398 cut-off events. For 3024/3024 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1476 event pairs, 50 based on Foata normal form. 1/395 useless extension candidates. Maximal degree in co-relation 1655. Up to 355 conditions per place. [2024-06-27 23:16:22,594 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 45 selfloop transitions, 17 changer transitions 0/65 dead transitions. [2024-06-27 23:16:22,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 65 transitions, 483 flow [2024-06-27 23:16:22,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:16:22,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:16:22,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-27 23:16:22,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-27 23:16:22,595 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 305 flow. Second operand 7 states and 92 transitions. [2024-06-27 23:16:22,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 65 transitions, 483 flow [2024-06-27 23:16:22,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 65 transitions, 456 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 23:16:22,599 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 360 flow [2024-06-27 23:16:22,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=360, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2024-06-27 23:16:22,600 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 36 predicate places. [2024-06-27 23:16:22,600 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 360 flow [2024-06-27 23:16:22,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:22,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:22,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:22,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:16:22,600 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)] === [2024-06-27 23:16:22,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:22,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1362067823, now seen corresponding path program 1 times [2024-06-27 23:16:22,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:22,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531062195] [2024-06-27 23:16:22,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:22,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:23,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:23,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:23,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531062195] [2024-06-27 23:16:23,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531062195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:23,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:23,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:16:23,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934400844] [2024-06-27 23:16:23,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:23,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:16:23,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:23,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:16:23,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:16:23,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:16:23,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 360 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:23,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:23,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:16:23,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:24,064 INFO L124 PetriNetUnfolderBase]: 221/402 cut-off events. [2024-06-27 23:16:24,064 INFO L125 PetriNetUnfolderBase]: For 3506/3506 co-relation queries the response was YES. [2024-06-27 23:16:24,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1796 conditions, 402 events. 221/402 cut-off events. For 3506/3506 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1494 event pairs, 48 based on Foata normal form. 1/400 useless extension candidates. Maximal degree in co-relation 1763. Up to 371 conditions per place. [2024-06-27 23:16:24,066 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 48 selfloop transitions, 15 changer transitions 0/66 dead transitions. [2024-06-27 23:16:24,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 66 transitions, 516 flow [2024-06-27 23:16:24,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:16:24,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:16:24,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-27 23:16:24,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39732142857142855 [2024-06-27 23:16:24,068 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 360 flow. Second operand 7 states and 89 transitions. [2024-06-27 23:16:24,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 66 transitions, 516 flow [2024-06-27 23:16:24,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 66 transitions, 493 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-27 23:16:24,071 INFO L231 Difference]: Finished difference. Result has 72 places, 59 transitions, 388 flow [2024-06-27 23:16:24,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=388, PETRI_PLACES=72, PETRI_TRANSITIONS=59} [2024-06-27 23:16:24,072 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-27 23:16:24,072 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 59 transitions, 388 flow [2024-06-27 23:16:24,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:24,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:24,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:24,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:16:24,073 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)] === [2024-06-27 23:16:24,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:24,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1623438693, now seen corresponding path program 2 times [2024-06-27 23:16:24,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:24,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542450478] [2024-06-27 23:16:24,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:24,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:25,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:25,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:25,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542450478] [2024-06-27 23:16:25,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542450478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:25,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:25,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:16:25,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156587350] [2024-06-27 23:16:25,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:25,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:16:25,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:25,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:16:25,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:16:25,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:16:25,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 59 transitions, 388 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:25,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:25,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:16:25,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:25,364 INFO L124 PetriNetUnfolderBase]: 224/408 cut-off events. [2024-06-27 23:16:25,364 INFO L125 PetriNetUnfolderBase]: For 4051/4051 co-relation queries the response was YES. [2024-06-27 23:16:25,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1889 conditions, 408 events. 224/408 cut-off events. For 4051/4051 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1507 event pairs, 49 based on Foata normal form. 1/405 useless extension candidates. Maximal degree in co-relation 1853. Up to 359 conditions per place. [2024-06-27 23:16:25,367 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 45 selfloop transitions, 20 changer transitions 0/68 dead transitions. [2024-06-27 23:16:25,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 68 transitions, 552 flow [2024-06-27 23:16:25,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:16:25,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:16:25,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-27 23:16:25,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41517857142857145 [2024-06-27 23:16:25,368 INFO L175 Difference]: Start difference. First operand has 72 places, 59 transitions, 388 flow. Second operand 7 states and 93 transitions. [2024-06-27 23:16:25,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 68 transitions, 552 flow [2024-06-27 23:16:25,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 68 transitions, 523 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 23:16:25,373 INFO L231 Difference]: Finished difference. Result has 75 places, 61 transitions, 424 flow [2024-06-27 23:16:25,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=424, PETRI_PLACES=75, PETRI_TRANSITIONS=61} [2024-06-27 23:16:25,373 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-27 23:16:25,373 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 61 transitions, 424 flow [2024-06-27 23:16:25,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:25,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:25,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:25,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:16:25,374 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)] === [2024-06-27 23:16:25,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:25,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1859614301, now seen corresponding path program 2 times [2024-06-27 23:16:25,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:25,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237082281] [2024-06-27 23:16:25,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:25,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:26,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:26,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:26,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237082281] [2024-06-27 23:16:26,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237082281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:26,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:26,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:16:26,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57952266] [2024-06-27 23:16:26,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:26,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:16:26,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:26,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:16:26,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:16:26,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:16:26,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 61 transitions, 424 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:26,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:26,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:16:26,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:26,994 INFO L124 PetriNetUnfolderBase]: 227/413 cut-off events. [2024-06-27 23:16:26,994 INFO L125 PetriNetUnfolderBase]: For 4717/4717 co-relation queries the response was YES. [2024-06-27 23:16:26,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1992 conditions, 413 events. 227/413 cut-off events. For 4717/4717 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1536 event pairs, 50 based on Foata normal form. 1/410 useless extension candidates. Maximal degree in co-relation 1955. Up to 372 conditions per place. [2024-06-27 23:16:26,997 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 46 selfloop transitions, 20 changer transitions 0/69 dead transitions. [2024-06-27 23:16:26,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 69 transitions, 586 flow [2024-06-27 23:16:26,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:16:26,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:16:26,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-27 23:16:26,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39732142857142855 [2024-06-27 23:16:26,999 INFO L175 Difference]: Start difference. First operand has 75 places, 61 transitions, 424 flow. Second operand 7 states and 89 transitions. [2024-06-27 23:16:26,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 69 transitions, 586 flow [2024-06-27 23:16:27,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 69 transitions, 537 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 23:16:27,003 INFO L231 Difference]: Finished difference. Result has 77 places, 63 transitions, 440 flow [2024-06-27 23:16:27,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=70, 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=440, PETRI_PLACES=77, PETRI_TRANSITIONS=63} [2024-06-27 23:16:27,003 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2024-06-27 23:16:27,004 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 63 transitions, 440 flow [2024-06-27 23:16:27,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:27,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:27,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:27,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:16:27,004 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)] === [2024-06-27 23:16:27,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:27,005 INFO L85 PathProgramCache]: Analyzing trace with hash 137702471, now seen corresponding path program 3 times [2024-06-27 23:16:27,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:27,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408786683] [2024-06-27 23:16:27,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:27,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:27,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:27,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408786683] [2024-06-27 23:16:27,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408786683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:27,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:27,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:16:27,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065620409] [2024-06-27 23:16:27,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:27,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:16:27,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:27,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:16:27,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:16:28,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:16:28,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 63 transitions, 440 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:28,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:28,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:16:28,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:28,236 INFO L124 PetriNetUnfolderBase]: 230/418 cut-off events. [2024-06-27 23:16:28,236 INFO L125 PetriNetUnfolderBase]: For 5312/5312 co-relation queries the response was YES. [2024-06-27 23:16:28,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2084 conditions, 418 events. 230/418 cut-off events. For 5312/5312 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1558 event pairs, 53 based on Foata normal form. 1/415 useless extension candidates. Maximal degree in co-relation 2046. Up to 351 conditions per place. [2024-06-27 23:16:28,239 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 44 selfloop transitions, 27 changer transitions 0/74 dead transitions. [2024-06-27 23:16:28,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 74 transitions, 670 flow [2024-06-27 23:16:28,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:16:28,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:16:28,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-27 23:16:28,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41517857142857145 [2024-06-27 23:16:28,240 INFO L175 Difference]: Start difference. First operand has 77 places, 63 transitions, 440 flow. Second operand 7 states and 93 transitions. [2024-06-27 23:16:28,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 74 transitions, 670 flow [2024-06-27 23:16:28,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 74 transitions, 621 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 23:16:28,244 INFO L231 Difference]: Finished difference. Result has 79 places, 67 transitions, 494 flow [2024-06-27 23:16:28,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=494, PETRI_PLACES=79, PETRI_TRANSITIONS=67} [2024-06-27 23:16:28,245 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 48 predicate places. [2024-06-27 23:16:28,245 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 67 transitions, 494 flow [2024-06-27 23:16:28,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:28,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:28,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:28,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:16:28,245 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)] === [2024-06-27 23:16:28,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:28,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1859910971, now seen corresponding path program 3 times [2024-06-27 23:16:28,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:28,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738672705] [2024-06-27 23:16:28,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:28,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:29,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:29,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:29,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738672705] [2024-06-27 23:16:29,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738672705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:29,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:29,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:16:29,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640420948] [2024-06-27 23:16:29,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:29,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:16:29,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:29,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:16:29,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:16:29,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:16:29,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 67 transitions, 494 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:29,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:29,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:16:29,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:29,809 INFO L124 PetriNetUnfolderBase]: 233/422 cut-off events. [2024-06-27 23:16:29,810 INFO L125 PetriNetUnfolderBase]: For 6020/6020 co-relation queries the response was YES. [2024-06-27 23:16:29,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 422 events. 233/422 cut-off events. For 6020/6020 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1568 event pairs, 50 based on Foata normal form. 1/420 useless extension candidates. Maximal degree in co-relation 2145. Up to 369 conditions per place. [2024-06-27 23:16:29,812 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 48 selfloop transitions, 27 changer transitions 0/78 dead transitions. [2024-06-27 23:16:29,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 78 transitions, 734 flow [2024-06-27 23:16:29,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:16:29,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:16:29,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-27 23:16:29,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 23:16:29,814 INFO L175 Difference]: Start difference. First operand has 79 places, 67 transitions, 494 flow. Second operand 7 states and 91 transitions. [2024-06-27 23:16:29,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 78 transitions, 734 flow [2024-06-27 23:16:29,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 78 transitions, 698 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 23:16:29,822 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 561 flow [2024-06-27 23:16:29,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=561, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2024-06-27 23:16:29,822 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2024-06-27 23:16:29,822 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 561 flow [2024-06-27 23:16:29,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:29,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:29,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:29,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:16:29,824 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)] === [2024-06-27 23:16:29,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:29,824 INFO L85 PathProgramCache]: Analyzing trace with hash -9613159, now seen corresponding path program 4 times [2024-06-27 23:16:29,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:29,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484837250] [2024-06-27 23:16:29,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:29,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:30,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:30,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:30,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484837250] [2024-06-27 23:16:30,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484837250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:30,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:30,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:16:30,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837011060] [2024-06-27 23:16:30,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:30,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:16:30,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:30,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:16:30,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:16:30,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:16:30,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 561 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:30,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:30,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:16:30,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:30,864 INFO L124 PetriNetUnfolderBase]: 240/435 cut-off events. [2024-06-27 23:16:30,864 INFO L125 PetriNetUnfolderBase]: For 6764/6764 co-relation queries the response was YES. [2024-06-27 23:16:30,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2346 conditions, 435 events. 240/435 cut-off events. For 6764/6764 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1628 event pairs, 47 based on Foata normal form. 1/434 useless extension candidates. Maximal degree in co-relation 2305. Up to 390 conditions per place. [2024-06-27 23:16:30,867 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 65 selfloop transitions, 18 changer transitions 0/86 dead transitions. [2024-06-27 23:16:30,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 86 transitions, 795 flow [2024-06-27 23:16:30,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:16:30,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:16:30,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 95 transitions. [2024-06-27 23:16:30,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42410714285714285 [2024-06-27 23:16:30,869 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 561 flow. Second operand 7 states and 95 transitions. [2024-06-27 23:16:30,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 86 transitions, 795 flow [2024-06-27 23:16:30,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 86 transitions, 754 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 23:16:30,876 INFO L231 Difference]: Finished difference. Result has 87 places, 75 transitions, 603 flow [2024-06-27 23:16:30,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=603, PETRI_PLACES=87, PETRI_TRANSITIONS=75} [2024-06-27 23:16:30,876 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 56 predicate places. [2024-06-27 23:16:30,876 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 75 transitions, 603 flow [2024-06-27 23:16:30,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:30,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:30,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:30,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:16:30,877 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)] === [2024-06-27 23:16:30,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:30,877 INFO L85 PathProgramCache]: Analyzing trace with hash 955378939, now seen corresponding path program 5 times [2024-06-27 23:16:30,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:30,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56194490] [2024-06-27 23:16:30,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:30,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:31,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:31,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:31,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56194490] [2024-06-27 23:16:31,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56194490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:31,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:31,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:16:31,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145053481] [2024-06-27 23:16:31,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:31,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:16:31,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:31,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:16:31,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:16:31,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:16:31,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 75 transitions, 603 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:31,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:31,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:16:31,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:31,839 INFO L124 PetriNetUnfolderBase]: 243/440 cut-off events. [2024-06-27 23:16:31,839 INFO L125 PetriNetUnfolderBase]: For 7539/7539 co-relation queries the response was YES. [2024-06-27 23:16:31,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2439 conditions, 440 events. 243/440 cut-off events. For 7539/7539 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1661 event pairs, 47 based on Foata normal form. 1/439 useless extension candidates. Maximal degree in co-relation 2397. Up to 395 conditions per place. [2024-06-27 23:16:31,843 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 67 selfloop transitions, 19 changer transitions 0/89 dead transitions. [2024-06-27 23:16:31,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 89 transitions, 835 flow [2024-06-27 23:16:31,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:16:31,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:16:31,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 95 transitions. [2024-06-27 23:16:31,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42410714285714285 [2024-06-27 23:16:31,844 INFO L175 Difference]: Start difference. First operand has 87 places, 75 transitions, 603 flow. Second operand 7 states and 95 transitions. [2024-06-27 23:16:31,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 89 transitions, 835 flow [2024-06-27 23:16:31,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 89 transitions, 791 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 23:16:31,851 INFO L231 Difference]: Finished difference. Result has 91 places, 77 transitions, 634 flow [2024-06-27 23:16:31,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=634, PETRI_PLACES=91, PETRI_TRANSITIONS=77} [2024-06-27 23:16:31,852 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-27 23:16:31,852 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 77 transitions, 634 flow [2024-06-27 23:16:31,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:31,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:31,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:31,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 23:16:31,853 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)] === [2024-06-27 23:16:31,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:31,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1200121605, now seen corresponding path program 4 times [2024-06-27 23:16:31,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:31,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288651912] [2024-06-27 23:16:31,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:31,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:33,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:33,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:33,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288651912] [2024-06-27 23:16:33,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288651912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:33,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:33,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:16:33,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888850692] [2024-06-27 23:16:33,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:33,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:16:33,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:33,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:16:33,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:16:33,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:16:33,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 77 transitions, 634 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:33,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:33,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:16:33,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:33,537 INFO L124 PetriNetUnfolderBase]: 226/422 cut-off events. [2024-06-27 23:16:33,537 INFO L125 PetriNetUnfolderBase]: For 7980/7980 co-relation queries the response was YES. [2024-06-27 23:16:33,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2339 conditions, 422 events. 226/422 cut-off events. For 7980/7980 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1627 event pairs, 48 based on Foata normal form. 1/421 useless extension candidates. Maximal degree in co-relation 2297. Up to 363 conditions per place. [2024-06-27 23:16:33,541 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 58 selfloop transitions, 15 changer transitions 0/87 dead transitions. [2024-06-27 23:16:33,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 87 transitions, 806 flow [2024-06-27 23:16:33,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:16:33,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:16:33,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-27 23:16:33,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-27 23:16:33,542 INFO L175 Difference]: Start difference. First operand has 91 places, 77 transitions, 634 flow. Second operand 8 states and 106 transitions. [2024-06-27 23:16:33,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 87 transitions, 806 flow [2024-06-27 23:16:33,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 87 transitions, 737 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 23:16:33,549 INFO L231 Difference]: Finished difference. Result has 93 places, 77 transitions, 600 flow [2024-06-27 23:16:33,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=600, PETRI_PLACES=93, PETRI_TRANSITIONS=77} [2024-06-27 23:16:33,550 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-27 23:16:33,550 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 77 transitions, 600 flow [2024-06-27 23:16:33,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:33,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:33,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:33,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 23:16:33,551 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)] === [2024-06-27 23:16:33,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:33,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1200121853, now seen corresponding path program 6 times [2024-06-27 23:16:33,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:33,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607415614] [2024-06-27 23:16:33,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:33,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:34,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:34,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:34,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607415614] [2024-06-27 23:16:34,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607415614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:34,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:34,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:16:34,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790169926] [2024-06-27 23:16:34,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:34,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:16:34,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:34,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:16:34,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:16:34,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:16:34,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 77 transitions, 600 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:34,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:34,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:16:34,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:34,626 INFO L124 PetriNetUnfolderBase]: 239/434 cut-off events. [2024-06-27 23:16:34,626 INFO L125 PetriNetUnfolderBase]: For 8507/8507 co-relation queries the response was YES. [2024-06-27 23:16:34,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2409 conditions, 434 events. 239/434 cut-off events. For 8507/8507 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1626 event pairs, 49 based on Foata normal form. 1/433 useless extension candidates. Maximal degree in co-relation 2366. Up to 380 conditions per place. [2024-06-27 23:16:34,629 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 61 selfloop transitions, 23 changer transitions 0/87 dead transitions. [2024-06-27 23:16:34,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 87 transitions, 794 flow [2024-06-27 23:16:34,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:16:34,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:16:34,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 95 transitions. [2024-06-27 23:16:34,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42410714285714285 [2024-06-27 23:16:34,645 INFO L175 Difference]: Start difference. First operand has 93 places, 77 transitions, 600 flow. Second operand 7 states and 95 transitions. [2024-06-27 23:16:34,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 87 transitions, 794 flow [2024-06-27 23:16:34,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 87 transitions, 743 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 23:16:34,653 INFO L231 Difference]: Finished difference. Result has 93 places, 77 transitions, 600 flow [2024-06-27 23:16:34,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=600, PETRI_PLACES=93, PETRI_TRANSITIONS=77} [2024-06-27 23:16:34,654 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-27 23:16:34,654 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 77 transitions, 600 flow [2024-06-27 23:16:34,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:34,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:34,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:34,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 23:16:34,655 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)] === [2024-06-27 23:16:34,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:34,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1859921883, now seen corresponding path program 1 times [2024-06-27 23:16:34,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:34,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830632918] [2024-06-27 23:16:34,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:34,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:37,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:37,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:37,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830632918] [2024-06-27 23:16:37,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830632918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:37,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:37,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:16:37,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861534142] [2024-06-27 23:16:37,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:37,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:16:37,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:37,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:16:37,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:16:37,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:16:37,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 77 transitions, 600 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) [2024-06-27 23:16:37,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:37,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:16:37,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:38,365 INFO L124 PetriNetUnfolderBase]: 220/414 cut-off events. [2024-06-27 23:16:38,366 INFO L125 PetriNetUnfolderBase]: For 8988/8988 co-relation queries the response was YES. [2024-06-27 23:16:38,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2302 conditions, 414 events. 220/414 cut-off events. For 8988/8988 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1618 event pairs, 53 based on Foata normal form. 1/413 useless extension candidates. Maximal degree in co-relation 2259. Up to 363 conditions per place. [2024-06-27 23:16:38,369 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 58 selfloop transitions, 14 changer transitions 0/86 dead transitions. [2024-06-27 23:16:38,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 86 transitions, 772 flow [2024-06-27 23:16:38,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:16:38,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:16:38,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-27 23:16:38,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-27 23:16:38,372 INFO L175 Difference]: Start difference. First operand has 93 places, 77 transitions, 600 flow. Second operand 8 states and 103 transitions. [2024-06-27 23:16:38,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 86 transitions, 772 flow [2024-06-27 23:16:38,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 86 transitions, 687 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 23:16:38,381 INFO L231 Difference]: Finished difference. Result has 95 places, 79 transitions, 564 flow [2024-06-27 23:16:38,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=564, PETRI_PLACES=95, PETRI_TRANSITIONS=79} [2024-06-27 23:16:38,382 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2024-06-27 23:16:38,382 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 79 transitions, 564 flow [2024-06-27 23:16:38,382 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) [2024-06-27 23:16:38,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:38,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:38,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 23:16:38,383 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)] === [2024-06-27 23:16:38,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:38,383 INFO L85 PathProgramCache]: Analyzing trace with hash -285871016, now seen corresponding path program 1 times [2024-06-27 23:16:38,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:38,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205699918] [2024-06-27 23:16:38,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:38,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:39,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:39,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:39,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205699918] [2024-06-27 23:16:39,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205699918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:39,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:39,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:16:39,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143594546] [2024-06-27 23:16:39,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:39,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:16:39,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:39,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:16:39,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:16:39,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:16:39,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 79 transitions, 564 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:39,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:39,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:16:39,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:39,524 INFO L124 PetriNetUnfolderBase]: 244/444 cut-off events. [2024-06-27 23:16:39,524 INFO L125 PetriNetUnfolderBase]: For 9611/9611 co-relation queries the response was YES. [2024-06-27 23:16:39,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2477 conditions, 444 events. 244/444 cut-off events. For 9611/9611 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1708 event pairs, 50 based on Foata normal form. 1/440 useless extension candidates. Maximal degree in co-relation 2432. Up to 381 conditions per place. [2024-06-27 23:16:39,527 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 70 selfloop transitions, 22 changer transitions 0/95 dead transitions. [2024-06-27 23:16:39,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 95 transitions, 814 flow [2024-06-27 23:16:39,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:16:39,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:16:39,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-27 23:16:39,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-27 23:16:39,530 INFO L175 Difference]: Start difference. First operand has 95 places, 79 transitions, 564 flow. Second operand 8 states and 105 transitions. [2024-06-27 23:16:39,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 95 transitions, 814 flow [2024-06-27 23:16:39,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 95 transitions, 781 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 23:16:39,539 INFO L231 Difference]: Finished difference. Result has 98 places, 85 transitions, 630 flow [2024-06-27 23:16:39,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=630, PETRI_PLACES=98, PETRI_TRANSITIONS=85} [2024-06-27 23:16:39,540 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-27 23:16:39,540 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 85 transitions, 630 flow [2024-06-27 23:16:39,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:39,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:39,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:39,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 23:16:39,540 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)] === [2024-06-27 23:16:39,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:39,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1213208853, now seen corresponding path program 1 times [2024-06-27 23:16:39,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:39,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309371281] [2024-06-27 23:16:39,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:39,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:41,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:41,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:41,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309371281] [2024-06-27 23:16:41,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309371281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:41,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:41,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:16:41,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320546789] [2024-06-27 23:16:41,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:41,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:16:41,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:41,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:16:41,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:16:41,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:16:41,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 85 transitions, 630 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:41,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:41,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:16:41,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:41,511 INFO L124 PetriNetUnfolderBase]: 247/448 cut-off events. [2024-06-27 23:16:41,511 INFO L125 PetriNetUnfolderBase]: For 10441/10441 co-relation queries the response was YES. [2024-06-27 23:16:41,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2593 conditions, 448 events. 247/448 cut-off events. For 10441/10441 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1712 event pairs, 48 based on Foata normal form. 1/445 useless extension candidates. Maximal degree in co-relation 2546. Up to 400 conditions per place. [2024-06-27 23:16:41,515 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 72 selfloop transitions, 21 changer transitions 0/96 dead transitions. [2024-06-27 23:16:41,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 96 transitions, 860 flow [2024-06-27 23:16:41,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:16:41,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:16:41,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-27 23:16:41,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-27 23:16:41,516 INFO L175 Difference]: Start difference. First operand has 98 places, 85 transitions, 630 flow. Second operand 9 states and 109 transitions. [2024-06-27 23:16:41,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 96 transitions, 860 flow [2024-06-27 23:16:41,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 96 transitions, 825 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 23:16:41,527 INFO L231 Difference]: Finished difference. Result has 104 places, 87 transitions, 666 flow [2024-06-27 23:16:41,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=666, PETRI_PLACES=104, PETRI_TRANSITIONS=87} [2024-06-27 23:16:41,527 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 73 predicate places. [2024-06-27 23:16:41,528 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 87 transitions, 666 flow [2024-06-27 23:16:41,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:41,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:41,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:41,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 23:16:41,528 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)] === [2024-06-27 23:16:41,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:41,529 INFO L85 PathProgramCache]: Analyzing trace with hash -731141516, now seen corresponding path program 2 times [2024-06-27 23:16:41,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:41,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614059523] [2024-06-27 23:16:41,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:41,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:42,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:42,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:42,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614059523] [2024-06-27 23:16:42,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614059523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:42,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:42,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:16:42,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40889998] [2024-06-27 23:16:42,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:42,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:16:42,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:42,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:16:42,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:16:42,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:16:42,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 87 transitions, 666 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:42,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:42,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:16:42,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:42,783 INFO L124 PetriNetUnfolderBase]: 250/454 cut-off events. [2024-06-27 23:16:42,783 INFO L125 PetriNetUnfolderBase]: For 11439/11439 co-relation queries the response was YES. [2024-06-27 23:16:42,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2685 conditions, 454 events. 250/454 cut-off events. For 11439/11439 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1752 event pairs, 49 based on Foata normal form. 1/450 useless extension candidates. Maximal degree in co-relation 2635. Up to 385 conditions per place. [2024-06-27 23:16:42,790 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 70 selfloop transitions, 25 changer transitions 0/98 dead transitions. [2024-06-27 23:16:42,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 98 transitions, 902 flow [2024-06-27 23:16:42,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:16:42,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:16:42,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-27 23:16:42,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-27 23:16:42,791 INFO L175 Difference]: Start difference. First operand has 104 places, 87 transitions, 666 flow. Second operand 8 states and 106 transitions. [2024-06-27 23:16:42,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 98 transitions, 902 flow [2024-06-27 23:16:42,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 98 transitions, 847 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 23:16:42,805 INFO L231 Difference]: Finished difference. Result has 105 places, 89 transitions, 692 flow [2024-06-27 23:16:42,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=692, PETRI_PLACES=105, PETRI_TRANSITIONS=89} [2024-06-27 23:16:42,807 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2024-06-27 23:16:42,807 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 89 transitions, 692 flow [2024-06-27 23:16:42,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:42,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:42,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:42,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 23:16:42,807 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)] === [2024-06-27 23:16:42,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:42,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1213007260, now seen corresponding path program 3 times [2024-06-27 23:16:42,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:42,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595544545] [2024-06-27 23:16:42,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:42,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:43,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:43,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:43,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595544545] [2024-06-27 23:16:43,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595544545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:43,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:43,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:16:43,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708695040] [2024-06-27 23:16:43,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:43,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:16:43,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:43,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:16:43,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:16:43,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:16:43,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 89 transitions, 692 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:43,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:43,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:16:43,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:44,079 INFO L124 PetriNetUnfolderBase]: 253/459 cut-off events. [2024-06-27 23:16:44,079 INFO L125 PetriNetUnfolderBase]: For 12478/12478 co-relation queries the response was YES. [2024-06-27 23:16:44,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2779 conditions, 459 events. 253/459 cut-off events. For 12478/12478 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1785 event pairs, 49 based on Foata normal form. 1/455 useless extension candidates. Maximal degree in co-relation 2728. Up to 381 conditions per place. [2024-06-27 23:16:44,082 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 67 selfloop transitions, 29 changer transitions 0/99 dead transitions. [2024-06-27 23:16:44,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 99 transitions, 930 flow [2024-06-27 23:16:44,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:16:44,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:16:44,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-27 23:16:44,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41796875 [2024-06-27 23:16:44,083 INFO L175 Difference]: Start difference. First operand has 105 places, 89 transitions, 692 flow. Second operand 8 states and 107 transitions. [2024-06-27 23:16:44,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 99 transitions, 930 flow [2024-06-27 23:16:44,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 99 transitions, 865 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 23:16:44,094 INFO L231 Difference]: Finished difference. Result has 107 places, 91 transitions, 720 flow [2024-06-27 23:16:44,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=720, PETRI_PLACES=107, PETRI_TRANSITIONS=91} [2024-06-27 23:16:44,094 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 76 predicate places. [2024-06-27 23:16:44,095 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 91 transitions, 720 flow [2024-06-27 23:16:44,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:44,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:44,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:44,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 23:16:44,095 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)] === [2024-06-27 23:16:44,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:44,096 INFO L85 PathProgramCache]: Analyzing trace with hash -725577109, now seen corresponding path program 2 times [2024-06-27 23:16:44,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:44,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327722827] [2024-06-27 23:16:44,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:44,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:45,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:45,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:45,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327722827] [2024-06-27 23:16:45,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327722827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:45,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:45,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:16:45,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2332673] [2024-06-27 23:16:45,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:45,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:16:45,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:45,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:16:45,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:16:45,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:16:45,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 91 transitions, 720 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:45,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:45,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:16:45,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:45,729 INFO L124 PetriNetUnfolderBase]: 256/463 cut-off events. [2024-06-27 23:16:45,729 INFO L125 PetriNetUnfolderBase]: For 13435/13435 co-relation queries the response was YES. [2024-06-27 23:16:45,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2869 conditions, 463 events. 256/463 cut-off events. For 13435/13435 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1785 event pairs, 48 based on Foata normal form. 1/460 useless extension candidates. Maximal degree in co-relation 2817. Up to 409 conditions per place. [2024-06-27 23:16:45,732 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 74 selfloop transitions, 24 changer transitions 0/101 dead transitions. [2024-06-27 23:16:45,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 101 transitions, 960 flow [2024-06-27 23:16:45,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:16:45,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:16:45,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-27 23:16:45,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-27 23:16:45,733 INFO L175 Difference]: Start difference. First operand has 107 places, 91 transitions, 720 flow. Second operand 8 states and 103 transitions. [2024-06-27 23:16:45,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 101 transitions, 960 flow [2024-06-27 23:16:45,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 101 transitions, 883 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 23:16:45,745 INFO L231 Difference]: Finished difference. Result has 109 places, 93 transitions, 724 flow [2024-06-27 23:16:45,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=724, PETRI_PLACES=109, PETRI_TRANSITIONS=93} [2024-06-27 23:16:45,745 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-27 23:16:45,745 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 93 transitions, 724 flow [2024-06-27 23:16:45,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:45,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:45,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:45,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 23:16:45,746 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)] === [2024-06-27 23:16:45,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:45,746 INFO L85 PathProgramCache]: Analyzing trace with hash -725569390, now seen corresponding path program 1 times [2024-06-27 23:16:45,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:45,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413273380] [2024-06-27 23:16:45,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:45,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:47,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:47,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:47,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413273380] [2024-06-27 23:16:47,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413273380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:47,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:47,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:16:47,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363982989] [2024-06-27 23:16:47,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:47,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:16:47,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:47,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:16:47,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:16:47,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:16:47,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 93 transitions, 724 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) [2024-06-27 23:16:47,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:47,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:16:47,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:47,585 INFO L124 PetriNetUnfolderBase]: 242/452 cut-off events. [2024-06-27 23:16:47,585 INFO L125 PetriNetUnfolderBase]: For 14272/14272 co-relation queries the response was YES. [2024-06-27 23:16:47,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2811 conditions, 452 events. 242/452 cut-off events. For 14272/14272 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1808 event pairs, 44 based on Foata normal form. 1/451 useless extension candidates. Maximal degree in co-relation 2758. Up to 377 conditions per place. [2024-06-27 23:16:47,593 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 69 selfloop transitions, 19 changer transitions 0/104 dead transitions. [2024-06-27 23:16:47,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 104 transitions, 940 flow [2024-06-27 23:16:47,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:16:47,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:16:47,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-27 23:16:47,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-27 23:16:47,597 INFO L175 Difference]: Start difference. First operand has 109 places, 93 transitions, 724 flow. Second operand 7 states and 104 transitions. [2024-06-27 23:16:47,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 104 transitions, 940 flow [2024-06-27 23:16:47,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 104 transitions, 875 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 23:16:47,608 INFO L231 Difference]: Finished difference. Result has 110 places, 95 transitions, 725 flow [2024-06-27 23:16:47,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=659, 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=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=725, PETRI_PLACES=110, PETRI_TRANSITIONS=95} [2024-06-27 23:16:47,611 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 79 predicate places. [2024-06-27 23:16:47,611 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 95 transitions, 725 flow [2024-06-27 23:16:47,611 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) [2024-06-27 23:16:47,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:47,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:47,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 23:16:47,612 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)] === [2024-06-27 23:16:47,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:47,612 INFO L85 PathProgramCache]: Analyzing trace with hash -725569669, now seen corresponding path program 3 times [2024-06-27 23:16:47,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:47,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016745107] [2024-06-27 23:16:47,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:47,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:49,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:49,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:49,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016745107] [2024-06-27 23:16:49,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016745107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:49,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:49,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:16:49,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435342578] [2024-06-27 23:16:49,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:49,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:16:49,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:49,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:16:49,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:16:49,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:16:49,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 95 transitions, 725 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:49,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:49,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:16:49,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:49,301 INFO L124 PetriNetUnfolderBase]: 262/473 cut-off events. [2024-06-27 23:16:49,302 INFO L125 PetriNetUnfolderBase]: For 15130/15130 co-relation queries the response was YES. [2024-06-27 23:16:49,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3014 conditions, 473 events. 262/473 cut-off events. For 15130/15130 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1833 event pairs, 47 based on Foata normal form. 1/470 useless extension candidates. Maximal degree in co-relation 2961. Up to 410 conditions per place. [2024-06-27 23:16:49,305 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 73 selfloop transitions, 29 changer transitions 0/105 dead transitions. [2024-06-27 23:16:49,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 105 transitions, 977 flow [2024-06-27 23:16:49,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:16:49,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:16:49,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-27 23:16:49,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 23:16:49,307 INFO L175 Difference]: Start difference. First operand has 110 places, 95 transitions, 725 flow. Second operand 8 states and 104 transitions. [2024-06-27 23:16:49,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 105 transitions, 977 flow [2024-06-27 23:16:49,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 105 transitions, 929 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 23:16:49,321 INFO L231 Difference]: Finished difference. Result has 113 places, 97 transitions, 772 flow [2024-06-27 23:16:49,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=772, PETRI_PLACES=113, PETRI_TRANSITIONS=97} [2024-06-27 23:16:49,322 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 82 predicate places. [2024-06-27 23:16:49,322 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 97 transitions, 772 flow [2024-06-27 23:16:49,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:49,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:49,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:49,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 23:16:49,323 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)] === [2024-06-27 23:16:49,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:49,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1813469540, now seen corresponding path program 2 times [2024-06-27 23:16:49,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:49,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344549371] [2024-06-27 23:16:49,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:49,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:50,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:50,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:50,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344549371] [2024-06-27 23:16:50,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344549371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:50,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:50,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:16:50,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553232994] [2024-06-27 23:16:50,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:50,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:16:50,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:50,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:16:50,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:16:50,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-27 23:16:50,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 97 transitions, 772 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:50,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:50,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-27 23:16:50,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:50,924 INFO L124 PetriNetUnfolderBase]: 249/462 cut-off events. [2024-06-27 23:16:50,924 INFO L125 PetriNetUnfolderBase]: For 16177/16177 co-relation queries the response was YES. [2024-06-27 23:16:50,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2997 conditions, 462 events. 249/462 cut-off events. For 16177/16177 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1851 event pairs, 47 based on Foata normal form. 1/460 useless extension candidates. Maximal degree in co-relation 2943. Up to 383 conditions per place. [2024-06-27 23:16:50,928 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 69 selfloop transitions, 19 changer transitions 0/106 dead transitions. [2024-06-27 23:16:50,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 106 transitions, 986 flow [2024-06-27 23:16:50,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:16:50,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:16:50,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-27 23:16:50,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48660714285714285 [2024-06-27 23:16:50,930 INFO L175 Difference]: Start difference. First operand has 113 places, 97 transitions, 772 flow. Second operand 7 states and 109 transitions. [2024-06-27 23:16:50,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 106 transitions, 986 flow [2024-06-27 23:16:50,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 106 transitions, 907 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 23:16:50,960 INFO L231 Difference]: Finished difference. Result has 114 places, 99 transitions, 762 flow [2024-06-27 23:16:50,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=762, PETRI_PLACES=114, PETRI_TRANSITIONS=99} [2024-06-27 23:16:50,961 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-27 23:16:50,961 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 99 transitions, 762 flow [2024-06-27 23:16:50,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:50,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:50,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:50,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 23:16:50,961 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)] === [2024-06-27 23:16:50,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:50,962 INFO L85 PathProgramCache]: Analyzing trace with hash -524480419, now seen corresponding path program 4 times [2024-06-27 23:16:50,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:50,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427926022] [2024-06-27 23:16:50,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:50,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:52,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:52,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:52,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427926022] [2024-06-27 23:16:52,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427926022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:52,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:52,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:16:52,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700734193] [2024-06-27 23:16:52,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:52,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:16:52,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:52,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:16:52,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:16:52,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:16:52,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 99 transitions, 762 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:52,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:52,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:16:52,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:52,799 INFO L124 PetriNetUnfolderBase]: 273/491 cut-off events. [2024-06-27 23:16:52,800 INFO L125 PetriNetUnfolderBase]: For 17795/17795 co-relation queries the response was YES. [2024-06-27 23:16:52,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3276 conditions, 491 events. 273/491 cut-off events. For 17795/17795 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1933 event pairs, 51 based on Foata normal form. 1/488 useless extension candidates. Maximal degree in co-relation 3221. Up to 409 conditions per place. [2024-06-27 23:16:52,803 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 70 selfloop transitions, 38 changer transitions 0/111 dead transitions. [2024-06-27 23:16:52,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 111 transitions, 1122 flow [2024-06-27 23:16:52,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:16:52,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:16:52,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-27 23:16:52,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-27 23:16:52,804 INFO L175 Difference]: Start difference. First operand has 114 places, 99 transitions, 762 flow. Second operand 8 states and 105 transitions. [2024-06-27 23:16:52,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 111 transitions, 1122 flow [2024-06-27 23:16:52,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 111 transitions, 1069 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 23:16:52,822 INFO L231 Difference]: Finished difference. Result has 117 places, 103 transitions, 858 flow [2024-06-27 23:16:52,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=858, PETRI_PLACES=117, PETRI_TRANSITIONS=103} [2024-06-27 23:16:52,822 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 86 predicate places. [2024-06-27 23:16:52,822 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 103 transitions, 858 flow [2024-06-27 23:16:52,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:52,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:52,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:52,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 23:16:52,823 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)] === [2024-06-27 23:16:52,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:52,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1813461604, now seen corresponding path program 4 times [2024-06-27 23:16:52,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:52,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855757664] [2024-06-27 23:16:52,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:52,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:53,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:53,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:53,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855757664] [2024-06-27 23:16:53,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855757664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:53,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:53,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:16:53,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879864010] [2024-06-27 23:16:53,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:53,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:16:53,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:53,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:16:53,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:16:53,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:16:53,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 103 transitions, 858 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:53,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:53,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:16:53,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:54,144 INFO L124 PetriNetUnfolderBase]: 276/497 cut-off events. [2024-06-27 23:16:54,144 INFO L125 PetriNetUnfolderBase]: For 19181/19181 co-relation queries the response was YES. [2024-06-27 23:16:54,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3405 conditions, 497 events. 276/497 cut-off events. For 19181/19181 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1951 event pairs, 54 based on Foata normal form. 1/493 useless extension candidates. Maximal degree in co-relation 3348. Up to 385 conditions per place. [2024-06-27 23:16:54,147 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 72 selfloop transitions, 40 changer transitions 0/115 dead transitions. [2024-06-27 23:16:54,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 115 transitions, 1224 flow [2024-06-27 23:16:54,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:16:54,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:16:54,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-27 23:16:54,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-27 23:16:54,149 INFO L175 Difference]: Start difference. First operand has 117 places, 103 transitions, 858 flow. Second operand 8 states and 106 transitions. [2024-06-27 23:16:54,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 115 transitions, 1224 flow [2024-06-27 23:16:54,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 115 transitions, 1151 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 23:16:54,166 INFO L231 Difference]: Finished difference. Result has 121 places, 107 transitions, 934 flow [2024-06-27 23:16:54,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=934, PETRI_PLACES=121, PETRI_TRANSITIONS=107} [2024-06-27 23:16:54,167 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-27 23:16:54,167 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 107 transitions, 934 flow [2024-06-27 23:16:54,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:54,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:54,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:54,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 23:16:54,168 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)] === [2024-06-27 23:16:54,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:54,168 INFO L85 PathProgramCache]: Analyzing trace with hash -26189669, now seen corresponding path program 5 times [2024-06-27 23:16:54,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:54,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725886698] [2024-06-27 23:16:54,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:54,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:55,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:55,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:55,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725886698] [2024-06-27 23:16:55,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725886698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:55,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:55,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:16:55,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853533096] [2024-06-27 23:16:55,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:55,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:16:55,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:55,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:16:55,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:16:55,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:16:55,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 107 transitions, 934 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:55,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:55,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:16:55,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:55,789 INFO L124 PetriNetUnfolderBase]: 274/493 cut-off events. [2024-06-27 23:16:55,789 INFO L125 PetriNetUnfolderBase]: For 19816/19816 co-relation queries the response was YES. [2024-06-27 23:16:55,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3444 conditions, 493 events. 274/493 cut-off events. For 19816/19816 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1945 event pairs, 51 based on Foata normal form. 1/490 useless extension candidates. Maximal degree in co-relation 3385. Up to 418 conditions per place. [2024-06-27 23:16:55,792 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 76 selfloop transitions, 35 changer transitions 0/114 dead transitions. [2024-06-27 23:16:55,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 114 transitions, 1172 flow [2024-06-27 23:16:55,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:16:55,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:16:55,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-27 23:16:55,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-27 23:16:55,794 INFO L175 Difference]: Start difference. First operand has 121 places, 107 transitions, 934 flow. Second operand 8 states and 102 transitions. [2024-06-27 23:16:55,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 114 transitions, 1172 flow [2024-06-27 23:16:55,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 114 transitions, 1096 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-27 23:16:55,813 INFO L231 Difference]: Finished difference. Result has 125 places, 107 transitions, 933 flow [2024-06-27 23:16:55,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=933, PETRI_PLACES=125, PETRI_TRANSITIONS=107} [2024-06-27 23:16:55,814 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-27 23:16:55,814 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 107 transitions, 933 flow [2024-06-27 23:16:55,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:55,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:55,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:55,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 23:16:55,815 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)] === [2024-06-27 23:16:55,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:55,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1822666310, now seen corresponding path program 3 times [2024-06-27 23:16:55,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:55,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433083956] [2024-06-27 23:16:55,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:55,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:57,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:57,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:57,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433083956] [2024-06-27 23:16:57,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433083956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:57,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:57,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:16:57,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525052371] [2024-06-27 23:16:57,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:57,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:16:57,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:57,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:16:57,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:16:57,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:16:57,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 107 transitions, 933 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) [2024-06-27 23:16:57,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:57,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:16:57,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:57,693 INFO L124 PetriNetUnfolderBase]: 261/482 cut-off events. [2024-06-27 23:16:57,693 INFO L125 PetriNetUnfolderBase]: For 20686/20686 co-relation queries the response was YES. [2024-06-27 23:16:57,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3392 conditions, 482 events. 261/482 cut-off events. For 20686/20686 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1950 event pairs, 47 based on Foata normal form. 1/480 useless extension candidates. Maximal degree in co-relation 3331. Up to 372 conditions per place. [2024-06-27 23:16:57,696 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 70 selfloop transitions, 30 changer transitions 0/119 dead transitions. [2024-06-27 23:16:57,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 119 transitions, 1271 flow [2024-06-27 23:16:57,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:16:57,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:16:57,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2024-06-27 23:16:57,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47767857142857145 [2024-06-27 23:16:57,698 INFO L175 Difference]: Start difference. First operand has 125 places, 107 transitions, 933 flow. Second operand 7 states and 107 transitions. [2024-06-27 23:16:57,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 119 transitions, 1271 flow [2024-06-27 23:16:57,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 119 transitions, 1194 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 23:16:57,719 INFO L231 Difference]: Finished difference. Result has 125 places, 111 transitions, 977 flow [2024-06-27 23:16:57,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=977, PETRI_PLACES=125, PETRI_TRANSITIONS=111} [2024-06-27 23:16:57,720 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-27 23:16:57,720 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 111 transitions, 977 flow [2024-06-27 23:16:57,720 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) [2024-06-27 23:16:57,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:57,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:57,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 23:16:57,720 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)] === [2024-06-27 23:16:57,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:57,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1822666031, now seen corresponding path program 6 times [2024-06-27 23:16:57,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:57,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446113565] [2024-06-27 23:16:57,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:57,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:59,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:59,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:59,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446113565] [2024-06-27 23:16:59,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446113565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:59,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:59,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:16:59,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396266669] [2024-06-27 23:16:59,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:59,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:16:59,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:59,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:16:59,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:16:59,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:16:59,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 111 transitions, 977 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:59,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:59,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:16:59,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:59,376 INFO L124 PetriNetUnfolderBase]: 280/503 cut-off events. [2024-06-27 23:16:59,376 INFO L125 PetriNetUnfolderBase]: For 22194/22194 co-relation queries the response was YES. [2024-06-27 23:16:59,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3622 conditions, 503 events. 280/503 cut-off events. For 22194/22194 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1990 event pairs, 51 based on Foata normal form. 1/500 useless extension candidates. Maximal degree in co-relation 3561. Up to 388 conditions per place. [2024-06-27 23:16:59,379 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 68 selfloop transitions, 52 changer transitions 0/123 dead transitions. [2024-06-27 23:16:59,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 123 transitions, 1377 flow [2024-06-27 23:16:59,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:16:59,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:16:59,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-27 23:16:59,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-27 23:16:59,381 INFO L175 Difference]: Start difference. First operand has 125 places, 111 transitions, 977 flow. Second operand 8 states and 105 transitions. [2024-06-27 23:16:59,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 123 transitions, 1377 flow [2024-06-27 23:16:59,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 123 transitions, 1322 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 23:16:59,403 INFO L231 Difference]: Finished difference. Result has 130 places, 115 transitions, 1107 flow [2024-06-27 23:16:59,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1107, PETRI_PLACES=130, PETRI_TRANSITIONS=115} [2024-06-27 23:16:59,404 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 99 predicate places. [2024-06-27 23:16:59,404 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 115 transitions, 1107 flow [2024-06-27 23:16:59,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:59,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:59,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:16:59,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 23:16:59,405 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)] === [2024-06-27 23:16:59,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:59,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1822992740, now seen corresponding path program 4 times [2024-06-27 23:16:59,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:59,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292042538] [2024-06-27 23:16:59,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:59,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:01,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:01,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:01,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292042538] [2024-06-27 23:17:01,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292042538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:01,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:01,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:17:01,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161111772] [2024-06-27 23:17:01,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:01,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:17:01,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:01,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:17:01,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:17:01,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:17:01,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 115 transitions, 1107 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) [2024-06-27 23:17:01,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:01,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:17:01,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:02,285 INFO L124 PetriNetUnfolderBase]: 262/485 cut-off events. [2024-06-27 23:17:02,285 INFO L125 PetriNetUnfolderBase]: For 22677/22677 co-relation queries the response was YES. [2024-06-27 23:17:02,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3551 conditions, 485 events. 262/485 cut-off events. For 22677/22677 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1971 event pairs, 52 based on Foata normal form. 1/484 useless extension candidates. Maximal degree in co-relation 3487. Up to 417 conditions per place. [2024-06-27 23:17:02,289 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 87 selfloop transitions, 14 changer transitions 0/122 dead transitions. [2024-06-27 23:17:02,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 122 transitions, 1325 flow [2024-06-27 23:17:02,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:17:02,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:17:02,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-27 23:17:02,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-27 23:17:02,290 INFO L175 Difference]: Start difference. First operand has 130 places, 115 transitions, 1107 flow. Second operand 8 states and 103 transitions. [2024-06-27 23:17:02,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 122 transitions, 1325 flow [2024-06-27 23:17:02,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 122 transitions, 1225 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-27 23:17:02,319 INFO L231 Difference]: Finished difference. Result has 134 places, 115 transitions, 1040 flow [2024-06-27 23:17:02,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1040, PETRI_PLACES=134, PETRI_TRANSITIONS=115} [2024-06-27 23:17:02,320 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 103 predicate places. [2024-06-27 23:17:02,320 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 115 transitions, 1040 flow [2024-06-27 23:17:02,320 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) [2024-06-27 23:17:02,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:02,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:02,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 23:17:02,321 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)] === [2024-06-27 23:17:02,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:02,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1699002998, now seen corresponding path program 5 times [2024-06-27 23:17:02,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:02,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081821073] [2024-06-27 23:17:02,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:02,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:03,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:03,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:03,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081821073] [2024-06-27 23:17:03,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081821073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:03,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:03,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:17:03,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519278301] [2024-06-27 23:17:03,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:03,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:17:03,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:03,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:17:03,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:17:03,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:17:03,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 115 transitions, 1040 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:03,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:03,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:17:03,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:03,283 INFO L124 PetriNetUnfolderBase]: 285/513 cut-off events. [2024-06-27 23:17:03,284 INFO L125 PetriNetUnfolderBase]: For 23836/23836 co-relation queries the response was YES. [2024-06-27 23:17:03,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3737 conditions, 513 events. 285/513 cut-off events. For 23836/23836 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2038 event pairs, 44 based on Foata normal form. 1/512 useless extension candidates. Maximal degree in co-relation 3671. Up to 448 conditions per place. [2024-06-27 23:17:03,287 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 105 selfloop transitions, 26 changer transitions 0/134 dead transitions. [2024-06-27 23:17:03,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 134 transitions, 1390 flow [2024-06-27 23:17:03,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:17:03,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:17:03,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-27 23:17:03,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-27 23:17:03,289 INFO L175 Difference]: Start difference. First operand has 134 places, 115 transitions, 1040 flow. Second operand 8 states and 108 transitions. [2024-06-27 23:17:03,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 134 transitions, 1390 flow [2024-06-27 23:17:03,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 134 transitions, 1357 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 23:17:03,321 INFO L231 Difference]: Finished difference. Result has 135 places, 119 transitions, 1116 flow [2024-06-27 23:17:03,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1116, PETRI_PLACES=135, PETRI_TRANSITIONS=119} [2024-06-27 23:17:03,322 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-27 23:17:03,322 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 119 transitions, 1116 flow [2024-06-27 23:17:03,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:03,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:03,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:03,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 23:17:03,323 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)] === [2024-06-27 23:17:03,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:03,323 INFO L85 PathProgramCache]: Analyzing trace with hash -422165434, now seen corresponding path program 6 times [2024-06-27 23:17:03,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:03,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888162526] [2024-06-27 23:17:03,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:03,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:04,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:04,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:04,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888162526] [2024-06-27 23:17:04,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888162526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:04,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:04,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:17:04,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65800253] [2024-06-27 23:17:04,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:04,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:17:04,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:04,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:17:04,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:17:04,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:17:04,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 119 transitions, 1116 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:04,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:04,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:17:04,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:04,368 INFO L124 PetriNetUnfolderBase]: 292/525 cut-off events. [2024-06-27 23:17:04,368 INFO L125 PetriNetUnfolderBase]: For 25335/25335 co-relation queries the response was YES. [2024-06-27 23:17:04,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3889 conditions, 525 events. 292/525 cut-off events. For 25335/25335 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2116 event pairs, 45 based on Foata normal form. 1/524 useless extension candidates. Maximal degree in co-relation 3823. Up to 458 conditions per place. [2024-06-27 23:17:04,372 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 108 selfloop transitions, 26 changer transitions 0/137 dead transitions. [2024-06-27 23:17:04,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 137 transitions, 1478 flow [2024-06-27 23:17:04,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:17:04,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:17:04,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-27 23:17:04,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-27 23:17:04,374 INFO L175 Difference]: Start difference. First operand has 135 places, 119 transitions, 1116 flow. Second operand 8 states and 108 transitions. [2024-06-27 23:17:04,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 137 transitions, 1478 flow [2024-06-27 23:17:04,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 137 transitions, 1394 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 23:17:04,412 INFO L231 Difference]: Finished difference. Result has 137 places, 123 transitions, 1149 flow [2024-06-27 23:17:04,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1149, PETRI_PLACES=137, PETRI_TRANSITIONS=123} [2024-06-27 23:17:04,413 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 106 predicate places. [2024-06-27 23:17:04,413 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 123 transitions, 1149 flow [2024-06-27 23:17:04,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:04,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:04,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:04,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 23:17:04,414 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)] === [2024-06-27 23:17:04,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:04,414 INFO L85 PathProgramCache]: Analyzing trace with hash -417549844, now seen corresponding path program 7 times [2024-06-27 23:17:04,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:04,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706805314] [2024-06-27 23:17:04,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:04,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:05,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:05,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:05,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706805314] [2024-06-27 23:17:05,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706805314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:05,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:05,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:17:05,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69839678] [2024-06-27 23:17:05,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:05,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:17:05,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:05,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:17:05,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:17:05,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:17:05,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 123 transitions, 1149 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:05,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:05,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:17:05,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:05,501 INFO L124 PetriNetUnfolderBase]: 295/531 cut-off events. [2024-06-27 23:17:05,502 INFO L125 PetriNetUnfolderBase]: For 26758/26758 co-relation queries the response was YES. [2024-06-27 23:17:05,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3946 conditions, 531 events. 295/531 cut-off events. For 26758/26758 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2136 event pairs, 45 based on Foata normal form. 1/530 useless extension candidates. Maximal degree in co-relation 3880. Up to 454 conditions per place. [2024-06-27 23:17:05,505 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 104 selfloop transitions, 31 changer transitions 0/138 dead transitions. [2024-06-27 23:17:05,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 138 transitions, 1495 flow [2024-06-27 23:17:05,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:17:05,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:17:05,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-27 23:17:05,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-27 23:17:05,508 INFO L175 Difference]: Start difference. First operand has 137 places, 123 transitions, 1149 flow. Second operand 8 states and 108 transitions. [2024-06-27 23:17:05,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 138 transitions, 1495 flow [2024-06-27 23:17:05,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 138 transitions, 1431 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 23:17:05,541 INFO L231 Difference]: Finished difference. Result has 141 places, 125 transitions, 1198 flow [2024-06-27 23:17:05,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1198, PETRI_PLACES=141, PETRI_TRANSITIONS=125} [2024-06-27 23:17:05,542 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-27 23:17:05,542 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 125 transitions, 1198 flow [2024-06-27 23:17:05,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:05,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:05,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:05,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 23:17:05,543 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)] === [2024-06-27 23:17:05,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:05,543 INFO L85 PathProgramCache]: Analyzing trace with hash -417517077, now seen corresponding path program 7 times [2024-06-27 23:17:05,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:05,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838845212] [2024-06-27 23:17:05,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:05,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:06,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:06,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:06,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838845212] [2024-06-27 23:17:06,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838845212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:06,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:06,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:17:06,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226117541] [2024-06-27 23:17:06,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:06,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:17:06,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:06,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:17:06,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:17:06,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:17:06,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 125 transitions, 1198 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:06,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:06,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:17:06,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:06,919 INFO L124 PetriNetUnfolderBase]: 298/535 cut-off events. [2024-06-27 23:17:06,919 INFO L125 PetriNetUnfolderBase]: For 28136/28136 co-relation queries the response was YES. [2024-06-27 23:17:06,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4026 conditions, 535 events. 298/535 cut-off events. For 28136/28136 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2155 event pairs, 45 based on Foata normal form. 1/534 useless extension candidates. Maximal degree in co-relation 3959. Up to 486 conditions per place. [2024-06-27 23:17:06,929 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 115 selfloop transitions, 22 changer transitions 0/140 dead transitions. [2024-06-27 23:17:06,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 140 transitions, 1544 flow [2024-06-27 23:17:06,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:17:06,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:17:06,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 23:17:06,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 23:17:06,931 INFO L175 Difference]: Start difference. First operand has 141 places, 125 transitions, 1198 flow. Second operand 9 states and 112 transitions. [2024-06-27 23:17:06,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 140 transitions, 1544 flow [2024-06-27 23:17:06,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 140 transitions, 1451 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 23:17:06,966 INFO L231 Difference]: Finished difference. Result has 144 places, 127 transitions, 1196 flow [2024-06-27 23:17:06,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1196, PETRI_PLACES=144, PETRI_TRANSITIONS=127} [2024-06-27 23:17:06,967 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-27 23:17:06,967 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 127 transitions, 1196 flow [2024-06-27 23:17:06,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:06,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:06,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:06,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 23:17:06,968 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)] === [2024-06-27 23:17:06,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:06,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1445215110, now seen corresponding path program 8 times [2024-06-27 23:17:06,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:06,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258650657] [2024-06-27 23:17:06,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:06,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:07,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:07,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:07,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258650657] [2024-06-27 23:17:07,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258650657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:07,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:07,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:17:07,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531647270] [2024-06-27 23:17:07,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:07,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:17:07,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:07,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:17:07,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:17:07,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:17:07,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 127 transitions, 1196 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:07,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:07,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:17:07,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:08,202 INFO L124 PetriNetUnfolderBase]: 301/540 cut-off events. [2024-06-27 23:17:08,202 INFO L125 PetriNetUnfolderBase]: For 29448/29448 co-relation queries the response was YES. [2024-06-27 23:17:08,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4072 conditions, 540 events. 301/540 cut-off events. For 29448/29448 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2170 event pairs, 45 based on Foata normal form. 1/539 useless extension candidates. Maximal degree in co-relation 4003. Up to 473 conditions per place. [2024-06-27 23:17:08,206 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 114 selfloop transitions, 25 changer transitions 0/142 dead transitions. [2024-06-27 23:17:08,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 142 transitions, 1556 flow [2024-06-27 23:17:08,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:17:08,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:17:08,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-27 23:17:08,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-27 23:17:08,207 INFO L175 Difference]: Start difference. First operand has 144 places, 127 transitions, 1196 flow. Second operand 8 states and 108 transitions. [2024-06-27 23:17:08,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 142 transitions, 1556 flow [2024-06-27 23:17:08,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 142 transitions, 1485 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 23:17:08,243 INFO L231 Difference]: Finished difference. Result has 145 places, 129 transitions, 1230 flow [2024-06-27 23:17:08,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1125, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1230, PETRI_PLACES=145, PETRI_TRANSITIONS=129} [2024-06-27 23:17:08,245 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 114 predicate places. [2024-06-27 23:17:08,245 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 129 transitions, 1230 flow [2024-06-27 23:17:08,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:08,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:08,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:08,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 23:17:08,246 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)] === [2024-06-27 23:17:08,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:08,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1445365057, now seen corresponding path program 8 times [2024-06-27 23:17:08,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:08,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213302060] [2024-06-27 23:17:08,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:08,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:09,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:09,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:09,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213302060] [2024-06-27 23:17:09,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213302060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:09,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:09,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:17:09,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665809427] [2024-06-27 23:17:09,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:09,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:17:09,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:09,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:17:09,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:17:09,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:17:09,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 129 transitions, 1230 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:09,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:09,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:17:09,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:09,692 INFO L124 PetriNetUnfolderBase]: 304/545 cut-off events. [2024-06-27 23:17:09,693 INFO L125 PetriNetUnfolderBase]: For 31009/31009 co-relation queries the response was YES. [2024-06-27 23:17:09,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4143 conditions, 545 events. 304/545 cut-off events. For 31009/31009 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2206 event pairs, 44 based on Foata normal form. 1/544 useless extension candidates. Maximal degree in co-relation 4074. Up to 496 conditions per place. [2024-06-27 23:17:09,696 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 119 selfloop transitions, 21 changer transitions 0/143 dead transitions. [2024-06-27 23:17:09,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 143 transitions, 1584 flow [2024-06-27 23:17:09,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:17:09,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:17:09,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 23:17:09,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 23:17:09,706 INFO L175 Difference]: Start difference. First operand has 145 places, 129 transitions, 1230 flow. Second operand 9 states and 112 transitions. [2024-06-27 23:17:09,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 143 transitions, 1584 flow [2024-06-27 23:17:09,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 143 transitions, 1495 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 23:17:09,747 INFO L231 Difference]: Finished difference. Result has 149 places, 131 transitions, 1234 flow [2024-06-27 23:17:09,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1234, PETRI_PLACES=149, PETRI_TRANSITIONS=131} [2024-06-27 23:17:09,747 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2024-06-27 23:17:09,748 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 131 transitions, 1234 flow [2024-06-27 23:17:09,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:09,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:09,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:09,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 23:17:09,748 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)] === [2024-06-27 23:17:09,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:09,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1445364840, now seen corresponding path program 9 times [2024-06-27 23:17:09,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:09,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636583043] [2024-06-27 23:17:09,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:09,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:10,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:10,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:10,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636583043] [2024-06-27 23:17:10,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636583043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:10,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:10,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:17:10,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264322229] [2024-06-27 23:17:10,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:10,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:17:10,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:10,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:17:10,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:17:10,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:17:10,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 131 transitions, 1234 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:10,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:10,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:17:10,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:10,880 INFO L124 PetriNetUnfolderBase]: 307/550 cut-off events. [2024-06-27 23:17:10,880 INFO L125 PetriNetUnfolderBase]: For 32487/32487 co-relation queries the response was YES. [2024-06-27 23:17:10,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4201 conditions, 550 events. 307/550 cut-off events. For 32487/32487 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2240 event pairs, 45 based on Foata normal form. 1/549 useless extension candidates. Maximal degree in co-relation 4131. Up to 477 conditions per place. [2024-06-27 23:17:10,884 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 114 selfloop transitions, 28 changer transitions 0/145 dead transitions. [2024-06-27 23:17:10,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 145 transitions, 1600 flow [2024-06-27 23:17:10,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:17:10,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:17:10,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-27 23:17:10,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42578125 [2024-06-27 23:17:10,885 INFO L175 Difference]: Start difference. First operand has 149 places, 131 transitions, 1234 flow. Second operand 8 states and 109 transitions. [2024-06-27 23:17:10,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 145 transitions, 1600 flow [2024-06-27 23:17:10,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 145 transitions, 1527 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 23:17:10,922 INFO L231 Difference]: Finished difference. Result has 150 places, 133 transitions, 1276 flow [2024-06-27 23:17:10,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1276, PETRI_PLACES=150, PETRI_TRANSITIONS=133} [2024-06-27 23:17:10,923 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 119 predicate places. [2024-06-27 23:17:10,923 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 133 transitions, 1276 flow [2024-06-27 23:17:10,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:10,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:10,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:10,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 23:17:10,924 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)] === [2024-06-27 23:17:10,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:10,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1450936687, now seen corresponding path program 9 times [2024-06-27 23:17:10,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:10,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407283914] [2024-06-27 23:17:10,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:10,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:12,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:12,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:12,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407283914] [2024-06-27 23:17:12,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407283914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:12,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:12,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:17:12,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753278667] [2024-06-27 23:17:12,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:12,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:17:12,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:12,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:17:12,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:17:12,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:17:12,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 133 transitions, 1276 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:12,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:12,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:17:12,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:12,631 INFO L124 PetriNetUnfolderBase]: 310/556 cut-off events. [2024-06-27 23:17:12,631 INFO L125 PetriNetUnfolderBase]: For 34108/34108 co-relation queries the response was YES. [2024-06-27 23:17:12,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4282 conditions, 556 events. 310/556 cut-off events. For 34108/34108 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2276 event pairs, 46 based on Foata normal form. 1/555 useless extension candidates. Maximal degree in co-relation 4212. Up to 484 conditions per place. [2024-06-27 23:17:12,635 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 111 selfloop transitions, 33 changer transitions 0/147 dead transitions. [2024-06-27 23:17:12,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 147 transitions, 1728 flow [2024-06-27 23:17:12,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:17:12,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:17:12,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 23:17:12,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-27 23:17:12,653 INFO L175 Difference]: Start difference. First operand has 150 places, 133 transitions, 1276 flow. Second operand 9 states and 114 transitions. [2024-06-27 23:17:12,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 147 transitions, 1728 flow [2024-06-27 23:17:12,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 147 transitions, 1633 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 23:17:12,695 INFO L231 Difference]: Finished difference. Result has 153 places, 135 transitions, 1298 flow [2024-06-27 23:17:12,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1298, PETRI_PLACES=153, PETRI_TRANSITIONS=135} [2024-06-27 23:17:12,695 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 122 predicate places. [2024-06-27 23:17:12,695 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 135 transitions, 1298 flow [2024-06-27 23:17:12,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:12,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:12,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:12,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 23:17:12,696 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)] === [2024-06-27 23:17:12,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:12,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1450929030, now seen corresponding path program 10 times [2024-06-27 23:17:12,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:12,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035629959] [2024-06-27 23:17:12,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:12,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:13,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:13,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:13,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035629959] [2024-06-27 23:17:13,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035629959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:13,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:13,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:17:13,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354857388] [2024-06-27 23:17:13,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:13,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:17:13,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:13,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:17:13,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:17:13,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:17:13,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 135 transitions, 1298 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:13,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:13,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:17:13,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:13,902 INFO L124 PetriNetUnfolderBase]: 308/552 cut-off events. [2024-06-27 23:17:13,902 INFO L125 PetriNetUnfolderBase]: For 34314/34314 co-relation queries the response was YES. [2024-06-27 23:17:13,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4214 conditions, 552 events. 308/552 cut-off events. For 34314/34314 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2234 event pairs, 49 based on Foata normal form. 1/551 useless extension candidates. Maximal degree in co-relation 4142. Up to 458 conditions per place. [2024-06-27 23:17:13,905 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 104 selfloop transitions, 39 changer transitions 0/146 dead transitions. [2024-06-27 23:17:13,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 146 transitions, 1612 flow [2024-06-27 23:17:13,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:17:13,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:17:13,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-27 23:17:13,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-27 23:17:13,906 INFO L175 Difference]: Start difference. First operand has 153 places, 135 transitions, 1298 flow. Second operand 8 states and 108 transitions. [2024-06-27 23:17:13,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 146 transitions, 1612 flow [2024-06-27 23:17:13,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 146 transitions, 1460 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 23:17:13,952 INFO L231 Difference]: Finished difference. Result has 153 places, 135 transitions, 1229 flow [2024-06-27 23:17:13,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1146, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1229, PETRI_PLACES=153, PETRI_TRANSITIONS=135} [2024-06-27 23:17:13,952 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 122 predicate places. [2024-06-27 23:17:13,952 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 135 transitions, 1229 flow [2024-06-27 23:17:13,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:13,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:13,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:13,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 23:17:13,953 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)] === [2024-06-27 23:17:13,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:13,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1450929247, now seen corresponding path program 10 times [2024-06-27 23:17:13,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:13,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374405711] [2024-06-27 23:17:13,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:13,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:15,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:15,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:15,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374405711] [2024-06-27 23:17:15,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374405711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:15,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:15,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:15,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937473772] [2024-06-27 23:17:15,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:15,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:15,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:15,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:15,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:15,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:17:15,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 135 transitions, 1229 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:15,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:15,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:17:15,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:15,645 INFO L124 PetriNetUnfolderBase]: 306/549 cut-off events. [2024-06-27 23:17:15,645 INFO L125 PetriNetUnfolderBase]: For 34575/34575 co-relation queries the response was YES. [2024-06-27 23:17:15,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4086 conditions, 549 events. 306/549 cut-off events. For 34575/34575 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2243 event pairs, 46 based on Foata normal form. 1/548 useless extension candidates. Maximal degree in co-relation 4015. Up to 491 conditions per place. [2024-06-27 23:17:15,649 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 117 selfloop transitions, 26 changer transitions 0/146 dead transitions. [2024-06-27 23:17:15,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 146 transitions, 1543 flow [2024-06-27 23:17:15,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:17:15,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:17:15,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 23:17:15,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 23:17:15,650 INFO L175 Difference]: Start difference. First operand has 153 places, 135 transitions, 1229 flow. Second operand 9 states and 112 transitions. [2024-06-27 23:17:15,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 146 transitions, 1543 flow [2024-06-27 23:17:15,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 146 transitions, 1363 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-27 23:17:15,700 INFO L231 Difference]: Finished difference. Result has 155 places, 135 transitions, 1106 flow [2024-06-27 23:17:15,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1106, PETRI_PLACES=155, PETRI_TRANSITIONS=135} [2024-06-27 23:17:15,701 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 124 predicate places. [2024-06-27 23:17:15,701 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 135 transitions, 1106 flow [2024-06-27 23:17:15,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:15,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:15,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:15,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 23:17:15,702 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)] === [2024-06-27 23:17:15,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:15,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1823004644, now seen corresponding path program 1 times [2024-06-27 23:17:15,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:15,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910110873] [2024-06-27 23:17:15,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:15,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:19,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:19,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:19,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910110873] [2024-06-27 23:17:19,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910110873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:19,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:19,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:19,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452846515] [2024-06-27 23:17:19,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:19,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:19,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:19,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:19,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:19,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:17:19,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 135 transitions, 1106 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) [2024-06-27 23:17:19,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:19,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:17:19,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:20,166 INFO L124 PetriNetUnfolderBase]: 283/520 cut-off events. [2024-06-27 23:17:20,166 INFO L125 PetriNetUnfolderBase]: For 34406/34407 co-relation queries the response was YES. [2024-06-27 23:17:20,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3719 conditions, 520 events. 283/520 cut-off events. For 34406/34407 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2161 event pairs, 56 based on Foata normal form. 3/516 useless extension candidates. Maximal degree in co-relation 3646. Up to 442 conditions per place. [2024-06-27 23:17:20,169 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 105 selfloop transitions, 15 changer transitions 0/144 dead transitions. [2024-06-27 23:17:20,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 144 transitions, 1366 flow [2024-06-27 23:17:20,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:17:20,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:17:20,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-27 23:17:20,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-27 23:17:20,170 INFO L175 Difference]: Start difference. First operand has 155 places, 135 transitions, 1106 flow. Second operand 9 states and 113 transitions. [2024-06-27 23:17:20,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 144 transitions, 1366 flow [2024-06-27 23:17:20,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 144 transitions, 1295 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 23:17:20,216 INFO L231 Difference]: Finished difference. Result has 156 places, 135 transitions, 1069 flow [2024-06-27 23:17:20,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1069, PETRI_PLACES=156, PETRI_TRANSITIONS=135} [2024-06-27 23:17:20,217 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2024-06-27 23:17:20,217 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 135 transitions, 1069 flow [2024-06-27 23:17:20,217 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) [2024-06-27 23:17:20,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:20,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:20,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 23:17:20,218 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)] === [2024-06-27 23:17:20,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:20,218 INFO L85 PathProgramCache]: Analyzing trace with hash 874229954, now seen corresponding path program 1 times [2024-06-27 23:17:20,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:20,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753647850] [2024-06-27 23:17:20,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:20,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:21,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:21,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:21,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753647850] [2024-06-27 23:17:21,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753647850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:21,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:21,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:21,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839337142] [2024-06-27 23:17:21,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:21,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:21,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:21,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:21,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:21,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:17:21,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 135 transitions, 1069 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:17:21,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:21,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:17:21,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:21,590 INFO L124 PetriNetUnfolderBase]: 310/559 cut-off events. [2024-06-27 23:17:21,591 INFO L125 PetriNetUnfolderBase]: For 34887/34887 co-relation queries the response was YES. [2024-06-27 23:17:21,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3952 conditions, 559 events. 310/559 cut-off events. For 34887/34887 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2340 event pairs, 49 based on Foata normal form. 1/554 useless extension candidates. Maximal degree in co-relation 3878. Up to 469 conditions per place. [2024-06-27 23:17:21,595 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 122 selfloop transitions, 28 changer transitions 0/153 dead transitions. [2024-06-27 23:17:21,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 153 transitions, 1449 flow [2024-06-27 23:17:21,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:17:21,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:17:21,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:17:21,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 23:17:21,596 INFO L175 Difference]: Start difference. First operand has 156 places, 135 transitions, 1069 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:17:21,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 153 transitions, 1449 flow [2024-06-27 23:17:21,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 153 transitions, 1411 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 23:17:21,649 INFO L231 Difference]: Finished difference. Result has 160 places, 141 transitions, 1151 flow [2024-06-27 23:17:21,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1151, PETRI_PLACES=160, PETRI_TRANSITIONS=141} [2024-06-27 23:17:21,649 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-27 23:17:21,650 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 141 transitions, 1151 flow [2024-06-27 23:17:21,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:17:21,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:21,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:21,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 23:17:21,650 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)] === [2024-06-27 23:17:21,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:21,651 INFO L85 PathProgramCache]: Analyzing trace with hash 874349924, now seen corresponding path program 2 times [2024-06-27 23:17:21,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:21,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194500900] [2024-06-27 23:17:21,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:21,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:22,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:22,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:22,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194500900] [2024-06-27 23:17:22,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194500900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:22,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:22,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:22,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772469079] [2024-06-27 23:17:22,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:22,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:22,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:22,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:22,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:22,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:17:22,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 141 transitions, 1151 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:17:22,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:22,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:17:22,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:23,234 INFO L124 PetriNetUnfolderBase]: 313/566 cut-off events. [2024-06-27 23:17:23,234 INFO L125 PetriNetUnfolderBase]: For 36328/36328 co-relation queries the response was YES. [2024-06-27 23:17:23,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4069 conditions, 566 events. 313/566 cut-off events. For 36328/36328 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2381 event pairs, 49 based on Foata normal form. 1/561 useless extension candidates. Maximal degree in co-relation 3993. Up to 468 conditions per place. [2024-06-27 23:17:23,238 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 120 selfloop transitions, 31 changer transitions 0/154 dead transitions. [2024-06-27 23:17:23,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 154 transitions, 1513 flow [2024-06-27 23:17:23,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:17:23,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:17:23,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-27 23:17:23,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-27 23:17:23,239 INFO L175 Difference]: Start difference. First operand has 160 places, 141 transitions, 1151 flow. Second operand 9 states and 119 transitions. [2024-06-27 23:17:23,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 154 transitions, 1513 flow [2024-06-27 23:17:23,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 154 transitions, 1461 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 23:17:23,312 INFO L231 Difference]: Finished difference. Result has 164 places, 143 transitions, 1200 flow [2024-06-27 23:17:23,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1099, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1200, PETRI_PLACES=164, PETRI_TRANSITIONS=143} [2024-06-27 23:17:23,313 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-06-27 23:17:23,313 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 143 transitions, 1200 flow [2024-06-27 23:17:23,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:17:23,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:23,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:23,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 23:17:23,314 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)] === [2024-06-27 23:17:23,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:23,315 INFO L85 PathProgramCache]: Analyzing trace with hash 874350110, now seen corresponding path program 1 times [2024-06-27 23:17:23,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:23,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368110261] [2024-06-27 23:17:23,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:23,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:24,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:24,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:24,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368110261] [2024-06-27 23:17:24,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368110261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:24,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:24,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:24,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803559775] [2024-06-27 23:17:24,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:24,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:24,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:24,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:24,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:24,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:17:24,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 143 transitions, 1200 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:17:24,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:24,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:17:24,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:24,799 INFO L124 PetriNetUnfolderBase]: 319/578 cut-off events. [2024-06-27 23:17:24,799 INFO L125 PetriNetUnfolderBase]: For 39470/39470 co-relation queries the response was YES. [2024-06-27 23:17:24,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4193 conditions, 578 events. 319/578 cut-off events. For 39470/39470 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2450 event pairs, 47 based on Foata normal form. 2/574 useless extension candidates. Maximal degree in co-relation 4115. Up to 475 conditions per place. [2024-06-27 23:17:24,803 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 122 selfloop transitions, 32 changer transitions 0/157 dead transitions. [2024-06-27 23:17:24,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 157 transitions, 1576 flow [2024-06-27 23:17:24,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:17:24,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:17:24,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 23:17:24,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 23:17:24,806 INFO L175 Difference]: Start difference. First operand has 164 places, 143 transitions, 1200 flow. Second operand 9 states and 120 transitions. [2024-06-27 23:17:24,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 157 transitions, 1576 flow [2024-06-27 23:17:24,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 157 transitions, 1491 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 23:17:24,873 INFO L231 Difference]: Finished difference. Result has 166 places, 146 transitions, 1230 flow [2024-06-27 23:17:24,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1115, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1230, PETRI_PLACES=166, PETRI_TRANSITIONS=146} [2024-06-27 23:17:24,874 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 135 predicate places. [2024-06-27 23:17:24,874 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 146 transitions, 1230 flow [2024-06-27 23:17:24,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:17:24,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:24,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:24,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 23:17:24,875 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)] === [2024-06-27 23:17:24,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:24,875 INFO L85 PathProgramCache]: Analyzing trace with hash 878991740, now seen corresponding path program 2 times [2024-06-27 23:17:24,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:24,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730977617] [2024-06-27 23:17:24,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:24,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:26,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:26,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:26,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730977617] [2024-06-27 23:17:26,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730977617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:26,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:26,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:26,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347474917] [2024-06-27 23:17:26,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:26,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:26,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:26,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:26,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:26,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:17:26,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 146 transitions, 1230 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:17:26,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:26,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:17:26,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:26,617 INFO L124 PetriNetUnfolderBase]: 322/583 cut-off events. [2024-06-27 23:17:26,617 INFO L125 PetriNetUnfolderBase]: For 40632/40632 co-relation queries the response was YES. [2024-06-27 23:17:26,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4297 conditions, 583 events. 322/583 cut-off events. For 40632/40632 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2481 event pairs, 49 based on Foata normal form. 1/578 useless extension candidates. Maximal degree in co-relation 4218. Up to 477 conditions per place. [2024-06-27 23:17:26,621 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 121 selfloop transitions, 34 changer transitions 0/158 dead transitions. [2024-06-27 23:17:26,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 158 transitions, 1600 flow [2024-06-27 23:17:26,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:17:26,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:17:26,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 23:17:26,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 23:17:26,623 INFO L175 Difference]: Start difference. First operand has 166 places, 146 transitions, 1230 flow. Second operand 9 states and 120 transitions. [2024-06-27 23:17:26,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 158 transitions, 1600 flow [2024-06-27 23:17:26,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 158 transitions, 1509 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 23:17:26,680 INFO L231 Difference]: Finished difference. Result has 168 places, 148 transitions, 1250 flow [2024-06-27 23:17:26,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1250, PETRI_PLACES=168, PETRI_TRANSITIONS=148} [2024-06-27 23:17:26,680 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 137 predicate places. [2024-06-27 23:17:26,681 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 148 transitions, 1250 flow [2024-06-27 23:17:26,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:17:26,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:26,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:26,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 23:17:26,681 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)] === [2024-06-27 23:17:26,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:26,682 INFO L85 PathProgramCache]: Analyzing trace with hash 878991554, now seen corresponding path program 3 times [2024-06-27 23:17:26,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:26,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913096852] [2024-06-27 23:17:26,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:26,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:27,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:27,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:27,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913096852] [2024-06-27 23:17:27,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913096852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:27,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:27,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:27,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935393817] [2024-06-27 23:17:27,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:27,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:27,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:27,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:27,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:28,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:17:28,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 148 transitions, 1250 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:17:28,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:28,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:17:28,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:28,410 INFO L124 PetriNetUnfolderBase]: 325/588 cut-off events. [2024-06-27 23:17:28,410 INFO L125 PetriNetUnfolderBase]: For 43256/43256 co-relation queries the response was YES. [2024-06-27 23:17:28,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4358 conditions, 588 events. 325/588 cut-off events. For 43256/43256 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2516 event pairs, 49 based on Foata normal form. 1/583 useless extension candidates. Maximal degree in co-relation 4278. Up to 479 conditions per place. [2024-06-27 23:17:28,414 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 122 selfloop transitions, 35 changer transitions 0/160 dead transitions. [2024-06-27 23:17:28,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 160 transitions, 1626 flow [2024-06-27 23:17:28,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:17:28,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:17:28,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 23:17:28,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 23:17:28,416 INFO L175 Difference]: Start difference. First operand has 168 places, 148 transitions, 1250 flow. Second operand 9 states and 120 transitions. [2024-06-27 23:17:28,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 160 transitions, 1626 flow [2024-06-27 23:17:28,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 160 transitions, 1531 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 23:17:28,479 INFO L231 Difference]: Finished difference. Result has 170 places, 150 transitions, 1270 flow [2024-06-27 23:17:28,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1155, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1270, PETRI_PLACES=170, PETRI_TRANSITIONS=150} [2024-06-27 23:17:28,479 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-27 23:17:28,479 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 150 transitions, 1270 flow [2024-06-27 23:17:28,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:17:28,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:28,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:28,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 23:17:28,480 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)] === [2024-06-27 23:17:28,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:28,481 INFO L85 PathProgramCache]: Analyzing trace with hash 878998498, now seen corresponding path program 1 times [2024-06-27 23:17:28,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:28,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107523640] [2024-06-27 23:17:28,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:28,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:29,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:29,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:29,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107523640] [2024-06-27 23:17:29,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107523640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:29,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:29,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:17:29,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406416308] [2024-06-27 23:17:29,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:29,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:17:29,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:29,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:17:29,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:17:29,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:17:29,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 150 transitions, 1270 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) [2024-06-27 23:17:29,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:29,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:17:29,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:30,113 INFO L124 PetriNetUnfolderBase]: 328/593 cut-off events. [2024-06-27 23:17:30,113 INFO L125 PetriNetUnfolderBase]: For 43604/43604 co-relation queries the response was YES. [2024-06-27 23:17:30,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4427 conditions, 593 events. 328/593 cut-off events. For 43604/43604 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2526 event pairs, 38 based on Foata normal form. 1/592 useless extension candidates. Maximal degree in co-relation 4347. Up to 518 conditions per place. [2024-06-27 23:17:30,118 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 130 selfloop transitions, 30 changer transitions 0/164 dead transitions. [2024-06-27 23:17:30,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 164 transitions, 1648 flow [2024-06-27 23:17:30,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:17:30,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:17:30,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2024-06-27 23:17:30,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46484375 [2024-06-27 23:17:30,120 INFO L175 Difference]: Start difference. First operand has 170 places, 150 transitions, 1270 flow. Second operand 8 states and 119 transitions. [2024-06-27 23:17:30,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 164 transitions, 1648 flow [2024-06-27 23:17:30,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 164 transitions, 1549 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 23:17:30,187 INFO L231 Difference]: Finished difference. Result has 171 places, 152 transitions, 1270 flow [2024-06-27 23:17:30,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1171, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1270, PETRI_PLACES=171, PETRI_TRANSITIONS=152} [2024-06-27 23:17:30,187 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 140 predicate places. [2024-06-27 23:17:30,188 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 152 transitions, 1270 flow [2024-06-27 23:17:30,188 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) [2024-06-27 23:17:30,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:30,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:30,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 23:17:30,188 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)] === [2024-06-27 23:17:30,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:30,189 INFO L85 PathProgramCache]: Analyzing trace with hash 878998250, now seen corresponding path program 3 times [2024-06-27 23:17:30,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:30,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675607575] [2024-06-27 23:17:30,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:30,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:31,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:31,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:31,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675607575] [2024-06-27 23:17:31,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675607575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:31,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:31,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:31,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227281780] [2024-06-27 23:17:31,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:31,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:31,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:31,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:31,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:31,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:17:31,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 152 transitions, 1270 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:17:31,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:31,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:17:31,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:31,952 INFO L124 PetriNetUnfolderBase]: 331/600 cut-off events. [2024-06-27 23:17:31,953 INFO L125 PetriNetUnfolderBase]: For 44960/44960 co-relation queries the response was YES. [2024-06-27 23:17:31,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4504 conditions, 600 events. 331/600 cut-off events. For 44960/44960 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2588 event pairs, 46 based on Foata normal form. 1/595 useless extension candidates. Maximal degree in co-relation 4423. Up to 480 conditions per place. [2024-06-27 23:17:31,957 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 121 selfloop transitions, 40 changer transitions 0/164 dead transitions. [2024-06-27 23:17:31,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 164 transitions, 1656 flow [2024-06-27 23:17:31,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:17:31,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:17:31,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-27 23:17:31,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-06-27 23:17:31,958 INFO L175 Difference]: Start difference. First operand has 171 places, 152 transitions, 1270 flow. Second operand 9 states and 122 transitions. [2024-06-27 23:17:31,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 164 transitions, 1656 flow [2024-06-27 23:17:32,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 164 transitions, 1577 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 23:17:32,032 INFO L231 Difference]: Finished difference. Result has 174 places, 154 transitions, 1318 flow [2024-06-27 23:17:32,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1318, PETRI_PLACES=174, PETRI_TRANSITIONS=154} [2024-06-27 23:17:32,033 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 143 predicate places. [2024-06-27 23:17:32,033 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 154 transitions, 1318 flow [2024-06-27 23:17:32,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:17:32,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:32,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:32,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 23:17:32,033 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)] === [2024-06-27 23:17:32,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:32,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1051488140, now seen corresponding path program 4 times [2024-06-27 23:17:32,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:32,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774860084] [2024-06-27 23:17:32,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:32,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:33,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:33,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:33,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774860084] [2024-06-27 23:17:33,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774860084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:33,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:33,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:33,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444386953] [2024-06-27 23:17:33,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:33,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:33,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:33,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:33,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:33,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:17:33,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 154 transitions, 1318 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:17:33,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:33,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:17:33,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:33,805 INFO L124 PetriNetUnfolderBase]: 339/613 cut-off events. [2024-06-27 23:17:33,805 INFO L125 PetriNetUnfolderBase]: For 50047/50047 co-relation queries the response was YES. [2024-06-27 23:17:33,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4738 conditions, 613 events. 339/613 cut-off events. For 50047/50047 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2651 event pairs, 48 based on Foata normal form. 1/608 useless extension candidates. Maximal degree in co-relation 4655. Up to 489 conditions per place. [2024-06-27 23:17:33,810 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 124 selfloop transitions, 41 changer transitions 0/168 dead transitions. [2024-06-27 23:17:33,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 168 transitions, 1866 flow [2024-06-27 23:17:33,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:17:33,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:17:33,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-27 23:17:33,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-27 23:17:33,811 INFO L175 Difference]: Start difference. First operand has 174 places, 154 transitions, 1318 flow. Second operand 9 states and 124 transitions. [2024-06-27 23:17:33,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 168 transitions, 1866 flow [2024-06-27 23:17:33,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 168 transitions, 1755 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 23:17:33,879 INFO L231 Difference]: Finished difference. Result has 176 places, 158 transitions, 1382 flow [2024-06-27 23:17:33,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1207, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1382, PETRI_PLACES=176, PETRI_TRANSITIONS=158} [2024-06-27 23:17:33,880 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 145 predicate places. [2024-06-27 23:17:33,880 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 158 transitions, 1382 flow [2024-06-27 23:17:33,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:17:33,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:33,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:33,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 23:17:33,881 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)] === [2024-06-27 23:17:33,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:33,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1051488388, now seen corresponding path program 2 times [2024-06-27 23:17:33,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:33,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770189654] [2024-06-27 23:17:33,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:33,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:35,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:35,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:35,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770189654] [2024-06-27 23:17:35,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770189654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:35,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:35,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:17:35,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930894106] [2024-06-27 23:17:35,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:35,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:17:35,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:35,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:17:35,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:17:35,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:17:35,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 158 transitions, 1382 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) [2024-06-27 23:17:35,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:35,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:17:35,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:35,645 INFO L124 PetriNetUnfolderBase]: 342/618 cut-off events. [2024-06-27 23:17:35,646 INFO L125 PetriNetUnfolderBase]: For 51975/51975 co-relation queries the response was YES. [2024-06-27 23:17:35,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4807 conditions, 618 events. 342/618 cut-off events. For 51975/51975 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2666 event pairs, 41 based on Foata normal form. 1/617 useless extension candidates. Maximal degree in co-relation 4724. Up to 534 conditions per place. [2024-06-27 23:17:35,650 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 133 selfloop transitions, 33 changer transitions 0/170 dead transitions. [2024-06-27 23:17:35,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 170 transitions, 1770 flow [2024-06-27 23:17:35,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:17:35,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:17:35,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-06-27 23:17:35,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609375 [2024-06-27 23:17:35,652 INFO L175 Difference]: Start difference. First operand has 176 places, 158 transitions, 1382 flow. Second operand 8 states and 118 transitions. [2024-06-27 23:17:35,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 170 transitions, 1770 flow [2024-06-27 23:17:35,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 170 transitions, 1681 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-27 23:17:35,720 INFO L231 Difference]: Finished difference. Result has 179 places, 160 transitions, 1401 flow [2024-06-27 23:17:35,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1293, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1401, PETRI_PLACES=179, PETRI_TRANSITIONS=160} [2024-06-27 23:17:35,720 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 148 predicate places. [2024-06-27 23:17:35,720 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 160 transitions, 1401 flow [2024-06-27 23:17:35,721 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) [2024-06-27 23:17:35,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:35,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:35,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 23:17:35,721 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)] === [2024-06-27 23:17:35,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:35,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1051718780, now seen corresponding path program 5 times [2024-06-27 23:17:35,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:35,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645448439] [2024-06-27 23:17:35,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:35,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:37,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:37,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:37,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645448439] [2024-06-27 23:17:37,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645448439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:37,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:37,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:37,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805069727] [2024-06-27 23:17:37,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:37,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:37,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:37,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:37,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:37,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:17:37,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 160 transitions, 1401 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:17:37,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:37,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:17:37,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:37,641 INFO L124 PetriNetUnfolderBase]: 345/623 cut-off events. [2024-06-27 23:17:37,642 INFO L125 PetriNetUnfolderBase]: For 52145/52145 co-relation queries the response was YES. [2024-06-27 23:17:37,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4929 conditions, 623 events. 345/623 cut-off events. For 52145/52145 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2720 event pairs, 46 based on Foata normal form. 1/618 useless extension candidates. Maximal degree in co-relation 4844. Up to 475 conditions per place. [2024-06-27 23:17:37,648 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 116 selfloop transitions, 53 changer transitions 0/172 dead transitions. [2024-06-27 23:17:37,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 172 transitions, 1923 flow [2024-06-27 23:17:37,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:17:37,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:17:37,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-27 23:17:37,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340277777777778 [2024-06-27 23:17:37,651 INFO L175 Difference]: Start difference. First operand has 179 places, 160 transitions, 1401 flow. Second operand 9 states and 125 transitions. [2024-06-27 23:17:37,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 172 transitions, 1923 flow [2024-06-27 23:17:37,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 172 transitions, 1833 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 23:17:37,745 INFO L231 Difference]: Finished difference. Result has 182 places, 162 transitions, 1472 flow [2024-06-27 23:17:37,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1311, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1472, PETRI_PLACES=182, PETRI_TRANSITIONS=162} [2024-06-27 23:17:37,745 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 151 predicate places. [2024-06-27 23:17:37,746 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 162 transitions, 1472 flow [2024-06-27 23:17:37,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:17:37,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:37,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:37,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 23:17:37,746 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)] === [2024-06-27 23:17:37,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:37,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1051719028, now seen corresponding path program 3 times [2024-06-27 23:17:37,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:37,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710144063] [2024-06-27 23:17:37,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:37,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:39,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:39,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:39,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710144063] [2024-06-27 23:17:39,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710144063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:39,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:39,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:17:39,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096850135] [2024-06-27 23:17:39,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:39,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:17:39,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:39,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:17:39,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:17:39,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:17:39,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 162 transitions, 1472 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) [2024-06-27 23:17:39,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:39,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:17:39,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:39,477 INFO L124 PetriNetUnfolderBase]: 371/665 cut-off events. [2024-06-27 23:17:39,478 INFO L125 PetriNetUnfolderBase]: For 62285/62285 co-relation queries the response was YES. [2024-06-27 23:17:39,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5518 conditions, 665 events. 371/665 cut-off events. For 62285/62285 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2915 event pairs, 37 based on Foata normal form. 2/665 useless extension candidates. Maximal degree in co-relation 5432. Up to 518 conditions per place. [2024-06-27 23:17:39,483 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 133 selfloop transitions, 46 changer transitions 0/183 dead transitions. [2024-06-27 23:17:39,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 183 transitions, 2216 flow [2024-06-27 23:17:39,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:17:39,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:17:39,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-27 23:17:39,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-06-27 23:17:39,484 INFO L175 Difference]: Start difference. First operand has 182 places, 162 transitions, 1472 flow. Second operand 8 states and 126 transitions. [2024-06-27 23:17:39,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 183 transitions, 2216 flow [2024-06-27 23:17:39,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 183 transitions, 2071 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 23:17:39,596 INFO L231 Difference]: Finished difference. Result has 184 places, 169 transitions, 1549 flow [2024-06-27 23:17:39,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1327, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1549, PETRI_PLACES=184, PETRI_TRANSITIONS=169} [2024-06-27 23:17:39,597 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-27 23:17:39,597 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 169 transitions, 1549 flow [2024-06-27 23:17:39,598 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) [2024-06-27 23:17:39,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:39,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:39,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 23:17:39,598 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)] === [2024-06-27 23:17:39,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:39,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1051727398, now seen corresponding path program 4 times [2024-06-27 23:17:39,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:39,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785979935] [2024-06-27 23:17:39,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:39,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:41,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:41,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:41,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785979935] [2024-06-27 23:17:41,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785979935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:41,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:41,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:17:41,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000272525] [2024-06-27 23:17:41,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:41,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:17:41,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:41,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:17:41,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:17:41,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:17:41,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 169 transitions, 1549 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) [2024-06-27 23:17:41,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:41,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:17:41,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:41,490 INFO L124 PetriNetUnfolderBase]: 368/661 cut-off events. [2024-06-27 23:17:41,490 INFO L125 PetriNetUnfolderBase]: For 61187/61187 co-relation queries the response was YES. [2024-06-27 23:17:41,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5451 conditions, 661 events. 368/661 cut-off events. For 61187/61187 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2901 event pairs, 36 based on Foata normal form. 2/661 useless extension candidates. Maximal degree in co-relation 5364. Up to 517 conditions per place. [2024-06-27 23:17:41,495 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 127 selfloop transitions, 51 changer transitions 0/182 dead transitions. [2024-06-27 23:17:41,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 182 transitions, 2077 flow [2024-06-27 23:17:41,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:17:41,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:17:41,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-27 23:17:41,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48046875 [2024-06-27 23:17:41,496 INFO L175 Difference]: Start difference. First operand has 184 places, 169 transitions, 1549 flow. Second operand 8 states and 123 transitions. [2024-06-27 23:17:41,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 182 transitions, 2077 flow [2024-06-27 23:17:41,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 182 transitions, 2009 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 23:17:41,607 INFO L231 Difference]: Finished difference. Result has 189 places, 169 transitions, 1589 flow [2024-06-27 23:17:41,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1481, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1589, PETRI_PLACES=189, PETRI_TRANSITIONS=169} [2024-06-27 23:17:41,608 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-27 23:17:41,608 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 169 transitions, 1589 flow [2024-06-27 23:17:41,608 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) [2024-06-27 23:17:41,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:41,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:41,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 23:17:41,609 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)] === [2024-06-27 23:17:41,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:41,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1051727708, now seen corresponding path program 1 times [2024-06-27 23:17:41,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:41,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559457090] [2024-06-27 23:17:41,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:41,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:43,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:43,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:43,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559457090] [2024-06-27 23:17:43,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559457090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:43,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:43,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:17:43,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858862766] [2024-06-27 23:17:43,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:43,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:17:43,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:43,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:17:43,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:17:43,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-27 23:17:43,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 169 transitions, 1589 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:43,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:43,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-27 23:17:43,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:43,695 INFO L124 PetriNetUnfolderBase]: 345/633 cut-off events. [2024-06-27 23:17:43,695 INFO L125 PetriNetUnfolderBase]: For 60146/60147 co-relation queries the response was YES. [2024-06-27 23:17:43,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5258 conditions, 633 events. 345/633 cut-off events. For 60146/60147 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2842 event pairs, 40 based on Foata normal form. 2/630 useless extension candidates. Maximal degree in co-relation 5169. Up to 513 conditions per place. [2024-06-27 23:17:43,700 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 129 selfloop transitions, 21 changer transitions 0/180 dead transitions. [2024-06-27 23:17:43,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 180 transitions, 1922 flow [2024-06-27 23:17:43,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:17:43,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:17:43,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-27 23:17:43,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48046875 [2024-06-27 23:17:43,702 INFO L175 Difference]: Start difference. First operand has 189 places, 169 transitions, 1589 flow. Second operand 8 states and 123 transitions. [2024-06-27 23:17:43,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 180 transitions, 1922 flow [2024-06-27 23:17:43,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 180 transitions, 1822 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 23:17:43,799 INFO L231 Difference]: Finished difference. Result has 191 places, 170 transitions, 1547 flow [2024-06-27 23:17:43,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1490, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1547, PETRI_PLACES=191, PETRI_TRANSITIONS=170} [2024-06-27 23:17:43,800 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-06-27 23:17:43,800 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 170 transitions, 1547 flow [2024-06-27 23:17:43,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:43,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:43,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:43,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 23:17:43,800 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)] === [2024-06-27 23:17:43,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:43,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1051481444, now seen corresponding path program 4 times [2024-06-27 23:17:43,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:43,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534843182] [2024-06-27 23:17:43,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:43,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:45,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:45,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:45,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534843182] [2024-06-27 23:17:45,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534843182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:45,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:45,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:45,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193520236] [2024-06-27 23:17:45,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:45,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:45,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:45,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:45,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:45,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:17:45,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 170 transitions, 1547 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:17:45,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:45,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:17:45,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:45,729 INFO L124 PetriNetUnfolderBase]: 368/663 cut-off events. [2024-06-27 23:17:45,730 INFO L125 PetriNetUnfolderBase]: For 61413/61413 co-relation queries the response was YES. [2024-06-27 23:17:45,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5448 conditions, 663 events. 368/663 cut-off events. For 61413/61413 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2933 event pairs, 46 based on Foata normal form. 1/658 useless extension candidates. Maximal degree in co-relation 5357. Up to 538 conditions per place. [2024-06-27 23:17:45,735 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 138 selfloop transitions, 40 changer transitions 0/181 dead transitions. [2024-06-27 23:17:45,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 181 transitions, 1965 flow [2024-06-27 23:17:45,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:17:45,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:17:45,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-27 23:17:45,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201388888888889 [2024-06-27 23:17:45,736 INFO L175 Difference]: Start difference. First operand has 191 places, 170 transitions, 1547 flow. Second operand 9 states and 121 transitions. [2024-06-27 23:17:45,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 181 transitions, 1965 flow [2024-06-27 23:17:45,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 181 transitions, 1910 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 23:17:45,848 INFO L231 Difference]: Finished difference. Result has 194 places, 172 transitions, 1621 flow [2024-06-27 23:17:45,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1492, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1621, PETRI_PLACES=194, PETRI_TRANSITIONS=172} [2024-06-27 23:17:45,849 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-06-27 23:17:45,849 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 172 transitions, 1621 flow [2024-06-27 23:17:45,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:17:45,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:45,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:45,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 23:17:45,850 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)] === [2024-06-27 23:17:45,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:45,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1051481630, now seen corresponding path program 6 times [2024-06-27 23:17:45,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:45,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538062319] [2024-06-27 23:17:45,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:45,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:47,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:47,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:47,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538062319] [2024-06-27 23:17:47,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538062319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:47,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:47,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:47,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579780141] [2024-06-27 23:17:47,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:47,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:47,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:47,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:47,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:47,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:17:47,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 172 transitions, 1621 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:17:47,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:47,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:17:47,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:47,382 INFO L124 PetriNetUnfolderBase]: 366/660 cut-off events. [2024-06-27 23:17:47,382 INFO L125 PetriNetUnfolderBase]: For 63271/63271 co-relation queries the response was YES. [2024-06-27 23:17:47,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5443 conditions, 660 events. 366/660 cut-off events. For 63271/63271 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2943 event pairs, 48 based on Foata normal form. 1/655 useless extension candidates. Maximal degree in co-relation 5350. Up to 541 conditions per place. [2024-06-27 23:17:47,387 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 140 selfloop transitions, 38 changer transitions 0/181 dead transitions. [2024-06-27 23:17:47,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 181 transitions, 1999 flow [2024-06-27 23:17:47,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:17:47,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:17:47,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-27 23:17:47,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201388888888889 [2024-06-27 23:17:47,396 INFO L175 Difference]: Start difference. First operand has 194 places, 172 transitions, 1621 flow. Second operand 9 states and 121 transitions. [2024-06-27 23:17:47,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 181 transitions, 1999 flow [2024-06-27 23:17:47,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 181 transitions, 1856 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-27 23:17:47,498 INFO L231 Difference]: Finished difference. Result has 196 places, 172 transitions, 1559 flow [2024-06-27 23:17:47,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1478, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1559, PETRI_PLACES=196, PETRI_TRANSITIONS=172} [2024-06-27 23:17:47,498 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-27 23:17:47,498 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 172 transitions, 1559 flow [2024-06-27 23:17:47,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:17:47,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:47,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:47,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 23:17:47,499 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)] === [2024-06-27 23:17:47,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:47,499 INFO L85 PathProgramCache]: Analyzing trace with hash 382981980, now seen corresponding path program 2 times [2024-06-27 23:17:47,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:47,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949329989] [2024-06-27 23:17:47,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:47,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:49,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:49,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:49,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949329989] [2024-06-27 23:17:49,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949329989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:49,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:49,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:17:49,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216114037] [2024-06-27 23:17:49,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:49,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:17:49,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:49,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:17:49,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:17:49,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-27 23:17:49,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 172 transitions, 1559 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:49,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:49,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-27 23:17:49,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:49,439 INFO L124 PetriNetUnfolderBase]: 350/644 cut-off events. [2024-06-27 23:17:49,439 INFO L125 PetriNetUnfolderBase]: For 65744/65745 co-relation queries the response was YES. [2024-06-27 23:17:49,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5291 conditions, 644 events. 350/644 cut-off events. For 65744/65745 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2919 event pairs, 44 based on Foata normal form. 2/640 useless extension candidates. Maximal degree in co-relation 5198. Up to 519 conditions per place. [2024-06-27 23:17:49,444 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 131 selfloop transitions, 21 changer transitions 0/182 dead transitions. [2024-06-27 23:17:49,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 182 transitions, 1909 flow [2024-06-27 23:17:49,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:17:49,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:17:49,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 122 transitions. [2024-06-27 23:17:49,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765625 [2024-06-27 23:17:49,445 INFO L175 Difference]: Start difference. First operand has 196 places, 172 transitions, 1559 flow. Second operand 8 states and 122 transitions. [2024-06-27 23:17:49,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 182 transitions, 1909 flow [2024-06-27 23:17:49,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 182 transitions, 1826 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 23:17:49,573 INFO L231 Difference]: Finished difference. Result has 196 places, 174 transitions, 1555 flow [2024-06-27 23:17:49,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1476, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1555, PETRI_PLACES=196, PETRI_TRANSITIONS=174} [2024-06-27 23:17:49,574 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-27 23:17:49,574 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 174 transitions, 1555 flow [2024-06-27 23:17:49,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:49,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:49,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:49,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 23:17:49,575 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)] === [2024-06-27 23:17:49,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:49,575 INFO L85 PathProgramCache]: Analyzing trace with hash 382981670, now seen corresponding path program 5 times [2024-06-27 23:17:49,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:49,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423356401] [2024-06-27 23:17:49,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:49,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:51,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:51,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:51,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423356401] [2024-06-27 23:17:51,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423356401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:51,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:51,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:51,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550852866] [2024-06-27 23:17:51,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:51,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:51,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:51,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:51,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:51,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:17:51,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 174 transitions, 1555 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) [2024-06-27 23:17:51,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:51,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:17:51,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:51,458 INFO L124 PetriNetUnfolderBase]: 377/679 cut-off events. [2024-06-27 23:17:51,459 INFO L125 PetriNetUnfolderBase]: For 67333/67333 co-relation queries the response was YES. [2024-06-27 23:17:51,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5649 conditions, 679 events. 377/679 cut-off events. For 67333/67333 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3035 event pairs, 44 based on Foata normal form. 1/676 useless extension candidates. Maximal degree in co-relation 5555. Up to 573 conditions per place. [2024-06-27 23:17:51,464 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 144 selfloop transitions, 40 changer transitions 0/187 dead transitions. [2024-06-27 23:17:51,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 187 transitions, 2147 flow [2024-06-27 23:17:51,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:17:51,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:17:51,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-27 23:17:51,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-06-27 23:17:51,466 INFO L175 Difference]: Start difference. First operand has 196 places, 174 transitions, 1555 flow. Second operand 9 states and 122 transitions. [2024-06-27 23:17:51,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 187 transitions, 2147 flow [2024-06-27 23:17:51,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 187 transitions, 2084 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 23:17:51,585 INFO L231 Difference]: Finished difference. Result has 199 places, 178 transitions, 1657 flow [2024-06-27 23:17:51,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1492, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1657, PETRI_PLACES=199, PETRI_TRANSITIONS=178} [2024-06-27 23:17:51,586 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-27 23:17:51,586 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 178 transitions, 1657 flow [2024-06-27 23:17:51,586 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) [2024-06-27 23:17:51,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:51,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:51,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 23:17:51,587 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)] === [2024-06-27 23:17:51,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:51,587 INFO L85 PathProgramCache]: Analyzing trace with hash 382973300, now seen corresponding path program 6 times [2024-06-27 23:17:51,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:51,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053077492] [2024-06-27 23:17:51,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:51,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:53,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:53,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:53,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053077492] [2024-06-27 23:17:53,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053077492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:53,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:53,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:53,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236853891] [2024-06-27 23:17:53,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:53,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:53,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:53,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:53,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:53,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:17:53,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 178 transitions, 1657 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) [2024-06-27 23:17:53,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:53,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:17:53,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:53,591 INFO L124 PetriNetUnfolderBase]: 380/684 cut-off events. [2024-06-27 23:17:53,591 INFO L125 PetriNetUnfolderBase]: For 69645/69645 co-relation queries the response was YES. [2024-06-27 23:17:53,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5783 conditions, 684 events. 380/684 cut-off events. For 69645/69645 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3044 event pairs, 44 based on Foata normal form. 1/681 useless extension candidates. Maximal degree in co-relation 5687. Up to 577 conditions per place. [2024-06-27 23:17:53,596 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 145 selfloop transitions, 41 changer transitions 0/189 dead transitions. [2024-06-27 23:17:53,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 189 transitions, 2221 flow [2024-06-27 23:17:53,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:17:53,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:17:53,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-27 23:17:53,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-27 23:17:53,598 INFO L175 Difference]: Start difference. First operand has 199 places, 178 transitions, 1657 flow. Second operand 9 states and 123 transitions. [2024-06-27 23:17:53,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 189 transitions, 2221 flow [2024-06-27 23:17:53,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 189 transitions, 2131 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 23:17:53,721 INFO L231 Difference]: Finished difference. Result has 203 places, 180 transitions, 1696 flow [2024-06-27 23:17:53,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1573, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1696, PETRI_PLACES=203, PETRI_TRANSITIONS=180} [2024-06-27 23:17:53,721 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 172 predicate places. [2024-06-27 23:17:53,721 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 180 transitions, 1696 flow [2024-06-27 23:17:53,722 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) [2024-06-27 23:17:53,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:53,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:53,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 23:17:53,722 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)] === [2024-06-27 23:17:53,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:53,722 INFO L85 PathProgramCache]: Analyzing trace with hash 920746364, now seen corresponding path program 7 times [2024-06-27 23:17:53,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:53,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075651549] [2024-06-27 23:17:53,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:53,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:55,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:55,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:55,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075651549] [2024-06-27 23:17:55,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075651549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:55,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:55,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:55,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465967285] [2024-06-27 23:17:55,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:55,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:55,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:55,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:55,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:55,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:17:55,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 180 transitions, 1696 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:17:55,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:55,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:17:55,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:55,644 INFO L124 PetriNetUnfolderBase]: 393/704 cut-off events. [2024-06-27 23:17:55,644 INFO L125 PetriNetUnfolderBase]: For 76492/76492 co-relation queries the response was YES. [2024-06-27 23:17:55,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6185 conditions, 704 events. 393/704 cut-off events. For 76492/76492 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3172 event pairs, 54 based on Foata normal form. 1/699 useless extension candidates. Maximal degree in co-relation 6087. Up to 532 conditions per place. [2024-06-27 23:17:55,650 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 129 selfloop transitions, 64 changer transitions 0/196 dead transitions. [2024-06-27 23:17:55,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 196 transitions, 2512 flow [2024-06-27 23:17:55,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:17:55,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:17:55,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-27 23:17:55,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-06-27 23:17:55,653 INFO L175 Difference]: Start difference. First operand has 203 places, 180 transitions, 1696 flow. Second operand 9 states and 122 transitions. [2024-06-27 23:17:55,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 196 transitions, 2512 flow [2024-06-27 23:17:55,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 196 transitions, 2413 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 23:17:55,789 INFO L231 Difference]: Finished difference. Result has 207 places, 186 transitions, 1925 flow [2024-06-27 23:17:55,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1597, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1925, PETRI_PLACES=207, PETRI_TRANSITIONS=186} [2024-06-27 23:17:55,789 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 176 predicate places. [2024-06-27 23:17:55,789 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 186 transitions, 1925 flow [2024-06-27 23:17:55,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:17:55,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:55,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:55,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 23:17:55,790 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)] === [2024-06-27 23:17:55,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:55,790 INFO L85 PathProgramCache]: Analyzing trace with hash 678201180, now seen corresponding path program 3 times [2024-06-27 23:17:55,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:55,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952618340] [2024-06-27 23:17:55,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:55,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:58,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:58,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:58,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952618340] [2024-06-27 23:17:58,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952618340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:58,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:58,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:17:58,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516363268] [2024-06-27 23:17:58,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:58,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:17:58,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:58,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:17:58,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:17:58,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:17:58,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 186 transitions, 1925 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) [2024-06-27 23:17:58,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:58,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:17:58,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:59,378 INFO L124 PetriNetUnfolderBase]: 376/685 cut-off events. [2024-06-27 23:17:59,378 INFO L125 PetriNetUnfolderBase]: For 82413/82414 co-relation queries the response was YES. [2024-06-27 23:17:59,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6225 conditions, 685 events. 376/685 cut-off events. For 82413/82414 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3142 event pairs, 53 based on Foata normal form. 2/680 useless extension candidates. Maximal degree in co-relation 6125. Up to 572 conditions per place. [2024-06-27 23:17:59,384 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 148 selfloop transitions, 16 changer transitions 0/196 dead transitions. [2024-06-27 23:17:59,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 196 transitions, 2303 flow [2024-06-27 23:17:59,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:17:59,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:17:59,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 23:17:59,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-27 23:17:59,385 INFO L175 Difference]: Start difference. First operand has 207 places, 186 transitions, 1925 flow. Second operand 9 states and 114 transitions. [2024-06-27 23:17:59,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 196 transitions, 2303 flow [2024-06-27 23:17:59,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 196 transitions, 2214 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-27 23:17:59,506 INFO L231 Difference]: Finished difference. Result has 212 places, 188 transitions, 1909 flow [2024-06-27 23:17:59,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1836, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1909, PETRI_PLACES=212, PETRI_TRANSITIONS=188} [2024-06-27 23:17:59,507 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-27 23:17:59,507 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 188 transitions, 1909 flow [2024-06-27 23:17:59,507 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) [2024-06-27 23:17:59,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:59,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:17:59,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 23:17:59,508 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)] === [2024-06-27 23:17:59,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:59,508 INFO L85 PathProgramCache]: Analyzing trace with hash 382735716, now seen corresponding path program 5 times [2024-06-27 23:17:59,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:59,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699776789] [2024-06-27 23:17:59,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:59,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:00,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:00,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:00,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699776789] [2024-06-27 23:18:00,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699776789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:00,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:00,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:18:00,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469528249] [2024-06-27 23:18:00,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:00,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:18:00,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:00,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:18:00,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:18:00,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:18:00,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 188 transitions, 1909 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:00,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:00,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:18:00,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:01,265 INFO L124 PetriNetUnfolderBase]: 399/716 cut-off events. [2024-06-27 23:18:01,265 INFO L125 PetriNetUnfolderBase]: For 83431/83431 co-relation queries the response was YES. [2024-06-27 23:18:01,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6485 conditions, 716 events. 399/716 cut-off events. For 83431/83431 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3246 event pairs, 56 based on Foata normal form. 1/711 useless extension candidates. Maximal degree in co-relation 6383. Up to 526 conditions per place. [2024-06-27 23:18:01,271 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 138 selfloop transitions, 60 changer transitions 0/201 dead transitions. [2024-06-27 23:18:01,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 201 transitions, 2557 flow [2024-06-27 23:18:01,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:18:01,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:18:01,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-27 23:18:01,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-27 23:18:01,272 INFO L175 Difference]: Start difference. First operand has 212 places, 188 transitions, 1909 flow. Second operand 9 states and 119 transitions. [2024-06-27 23:18:01,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 201 transitions, 2557 flow [2024-06-27 23:18:01,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 201 transitions, 2500 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 23:18:01,411 INFO L231 Difference]: Finished difference. Result has 214 places, 192 transitions, 2077 flow [2024-06-27 23:18:01,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1852, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2077, PETRI_PLACES=214, PETRI_TRANSITIONS=192} [2024-06-27 23:18:01,411 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 183 predicate places. [2024-06-27 23:18:01,411 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 192 transitions, 2077 flow [2024-06-27 23:18:01,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:01,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:01,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:01,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 23:18:01,412 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)] === [2024-06-27 23:18:01,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:01,412 INFO L85 PathProgramCache]: Analyzing trace with hash 668081850, now seen corresponding path program 4 times [2024-06-27 23:18:01,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:01,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139769034] [2024-06-27 23:18:01,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:01,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:03,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:03,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:03,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139769034] [2024-06-27 23:18:03,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139769034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:03,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:03,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:18:03,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415045947] [2024-06-27 23:18:03,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:03,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:18:03,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:03,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:18:03,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:18:03,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-27 23:18:03,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 192 transitions, 2077 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:03,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:03,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-27 23:18:03,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:03,670 INFO L124 PetriNetUnfolderBase]: 382/699 cut-off events. [2024-06-27 23:18:03,671 INFO L125 PetriNetUnfolderBase]: For 87479/87480 co-relation queries the response was YES. [2024-06-27 23:18:03,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6482 conditions, 699 events. 382/699 cut-off events. For 87479/87480 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3246 event pairs, 45 based on Foata normal form. 2/695 useless extension candidates. Maximal degree in co-relation 6380. Up to 523 conditions per place. [2024-06-27 23:18:03,677 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 134 selfloop transitions, 38 changer transitions 0/205 dead transitions. [2024-06-27 23:18:03,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 205 transitions, 2651 flow [2024-06-27 23:18:03,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:18:03,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:18:03,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-27 23:18:03,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 23:18:03,678 INFO L175 Difference]: Start difference. First operand has 214 places, 192 transitions, 2077 flow. Second operand 8 states and 128 transitions. [2024-06-27 23:18:03,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 205 transitions, 2651 flow [2024-06-27 23:18:03,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 205 transitions, 2566 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 23:18:03,796 INFO L231 Difference]: Finished difference. Result has 217 places, 196 transitions, 2149 flow [2024-06-27 23:18:03,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1992, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2149, PETRI_PLACES=217, PETRI_TRANSITIONS=196} [2024-06-27 23:18:03,797 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 186 predicate places. [2024-06-27 23:18:03,797 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 196 transitions, 2149 flow [2024-06-27 23:18:03,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:03,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:03,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:03,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 23:18:03,797 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)] === [2024-06-27 23:18:03,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:03,798 INFO L85 PathProgramCache]: Analyzing trace with hash 382742660, now seen corresponding path program 7 times [2024-06-27 23:18:03,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:03,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458334811] [2024-06-27 23:18:03,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:03,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:05,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:05,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:05,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458334811] [2024-06-27 23:18:05,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458334811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:05,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:05,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:18:05,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118142415] [2024-06-27 23:18:05,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:05,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:18:05,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:05,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:18:05,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:18:05,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:18:05,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 196 transitions, 2149 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) [2024-06-27 23:18:05,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:05,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:18:05,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:05,598 INFO L124 PetriNetUnfolderBase]: 400/719 cut-off events. [2024-06-27 23:18:05,598 INFO L125 PetriNetUnfolderBase]: For 86423/86423 co-relation queries the response was YES. [2024-06-27 23:18:05,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6620 conditions, 719 events. 400/719 cut-off events. For 86423/86423 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3255 event pairs, 46 based on Foata normal form. 1/716 useless extension candidates. Maximal degree in co-relation 6517. Up to 626 conditions per place. [2024-06-27 23:18:05,604 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 167 selfloop transitions, 33 changer transitions 0/204 dead transitions. [2024-06-27 23:18:05,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 204 transitions, 2567 flow [2024-06-27 23:18:05,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:18:05,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:18:05,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2024-06-27 23:18:05,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45703125 [2024-06-27 23:18:05,605 INFO L175 Difference]: Start difference. First operand has 217 places, 196 transitions, 2149 flow. Second operand 8 states and 117 transitions. [2024-06-27 23:18:05,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 204 transitions, 2567 flow [2024-06-27 23:18:05,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 204 transitions, 2468 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-27 23:18:05,747 INFO L231 Difference]: Finished difference. Result has 221 places, 196 transitions, 2121 flow [2024-06-27 23:18:05,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2050, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2121, PETRI_PLACES=221, PETRI_TRANSITIONS=196} [2024-06-27 23:18:05,748 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-27 23:18:05,748 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 196 transitions, 2121 flow [2024-06-27 23:18:05,748 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) [2024-06-27 23:18:05,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:05,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:05,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 23:18:05,749 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)] === [2024-06-27 23:18:05,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:05,749 INFO L85 PathProgramCache]: Analyzing trace with hash 382973052, now seen corresponding path program 8 times [2024-06-27 23:18:05,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:05,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599563941] [2024-06-27 23:18:05,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:05,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:07,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:07,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:07,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599563941] [2024-06-27 23:18:07,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599563941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:07,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:07,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:18:07,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735447433] [2024-06-27 23:18:07,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:07,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:18:07,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:07,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:18:07,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:18:07,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:18:07,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 196 transitions, 2121 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:07,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:07,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:18:07,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:07,966 INFO L124 PetriNetUnfolderBase]: 403/723 cut-off events. [2024-06-27 23:18:07,967 INFO L125 PetriNetUnfolderBase]: For 88693/88693 co-relation queries the response was YES. [2024-06-27 23:18:07,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6705 conditions, 723 events. 403/723 cut-off events. For 88693/88693 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3292 event pairs, 55 based on Foata normal form. 1/718 useless extension candidates. Maximal degree in co-relation 6599. Up to 540 conditions per place. [2024-06-27 23:18:07,973 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 137 selfloop transitions, 68 changer transitions 0/208 dead transitions. [2024-06-27 23:18:07,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 208 transitions, 2891 flow [2024-06-27 23:18:07,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:18:07,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:18:07,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-27 23:18:07,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-27 23:18:07,982 INFO L175 Difference]: Start difference. First operand has 221 places, 196 transitions, 2121 flow. Second operand 9 states and 124 transitions. [2024-06-27 23:18:07,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 208 transitions, 2891 flow [2024-06-27 23:18:08,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 208 transitions, 2807 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 23:18:08,124 INFO L231 Difference]: Finished difference. Result has 222 places, 198 transitions, 2236 flow [2024-06-27 23:18:08,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2037, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2236, PETRI_PLACES=222, PETRI_TRANSITIONS=198} [2024-06-27 23:18:08,125 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-27 23:18:08,125 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 198 transitions, 2236 flow [2024-06-27 23:18:08,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:08,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:08,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:08,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 23:18:08,129 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)] === [2024-06-27 23:18:08,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:08,135 INFO L85 PathProgramCache]: Analyzing trace with hash 382735902, now seen corresponding path program 9 times [2024-06-27 23:18:08,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:08,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963838110] [2024-06-27 23:18:08,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:08,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:09,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:09,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:09,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963838110] [2024-06-27 23:18:09,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963838110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:09,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:09,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:18:09,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024231770] [2024-06-27 23:18:09,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:09,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:18:09,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:09,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:18:09,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:18:09,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:18:09,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 198 transitions, 2236 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:09,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:09,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:18:09,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:09,665 INFO L124 PetriNetUnfolderBase]: 401/718 cut-off events. [2024-06-27 23:18:09,666 INFO L125 PetriNetUnfolderBase]: For 86707/86707 co-relation queries the response was YES. [2024-06-27 23:18:09,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6722 conditions, 718 events. 401/718 cut-off events. For 86707/86707 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3281 event pairs, 53 based on Foata normal form. 1/713 useless extension candidates. Maximal degree in co-relation 6614. Up to 553 conditions per place. [2024-06-27 23:18:09,672 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 143 selfloop transitions, 61 changer transitions 0/207 dead transitions. [2024-06-27 23:18:09,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 207 transitions, 2808 flow [2024-06-27 23:18:09,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:18:09,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:18:09,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-27 23:18:09,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-27 23:18:09,673 INFO L175 Difference]: Start difference. First operand has 222 places, 198 transitions, 2236 flow. Second operand 9 states and 119 transitions. [2024-06-27 23:18:09,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 207 transitions, 2808 flow [2024-06-27 23:18:09,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 207 transitions, 2589 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-27 23:18:09,829 INFO L231 Difference]: Finished difference. Result has 224 places, 198 transitions, 2144 flow [2024-06-27 23:18:09,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2017, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2144, PETRI_PLACES=224, PETRI_TRANSITIONS=198} [2024-06-27 23:18:09,830 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 193 predicate places. [2024-06-27 23:18:09,830 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 198 transitions, 2144 flow [2024-06-27 23:18:09,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:09,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:09,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:09,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 23:18:09,831 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)] === [2024-06-27 23:18:09,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:09,831 INFO L85 PathProgramCache]: Analyzing trace with hash 678200870, now seen corresponding path program 8 times [2024-06-27 23:18:09,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:09,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036994896] [2024-06-27 23:18:09,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:09,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:12,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:12,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:12,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036994896] [2024-06-27 23:18:12,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036994896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:12,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:12,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:18:12,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752777276] [2024-06-27 23:18:12,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:12,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:18:12,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:12,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:18:12,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:18:12,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:18:12,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 198 transitions, 2144 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:12,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:12,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:18:12,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:12,613 INFO L124 PetriNetUnfolderBase]: 404/725 cut-off events. [2024-06-27 23:18:12,614 INFO L125 PetriNetUnfolderBase]: For 90830/90830 co-relation queries the response was YES. [2024-06-27 23:18:12,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6711 conditions, 725 events. 404/725 cut-off events. For 90830/90830 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3289 event pairs, 60 based on Foata normal form. 1/724 useless extension candidates. Maximal degree in co-relation 6602. Up to 681 conditions per place. [2024-06-27 23:18:12,620 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 189 selfloop transitions, 16 changer transitions 0/208 dead transitions. [2024-06-27 23:18:12,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 208 transitions, 2614 flow [2024-06-27 23:18:12,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:18:12,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:18:12,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 23:18:12,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680555555555556 [2024-06-27 23:18:12,622 INFO L175 Difference]: Start difference. First operand has 224 places, 198 transitions, 2144 flow. Second operand 9 states and 106 transitions. [2024-06-27 23:18:12,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 208 transitions, 2614 flow [2024-06-27 23:18:12,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 208 transitions, 2487 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 23:18:12,802 INFO L231 Difference]: Finished difference. Result has 225 places, 200 transitions, 2100 flow [2024-06-27 23:18:12,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2017, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2100, PETRI_PLACES=225, PETRI_TRANSITIONS=200} [2024-06-27 23:18:12,803 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-27 23:18:12,803 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 200 transitions, 2100 flow [2024-06-27 23:18:12,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:12,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:12,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:12,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 23:18:12,804 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)] === [2024-06-27 23:18:12,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:12,804 INFO L85 PathProgramCache]: Analyzing trace with hash 678557370, now seen corresponding path program 5 times [2024-06-27 23:18:12,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:12,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264358478] [2024-06-27 23:18:12,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:12,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:15,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:15,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:15,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264358478] [2024-06-27 23:18:15,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264358478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:15,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:15,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:18:15,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992935082] [2024-06-27 23:18:15,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:15,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:18:15,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:15,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:18:15,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:18:15,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:18:15,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 200 transitions, 2100 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) [2024-06-27 23:18:15,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:15,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:18:15,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:15,845 INFO L124 PetriNetUnfolderBase]: 381/697 cut-off events. [2024-06-27 23:18:15,845 INFO L125 PetriNetUnfolderBase]: For 91645/91646 co-relation queries the response was YES. [2024-06-27 23:18:15,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6410 conditions, 697 events. 381/697 cut-off events. For 91645/91646 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3241 event pairs, 53 based on Foata normal form. 2/692 useless extension candidates. Maximal degree in co-relation 6300. Up to 575 conditions per place. [2024-06-27 23:18:15,852 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 156 selfloop transitions, 20 changer transitions 0/209 dead transitions. [2024-06-27 23:18:15,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 209 transitions, 2472 flow [2024-06-27 23:18:15,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:18:15,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:18:15,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 23:18:15,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-27 23:18:15,853 INFO L175 Difference]: Start difference. First operand has 225 places, 200 transitions, 2100 flow. Second operand 11 states and 134 transitions. [2024-06-27 23:18:15,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 209 transitions, 2472 flow [2024-06-27 23:18:16,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 209 transitions, 2387 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-27 23:18:16,034 INFO L231 Difference]: Finished difference. Result has 229 places, 200 transitions, 2060 flow [2024-06-27 23:18:16,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2015, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2060, PETRI_PLACES=229, PETRI_TRANSITIONS=200} [2024-06-27 23:18:16,035 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 198 predicate places. [2024-06-27 23:18:16,035 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 200 transitions, 2060 flow [2024-06-27 23:18:16,035 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) [2024-06-27 23:18:16,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:16,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:16,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 23:18:16,036 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)] === [2024-06-27 23:18:16,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:16,037 INFO L85 PathProgramCache]: Analyzing trace with hash -803604472, now seen corresponding path program 9 times [2024-06-27 23:18:16,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:16,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985141325] [2024-06-27 23:18:16,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:16,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:17,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:17,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:17,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985141325] [2024-06-27 23:18:17,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985141325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:17,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:17,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:18:17,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511619076] [2024-06-27 23:18:17,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:17,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:18:17,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:17,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:18:17,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:18:17,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:18:17,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 200 transitions, 2060 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) [2024-06-27 23:18:17,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:17,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:18:17,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:17,866 INFO L124 PetriNetUnfolderBase]: 413/742 cut-off events. [2024-06-27 23:18:17,866 INFO L125 PetriNetUnfolderBase]: For 98726/98726 co-relation queries the response was YES. [2024-06-27 23:18:17,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6825 conditions, 742 events. 413/742 cut-off events. For 98726/98726 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3404 event pairs, 45 based on Foata normal form. 2/739 useless extension candidates. Maximal degree in co-relation 6715. Up to 495 conditions per place. [2024-06-27 23:18:17,872 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 144 selfloop transitions, 71 changer transitions 0/219 dead transitions. [2024-06-27 23:18:17,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 219 transitions, 2986 flow [2024-06-27 23:18:17,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:18:17,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:18:17,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-27 23:18:17,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 23:18:17,873 INFO L175 Difference]: Start difference. First operand has 229 places, 200 transitions, 2060 flow. Second operand 8 states and 128 transitions. [2024-06-27 23:18:17,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 219 transitions, 2986 flow [2024-06-27 23:18:18,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 219 transitions, 2919 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 23:18:18,032 INFO L231 Difference]: Finished difference. Result has 225 places, 206 transitions, 2264 flow [2024-06-27 23:18:18,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1993, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2264, PETRI_PLACES=225, PETRI_TRANSITIONS=206} [2024-06-27 23:18:18,033 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-27 23:18:18,033 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 206 transitions, 2264 flow [2024-06-27 23:18:18,033 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) [2024-06-27 23:18:18,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:18,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:18,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 23:18:18,034 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)] === [2024-06-27 23:18:18,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:18,034 INFO L85 PathProgramCache]: Analyzing trace with hash -526548420, now seen corresponding path program 10 times [2024-06-27 23:18:18,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:18,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622329082] [2024-06-27 23:18:18,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:18,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:19,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:19,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:19,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622329082] [2024-06-27 23:18:19,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622329082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:19,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:19,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:18:19,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009446362] [2024-06-27 23:18:19,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:19,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:18:19,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:19,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:18:19,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:18:19,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:18:19,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 206 transitions, 2264 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:19,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:19,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:18:19,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:20,152 INFO L124 PetriNetUnfolderBase]: 421/753 cut-off events. [2024-06-27 23:18:20,153 INFO L125 PetriNetUnfolderBase]: For 101864/101864 co-relation queries the response was YES. [2024-06-27 23:18:20,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7208 conditions, 753 events. 421/753 cut-off events. For 101864/101864 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3462 event pairs, 55 based on Foata normal form. 1/748 useless extension candidates. Maximal degree in co-relation 7099. Up to 484 conditions per place. [2024-06-27 23:18:20,159 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 120 selfloop transitions, 98 changer transitions 0/221 dead transitions. [2024-06-27 23:18:20,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 221 transitions, 3158 flow [2024-06-27 23:18:20,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:18:20,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:18:20,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-27 23:18:20,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-27 23:18:20,161 INFO L175 Difference]: Start difference. First operand has 225 places, 206 transitions, 2264 flow. Second operand 9 states and 124 transitions. [2024-06-27 23:18:20,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 221 transitions, 3158 flow [2024-06-27 23:18:20,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 221 transitions, 3071 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-27 23:18:20,322 INFO L231 Difference]: Finished difference. Result has 232 places, 211 transitions, 2574 flow [2024-06-27 23:18:20,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2177, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2574, PETRI_PLACES=232, PETRI_TRANSITIONS=211} [2024-06-27 23:18:20,322 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-27 23:18:20,323 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 211 transitions, 2574 flow [2024-06-27 23:18:20,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:20,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:20,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:20,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 23:18:20,323 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)] === [2024-06-27 23:18:20,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:20,324 INFO L85 PathProgramCache]: Analyzing trace with hash 668081540, now seen corresponding path program 10 times [2024-06-27 23:18:20,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:20,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166486513] [2024-06-27 23:18:20,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:20,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:22,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:22,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:22,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166486513] [2024-06-27 23:18:22,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166486513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:22,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:22,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:18:22,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357324121] [2024-06-27 23:18:22,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:22,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:18:22,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:22,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:18:22,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:18:22,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:18:22,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 211 transitions, 2574 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) [2024-06-27 23:18:22,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:22,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:18:22,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:22,512 INFO L124 PetriNetUnfolderBase]: 419/749 cut-off events. [2024-06-27 23:18:22,513 INFO L125 PetriNetUnfolderBase]: For 100878/100878 co-relation queries the response was YES. [2024-06-27 23:18:22,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7356 conditions, 749 events. 419/749 cut-off events. For 100878/100878 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3413 event pairs, 47 based on Foata normal form. 1/746 useless extension candidates. Maximal degree in co-relation 7244. Up to 564 conditions per place. [2024-06-27 23:18:22,519 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 156 selfloop transitions, 66 changer transitions 0/226 dead transitions. [2024-06-27 23:18:22,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 226 transitions, 3152 flow [2024-06-27 23:18:22,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:18:22,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:18:22,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-27 23:18:22,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48046875 [2024-06-27 23:18:22,520 INFO L175 Difference]: Start difference. First operand has 232 places, 211 transitions, 2574 flow. Second operand 8 states and 123 transitions. [2024-06-27 23:18:22,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 226 transitions, 3152 flow [2024-06-27 23:18:22,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 226 transitions, 3006 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-27 23:18:22,724 INFO L231 Difference]: Finished difference. Result has 237 places, 218 transitions, 2734 flow [2024-06-27 23:18:22,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2428, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2734, PETRI_PLACES=237, PETRI_TRANSITIONS=218} [2024-06-27 23:18:22,727 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-27 23:18:22,727 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 218 transitions, 2734 flow [2024-06-27 23:18:22,727 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) [2024-06-27 23:18:22,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:22,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:22,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 23:18:22,728 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)] === [2024-06-27 23:18:22,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:22,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1957822052, now seen corresponding path program 6 times [2024-06-27 23:18:22,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:22,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837191953] [2024-06-27 23:18:22,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:22,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:23,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:23,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:23,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837191953] [2024-06-27 23:18:23,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837191953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:23,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:23,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:18:23,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275690416] [2024-06-27 23:18:23,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:23,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:18:23,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:23,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:18:23,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:18:23,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:18:23,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 218 transitions, 2734 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:23,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:23,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:18:23,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:24,142 INFO L124 PetriNetUnfolderBase]: 430/775 cut-off events. [2024-06-27 23:18:24,142 INFO L125 PetriNetUnfolderBase]: For 100585/100585 co-relation queries the response was YES. [2024-06-27 23:18:24,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7638 conditions, 775 events. 430/775 cut-off events. For 100585/100585 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3651 event pairs, 41 based on Foata normal form. 1/774 useless extension candidates. Maximal degree in co-relation 7522. Up to 665 conditions per place. [2024-06-27 23:18:24,149 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 205 selfloop transitions, 32 changer transitions 0/240 dead transitions. [2024-06-27 23:18:24,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 240 transitions, 3349 flow [2024-06-27 23:18:24,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:18:24,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:18:24,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-27 23:18:24,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201388888888889 [2024-06-27 23:18:24,150 INFO L175 Difference]: Start difference. First operand has 237 places, 218 transitions, 2734 flow. Second operand 9 states and 121 transitions. [2024-06-27 23:18:24,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 240 transitions, 3349 flow [2024-06-27 23:18:24,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 240 transitions, 3246 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-27 23:18:24,328 INFO L231 Difference]: Finished difference. Result has 243 places, 224 transitions, 2801 flow [2024-06-27 23:18:24,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2631, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2801, PETRI_PLACES=243, PETRI_TRANSITIONS=224} [2024-06-27 23:18:24,328 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 212 predicate places. [2024-06-27 23:18:24,328 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 224 transitions, 2801 flow [2024-06-27 23:18:24,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:24,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:24,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:24,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 23:18:24,329 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)] === [2024-06-27 23:18:24,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:24,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1523434050, now seen corresponding path program 7 times [2024-06-27 23:18:24,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:24,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500244010] [2024-06-27 23:18:24,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:24,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:25,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:25,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:25,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500244010] [2024-06-27 23:18:25,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500244010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:25,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:25,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:18:25,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110473368] [2024-06-27 23:18:25,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:25,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:18:25,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:25,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:18:25,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:18:25,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:18:25,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 224 transitions, 2801 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:25,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:25,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:18:25,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:25,557 INFO L124 PetriNetUnfolderBase]: 437/790 cut-off events. [2024-06-27 23:18:25,557 INFO L125 PetriNetUnfolderBase]: For 104143/104143 co-relation queries the response was YES. [2024-06-27 23:18:25,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7790 conditions, 790 events. 437/790 cut-off events. For 104143/104143 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3767 event pairs, 39 based on Foata normal form. 1/789 useless extension candidates. Maximal degree in co-relation 7672. Up to 675 conditions per place. [2024-06-27 23:18:25,565 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 203 selfloop transitions, 40 changer transitions 0/246 dead transitions. [2024-06-27 23:18:25,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 246 transitions, 3420 flow [2024-06-27 23:18:25,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:25,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:25,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 23:18:25,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:18:25,567 INFO L175 Difference]: Start difference. First operand has 243 places, 224 transitions, 2801 flow. Second operand 10 states and 128 transitions. [2024-06-27 23:18:25,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 246 transitions, 3420 flow [2024-06-27 23:18:25,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 246 transitions, 3333 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-27 23:18:25,755 INFO L231 Difference]: Finished difference. Result has 249 places, 228 transitions, 2888 flow [2024-06-27 23:18:25,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2716, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2888, PETRI_PLACES=249, PETRI_TRANSITIONS=228} [2024-06-27 23:18:25,756 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-27 23:18:25,756 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 228 transitions, 2888 flow [2024-06-27 23:18:25,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:25,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:25,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:25,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 23:18:25,756 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)] === [2024-06-27 23:18:25,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:25,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1133176646, now seen corresponding path program 8 times [2024-06-27 23:18:25,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:25,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597395690] [2024-06-27 23:18:25,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:25,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:26,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:26,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:26,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597395690] [2024-06-27 23:18:26,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597395690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:26,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:26,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:18:26,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375377839] [2024-06-27 23:18:26,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:26,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:18:26,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:26,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:18:26,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:18:26,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:18:26,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 228 transitions, 2888 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:26,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:26,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:18:26,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:27,045 INFO L124 PetriNetUnfolderBase]: 440/795 cut-off events. [2024-06-27 23:18:27,045 INFO L125 PetriNetUnfolderBase]: For 105910/105910 co-relation queries the response was YES. [2024-06-27 23:18:27,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7890 conditions, 795 events. 440/795 cut-off events. For 105910/105910 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3805 event pairs, 40 based on Foata normal form. 1/794 useless extension candidates. Maximal degree in co-relation 7770. Up to 680 conditions per place. [2024-06-27 23:18:27,053 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 207 selfloop transitions, 37 changer transitions 0/247 dead transitions. [2024-06-27 23:18:27,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 247 transitions, 3487 flow [2024-06-27 23:18:27,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:27,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:27,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 23:18:27,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:18:27,054 INFO L175 Difference]: Start difference. First operand has 249 places, 228 transitions, 2888 flow. Second operand 10 states and 128 transitions. [2024-06-27 23:18:27,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 247 transitions, 3487 flow [2024-06-27 23:18:27,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 247 transitions, 3360 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 23:18:27,259 INFO L231 Difference]: Finished difference. Result has 251 places, 230 transitions, 2909 flow [2024-06-27 23:18:27,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2761, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2909, PETRI_PLACES=251, PETRI_TRANSITIONS=230} [2024-06-27 23:18:27,259 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-27 23:18:27,259 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 230 transitions, 2909 flow [2024-06-27 23:18:27,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:27,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:27,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:27,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 23:18:27,260 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)] === [2024-06-27 23:18:27,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:27,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1129484546, now seen corresponding path program 9 times [2024-06-27 23:18:27,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:27,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893547348] [2024-06-27 23:18:27,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:27,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:28,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:28,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:28,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893547348] [2024-06-27 23:18:28,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893547348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:28,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:28,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:18:28,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441034720] [2024-06-27 23:18:28,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:28,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:18:28,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:28,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:18:28,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:18:28,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:18:28,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 230 transitions, 2909 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:28,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:28,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:18:28,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:28,730 INFO L124 PetriNetUnfolderBase]: 443/801 cut-off events. [2024-06-27 23:18:28,730 INFO L125 PetriNetUnfolderBase]: For 109500/109500 co-relation queries the response was YES. [2024-06-27 23:18:28,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7933 conditions, 801 events. 443/801 cut-off events. For 109500/109500 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3824 event pairs, 40 based on Foata normal form. 1/800 useless extension candidates. Maximal degree in co-relation 7813. Up to 676 conditions per place. [2024-06-27 23:18:28,738 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 203 selfloop transitions, 42 changer transitions 0/248 dead transitions. [2024-06-27 23:18:28,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 248 transitions, 3493 flow [2024-06-27 23:18:28,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:28,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:28,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 23:18:28,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:18:28,739 INFO L175 Difference]: Start difference. First operand has 251 places, 230 transitions, 2909 flow. Second operand 10 states and 128 transitions. [2024-06-27 23:18:28,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 248 transitions, 3493 flow [2024-06-27 23:18:28,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 248 transitions, 3383 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 23:18:28,954 INFO L231 Difference]: Finished difference. Result has 254 places, 232 transitions, 2944 flow [2024-06-27 23:18:28,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2799, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2944, PETRI_PLACES=254, PETRI_TRANSITIONS=232} [2024-06-27 23:18:28,962 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-27 23:18:28,962 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 232 transitions, 2944 flow [2024-06-27 23:18:28,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:28,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:28,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:28,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 23:18:28,963 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)] === [2024-06-27 23:18:28,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:28,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1129451810, now seen corresponding path program 11 times [2024-06-27 23:18:28,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:28,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441732022] [2024-06-27 23:18:28,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:28,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:28,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:30,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:30,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:30,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441732022] [2024-06-27 23:18:30,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441732022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:30,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:30,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:18:30,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496847000] [2024-06-27 23:18:30,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:30,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:18:30,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:30,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:18:30,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:18:30,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:18:30,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 232 transitions, 2944 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:30,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:30,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:18:30,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:30,411 INFO L124 PetriNetUnfolderBase]: 449/810 cut-off events. [2024-06-27 23:18:30,411 INFO L125 PetriNetUnfolderBase]: For 115656/115656 co-relation queries the response was YES. [2024-06-27 23:18:30,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8079 conditions, 810 events. 449/810 cut-off events. For 115656/115656 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3862 event pairs, 42 based on Foata normal form. 2/809 useless extension candidates. Maximal degree in co-relation 7958. Up to 681 conditions per place. [2024-06-27 23:18:30,418 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 205 selfloop transitions, 43 changer transitions 0/251 dead transitions. [2024-06-27 23:18:30,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 251 transitions, 3561 flow [2024-06-27 23:18:30,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:30,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:30,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 23:18:30,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-27 23:18:30,420 INFO L175 Difference]: Start difference. First operand has 254 places, 232 transitions, 2944 flow. Second operand 10 states and 129 transitions. [2024-06-27 23:18:30,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 251 transitions, 3561 flow [2024-06-27 23:18:30,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 251 transitions, 3436 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 23:18:30,640 INFO L231 Difference]: Finished difference. Result has 256 places, 235 transitions, 2998 flow [2024-06-27 23:18:30,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2819, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2998, PETRI_PLACES=256, PETRI_TRANSITIONS=235} [2024-06-27 23:18:30,641 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-27 23:18:30,641 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 235 transitions, 2998 flow [2024-06-27 23:18:30,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:30,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:30,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:30,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 23:18:30,642 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)] === [2024-06-27 23:18:30,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:30,642 INFO L85 PathProgramCache]: Analyzing trace with hash -202225540, now seen corresponding path program 12 times [2024-06-27 23:18:30,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:30,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903294323] [2024-06-27 23:18:30,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:30,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:31,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:31,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:31,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903294323] [2024-06-27 23:18:31,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903294323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:31,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:31,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:18:31,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202378255] [2024-06-27 23:18:31,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:31,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:18:31,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:31,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:18:31,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:18:32,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:18:32,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 235 transitions, 2998 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:32,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:32,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:18:32,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:32,369 INFO L124 PetriNetUnfolderBase]: 455/820 cut-off events. [2024-06-27 23:18:32,369 INFO L125 PetriNetUnfolderBase]: For 117809/117809 co-relation queries the response was YES. [2024-06-27 23:18:32,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8232 conditions, 820 events. 455/820 cut-off events. For 117809/117809 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3936 event pairs, 44 based on Foata normal form. 2/819 useless extension candidates. Maximal degree in co-relation 8110. Up to 696 conditions per place. [2024-06-27 23:18:32,377 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 211 selfloop transitions, 39 changer transitions 0/253 dead transitions. [2024-06-27 23:18:32,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 253 transitions, 3623 flow [2024-06-27 23:18:32,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:32,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:32,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-27 23:18:32,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 23:18:32,378 INFO L175 Difference]: Start difference. First operand has 256 places, 235 transitions, 2998 flow. Second operand 10 states and 130 transitions. [2024-06-27 23:18:32,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 253 transitions, 3623 flow [2024-06-27 23:18:32,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 253 transitions, 3479 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-27 23:18:32,579 INFO L231 Difference]: Finished difference. Result has 258 places, 238 transitions, 3030 flow [2024-06-27 23:18:32,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2854, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3030, PETRI_PLACES=258, PETRI_TRANSITIONS=238} [2024-06-27 23:18:32,580 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-27 23:18:32,580 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 238 transitions, 3030 flow [2024-06-27 23:18:32,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:32,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:32,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:32,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 23:18:32,581 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)] === [2024-06-27 23:18:32,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:32,582 INFO L85 PathProgramCache]: Analyzing trace with hash -202198756, now seen corresponding path program 10 times [2024-06-27 23:18:32,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:32,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743292565] [2024-06-27 23:18:32,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:32,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:33,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:33,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:33,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743292565] [2024-06-27 23:18:33,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743292565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:33,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:33,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:18:33,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587239510] [2024-06-27 23:18:33,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:33,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:18:33,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:33,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:18:33,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:18:33,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:18:33,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 238 transitions, 3030 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:33,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:33,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:18:33,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:34,264 INFO L124 PetriNetUnfolderBase]: 458/828 cut-off events. [2024-06-27 23:18:34,265 INFO L125 PetriNetUnfolderBase]: For 117133/117133 co-relation queries the response was YES. [2024-06-27 23:18:34,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8251 conditions, 828 events. 458/828 cut-off events. For 117133/117133 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3989 event pairs, 45 based on Foata normal form. 1/827 useless extension candidates. Maximal degree in co-relation 8128. Up to 704 conditions per place. [2024-06-27 23:18:34,272 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 214 selfloop transitions, 38 changer transitions 0/255 dead transitions. [2024-06-27 23:18:34,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 255 transitions, 3630 flow [2024-06-27 23:18:34,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:34,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:34,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 23:18:34,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-27 23:18:34,289 INFO L175 Difference]: Start difference. First operand has 258 places, 238 transitions, 3030 flow. Second operand 10 states and 129 transitions. [2024-06-27 23:18:34,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 255 transitions, 3630 flow [2024-06-27 23:18:34,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 255 transitions, 3487 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-27 23:18:34,528 INFO L231 Difference]: Finished difference. Result has 260 places, 240 transitions, 3028 flow [2024-06-27 23:18:34,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2887, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3028, PETRI_PLACES=260, PETRI_TRANSITIONS=240} [2024-06-27 23:18:34,528 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-27 23:18:34,529 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 240 transitions, 3028 flow [2024-06-27 23:18:34,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:34,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:34,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:34,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 23:18:34,529 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)] === [2024-06-27 23:18:34,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:34,530 INFO L85 PathProgramCache]: Analyzing trace with hash -59142250, now seen corresponding path program 13 times [2024-06-27 23:18:34,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:34,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810999380] [2024-06-27 23:18:34,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:34,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:35,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:35,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:35,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810999380] [2024-06-27 23:18:35,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810999380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:35,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:35,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:18:35,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393662181] [2024-06-27 23:18:35,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:35,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:18:35,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:35,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:18:35,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:18:35,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:18:35,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 240 transitions, 3028 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:35,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:35,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:18:35,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:36,226 INFO L124 PetriNetUnfolderBase]: 461/830 cut-off events. [2024-06-27 23:18:36,226 INFO L125 PetriNetUnfolderBase]: For 119669/119669 co-relation queries the response was YES. [2024-06-27 23:18:36,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8267 conditions, 830 events. 461/830 cut-off events. For 119669/119669 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4006 event pairs, 43 based on Foata normal form. 1/826 useless extension candidates. Maximal degree in co-relation 8143. Up to 694 conditions per place. [2024-06-27 23:18:36,234 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 207 selfloop transitions, 46 changer transitions 0/256 dead transitions. [2024-06-27 23:18:36,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 256 transitions, 3640 flow [2024-06-27 23:18:36,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:18:36,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:18:36,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-27 23:18:36,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201388888888889 [2024-06-27 23:18:36,235 INFO L175 Difference]: Start difference. First operand has 260 places, 240 transitions, 3028 flow. Second operand 9 states and 121 transitions. [2024-06-27 23:18:36,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 256 transitions, 3640 flow [2024-06-27 23:18:36,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 256 transitions, 3519 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 23:18:36,455 INFO L231 Difference]: Finished difference. Result has 261 places, 242 transitions, 3078 flow [2024-06-27 23:18:36,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2907, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3078, PETRI_PLACES=261, PETRI_TRANSITIONS=242} [2024-06-27 23:18:36,456 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-27 23:18:36,456 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 242 transitions, 3078 flow [2024-06-27 23:18:36,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:36,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:36,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:36,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 23:18:36,457 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)] === [2024-06-27 23:18:36,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:36,457 INFO L85 PathProgramCache]: Analyzing trace with hash -58308226, now seen corresponding path program 11 times [2024-06-27 23:18:36,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:36,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724616047] [2024-06-27 23:18:36,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:36,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:37,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:37,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:37,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724616047] [2024-06-27 23:18:37,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724616047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:37,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:37,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:18:37,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143215273] [2024-06-27 23:18:37,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:37,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:18:37,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:37,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:18:37,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:18:37,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:18:37,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 242 transitions, 3078 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:37,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:37,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:18:37,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:38,085 INFO L124 PetriNetUnfolderBase]: 464/840 cut-off events. [2024-06-27 23:18:38,085 INFO L125 PetriNetUnfolderBase]: For 122565/122565 co-relation queries the response was YES. [2024-06-27 23:18:38,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8354 conditions, 840 events. 464/840 cut-off events. For 122565/122565 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4078 event pairs, 43 based on Foata normal form. 1/839 useless extension candidates. Maximal degree in co-relation 8230. Up to 693 conditions per place. [2024-06-27 23:18:38,093 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 207 selfloop transitions, 48 changer transitions 0/258 dead transitions. [2024-06-27 23:18:38,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 258 transitions, 3684 flow [2024-06-27 23:18:38,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:18:38,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:18:38,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-27 23:18:38,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201388888888889 [2024-06-27 23:18:38,095 INFO L175 Difference]: Start difference. First operand has 261 places, 242 transitions, 3078 flow. Second operand 9 states and 121 transitions. [2024-06-27 23:18:38,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 258 transitions, 3684 flow [2024-06-27 23:18:38,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 258 transitions, 3535 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 23:18:38,344 INFO L231 Difference]: Finished difference. Result has 263 places, 244 transitions, 3094 flow [2024-06-27 23:18:38,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2929, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3094, PETRI_PLACES=263, PETRI_TRANSITIONS=244} [2024-06-27 23:18:38,344 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-27 23:18:38,344 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 244 transitions, 3094 flow [2024-06-27 23:18:38,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:38,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:38,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:38,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 23:18:38,345 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)] === [2024-06-27 23:18:38,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:38,345 INFO L85 PathProgramCache]: Analyzing trace with hash -58126690, now seen corresponding path program 14 times [2024-06-27 23:18:38,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:38,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012042871] [2024-06-27 23:18:38,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:38,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:39,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:39,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:39,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012042871] [2024-06-27 23:18:39,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012042871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:39,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:39,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:18:39,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537749839] [2024-06-27 23:18:39,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:39,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:18:39,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:39,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:18:39,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:18:39,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:18:39,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 244 transitions, 3094 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:39,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:39,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:18:39,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:40,114 INFO L124 PetriNetUnfolderBase]: 467/842 cut-off events. [2024-06-27 23:18:40,114 INFO L125 PetriNetUnfolderBase]: For 125394/125394 co-relation queries the response was YES. [2024-06-27 23:18:40,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8422 conditions, 842 events. 467/842 cut-off events. For 125394/125394 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4061 event pairs, 42 based on Foata normal form. 1/838 useless extension candidates. Maximal degree in co-relation 8297. Up to 684 conditions per place. [2024-06-27 23:18:40,123 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 202 selfloop transitions, 55 changer transitions 0/260 dead transitions. [2024-06-27 23:18:40,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 260 transitions, 3718 flow [2024-06-27 23:18:40,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:18:40,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:18:40,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-27 23:18:40,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-27 23:18:40,124 INFO L175 Difference]: Start difference. First operand has 263 places, 244 transitions, 3094 flow. Second operand 9 states and 123 transitions. [2024-06-27 23:18:40,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 260 transitions, 3718 flow [2024-06-27 23:18:40,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 260 transitions, 3573 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-27 23:18:40,389 INFO L231 Difference]: Finished difference. Result has 265 places, 246 transitions, 3142 flow [2024-06-27 23:18:40,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2949, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3142, PETRI_PLACES=265, PETRI_TRANSITIONS=246} [2024-06-27 23:18:40,390 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-27 23:18:40,390 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 246 transitions, 3142 flow [2024-06-27 23:18:40,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:40,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:40,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:40,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 23:18:40,391 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)] === [2024-06-27 23:18:40,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:40,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1851876320, now seen corresponding path program 12 times [2024-06-27 23:18:40,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:40,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618492692] [2024-06-27 23:18:40,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:40,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:41,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:41,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:41,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618492692] [2024-06-27 23:18:41,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618492692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:41,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:41,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:18:41,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947069838] [2024-06-27 23:18:41,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:41,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:18:41,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:41,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:18:41,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:18:41,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:18:41,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 246 transitions, 3142 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:41,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:41,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:18:41,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:41,790 INFO L124 PetriNetUnfolderBase]: 465/843 cut-off events. [2024-06-27 23:18:41,791 INFO L125 PetriNetUnfolderBase]: For 123963/123963 co-relation queries the response was YES. [2024-06-27 23:18:41,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8312 conditions, 843 events. 465/843 cut-off events. For 123963/123963 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4100 event pairs, 41 based on Foata normal form. 1/842 useless extension candidates. Maximal degree in co-relation 8186. Up to 722 conditions per place. [2024-06-27 23:18:41,799 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 224 selfloop transitions, 34 changer transitions 0/261 dead transitions. [2024-06-27 23:18:41,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 261 transitions, 3700 flow [2024-06-27 23:18:41,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:41,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:41,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 23:18:41,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:18:41,800 INFO L175 Difference]: Start difference. First operand has 265 places, 246 transitions, 3142 flow. Second operand 10 states and 128 transitions. [2024-06-27 23:18:41,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 261 transitions, 3700 flow [2024-06-27 23:18:42,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 261 transitions, 3513 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-27 23:18:42,045 INFO L231 Difference]: Finished difference. Result has 268 places, 246 transitions, 3028 flow [2024-06-27 23:18:42,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2955, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3028, PETRI_PLACES=268, PETRI_TRANSITIONS=246} [2024-06-27 23:18:42,045 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 237 predicate places. [2024-06-27 23:18:42,045 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 246 transitions, 3028 flow [2024-06-27 23:18:42,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:42,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:42,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:42,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 23:18:42,046 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)] === [2024-06-27 23:18:42,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:42,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1409097336, now seen corresponding path program 15 times [2024-06-27 23:18:42,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:42,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786384621] [2024-06-27 23:18:42,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:42,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:43,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:43,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:43,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786384621] [2024-06-27 23:18:43,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786384621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:43,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:43,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:18:43,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925027513] [2024-06-27 23:18:43,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:43,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:18:43,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:43,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:18:43,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:18:43,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:18:43,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 246 transitions, 3028 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:43,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:43,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:18:43,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:43,601 INFO L124 PetriNetUnfolderBase]: 466/845 cut-off events. [2024-06-27 23:18:43,604 INFO L125 PetriNetUnfolderBase]: For 126787/126787 co-relation queries the response was YES. [2024-06-27 23:18:43,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8183 conditions, 845 events. 466/845 cut-off events. For 126787/126787 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4121 event pairs, 41 based on Foata normal form. 2/845 useless extension candidates. Maximal degree in co-relation 8055. Up to 715 conditions per place. [2024-06-27 23:18:43,617 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 221 selfloop transitions, 38 changer transitions 0/262 dead transitions. [2024-06-27 23:18:43,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 262 transitions, 3662 flow [2024-06-27 23:18:43,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:43,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:43,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-27 23:18:43,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 23:18:43,618 INFO L175 Difference]: Start difference. First operand has 268 places, 246 transitions, 3028 flow. Second operand 10 states and 130 transitions. [2024-06-27 23:18:43,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 262 transitions, 3662 flow [2024-06-27 23:18:43,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 262 transitions, 3503 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 23:18:43,893 INFO L231 Difference]: Finished difference. Result has 270 places, 248 transitions, 3034 flow [2024-06-27 23:18:43,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2869, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3034, PETRI_PLACES=270, PETRI_TRANSITIONS=248} [2024-06-27 23:18:43,893 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 239 predicate places. [2024-06-27 23:18:43,894 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 248 transitions, 3034 flow [2024-06-27 23:18:43,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:43,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:43,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:43,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 23:18:43,894 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)] === [2024-06-27 23:18:43,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:43,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1851996290, now seen corresponding path program 13 times [2024-06-27 23:18:43,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:43,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621805827] [2024-06-27 23:18:43,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:43,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:45,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:45,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:45,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621805827] [2024-06-27 23:18:45,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621805827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:45,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:45,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:18:45,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700299379] [2024-06-27 23:18:45,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:45,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:18:45,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:45,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:18:45,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:18:45,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:18:45,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 248 transitions, 3034 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:45,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:45,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:18:45,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:45,568 INFO L124 PetriNetUnfolderBase]: 469/850 cut-off events. [2024-06-27 23:18:45,568 INFO L125 PetriNetUnfolderBase]: For 126659/126659 co-relation queries the response was YES. [2024-06-27 23:18:45,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8246 conditions, 850 events. 469/850 cut-off events. For 126659/126659 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4151 event pairs, 41 based on Foata normal form. 1/849 useless extension candidates. Maximal degree in co-relation 8117. Up to 723 conditions per place. [2024-06-27 23:18:45,576 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 225 selfloop transitions, 36 changer transitions 0/264 dead transitions. [2024-06-27 23:18:45,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 264 transitions, 3658 flow [2024-06-27 23:18:45,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:18:45,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:18:45,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-27 23:18:45,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-06-27 23:18:45,578 INFO L175 Difference]: Start difference. First operand has 270 places, 248 transitions, 3034 flow. Second operand 9 states and 122 transitions. [2024-06-27 23:18:45,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 264 transitions, 3658 flow [2024-06-27 23:18:45,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 264 transitions, 3503 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-27 23:18:45,814 INFO L231 Difference]: Finished difference. Result has 271 places, 250 transitions, 3024 flow [2024-06-27 23:18:45,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2879, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3024, PETRI_PLACES=271, PETRI_TRANSITIONS=250} [2024-06-27 23:18:45,814 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 240 predicate places. [2024-06-27 23:18:45,814 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 250 transitions, 3024 flow [2024-06-27 23:18:45,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:45,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:45,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:45,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 23:18:45,815 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)] === [2024-06-27 23:18:45,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:45,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1856644616, now seen corresponding path program 16 times [2024-06-27 23:18:45,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:45,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557143354] [2024-06-27 23:18:45,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:45,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:47,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:47,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:47,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557143354] [2024-06-27 23:18:47,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557143354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:47,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:47,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:18:47,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059360092] [2024-06-27 23:18:47,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:47,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:18:47,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:47,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:18:47,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:18:47,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:18:47,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 250 transitions, 3024 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:47,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:47,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:18:47,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:47,765 INFO L124 PetriNetUnfolderBase]: 477/863 cut-off events. [2024-06-27 23:18:47,765 INFO L125 PetriNetUnfolderBase]: For 133969/133969 co-relation queries the response was YES. [2024-06-27 23:18:47,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8481 conditions, 863 events. 477/863 cut-off events. For 133969/133969 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4206 event pairs, 41 based on Foata normal form. 1/862 useless extension candidates. Maximal degree in co-relation 8352. Up to 717 conditions per place. [2024-06-27 23:18:47,773 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 219 selfloop transitions, 46 changer transitions 0/268 dead transitions. [2024-06-27 23:18:47,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 268 transitions, 3936 flow [2024-06-27 23:18:47,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:47,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:47,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 23:18:47,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-27 23:18:47,775 INFO L175 Difference]: Start difference. First operand has 271 places, 250 transitions, 3024 flow. Second operand 10 states and 133 transitions. [2024-06-27 23:18:47,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 268 transitions, 3936 flow [2024-06-27 23:18:48,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 268 transitions, 3811 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-27 23:18:48,024 INFO L231 Difference]: Finished difference. Result has 274 places, 254 transitions, 3164 flow [2024-06-27 23:18:48,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2899, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3164, PETRI_PLACES=274, PETRI_TRANSITIONS=254} [2024-06-27 23:18:48,024 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-27 23:18:48,024 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 254 transitions, 3164 flow [2024-06-27 23:18:48,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:48,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:48,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:48,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 23:18:48,025 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)] === [2024-06-27 23:18:48,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:48,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1856637920, now seen corresponding path program 14 times [2024-06-27 23:18:48,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:48,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726898827] [2024-06-27 23:18:48,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:48,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:49,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:49,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:49,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726898827] [2024-06-27 23:18:49,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726898827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:49,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:49,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:18:49,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387832852] [2024-06-27 23:18:49,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:49,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:18:49,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:49,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:18:49,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:18:49,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:18:49,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 254 transitions, 3164 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:49,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:49,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:18:49,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:49,725 INFO L124 PetriNetUnfolderBase]: 480/870 cut-off events. [2024-06-27 23:18:49,725 INFO L125 PetriNetUnfolderBase]: For 136977/136977 co-relation queries the response was YES. [2024-06-27 23:18:49,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8567 conditions, 870 events. 480/870 cut-off events. For 136977/136977 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4263 event pairs, 41 based on Foata normal form. 1/869 useless extension candidates. Maximal degree in co-relation 8436. Up to 732 conditions per place. [2024-06-27 23:18:49,734 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 225 selfloop transitions, 41 changer transitions 0/269 dead transitions. [2024-06-27 23:18:49,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 269 transitions, 3798 flow [2024-06-27 23:18:49,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:49,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:49,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-27 23:18:49,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 23:18:49,735 INFO L175 Difference]: Start difference. First operand has 274 places, 254 transitions, 3164 flow. Second operand 10 states and 130 transitions. [2024-06-27 23:18:49,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 269 transitions, 3798 flow [2024-06-27 23:18:49,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 269 transitions, 3668 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-27 23:18:49,978 INFO L231 Difference]: Finished difference. Result has 278 places, 256 transitions, 3193 flow [2024-06-27 23:18:49,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3034, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3193, PETRI_PLACES=278, PETRI_TRANSITIONS=256} [2024-06-27 23:18:49,978 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 247 predicate places. [2024-06-27 23:18:49,978 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 256 transitions, 3193 flow [2024-06-27 23:18:49,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:49,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:49,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:49,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 23:18:49,979 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)] === [2024-06-27 23:18:49,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:49,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1856638106, now seen corresponding path program 17 times [2024-06-27 23:18:49,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:49,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377642556] [2024-06-27 23:18:49,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:49,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:51,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:51,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:51,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377642556] [2024-06-27 23:18:51,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377642556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:51,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:51,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:18:51,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683400568] [2024-06-27 23:18:51,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:51,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:18:51,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:51,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:18:51,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:18:51,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:18:51,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 256 transitions, 3193 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:51,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:51,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:18:51,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:51,644 INFO L124 PetriNetUnfolderBase]: 478/867 cut-off events. [2024-06-27 23:18:51,645 INFO L125 PetriNetUnfolderBase]: For 134854/134854 co-relation queries the response was YES. [2024-06-27 23:18:51,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8450 conditions, 867 events. 478/867 cut-off events. For 134854/134854 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4263 event pairs, 41 based on Foata normal form. 1/866 useless extension candidates. Maximal degree in co-relation 8317. Up to 732 conditions per place. [2024-06-27 23:18:51,653 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 226 selfloop transitions, 40 changer transitions 0/269 dead transitions. [2024-06-27 23:18:51,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 269 transitions, 3759 flow [2024-06-27 23:18:51,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:51,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:51,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-27 23:18:51,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 23:18:51,654 INFO L175 Difference]: Start difference. First operand has 278 places, 256 transitions, 3193 flow. Second operand 10 states and 130 transitions. [2024-06-27 23:18:51,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 269 transitions, 3759 flow [2024-06-27 23:18:51,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 269 transitions, 3564 flow, removed 58 selfloop flow, removed 8 redundant places. [2024-06-27 23:18:51,941 INFO L231 Difference]: Finished difference. Result has 280 places, 256 transitions, 3083 flow [2024-06-27 23:18:51,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2998, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3083, PETRI_PLACES=280, PETRI_TRANSITIONS=256} [2024-06-27 23:18:51,942 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 249 predicate places. [2024-06-27 23:18:51,942 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 256 transitions, 3083 flow [2024-06-27 23:18:51,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:51,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:51,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:51,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 23:18:51,943 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)] === [2024-06-27 23:18:51,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:51,943 INFO L85 PathProgramCache]: Analyzing trace with hash 2029134506, now seen corresponding path program 18 times [2024-06-27 23:18:51,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:51,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307971685] [2024-06-27 23:18:51,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:51,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:53,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:53,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:53,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307971685] [2024-06-27 23:18:53,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307971685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:53,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:53,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:18:53,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802489803] [2024-06-27 23:18:53,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:53,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:18:53,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:53,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:18:53,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:18:53,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:18:53,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 256 transitions, 3083 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:53,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:53,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:18:53,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:54,109 INFO L124 PetriNetUnfolderBase]: 486/881 cut-off events. [2024-06-27 23:18:54,110 INFO L125 PetriNetUnfolderBase]: For 142591/142591 co-relation queries the response was YES. [2024-06-27 23:18:54,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8700 conditions, 881 events. 486/881 cut-off events. For 142591/142591 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4347 event pairs, 47 based on Foata normal form. 1/880 useless extension candidates. Maximal degree in co-relation 8566. Up to 708 conditions per place. [2024-06-27 23:18:54,119 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 210 selfloop transitions, 60 changer transitions 0/273 dead transitions. [2024-06-27 23:18:54,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 273 transitions, 4015 flow [2024-06-27 23:18:54,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:54,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:54,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-27 23:18:54,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-27 23:18:54,121 INFO L175 Difference]: Start difference. First operand has 280 places, 256 transitions, 3083 flow. Second operand 10 states and 131 transitions. [2024-06-27 23:18:54,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 273 transitions, 4015 flow [2024-06-27 23:18:54,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 273 transitions, 3921 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:18:54,470 INFO L231 Difference]: Finished difference. Result has 281 places, 260 transitions, 3290 flow [2024-06-27 23:18:54,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2989, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3290, PETRI_PLACES=281, PETRI_TRANSITIONS=260} [2024-06-27 23:18:54,471 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-27 23:18:54,471 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 260 transitions, 3290 flow [2024-06-27 23:18:54,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:54,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:54,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:54,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 23:18:54,472 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)] === [2024-06-27 23:18:54,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:54,472 INFO L85 PathProgramCache]: Analyzing trace with hash 2029127810, now seen corresponding path program 15 times [2024-06-27 23:18:54,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:54,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51895858] [2024-06-27 23:18:54,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:54,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:55,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:55,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:55,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51895858] [2024-06-27 23:18:55,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51895858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:55,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:55,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:18:55,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015638605] [2024-06-27 23:18:55,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:55,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:18:55,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:55,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:18:55,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:18:55,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:18:55,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 260 transitions, 3290 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:55,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:55,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:18:55,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:56,088 INFO L124 PetriNetUnfolderBase]: 484/877 cut-off events. [2024-06-27 23:18:56,088 INFO L125 PetriNetUnfolderBase]: For 141118/141118 co-relation queries the response was YES. [2024-06-27 23:18:56,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8635 conditions, 877 events. 484/877 cut-off events. For 141118/141118 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4323 event pairs, 47 based on Foata normal form. 1/876 useless extension candidates. Maximal degree in co-relation 8500. Up to 697 conditions per place. [2024-06-27 23:18:56,097 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 207 selfloop transitions, 62 changer transitions 0/272 dead transitions. [2024-06-27 23:18:56,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 272 transitions, 3858 flow [2024-06-27 23:18:56,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:56,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:56,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 23:18:56,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:18:56,099 INFO L175 Difference]: Start difference. First operand has 281 places, 260 transitions, 3290 flow. Second operand 10 states and 128 transitions. [2024-06-27 23:18:56,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 272 transitions, 3858 flow [2024-06-27 23:18:56,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 272 transitions, 3692 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-27 23:18:56,449 INFO L231 Difference]: Finished difference. Result has 285 places, 260 transitions, 3253 flow [2024-06-27 23:18:56,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3124, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3253, PETRI_PLACES=285, PETRI_TRANSITIONS=260} [2024-06-27 23:18:56,450 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-27 23:18:56,450 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 260 transitions, 3253 flow [2024-06-27 23:18:56,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:56,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:56,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:56,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 23:18:56,451 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)] === [2024-06-27 23:18:56,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:56,451 INFO L85 PathProgramCache]: Analyzing trace with hash 2029365146, now seen corresponding path program 19 times [2024-06-27 23:18:56,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:56,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596474006] [2024-06-27 23:18:56,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:56,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:58,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:58,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596474006] [2024-06-27 23:18:58,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596474006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:58,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:58,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:18:58,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160756622] [2024-06-27 23:18:58,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:58,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:18:58,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:58,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:18:58,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:18:58,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:18:58,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 260 transitions, 3253 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:58,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:58,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:18:58,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:58,423 INFO L124 PetriNetUnfolderBase]: 482/874 cut-off events. [2024-06-27 23:18:58,423 INFO L125 PetriNetUnfolderBase]: For 138442/138442 co-relation queries the response was YES. [2024-06-27 23:18:58,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8515 conditions, 874 events. 482/874 cut-off events. For 138442/138442 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4308 event pairs, 47 based on Foata normal form. 1/873 useless extension candidates. Maximal degree in co-relation 8378. Up to 655 conditions per place. [2024-06-27 23:18:58,433 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 187 selfloop transitions, 83 changer transitions 0/273 dead transitions. [2024-06-27 23:18:58,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 273 transitions, 4017 flow [2024-06-27 23:18:58,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:58,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:58,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-27 23:18:58,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-27 23:18:58,434 INFO L175 Difference]: Start difference. First operand has 285 places, 260 transitions, 3253 flow. Second operand 10 states and 132 transitions. [2024-06-27 23:18:58,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 273 transitions, 4017 flow [2024-06-27 23:18:58,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 273 transitions, 3723 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-27 23:18:58,812 INFO L231 Difference]: Finished difference. Result has 285 places, 260 transitions, 3130 flow [2024-06-27 23:18:58,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2959, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3130, PETRI_PLACES=285, PETRI_TRANSITIONS=260} [2024-06-27 23:18:58,812 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-27 23:18:58,813 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 260 transitions, 3130 flow [2024-06-27 23:18:58,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:18:58,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:58,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:58,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 23:18:58,813 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)] === [2024-06-27 23:18:58,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:58,814 INFO L85 PathProgramCache]: Analyzing trace with hash 2029127996, now seen corresponding path program 20 times [2024-06-27 23:18:58,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:58,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066071870] [2024-06-27 23:18:58,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:58,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:00,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:00,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:00,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066071870] [2024-06-27 23:19:00,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066071870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:00,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:00,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:19:00,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817265927] [2024-06-27 23:19:00,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:00,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:19:00,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:00,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:19:00,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:19:00,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:19:00,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 260 transitions, 3130 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:19:00,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:00,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:19:00,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:00,555 INFO L124 PetriNetUnfolderBase]: 480/873 cut-off events. [2024-06-27 23:19:00,555 INFO L125 PetriNetUnfolderBase]: For 135822/135822 co-relation queries the response was YES. [2024-06-27 23:19:00,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8296 conditions, 873 events. 480/873 cut-off events. For 135822/135822 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4319 event pairs, 47 based on Foata normal form. 1/872 useless extension candidates. Maximal degree in co-relation 8159. Up to 706 conditions per place. [2024-06-27 23:19:00,564 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 212 selfloop transitions, 57 changer transitions 0/272 dead transitions. [2024-06-27 23:19:00,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 272 transitions, 3698 flow [2024-06-27 23:19:00,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:19:00,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:19:00,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 23:19:00,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:19:00,566 INFO L175 Difference]: Start difference. First operand has 285 places, 260 transitions, 3130 flow. Second operand 10 states and 128 transitions. [2024-06-27 23:19:00,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 272 transitions, 3698 flow [2024-06-27 23:19:00,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 272 transitions, 3163 flow, removed 70 selfloop flow, removed 13 redundant places. [2024-06-27 23:19:00,941 INFO L231 Difference]: Finished difference. Result has 282 places, 260 transitions, 2714 flow [2024-06-27 23:19:00,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2595, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2714, PETRI_PLACES=282, PETRI_TRANSITIONS=260} [2024-06-27 23:19:00,942 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-27 23:19:00,942 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 260 transitions, 2714 flow [2024-06-27 23:19:00,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-27 23:19:00,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:00,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:00,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 23:19:00,942 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)] === [2024-06-27 23:19:00,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:00,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1335050691, now seen corresponding path program 1 times [2024-06-27 23:19:00,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:00,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493164045] [2024-06-27 23:19:00,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:00,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:02,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:02,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:02,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493164045] [2024-06-27 23:19:02,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493164045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:02,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:02,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:19:02,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223767325] [2024-06-27 23:19:02,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:02,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:19:02,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:02,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:19:02,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:19:02,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:19:02,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 260 transitions, 2714 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) [2024-06-27 23:19:02,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:02,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:19:02,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:02,822 INFO L124 PetriNetUnfolderBase]: 492/890 cut-off events. [2024-06-27 23:19:02,822 INFO L125 PetriNetUnfolderBase]: For 149917/149917 co-relation queries the response was YES. [2024-06-27 23:19:02,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7932 conditions, 890 events. 492/890 cut-off events. For 149917/149917 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4391 event pairs, 41 based on Foata normal form. 4/890 useless extension candidates. Maximal degree in co-relation 7798. Up to 694 conditions per place. [2024-06-27 23:19:02,831 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 211 selfloop transitions, 65 changer transitions 0/279 dead transitions. [2024-06-27 23:19:02,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 279 transitions, 3378 flow [2024-06-27 23:19:02,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:19:02,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:19:02,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-27 23:19:02,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-27 23:19:02,832 INFO L175 Difference]: Start difference. First operand has 282 places, 260 transitions, 2714 flow. Second operand 10 states and 139 transitions. [2024-06-27 23:19:02,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 279 transitions, 3378 flow [2024-06-27 23:19:03,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 279 transitions, 3259 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 23:19:03,182 INFO L231 Difference]: Finished difference. Result has 283 places, 263 transitions, 2794 flow [2024-06-27 23:19:03,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2595, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2794, PETRI_PLACES=283, PETRI_TRANSITIONS=263} [2024-06-27 23:19:03,183 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 252 predicate places. [2024-06-27 23:19:03,185 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 263 transitions, 2794 flow [2024-06-27 23:19:03,186 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) [2024-06-27 23:19:03,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:03,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:03,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 23:19:03,186 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)] === [2024-06-27 23:19:03,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:03,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1335050474, now seen corresponding path program 1 times [2024-06-27 23:19:03,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:03,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112963193] [2024-06-27 23:19:03,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:03,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:04,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:04,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:04,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112963193] [2024-06-27 23:19:04,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112963193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:04,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:04,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:04,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980934596] [2024-06-27 23:19:04,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:04,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:04,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:04,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:04,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:04,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:19:04,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 263 transitions, 2794 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:04,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:04,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:19:04,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:05,435 INFO L124 PetriNetUnfolderBase]: 500/910 cut-off events. [2024-06-27 23:19:05,435 INFO L125 PetriNetUnfolderBase]: For 144659/144659 co-relation queries the response was YES. [2024-06-27 23:19:05,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8294 conditions, 910 events. 500/910 cut-off events. For 144659/144659 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4583 event pairs, 51 based on Foata normal form. 1/905 useless extension candidates. Maximal degree in co-relation 8159. Up to 762 conditions per place. [2024-06-27 23:19:05,444 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 234 selfloop transitions, 43 changer transitions 0/280 dead transitions. [2024-06-27 23:19:05,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 280 transitions, 3680 flow [2024-06-27 23:19:05,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:19:05,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:19:05,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-27 23:19:05,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-27 23:19:05,445 INFO L175 Difference]: Start difference. First operand has 283 places, 263 transitions, 2794 flow. Second operand 10 states and 131 transitions. [2024-06-27 23:19:05,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 280 transitions, 3680 flow [2024-06-27 23:19:05,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 280 transitions, 3509 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 23:19:05,857 INFO L231 Difference]: Finished difference. Result has 285 places, 267 transitions, 2818 flow [2024-06-27 23:19:05,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2623, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2818, PETRI_PLACES=285, PETRI_TRANSITIONS=267} [2024-06-27 23:19:05,858 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-27 23:19:05,858 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 267 transitions, 2818 flow [2024-06-27 23:19:05,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:05,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:05,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:05,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 23:19:05,858 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)] === [2024-06-27 23:19:05,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:05,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1335044894, now seen corresponding path program 2 times [2024-06-27 23:19:05,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:05,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078302955] [2024-06-27 23:19:05,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:05,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:07,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:07,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:07,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078302955] [2024-06-27 23:19:07,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078302955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:07,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:07,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:07,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563687200] [2024-06-27 23:19:07,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:07,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:07,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:07,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:07,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:07,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:19:07,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 267 transitions, 2818 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:07,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:07,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:19:07,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:07,836 INFO L124 PetriNetUnfolderBase]: 498/905 cut-off events. [2024-06-27 23:19:07,836 INFO L125 PetriNetUnfolderBase]: For 147676/147676 co-relation queries the response was YES. [2024-06-27 23:19:07,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8077 conditions, 905 events. 498/905 cut-off events. For 147676/147676 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4521 event pairs, 43 based on Foata normal form. 1/900 useless extension candidates. Maximal degree in co-relation 7941. Up to 769 conditions per place. [2024-06-27 23:19:07,848 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 237 selfloop transitions, 39 changer transitions 0/279 dead transitions. [2024-06-27 23:19:07,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 279 transitions, 3402 flow [2024-06-27 23:19:07,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:19:07,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:19:07,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 23:19:07,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-27 23:19:07,849 INFO L175 Difference]: Start difference. First operand has 285 places, 267 transitions, 2818 flow. Second operand 10 states and 129 transitions. [2024-06-27 23:19:07,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 279 transitions, 3402 flow [2024-06-27 23:19:08,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 279 transitions, 3271 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-27 23:19:08,307 INFO L231 Difference]: Finished difference. Result has 289 places, 267 transitions, 2770 flow [2024-06-27 23:19:08,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2687, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2770, PETRI_PLACES=289, PETRI_TRANSITIONS=267} [2024-06-27 23:19:08,308 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 258 predicate places. [2024-06-27 23:19:08,308 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 267 transitions, 2770 flow [2024-06-27 23:19:08,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:08,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:08,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:08,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 23:19:08,309 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)] === [2024-06-27 23:19:08,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:08,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1478941004, now seen corresponding path program 3 times [2024-06-27 23:19:08,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:08,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027002515] [2024-06-27 23:19:08,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:08,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:10,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:10,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027002515] [2024-06-27 23:19:10,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027002515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:10,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:10,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:10,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510264433] [2024-06-27 23:19:10,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:10,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:10,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:10,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:10,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:10,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:19:10,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 267 transitions, 2770 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:10,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:10,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:19:10,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:10,869 INFO L124 PetriNetUnfolderBase]: 506/920 cut-off events. [2024-06-27 23:19:10,869 INFO L125 PetriNetUnfolderBase]: For 151825/151825 co-relation queries the response was YES. [2024-06-27 23:19:10,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8340 conditions, 920 events. 506/920 cut-off events. For 151825/151825 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4613 event pairs, 49 based on Foata normal form. 1/915 useless extension candidates. Maximal degree in co-relation 8202. Up to 766 conditions per place. [2024-06-27 23:19:10,881 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 234 selfloop transitions, 46 changer transitions 0/283 dead transitions. [2024-06-27 23:19:10,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 283 transitions, 3670 flow [2024-06-27 23:19:10,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:19:10,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:19:10,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-27 23:19:10,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-27 23:19:10,882 INFO L175 Difference]: Start difference. First operand has 289 places, 267 transitions, 2770 flow. Second operand 11 states and 140 transitions. [2024-06-27 23:19:10,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 283 transitions, 3670 flow [2024-06-27 23:19:11,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 283 transitions, 3579 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 23:19:11,370 INFO L231 Difference]: Finished difference. Result has 291 places, 271 transitions, 2888 flow [2024-06-27 23:19:11,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2679, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2888, PETRI_PLACES=291, PETRI_TRANSITIONS=271} [2024-06-27 23:19:11,370 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 260 predicate places. [2024-06-27 23:19:11,370 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 271 transitions, 2888 flow [2024-06-27 23:19:11,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:11,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:11,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:11,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 23:19:11,371 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)] === [2024-06-27 23:19:11,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:11,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1478941221, now seen corresponding path program 2 times [2024-06-27 23:19:11,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:11,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658788745] [2024-06-27 23:19:11,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:11,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:12,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:12,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:12,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658788745] [2024-06-27 23:19:12,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658788745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:12,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:12,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:19:12,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185147188] [2024-06-27 23:19:12,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:12,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:19:12,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:12,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:19:12,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:19:13,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:19:13,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 271 transitions, 2888 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) [2024-06-27 23:19:13,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:13,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:19:13,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:13,421 INFO L124 PetriNetUnfolderBase]: 509/922 cut-off events. [2024-06-27 23:19:13,421 INFO L125 PetriNetUnfolderBase]: For 155092/155092 co-relation queries the response was YES. [2024-06-27 23:19:13,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8450 conditions, 922 events. 509/922 cut-off events. For 155092/155092 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4615 event pairs, 40 based on Foata normal form. 1/918 useless extension candidates. Maximal degree in co-relation 8311. Up to 738 conditions per place. [2024-06-27 23:19:13,431 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 217 selfloop transitions, 66 changer transitions 0/286 dead transitions. [2024-06-27 23:19:13,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 286 transitions, 3532 flow [2024-06-27 23:19:13,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:19:13,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:19:13,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-27 23:19:13,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-27 23:19:13,432 INFO L175 Difference]: Start difference. First operand has 291 places, 271 transitions, 2888 flow. Second operand 10 states and 135 transitions. [2024-06-27 23:19:13,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 286 transitions, 3532 flow [2024-06-27 23:19:13,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 286 transitions, 3420 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 23:19:13,855 INFO L231 Difference]: Finished difference. Result has 294 places, 273 transitions, 2965 flow [2024-06-27 23:19:13,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2776, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2965, PETRI_PLACES=294, PETRI_TRANSITIONS=273} [2024-06-27 23:19:13,855 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 263 predicate places. [2024-06-27 23:19:13,856 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 273 transitions, 2965 flow [2024-06-27 23:19:13,856 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) [2024-06-27 23:19:13,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:13,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:13,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 23:19:13,856 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)] === [2024-06-27 23:19:13,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:13,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1479150750, now seen corresponding path program 1 times [2024-06-27 23:19:13,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:13,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966494291] [2024-06-27 23:19:13,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:13,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:15,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:15,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:15,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966494291] [2024-06-27 23:19:15,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966494291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:15,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:15,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:15,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310019983] [2024-06-27 23:19:15,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:15,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:15,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:15,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:15,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:15,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:19:15,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 273 transitions, 2965 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) [2024-06-27 23:19:15,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:15,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:19:15,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:16,197 INFO L124 PetriNetUnfolderBase]: 512/932 cut-off events. [2024-06-27 23:19:16,197 INFO L125 PetriNetUnfolderBase]: For 157744/157744 co-relation queries the response was YES. [2024-06-27 23:19:16,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8612 conditions, 932 events. 512/932 cut-off events. For 157744/157744 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4718 event pairs, 49 based on Foata normal form. 1/931 useless extension candidates. Maximal degree in co-relation 8471. Up to 823 conditions per place. [2024-06-27 23:19:16,207 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 253 selfloop transitions, 32 changer transitions 0/288 dead transitions. [2024-06-27 23:19:16,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 288 transitions, 3603 flow [2024-06-27 23:19:16,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:19:16,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:19:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-27 23:19:16,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-27 23:19:16,208 INFO L175 Difference]: Start difference. First operand has 294 places, 273 transitions, 2965 flow. Second operand 9 states and 123 transitions. [2024-06-27 23:19:16,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 288 transitions, 3603 flow [2024-06-27 23:19:16,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 288 transitions, 3434 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 23:19:16,674 INFO L231 Difference]: Finished difference. Result has 295 places, 275 transitions, 2905 flow [2024-06-27 23:19:16,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2796, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2905, PETRI_PLACES=295, PETRI_TRANSITIONS=275} [2024-06-27 23:19:16,674 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-27 23:19:16,674 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 275 transitions, 2905 flow [2024-06-27 23:19:16,674 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) [2024-06-27 23:19:16,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:16,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:16,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 23:19:16,675 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)] === [2024-06-27 23:19:16,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:16,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1479150471, now seen corresponding path program 3 times [2024-06-27 23:19:16,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:16,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630852974] [2024-06-27 23:19:16,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:16,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:18,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:18,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:18,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630852974] [2024-06-27 23:19:18,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630852974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:18,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:18,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:18,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632424689] [2024-06-27 23:19:18,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:18,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:18,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:18,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:18,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:18,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:19:18,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 275 transitions, 2905 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) [2024-06-27 23:19:18,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:18,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:19:18,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:18,819 INFO L124 PetriNetUnfolderBase]: 528/957 cut-off events. [2024-06-27 23:19:18,819 INFO L125 PetriNetUnfolderBase]: For 176512/176512 co-relation queries the response was YES. [2024-06-27 23:19:18,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9016 conditions, 957 events. 528/957 cut-off events. For 176512/176512 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4851 event pairs, 38 based on Foata normal form. 2/954 useless extension candidates. Maximal degree in co-relation 8875. Up to 668 conditions per place. [2024-06-27 23:19:18,829 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 200 selfloop transitions, 92 changer transitions 0/295 dead transitions. [2024-06-27 23:19:18,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 295 transitions, 3859 flow [2024-06-27 23:19:18,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:19:18,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:19:18,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-06-27 23:19:18,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652777777777778 [2024-06-27 23:19:18,830 INFO L175 Difference]: Start difference. First operand has 295 places, 275 transitions, 2905 flow. Second operand 9 states and 134 transitions. [2024-06-27 23:19:18,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 295 transitions, 3859 flow [2024-06-27 23:19:19,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 295 transitions, 3778 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 23:19:19,381 INFO L231 Difference]: Finished difference. Result has 297 places, 279 transitions, 3102 flow [2024-06-27 23:19:19,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2824, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3102, PETRI_PLACES=297, PETRI_TRANSITIONS=279} [2024-06-27 23:19:19,382 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 266 predicate places. [2024-06-27 23:19:19,382 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 279 transitions, 3102 flow [2024-06-27 23:19:19,382 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) [2024-06-27 23:19:19,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:19,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:19,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 23:19:19,382 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)] === [2024-06-27 23:19:19,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:19,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1479142814, now seen corresponding path program 4 times [2024-06-27 23:19:19,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:19,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785239171] [2024-06-27 23:19:19,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:19,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:21,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:21,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:21,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785239171] [2024-06-27 23:19:21,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785239171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:21,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:21,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:19:21,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954262891] [2024-06-27 23:19:21,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:21,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:19:21,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:21,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:19:21,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:19:22,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:19:22,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 279 transitions, 3102 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:22,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:22,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:19:22,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:22,564 INFO L124 PetriNetUnfolderBase]: 531/963 cut-off events. [2024-06-27 23:19:22,564 INFO L125 PetriNetUnfolderBase]: For 175847/175847 co-relation queries the response was YES. [2024-06-27 23:19:22,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9268 conditions, 963 events. 531/963 cut-off events. For 175847/175847 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4916 event pairs, 48 based on Foata normal form. 1/958 useless extension candidates. Maximal degree in co-relation 9126. Up to 786 conditions per place. [2024-06-27 23:19:22,575 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 234 selfloop transitions, 56 changer transitions 0/293 dead transitions. [2024-06-27 23:19:22,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 293 transitions, 3980 flow [2024-06-27 23:19:22,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:19:22,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:19:22,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-27 23:19:22,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-27 23:19:22,576 INFO L175 Difference]: Start difference. First operand has 297 places, 279 transitions, 3102 flow. Second operand 11 states and 140 transitions. [2024-06-27 23:19:22,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 293 transitions, 3980 flow [2024-06-27 23:19:23,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 293 transitions, 3825 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-27 23:19:23,155 INFO L231 Difference]: Finished difference. Result has 303 places, 281 transitions, 3126 flow [2024-06-27 23:19:23,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2947, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3126, PETRI_PLACES=303, PETRI_TRANSITIONS=281} [2024-06-27 23:19:23,155 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 272 predicate places. [2024-06-27 23:19:23,156 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 281 transitions, 3126 flow [2024-06-27 23:19:23,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:23,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:23,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:23,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 23:19:23,156 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)] === [2024-06-27 23:19:23,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:23,157 INFO L85 PathProgramCache]: Analyzing trace with hash 161250014, now seen corresponding path program 5 times [2024-06-27 23:19:23,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:23,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320287695] [2024-06-27 23:19:23,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:23,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:24,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:24,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:24,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320287695] [2024-06-27 23:19:24,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320287695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:24,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:24,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:19:24,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303856993] [2024-06-27 23:19:24,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:24,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:19:24,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:24,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:19:24,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:19:24,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:19:24,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 281 transitions, 3126 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:24,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:24,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:19:24,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:25,356 INFO L124 PetriNetUnfolderBase]: 529/960 cut-off events. [2024-06-27 23:19:25,357 INFO L125 PetriNetUnfolderBase]: For 173224/173224 co-relation queries the response was YES. [2024-06-27 23:19:25,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9166 conditions, 960 events. 529/960 cut-off events. For 173224/173224 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4871 event pairs, 48 based on Foata normal form. 1/955 useless extension candidates. Maximal degree in co-relation 9021. Up to 811 conditions per place. [2024-06-27 23:19:25,365 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 246 selfloop transitions, 43 changer transitions 0/292 dead transitions. [2024-06-27 23:19:25,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 292 transitions, 3732 flow [2024-06-27 23:19:25,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:19:25,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:19:25,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-27 23:19:25,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-27 23:19:25,380 INFO L175 Difference]: Start difference. First operand has 303 places, 281 transitions, 3126 flow. Second operand 11 states and 137 transitions. [2024-06-27 23:19:25,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 292 transitions, 3732 flow [2024-06-27 23:19:25,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 292 transitions, 3535 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-27 23:19:25,978 INFO L231 Difference]: Finished difference. Result has 305 places, 281 transitions, 3020 flow [2024-06-27 23:19:25,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2929, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3020, PETRI_PLACES=305, PETRI_TRANSITIONS=281} [2024-06-27 23:19:25,992 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 274 predicate places. [2024-06-27 23:19:25,992 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 281 transitions, 3020 flow [2024-06-27 23:19:25,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:25,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:25,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:25,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 23:19:25,993 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)] === [2024-06-27 23:19:26,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:26,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1276235645, now seen corresponding path program 4 times [2024-06-27 23:19:26,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:26,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006328337] [2024-06-27 23:19:26,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:26,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:27,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:27,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006328337] [2024-06-27 23:19:27,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006328337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:27,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:27,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:27,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123292540] [2024-06-27 23:19:27,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:27,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:27,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:27,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:27,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:27,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:19:27,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 281 transitions, 3020 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) [2024-06-27 23:19:27,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:27,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:19:27,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:28,013 INFO L124 PetriNetUnfolderBase]: 530/963 cut-off events. [2024-06-27 23:19:28,013 INFO L125 PetriNetUnfolderBase]: For 181538/181538 co-relation queries the response was YES. [2024-06-27 23:19:28,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8999 conditions, 963 events. 530/963 cut-off events. For 181538/181538 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4884 event pairs, 25 based on Foata normal form. 2/960 useless extension candidates. Maximal degree in co-relation 8853. Up to 673 conditions per place. [2024-06-27 23:19:28,024 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 210 selfloop transitions, 87 changer transitions 0/300 dead transitions. [2024-06-27 23:19:28,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 300 transitions, 3968 flow [2024-06-27 23:19:28,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:19:28,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:19:28,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-27 23:19:28,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-27 23:19:28,026 INFO L175 Difference]: Start difference. First operand has 305 places, 281 transitions, 3020 flow. Second operand 9 states and 135 transitions. [2024-06-27 23:19:28,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 300 transitions, 3968 flow [2024-06-27 23:19:28,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 300 transitions, 3873 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 23:19:28,586 INFO L231 Difference]: Finished difference. Result has 304 places, 283 transitions, 3146 flow [2024-06-27 23:19:28,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2925, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3146, PETRI_PLACES=304, PETRI_TRANSITIONS=283} [2024-06-27 23:19:28,586 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-27 23:19:28,586 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 283 transitions, 3146 flow [2024-06-27 23:19:28,586 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) [2024-06-27 23:19:28,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:28,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:28,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 23:19:28,587 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)] === [2024-06-27 23:19:28,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:28,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1756447691, now seen corresponding path program 5 times [2024-06-27 23:19:28,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:28,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780283851] [2024-06-27 23:19:28,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:28,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:30,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:30,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:30,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780283851] [2024-06-27 23:19:30,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780283851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:30,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:30,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:30,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692502485] [2024-06-27 23:19:30,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:30,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:30,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:30,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:30,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:30,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:19:30,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 283 transitions, 3146 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) [2024-06-27 23:19:30,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:30,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:19:30,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:31,026 INFO L124 PetriNetUnfolderBase]: 558/1009 cut-off events. [2024-06-27 23:19:31,026 INFO L125 PetriNetUnfolderBase]: For 204066/204066 co-relation queries the response was YES. [2024-06-27 23:19:31,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10182 conditions, 1009 events. 558/1009 cut-off events. For 204066/204066 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5158 event pairs, 43 based on Foata normal form. 1/1008 useless extension candidates. Maximal degree in co-relation 10036. Up to 584 conditions per place. [2024-06-27 23:19:31,037 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 191 selfloop transitions, 118 changer transitions 0/312 dead transitions. [2024-06-27 23:19:31,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 312 transitions, 4787 flow [2024-06-27 23:19:31,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:19:31,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:19:31,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-27 23:19:31,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 23:19:31,039 INFO L175 Difference]: Start difference. First operand has 304 places, 283 transitions, 3146 flow. Second operand 9 states and 136 transitions. [2024-06-27 23:19:31,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 312 transitions, 4787 flow [2024-06-27 23:19:31,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 312 transitions, 4601 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 23:19:31,687 INFO L231 Difference]: Finished difference. Result has 308 places, 297 transitions, 3587 flow [2024-06-27 23:19:31,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2985, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3587, PETRI_PLACES=308, PETRI_TRANSITIONS=297} [2024-06-27 23:19:31,688 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-27 23:19:31,688 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 297 transitions, 3587 flow [2024-06-27 23:19:31,688 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) [2024-06-27 23:19:31,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:31,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:31,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 23:19:31,689 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)] === [2024-06-27 23:19:31,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:31,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1756455348, now seen corresponding path program 6 times [2024-06-27 23:19:31,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:31,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74202246] [2024-06-27 23:19:31,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:31,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:33,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:33,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:33,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74202246] [2024-06-27 23:19:33,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74202246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:33,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:33,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:33,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475417081] [2024-06-27 23:19:33,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:33,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:33,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:33,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:33,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:34,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:19:34,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 297 transitions, 3587 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:34,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:34,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:19:34,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:34,570 INFO L124 PetriNetUnfolderBase]: 571/1034 cut-off events. [2024-06-27 23:19:34,570 INFO L125 PetriNetUnfolderBase]: For 221750/221750 co-relation queries the response was YES. [2024-06-27 23:19:34,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10918 conditions, 1034 events. 571/1034 cut-off events. For 221750/221750 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5344 event pairs, 48 based on Foata normal form. 1/1029 useless extension candidates. Maximal degree in co-relation 10770. Up to 809 conditions per place. [2024-06-27 23:19:34,583 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 238 selfloop transitions, 72 changer transitions 0/313 dead transitions. [2024-06-27 23:19:34,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 313 transitions, 4608 flow [2024-06-27 23:19:34,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:19:34,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:19:34,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-27 23:19:34,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-27 23:19:34,585 INFO L175 Difference]: Start difference. First operand has 308 places, 297 transitions, 3587 flow. Second operand 10 states and 135 transitions. [2024-06-27 23:19:34,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 313 transitions, 4608 flow [2024-06-27 23:19:35,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 313 transitions, 4442 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-06-27 23:19:35,450 INFO L231 Difference]: Finished difference. Result has 316 places, 302 transitions, 3766 flow [2024-06-27 23:19:35,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3423, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3766, PETRI_PLACES=316, PETRI_TRANSITIONS=302} [2024-06-27 23:19:35,451 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-27 23:19:35,451 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 302 transitions, 3766 flow [2024-06-27 23:19:35,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:35,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:35,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:35,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 23:19:35,451 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)] === [2024-06-27 23:19:35,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:35,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1487456911, now seen corresponding path program 6 times [2024-06-27 23:19:35,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:35,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509898539] [2024-06-27 23:19:35,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:35,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:37,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:37,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:37,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509898539] [2024-06-27 23:19:37,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509898539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:37,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:37,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:37,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411928408] [2024-06-27 23:19:37,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:37,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:37,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:37,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:37,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:37,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:19:37,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 302 transitions, 3766 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) [2024-06-27 23:19:37,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:37,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:19:37,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:38,026 INFO L124 PetriNetUnfolderBase]: 569/1029 cut-off events. [2024-06-27 23:19:38,026 INFO L125 PetriNetUnfolderBase]: For 224271/224271 co-relation queries the response was YES. [2024-06-27 23:19:38,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10916 conditions, 1029 events. 569/1029 cut-off events. For 224271/224271 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5278 event pairs, 31 based on Foata normal form. 1/1028 useless extension candidates. Maximal degree in co-relation 10764. Up to 661 conditions per place. [2024-06-27 23:19:38,039 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 187 selfloop transitions, 125 changer transitions 0/315 dead transitions. [2024-06-27 23:19:38,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 315 transitions, 4661 flow [2024-06-27 23:19:38,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:19:38,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:19:38,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-27 23:19:38,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618055555555556 [2024-06-27 23:19:38,040 INFO L175 Difference]: Start difference. First operand has 316 places, 302 transitions, 3766 flow. Second operand 9 states and 133 transitions. [2024-06-27 23:19:38,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 315 transitions, 4661 flow [2024-06-27 23:19:38,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 315 transitions, 4503 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-27 23:19:38,789 INFO L231 Difference]: Finished difference. Result has 320 places, 303 transitions, 3930 flow [2024-06-27 23:19:38,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3608, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3930, PETRI_PLACES=320, PETRI_TRANSITIONS=303} [2024-06-27 23:19:38,789 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 289 predicate places. [2024-06-27 23:19:38,789 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 303 transitions, 3930 flow [2024-06-27 23:19:38,790 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) [2024-06-27 23:19:38,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:38,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:38,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 23:19:38,790 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)] === [2024-06-27 23:19:38,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:38,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1763812578, now seen corresponding path program 7 times [2024-06-27 23:19:38,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:38,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330413003] [2024-06-27 23:19:38,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:38,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:38,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:40,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:40,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:40,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330413003] [2024-06-27 23:19:40,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330413003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:40,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:40,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:40,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789660657] [2024-06-27 23:19:40,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:40,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:40,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:40,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:40,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:40,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:19:40,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 303 transitions, 3930 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:40,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:40,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:19:40,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:41,375 INFO L124 PetriNetUnfolderBase]: 567/1026 cut-off events. [2024-06-27 23:19:41,376 INFO L125 PetriNetUnfolderBase]: For 217033/217033 co-relation queries the response was YES. [2024-06-27 23:19:41,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11010 conditions, 1026 events. 567/1026 cut-off events. For 217033/217033 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5291 event pairs, 48 based on Foata normal form. 1/1021 useless extension candidates. Maximal degree in co-relation 10856. Up to 861 conditions per place. [2024-06-27 23:19:41,389 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 263 selfloop transitions, 48 changer transitions 0/314 dead transitions. [2024-06-27 23:19:41,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 314 transitions, 4615 flow [2024-06-27 23:19:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:19:41,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:19:41,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-27 23:19:41,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-27 23:19:41,391 INFO L175 Difference]: Start difference. First operand has 320 places, 303 transitions, 3930 flow. Second operand 10 states and 131 transitions. [2024-06-27 23:19:41,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 314 transitions, 4615 flow [2024-06-27 23:19:42,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 314 transitions, 4381 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 23:19:42,087 INFO L231 Difference]: Finished difference. Result has 324 places, 304 transitions, 3838 flow [2024-06-27 23:19:42,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3696, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3838, PETRI_PLACES=324, PETRI_TRANSITIONS=304} [2024-06-27 23:19:42,088 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-27 23:19:42,088 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 304 transitions, 3838 flow [2024-06-27 23:19:42,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:42,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:42,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:42,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 23:19:42,088 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)] === [2024-06-27 23:19:42,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:42,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1763806781, now seen corresponding path program 7 times [2024-06-27 23:19:42,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:42,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642623288] [2024-06-27 23:19:42,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:42,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:43,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:43,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:43,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642623288] [2024-06-27 23:19:43,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642623288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:43,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:43,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:43,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444505040] [2024-06-27 23:19:43,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:43,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:43,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:43,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:43,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:43,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:19:43,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 304 transitions, 3838 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) [2024-06-27 23:19:43,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:43,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:19:43,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:44,117 INFO L124 PetriNetUnfolderBase]: 570/1031 cut-off events. [2024-06-27 23:19:44,118 INFO L125 PetriNetUnfolderBase]: For 226370/226370 co-relation queries the response was YES. [2024-06-27 23:19:44,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10971 conditions, 1031 events. 570/1031 cut-off events. For 226370/226370 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5307 event pairs, 31 based on Foata normal form. 1/1030 useless extension candidates. Maximal degree in co-relation 10815. Up to 825 conditions per place. [2024-06-27 23:19:44,131 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 245 selfloop transitions, 69 changer transitions 0/317 dead transitions. [2024-06-27 23:19:44,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 317 transitions, 4548 flow [2024-06-27 23:19:44,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:19:44,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:19:44,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-27 23:19:44,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 23:19:44,132 INFO L175 Difference]: Start difference. First operand has 324 places, 304 transitions, 3838 flow. Second operand 9 states and 126 transitions. [2024-06-27 23:19:44,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 317 transitions, 4548 flow [2024-06-27 23:19:44,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 317 transitions, 4395 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-27 23:19:44,871 INFO L231 Difference]: Finished difference. Result has 325 places, 306 transitions, 3889 flow [2024-06-27 23:19:44,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3685, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3889, PETRI_PLACES=325, PETRI_TRANSITIONS=306} [2024-06-27 23:19:44,871 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2024-06-27 23:19:44,872 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 306 transitions, 3889 flow [2024-06-27 23:19:44,872 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) [2024-06-27 23:19:44,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:44,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:44,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 23:19:44,872 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)] === [2024-06-27 23:19:44,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:44,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1756178301, now seen corresponding path program 1 times [2024-06-27 23:19:44,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:44,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006920707] [2024-06-27 23:19:44,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:44,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:47,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:47,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:47,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006920707] [2024-06-27 23:19:47,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006920707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:47,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:47,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:47,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955879334] [2024-06-27 23:19:47,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:47,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:47,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:47,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:47,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:47,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:19:47,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 306 transitions, 3889 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) [2024-06-27 23:19:47,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:47,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:19:47,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:47,917 INFO L124 PetriNetUnfolderBase]: 544/1004 cut-off events. [2024-06-27 23:19:47,917 INFO L125 PetriNetUnfolderBase]: For 241144/241145 co-relation queries the response was YES. [2024-06-27 23:19:47,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10873 conditions, 1004 events. 544/1004 cut-off events. For 241144/241145 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5310 event pairs, 39 based on Foata normal form. 3/1000 useless extension candidates. Maximal degree in co-relation 10717. Up to 830 conditions per place. [2024-06-27 23:19:47,930 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 256 selfloop transitions, 22 changer transitions 0/319 dead transitions. [2024-06-27 23:19:47,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 319 transitions, 4501 flow [2024-06-27 23:19:47,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:19:47,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:19:47,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-27 23:19:47,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 23:19:47,931 INFO L175 Difference]: Start difference. First operand has 325 places, 306 transitions, 3889 flow. Second operand 9 states and 128 transitions. [2024-06-27 23:19:47,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 319 transitions, 4501 flow [2024-06-27 23:19:48,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 319 transitions, 4325 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 23:19:48,787 INFO L231 Difference]: Finished difference. Result has 327 places, 307 transitions, 3791 flow [2024-06-27 23:19:48,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3713, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3791, PETRI_PLACES=327, PETRI_TRANSITIONS=307} [2024-06-27 23:19:48,788 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-27 23:19:48,788 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 307 transitions, 3791 flow [2024-06-27 23:19:48,788 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) [2024-06-27 23:19:48,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:48,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:48,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 23:19:48,789 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)] === [2024-06-27 23:19:48,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:48,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1756455131, now seen corresponding path program 8 times [2024-06-27 23:19:48,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:48,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329005398] [2024-06-27 23:19:48,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:48,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:50,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:50,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:50,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329005398] [2024-06-27 23:19:50,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329005398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:50,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:50,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:50,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746129085] [2024-06-27 23:19:50,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:50,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:50,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:50,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:50,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:50,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:19:50,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 307 transitions, 3791 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) [2024-06-27 23:19:50,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:50,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:19:50,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:51,206 INFO L124 PetriNetUnfolderBase]: 572/1036 cut-off events. [2024-06-27 23:19:51,206 INFO L125 PetriNetUnfolderBase]: For 227584/227584 co-relation queries the response was YES. [2024-06-27 23:19:51,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10851 conditions, 1036 events. 572/1036 cut-off events. For 227584/227584 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5372 event pairs, 31 based on Foata normal form. 1/1035 useless extension candidates. Maximal degree in co-relation 10694. Up to 668 conditions per place. [2024-06-27 23:19:51,218 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 207 selfloop transitions, 109 changer transitions 0/319 dead transitions. [2024-06-27 23:19:51,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 319 transitions, 4679 flow [2024-06-27 23:19:51,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:19:51,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:19:51,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-27 23:19:51,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618055555555556 [2024-06-27 23:19:51,219 INFO L175 Difference]: Start difference. First operand has 327 places, 307 transitions, 3791 flow. Second operand 9 states and 133 transitions. [2024-06-27 23:19:51,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 319 transitions, 4679 flow [2024-06-27 23:19:52,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 319 transitions, 4561 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-27 23:19:52,063 INFO L231 Difference]: Finished difference. Result has 329 places, 307 transitions, 3897 flow [2024-06-27 23:19:52,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3673, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3897, PETRI_PLACES=329, PETRI_TRANSITIONS=307} [2024-06-27 23:19:52,063 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2024-06-27 23:19:52,063 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 307 transitions, 3897 flow [2024-06-27 23:19:52,064 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) [2024-06-27 23:19:52,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:52,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:52,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 23:19:52,064 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)] === [2024-06-27 23:19:52,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:52,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1763806998, now seen corresponding path program 8 times [2024-06-27 23:19:52,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:52,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182474877] [2024-06-27 23:19:52,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:52,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:53,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:53,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:53,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182474877] [2024-06-27 23:19:53,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182474877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:53,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:53,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:19:53,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409590343] [2024-06-27 23:19:53,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:53,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:19:53,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:53,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:19:53,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:19:54,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:19:54,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 307 transitions, 3897 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:54,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:54,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:19:54,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:54,674 INFO L124 PetriNetUnfolderBase]: 575/1045 cut-off events. [2024-06-27 23:19:54,674 INFO L125 PetriNetUnfolderBase]: For 227009/227009 co-relation queries the response was YES. [2024-06-27 23:19:54,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11056 conditions, 1045 events. 575/1045 cut-off events. For 227009/227009 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5451 event pairs, 47 based on Foata normal form. 1/1040 useless extension candidates. Maximal degree in co-relation 10898. Up to 870 conditions per place. [2024-06-27 23:19:54,685 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 265 selfloop transitions, 51 changer transitions 0/319 dead transitions. [2024-06-27 23:19:54,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 319 transitions, 4623 flow [2024-06-27 23:19:54,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:19:54,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:19:54,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 23:19:54,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-27 23:19:54,686 INFO L175 Difference]: Start difference. First operand has 329 places, 307 transitions, 3897 flow. Second operand 10 states and 133 transitions. [2024-06-27 23:19:54,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 319 transitions, 4623 flow [2024-06-27 23:19:55,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 319 transitions, 4429 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 23:19:55,448 INFO L231 Difference]: Finished difference. Result has 333 places, 309 transitions, 3884 flow [2024-06-27 23:19:55,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3703, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3884, PETRI_PLACES=333, PETRI_TRANSITIONS=309} [2024-06-27 23:19:55,449 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 302 predicate places. [2024-06-27 23:19:55,449 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 309 transitions, 3884 flow [2024-06-27 23:19:55,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:55,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:55,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:55,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 23:19:55,450 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)] === [2024-06-27 23:19:55,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:55,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1494873661, now seen corresponding path program 9 times [2024-06-27 23:19:55,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:55,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579066883] [2024-06-27 23:19:55,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:55,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:57,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:57,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:57,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579066883] [2024-06-27 23:19:57,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579066883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:57,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:57,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:19:57,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216944281] [2024-06-27 23:19:57,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:57,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:19:57,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:57,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:19:57,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:19:57,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:19:57,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 309 transitions, 3884 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) [2024-06-27 23:19:57,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:57,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:19:57,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:57,693 INFO L124 PetriNetUnfolderBase]: 588/1066 cut-off events. [2024-06-27 23:19:57,693 INFO L125 PetriNetUnfolderBase]: For 245323/245323 co-relation queries the response was YES. [2024-06-27 23:19:57,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11499 conditions, 1066 events. 588/1066 cut-off events. For 245323/245323 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5577 event pairs, 43 based on Foata normal form. 1/1065 useless extension candidates. Maximal degree in co-relation 11340. Up to 789 conditions per place. [2024-06-27 23:19:57,707 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 235 selfloop transitions, 89 changer transitions 0/328 dead transitions. [2024-06-27 23:19:57,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 328 transitions, 5208 flow [2024-06-27 23:19:57,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:19:57,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:19:57,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-27 23:19:57,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-27 23:19:57,709 INFO L175 Difference]: Start difference. First operand has 333 places, 309 transitions, 3884 flow. Second operand 9 states and 142 transitions. [2024-06-27 23:19:57,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 328 transitions, 5208 flow [2024-06-27 23:19:58,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 328 transitions, 5049 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-27 23:19:58,537 INFO L231 Difference]: Finished difference. Result has 335 places, 314 transitions, 4076 flow [2024-06-27 23:19:58,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3725, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4076, PETRI_PLACES=335, PETRI_TRANSITIONS=314} [2024-06-27 23:19:58,538 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 304 predicate places. [2024-06-27 23:19:58,538 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 314 transitions, 4076 flow [2024-06-27 23:19:58,538 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) [2024-06-27 23:19:58,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:58,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:58,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 23:19:58,539 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)] === [2024-06-27 23:19:58,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:58,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1494866221, now seen corresponding path program 10 times [2024-06-27 23:19:58,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:58,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396085771] [2024-06-27 23:19:58,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:58,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:00,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:00,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:00,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396085771] [2024-06-27 23:20:00,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396085771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:00,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:00,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:20:00,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624222926] [2024-06-27 23:20:00,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:00,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:20:00,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:00,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:20:00,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:20:00,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:20:00,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 314 transitions, 4076 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) [2024-06-27 23:20:00,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:00,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:20:00,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:00,686 INFO L124 PetriNetUnfolderBase]: 600/1086 cut-off events. [2024-06-27 23:20:00,687 INFO L125 PetriNetUnfolderBase]: For 262389/262389 co-relation queries the response was YES. [2024-06-27 23:20:00,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11936 conditions, 1086 events. 600/1086 cut-off events. For 262389/262389 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5696 event pairs, 44 based on Foata normal form. 2/1086 useless extension candidates. Maximal degree in co-relation 11776. Up to 789 conditions per place. [2024-06-27 23:20:00,700 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 234 selfloop transitions, 96 changer transitions 0/334 dead transitions. [2024-06-27 23:20:00,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 334 transitions, 5430 flow [2024-06-27 23:20:00,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:00,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:00,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-27 23:20:00,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 23:20:00,701 INFO L175 Difference]: Start difference. First operand has 335 places, 314 transitions, 4076 flow. Second operand 9 states and 144 transitions. [2024-06-27 23:20:00,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 334 transitions, 5430 flow [2024-06-27 23:20:01,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 334 transitions, 5242 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-27 23:20:01,607 INFO L231 Difference]: Finished difference. Result has 342 places, 321 transitions, 4328 flow [2024-06-27 23:20:01,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3888, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4328, PETRI_PLACES=342, PETRI_TRANSITIONS=321} [2024-06-27 23:20:01,608 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-27 23:20:01,608 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 321 transitions, 4328 flow [2024-06-27 23:20:01,608 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) [2024-06-27 23:20:01,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:01,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:01,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 23:20:01,608 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)] === [2024-06-27 23:20:01,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:01,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1494865942, now seen corresponding path program 2 times [2024-06-27 23:20:01,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:01,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730625896] [2024-06-27 23:20:01,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:01,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:03,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:03,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:03,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730625896] [2024-06-27 23:20:03,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730625896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:03,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:03,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:03,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603508632] [2024-06-27 23:20:03,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:03,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:03,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:03,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:03,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:03,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:20:03,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 321 transitions, 4328 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) [2024-06-27 23:20:03,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:03,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:20:03,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:04,031 INFO L124 PetriNetUnfolderBase]: 597/1081 cut-off events. [2024-06-27 23:20:04,032 INFO L125 PetriNetUnfolderBase]: For 258676/258676 co-relation queries the response was YES. [2024-06-27 23:20:04,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11970 conditions, 1081 events. 597/1081 cut-off events. For 258676/258676 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5624 event pairs, 31 based on Foata normal form. 1/1080 useless extension candidates. Maximal degree in co-relation 11805. Up to 957 conditions per place. [2024-06-27 23:20:04,046 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 294 selfloop transitions, 35 changer transitions 0/332 dead transitions. [2024-06-27 23:20:04,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 332 transitions, 5012 flow [2024-06-27 23:20:04,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:04,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:04,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-27 23:20:04,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-06-27 23:20:04,047 INFO L175 Difference]: Start difference. First operand has 342 places, 321 transitions, 4328 flow. Second operand 9 states and 122 transitions. [2024-06-27 23:20:04,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 332 transitions, 5012 flow [2024-06-27 23:20:04,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 332 transitions, 4830 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-06-27 23:20:04,889 INFO L231 Difference]: Finished difference. Result has 347 places, 321 transitions, 4221 flow [2024-06-27 23:20:04,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4146, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4221, PETRI_PLACES=347, PETRI_TRANSITIONS=321} [2024-06-27 23:20:04,889 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-27 23:20:04,889 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 321 transitions, 4221 flow [2024-06-27 23:20:04,890 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) [2024-06-27 23:20:04,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:04,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:04,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 23:20:04,890 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)] === [2024-06-27 23:20:04,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:04,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1494873878, now seen corresponding path program 9 times [2024-06-27 23:20:04,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:04,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389369027] [2024-06-27 23:20:04,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:04,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:06,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:06,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:06,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389369027] [2024-06-27 23:20:06,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389369027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:06,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:06,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:06,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548257433] [2024-06-27 23:20:06,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:06,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:06,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:06,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:06,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:06,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:20:06,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 321 transitions, 4221 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:06,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:06,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:20:06,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:07,115 INFO L124 PetriNetUnfolderBase]: 595/1078 cut-off events. [2024-06-27 23:20:07,116 INFO L125 PetriNetUnfolderBase]: For 254488/254488 co-relation queries the response was YES. [2024-06-27 23:20:07,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11766 conditions, 1078 events. 595/1078 cut-off events. For 254488/254488 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5654 event pairs, 36 based on Foata normal form. 1/1073 useless extension candidates. Maximal degree in co-relation 11599. Up to 894 conditions per place. [2024-06-27 23:20:07,129 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 273 selfloop transitions, 55 changer transitions 0/331 dead transitions. [2024-06-27 23:20:07,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 331 transitions, 4901 flow [2024-06-27 23:20:07,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:20:07,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:20:07,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-27 23:20:07,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-27 23:20:07,131 INFO L175 Difference]: Start difference. First operand has 347 places, 321 transitions, 4221 flow. Second operand 10 states and 135 transitions. [2024-06-27 23:20:07,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 331 transitions, 4901 flow [2024-06-27 23:20:08,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 331 transitions, 4758 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 23:20:08,009 INFO L231 Difference]: Finished difference. Result has 348 places, 321 transitions, 4193 flow [2024-06-27 23:20:08,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4078, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4193, PETRI_PLACES=348, PETRI_TRANSITIONS=321} [2024-06-27 23:20:08,011 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-27 23:20:08,011 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 321 transitions, 4193 flow [2024-06-27 23:20:08,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:08,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:08,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:08,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 23:20:08,012 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)] === [2024-06-27 23:20:08,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:08,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1521625291, now seen corresponding path program 11 times [2024-06-27 23:20:08,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:08,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971488572] [2024-06-27 23:20:08,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:08,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:09,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:09,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:09,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971488572] [2024-06-27 23:20:09,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971488572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:09,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:09,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:20:09,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242592325] [2024-06-27 23:20:09,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:09,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:20:09,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:09,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:20:09,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:20:09,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:20:09,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 321 transitions, 4193 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) [2024-06-27 23:20:09,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:09,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:20:09,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:09,903 INFO L124 PetriNetUnfolderBase]: 632/1138 cut-off events. [2024-06-27 23:20:09,903 INFO L125 PetriNetUnfolderBase]: For 307844/307844 co-relation queries the response was YES. [2024-06-27 23:20:09,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13203 conditions, 1138 events. 632/1138 cut-off events. For 307844/307844 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5999 event pairs, 46 based on Foata normal form. 2/1134 useless extension candidates. Maximal degree in co-relation 13035. Up to 847 conditions per place. [2024-06-27 23:20:09,918 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 250 selfloop transitions, 89 changer transitions 0/343 dead transitions. [2024-06-27 23:20:09,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 343 transitions, 5673 flow [2024-06-27 23:20:09,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:09,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:09,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-27 23:20:09,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-27 23:20:09,919 INFO L175 Difference]: Start difference. First operand has 348 places, 321 transitions, 4193 flow. Second operand 9 states and 143 transitions. [2024-06-27 23:20:09,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 343 transitions, 5673 flow [2024-06-27 23:20:11,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 343 transitions, 5488 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 23:20:11,032 INFO L231 Difference]: Finished difference. Result has 350 places, 330 transitions, 4474 flow [2024-06-27 23:20:11,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4008, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4474, PETRI_PLACES=350, PETRI_TRANSITIONS=330} [2024-06-27 23:20:11,033 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 319 predicate places. [2024-06-27 23:20:11,033 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 330 transitions, 4474 flow [2024-06-27 23:20:11,048 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) [2024-06-27 23:20:11,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:11,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:11,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 23:20:11,049 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)] === [2024-06-27 23:20:11,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:11,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1019878340, now seen corresponding path program 3 times [2024-06-27 23:20:11,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:11,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927211253] [2024-06-27 23:20:11,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:11,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:12,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:12,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:12,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927211253] [2024-06-27 23:20:12,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927211253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:12,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:12,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:20:12,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456289669] [2024-06-27 23:20:12,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:12,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:20:12,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:12,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:20:12,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:20:13,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:20:13,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 330 transitions, 4474 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) [2024-06-27 23:20:13,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:13,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:20:13,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:13,297 INFO L124 PetriNetUnfolderBase]: 629/1132 cut-off events. [2024-06-27 23:20:13,298 INFO L125 PetriNetUnfolderBase]: For 293975/293975 co-relation queries the response was YES. [2024-06-27 23:20:13,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13203 conditions, 1132 events. 629/1132 cut-off events. For 293975/293975 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5959 event pairs, 51 based on Foata normal form. 1/1129 useless extension candidates. Maximal degree in co-relation 13033. Up to 1005 conditions per place. [2024-06-27 23:20:13,312 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 300 selfloop transitions, 35 changer transitions 0/339 dead transitions. [2024-06-27 23:20:13,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 339 transitions, 5164 flow [2024-06-27 23:20:13,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:13,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:13,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-06-27 23:20:13,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-27 23:20:13,313 INFO L175 Difference]: Start difference. First operand has 350 places, 330 transitions, 4474 flow. Second operand 9 states and 129 transitions. [2024-06-27 23:20:13,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 339 transitions, 5164 flow [2024-06-27 23:20:14,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 339 transitions, 4971 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-27 23:20:14,693 INFO L231 Difference]: Finished difference. Result has 355 places, 330 transitions, 4356 flow [2024-06-27 23:20:14,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4281, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4356, PETRI_PLACES=355, PETRI_TRANSITIONS=330} [2024-06-27 23:20:14,693 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-27 23:20:14,693 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 330 transitions, 4356 flow [2024-06-27 23:20:14,694 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) [2024-06-27 23:20:14,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:14,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:14,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 23:20:14,694 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)] === [2024-06-27 23:20:14,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:14,694 INFO L85 PathProgramCache]: Analyzing trace with hash -450608422, now seen corresponding path program 4 times [2024-06-27 23:20:14,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:14,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720522227] [2024-06-27 23:20:14,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:14,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:17,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:17,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:17,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720522227] [2024-06-27 23:20:17,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720522227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:17,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:17,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:17,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813192779] [2024-06-27 23:20:17,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:17,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:17,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:17,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:17,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:17,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:20:17,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 330 transitions, 4356 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:17,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:17,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:20:17,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:18,256 INFO L124 PetriNetUnfolderBase]: 632/1138 cut-off events. [2024-06-27 23:20:18,257 INFO L125 PetriNetUnfolderBase]: For 296927/296927 co-relation queries the response was YES. [2024-06-27 23:20:18,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13132 conditions, 1138 events. 632/1138 cut-off events. For 296927/296927 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5982 event pairs, 87 based on Foata normal form. 1/1137 useless extension candidates. Maximal degree in co-relation 12959. Up to 1058 conditions per place. [2024-06-27 23:20:18,272 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 320 selfloop transitions, 18 changer transitions 0/341 dead transitions. [2024-06-27 23:20:18,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 341 transitions, 5088 flow [2024-06-27 23:20:18,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:20:18,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:20:18,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 23:20:18,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-27 23:20:18,273 INFO L175 Difference]: Start difference. First operand has 355 places, 330 transitions, 4356 flow. Second operand 10 states and 116 transitions. [2024-06-27 23:20:18,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 341 transitions, 5088 flow [2024-06-27 23:20:19,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 341 transitions, 4995 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 23:20:19,498 INFO L231 Difference]: Finished difference. Result has 358 places, 332 transitions, 4344 flow [2024-06-27 23:20:19,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4263, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4344, PETRI_PLACES=358, PETRI_TRANSITIONS=332} [2024-06-27 23:20:19,498 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 327 predicate places. [2024-06-27 23:20:19,498 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 332 transitions, 4344 flow [2024-06-27 23:20:19,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:19,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:19,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:19,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 23:20:19,499 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)] === [2024-06-27 23:20:19,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:19,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1020093666, now seen corresponding path program 10 times [2024-06-27 23:20:19,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:19,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191746140] [2024-06-27 23:20:19,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:19,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:21,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:21,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:21,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191746140] [2024-06-27 23:20:21,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191746140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:21,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:21,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:21,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660533950] [2024-06-27 23:20:21,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:21,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:21,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:21,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:21,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:21,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:20:21,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 332 transitions, 4344 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:21,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:21,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:20:21,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:21,940 INFO L124 PetriNetUnfolderBase]: 630/1136 cut-off events. [2024-06-27 23:20:21,940 INFO L125 PetriNetUnfolderBase]: For 293993/293993 co-relation queries the response was YES. [2024-06-27 23:20:21,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12965 conditions, 1136 events. 630/1136 cut-off events. For 293993/293993 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5979 event pairs, 58 based on Foata normal form. 1/1130 useless extension candidates. Maximal degree in co-relation 12790. Up to 891 conditions per place. [2024-06-27 23:20:21,955 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 254 selfloop transitions, 84 changer transitions 0/341 dead transitions. [2024-06-27 23:20:21,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 341 transitions, 5040 flow [2024-06-27 23:20:21,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:20:21,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:20:21,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 23:20:21,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:20:21,957 INFO L175 Difference]: Start difference. First operand has 358 places, 332 transitions, 4344 flow. Second operand 10 states and 128 transitions. [2024-06-27 23:20:21,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 341 transitions, 5040 flow [2024-06-27 23:20:23,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 341 transitions, 4939 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-27 23:20:23,258 INFO L231 Difference]: Finished difference. Result has 360 places, 332 transitions, 4416 flow [2024-06-27 23:20:23,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4243, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4416, PETRI_PLACES=360, PETRI_TRANSITIONS=332} [2024-06-27 23:20:23,259 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 329 predicate places. [2024-06-27 23:20:23,259 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 332 transitions, 4416 flow [2024-06-27 23:20:23,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:23,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:23,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:23,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 23:20:23,259 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)] === [2024-06-27 23:20:23,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:23,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1012459389, now seen corresponding path program 2 times [2024-06-27 23:20:23,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:23,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161369142] [2024-06-27 23:20:23,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:23,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:25,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:25,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:25,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161369142] [2024-06-27 23:20:25,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161369142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:25,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:25,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:20:25,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560969030] [2024-06-27 23:20:25,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:25,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:20:25,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:25,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:20:25,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:20:25,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-27 23:20:25,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 332 transitions, 4416 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) [2024-06-27 23:20:25,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:25,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-27 23:20:25,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:25,630 INFO L124 PetriNetUnfolderBase]: 600/1104 cut-off events. [2024-06-27 23:20:25,631 INFO L125 PetriNetUnfolderBase]: For 313332/313333 co-relation queries the response was YES. [2024-06-27 23:20:25,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12924 conditions, 1104 events. 600/1104 cut-off events. For 313332/313333 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5960 event pairs, 56 based on Foata normal form. 3/1100 useless extension candidates. Maximal degree in co-relation 12749. Up to 922 conditions per place. [2024-06-27 23:20:25,647 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 277 selfloop transitions, 22 changer transitions 0/343 dead transitions. [2024-06-27 23:20:25,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 343 transitions, 5066 flow [2024-06-27 23:20:25,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:25,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:25,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-27 23:20:25,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-27 23:20:25,648 INFO L175 Difference]: Start difference. First operand has 360 places, 332 transitions, 4416 flow. Second operand 9 states and 135 transitions. [2024-06-27 23:20:25,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 343 transitions, 5066 flow [2024-06-27 23:20:26,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 343 transitions, 4885 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:20:26,915 INFO L231 Difference]: Finished difference. Result has 360 places, 333 transitions, 4315 flow [2024-06-27 23:20:26,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4235, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4315, PETRI_PLACES=360, PETRI_TRANSITIONS=333} [2024-06-27 23:20:26,915 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 329 predicate places. [2024-06-27 23:20:26,916 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 333 transitions, 4315 flow [2024-06-27 23:20:26,916 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) [2024-06-27 23:20:26,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:26,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:26,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 23:20:26,916 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)] === [2024-06-27 23:20:26,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:26,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1012459730, now seen corresponding path program 5 times [2024-06-27 23:20:26,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:26,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42634373] [2024-06-27 23:20:26,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:26,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:28,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:28,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42634373] [2024-06-27 23:20:28,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42634373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:28,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:28,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:20:28,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10591605] [2024-06-27 23:20:28,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:28,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:20:28,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:28,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:20:28,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:20:29,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:20:29,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 333 transitions, 4315 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) [2024-06-27 23:20:29,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:29,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:20:29,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:29,459 INFO L124 PetriNetUnfolderBase]: 637/1147 cut-off events. [2024-06-27 23:20:29,460 INFO L125 PetriNetUnfolderBase]: For 305069/305069 co-relation queries the response was YES. [2024-06-27 23:20:29,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13116 conditions, 1147 events. 637/1147 cut-off events. For 305069/305069 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6038 event pairs, 50 based on Foata normal form. 1/1144 useless extension candidates. Maximal degree in co-relation 12940. Up to 993 conditions per place. [2024-06-27 23:20:29,475 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 293 selfloop transitions, 49 changer transitions 0/345 dead transitions. [2024-06-27 23:20:29,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 345 transitions, 5317 flow [2024-06-27 23:20:29,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:20:29,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:20:29,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-27 23:20:29,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-27 23:20:29,477 INFO L175 Difference]: Start difference. First operand has 360 places, 333 transitions, 4315 flow. Second operand 10 states and 134 transitions. [2024-06-27 23:20:29,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 345 transitions, 5317 flow [2024-06-27 23:20:30,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 345 transitions, 5247 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 23:20:30,883 INFO L231 Difference]: Finished difference. Result has 363 places, 335 transitions, 4394 flow [2024-06-27 23:20:30,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4245, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4394, PETRI_PLACES=363, PETRI_TRANSITIONS=335} [2024-06-27 23:20:30,883 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 332 predicate places. [2024-06-27 23:20:30,884 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 335 transitions, 4394 flow [2024-06-27 23:20:30,884 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) [2024-06-27 23:20:30,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:30,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:30,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 23:20:30,884 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)] === [2024-06-27 23:20:30,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:30,884 INFO L85 PathProgramCache]: Analyzing trace with hash -450608701, now seen corresponding path program 12 times [2024-06-27 23:20:30,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:30,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827583854] [2024-06-27 23:20:30,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:30,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:32,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:32,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:32,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827583854] [2024-06-27 23:20:32,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827583854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:32,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:32,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:32,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058251744] [2024-06-27 23:20:32,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:32,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:32,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:32,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:32,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:33,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:20:33,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 335 transitions, 4394 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:33,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:33,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:20:33,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:33,736 INFO L124 PetriNetUnfolderBase]: 649/1168 cut-off events. [2024-06-27 23:20:33,736 INFO L125 PetriNetUnfolderBase]: For 325585/325585 co-relation queries the response was YES. [2024-06-27 23:20:33,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13514 conditions, 1168 events. 649/1168 cut-off events. For 325585/325585 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6151 event pairs, 86 based on Foata normal form. 2/1168 useless extension candidates. Maximal degree in co-relation 13336. Up to 1062 conditions per place. [2024-06-27 23:20:33,753 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 322 selfloop transitions, 25 changer transitions 0/350 dead transitions. [2024-06-27 23:20:33,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 350 transitions, 5482 flow [2024-06-27 23:20:33,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:20:33,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:20:33,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 23:20:33,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 23:20:33,754 INFO L175 Difference]: Start difference. First operand has 363 places, 335 transitions, 4394 flow. Second operand 11 states and 128 transitions. [2024-06-27 23:20:33,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 350 transitions, 5482 flow [2024-06-27 23:20:35,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 350 transitions, 5274 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 23:20:35,108 INFO L231 Difference]: Finished difference. Result has 366 places, 339 transitions, 4355 flow [2024-06-27 23:20:35,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4186, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4355, PETRI_PLACES=366, PETRI_TRANSITIONS=339} [2024-06-27 23:20:35,108 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-27 23:20:35,108 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 339 transitions, 4355 flow [2024-06-27 23:20:35,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:35,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:35,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:35,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 23:20:35,109 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)] === [2024-06-27 23:20:35,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:35,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1012469309, now seen corresponding path program 13 times [2024-06-27 23:20:35,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:35,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291063989] [2024-06-27 23:20:35,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:35,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:37,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:37,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:37,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291063989] [2024-06-27 23:20:37,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291063989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:37,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:37,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:37,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858032902] [2024-06-27 23:20:37,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:37,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:37,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:37,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:37,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:37,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:20:37,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 339 transitions, 4355 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) [2024-06-27 23:20:37,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:37,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:20:37,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:38,023 INFO L124 PetriNetUnfolderBase]: 657/1181 cut-off events. [2024-06-27 23:20:38,023 INFO L125 PetriNetUnfolderBase]: For 331845/331845 co-relation queries the response was YES. [2024-06-27 23:20:38,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13732 conditions, 1181 events. 657/1181 cut-off events. For 331845/331845 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6274 event pairs, 57 based on Foata normal form. 1/1176 useless extension candidates. Maximal degree in co-relation 13553. Up to 922 conditions per place. [2024-06-27 23:20:38,038 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 268 selfloop transitions, 84 changer transitions 0/355 dead transitions. [2024-06-27 23:20:38,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 355 transitions, 5497 flow [2024-06-27 23:20:38,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:38,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:38,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-27 23:20:38,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 23:20:38,042 INFO L175 Difference]: Start difference. First operand has 366 places, 339 transitions, 4355 flow. Second operand 9 states and 132 transitions. [2024-06-27 23:20:38,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 355 transitions, 5497 flow [2024-06-27 23:20:39,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 355 transitions, 5410 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 23:20:39,474 INFO L231 Difference]: Finished difference. Result has 368 places, 345 transitions, 4625 flow [2024-06-27 23:20:39,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4268, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4625, PETRI_PLACES=368, PETRI_TRANSITIONS=345} [2024-06-27 23:20:39,476 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 337 predicate places. [2024-06-27 23:20:39,476 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 345 transitions, 4625 flow [2024-06-27 23:20:39,477 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) [2024-06-27 23:20:39,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:39,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:39,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 23:20:39,478 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)] === [2024-06-27 23:20:39,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:39,478 INFO L85 PathProgramCache]: Analyzing trace with hash -450599122, now seen corresponding path program 6 times [2024-06-27 23:20:39,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:39,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508154377] [2024-06-27 23:20:39,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:39,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:44,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:44,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:44,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508154377] [2024-06-27 23:20:44,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508154377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:44,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:44,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:44,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302728907] [2024-06-27 23:20:44,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:44,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:44,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:44,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:44,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:44,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:20:44,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 345 transitions, 4625 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:44,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:44,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:20:44,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:45,316 INFO L124 PetriNetUnfolderBase]: 660/1186 cut-off events. [2024-06-27 23:20:45,316 INFO L125 PetriNetUnfolderBase]: For 343283/343283 co-relation queries the response was YES. [2024-06-27 23:20:45,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13920 conditions, 1186 events. 660/1186 cut-off events. For 343283/343283 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6285 event pairs, 74 based on Foata normal form. 1/1185 useless extension candidates. Maximal degree in co-relation 13740. Up to 1100 conditions per place. [2024-06-27 23:20:45,333 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 332 selfloop transitions, 21 changer transitions 0/356 dead transitions. [2024-06-27 23:20:45,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 356 transitions, 5395 flow [2024-06-27 23:20:45,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:20:45,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:20:45,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 23:20:45,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-27 23:20:45,334 INFO L175 Difference]: Start difference. First operand has 368 places, 345 transitions, 4625 flow. Second operand 10 states and 118 transitions. [2024-06-27 23:20:45,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 356 transitions, 5395 flow [2024-06-27 23:20:46,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 356 transitions, 5227 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-27 23:20:46,601 INFO L231 Difference]: Finished difference. Result has 373 places, 347 transitions, 4552 flow [2024-06-27 23:20:46,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4457, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4552, PETRI_PLACES=373, PETRI_TRANSITIONS=347} [2024-06-27 23:20:46,602 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-27 23:20:46,602 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 347 transitions, 4552 flow [2024-06-27 23:20:46,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:46,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:46,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:46,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 23:20:46,602 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)] === [2024-06-27 23:20:46,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:46,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1019886276, now seen corresponding path program 11 times [2024-06-27 23:20:46,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:46,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48283047] [2024-06-27 23:20:46,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:46,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:48,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:48,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:48,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48283047] [2024-06-27 23:20:48,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48283047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:48,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:48,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:20:48,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421358415] [2024-06-27 23:20:48,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:48,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:20:48,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:48,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:20:48,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:20:48,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:20:48,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 347 transitions, 4552 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:48,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:48,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:20:48,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:49,332 INFO L124 PetriNetUnfolderBase]: 668/1203 cut-off events. [2024-06-27 23:20:49,332 INFO L125 PetriNetUnfolderBase]: For 357167/357167 co-relation queries the response was YES. [2024-06-27 23:20:49,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14224 conditions, 1203 events. 668/1203 cut-off events. For 357167/357167 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6418 event pairs, 46 based on Foata normal form. 1/1198 useless extension candidates. Maximal degree in co-relation 14041. Up to 939 conditions per place. [2024-06-27 23:20:49,349 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 267 selfloop transitions, 91 changer transitions 0/361 dead transitions. [2024-06-27 23:20:49,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 361 transitions, 5700 flow [2024-06-27 23:20:49,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:20:49,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:20:49,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-27 23:20:49,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-27 23:20:49,350 INFO L175 Difference]: Start difference. First operand has 373 places, 347 transitions, 4552 flow. Second operand 11 states and 140 transitions. [2024-06-27 23:20:49,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 361 transitions, 5700 flow [2024-06-27 23:20:50,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 361 transitions, 5629 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 23:20:50,859 INFO L231 Difference]: Finished difference. Result has 376 places, 351 transitions, 4824 flow [2024-06-27 23:20:50,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4481, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4824, PETRI_PLACES=376, PETRI_TRANSITIONS=351} [2024-06-27 23:20:50,860 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 345 predicate places. [2024-06-27 23:20:50,860 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 351 transitions, 4824 flow [2024-06-27 23:20:50,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:50,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:50,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:50,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 23:20:50,861 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)] === [2024-06-27 23:20:50,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:50,861 INFO L85 PathProgramCache]: Analyzing trace with hash -764307931, now seen corresponding path program 14 times [2024-06-27 23:20:50,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:50,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161832631] [2024-06-27 23:20:50,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:50,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:52,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:52,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:52,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161832631] [2024-06-27 23:20:52,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161832631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:52,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:52,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:20:52,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118841792] [2024-06-27 23:20:52,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:52,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:20:52,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:52,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:20:52,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:20:52,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:20:52,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 351 transitions, 4824 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) [2024-06-27 23:20:52,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:52,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:20:52,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:53,160 INFO L124 PetriNetUnfolderBase]: 671/1208 cut-off events. [2024-06-27 23:20:53,160 INFO L125 PetriNetUnfolderBase]: For 363660/363660 co-relation queries the response was YES. [2024-06-27 23:20:53,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14480 conditions, 1208 events. 671/1208 cut-off events. For 363660/363660 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6479 event pairs, 42 based on Foata normal form. 1/1203 useless extension candidates. Maximal degree in co-relation 14297. Up to 652 conditions per place. [2024-06-27 23:20:53,180 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 207 selfloop transitions, 160 changer transitions 0/371 dead transitions. [2024-06-27 23:20:53,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 371 transitions, 6359 flow [2024-06-27 23:20:53,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:53,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:53,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-27 23:20:53,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-27 23:20:53,182 INFO L175 Difference]: Start difference. First operand has 376 places, 351 transitions, 4824 flow. Second operand 9 states and 145 transitions. [2024-06-27 23:20:53,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 371 transitions, 6359 flow [2024-06-27 23:20:54,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 371 transitions, 6155 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-27 23:20:54,597 INFO L231 Difference]: Finished difference. Result has 380 places, 359 transitions, 5284 flow [2024-06-27 23:20:54,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4622, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5284, PETRI_PLACES=380, PETRI_TRANSITIONS=359} [2024-06-27 23:20:54,598 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-27 23:20:54,598 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 359 transitions, 5284 flow [2024-06-27 23:20:54,598 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) [2024-06-27 23:20:54,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:54,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:54,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 23:20:54,598 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)] === [2024-06-27 23:20:54,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:54,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1012469030, now seen corresponding path program 7 times [2024-06-27 23:20:54,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:54,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10277794] [2024-06-27 23:20:54,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:54,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:56,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:56,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:56,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10277794] [2024-06-27 23:20:56,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10277794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:56,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:56,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:56,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482340414] [2024-06-27 23:20:56,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:56,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:56,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:56,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:56,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:56,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:20:56,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 359 transitions, 5284 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) [2024-06-27 23:20:56,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:56,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:20:56,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:57,204 INFO L124 PetriNetUnfolderBase]: 674/1210 cut-off events. [2024-06-27 23:20:57,204 INFO L125 PetriNetUnfolderBase]: For 362746/362746 co-relation queries the response was YES. [2024-06-27 23:20:57,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14967 conditions, 1210 events. 674/1210 cut-off events. For 362746/362746 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6436 event pairs, 52 based on Foata normal form. 1/1207 useless extension candidates. Maximal degree in co-relation 14780. Up to 1053 conditions per place. [2024-06-27 23:20:57,221 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 320 selfloop transitions, 48 changer transitions 0/371 dead transitions. [2024-06-27 23:20:57,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 371 transitions, 6342 flow [2024-06-27 23:20:57,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:57,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:57,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2024-06-27 23:20:57,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409722222222222 [2024-06-27 23:20:57,223 INFO L175 Difference]: Start difference. First operand has 380 places, 359 transitions, 5284 flow. Second operand 9 states and 127 transitions. [2024-06-27 23:20:57,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 371 transitions, 6342 flow [2024-06-27 23:20:58,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 371 transitions, 6142 flow, removed 55 selfloop flow, removed 3 redundant places. [2024-06-27 23:20:58,862 INFO L231 Difference]: Finished difference. Result has 386 places, 361 transitions, 5223 flow [2024-06-27 23:20:58,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5084, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5223, PETRI_PLACES=386, PETRI_TRANSITIONS=361} [2024-06-27 23:20:58,863 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 355 predicate places. [2024-06-27 23:20:58,863 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 361 transitions, 5223 flow [2024-06-27 23:20:58,863 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) [2024-06-27 23:20:58,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:58,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:58,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 23:20:58,864 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)] === [2024-06-27 23:20:58,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:58,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1012728779, now seen corresponding path program 15 times [2024-06-27 23:20:58,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:58,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849795008] [2024-06-27 23:20:58,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:58,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:00,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:00,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:00,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849795008] [2024-06-27 23:21:00,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849795008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:00,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:00,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:00,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085774312] [2024-06-27 23:21:00,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:00,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:00,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:00,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:00,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:00,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:21:00,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 361 transitions, 5223 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) [2024-06-27 23:21:00,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:00,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:21:00,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:01,588 INFO L124 PetriNetUnfolderBase]: 677/1216 cut-off events. [2024-06-27 23:21:01,588 INFO L125 PetriNetUnfolderBase]: For 373406/373406 co-relation queries the response was YES. [2024-06-27 23:21:01,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15013 conditions, 1216 events. 677/1216 cut-off events. For 373406/373406 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6495 event pairs, 47 based on Foata normal form. 1/1211 useless extension candidates. Maximal degree in co-relation 14824. Up to 954 conditions per place. [2024-06-27 23:21:01,605 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 288 selfloop transitions, 84 changer transitions 0/375 dead transitions. [2024-06-27 23:21:01,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 375 transitions, 6609 flow [2024-06-27 23:21:01,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:21:01,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:21:01,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-27 23:21:01,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-27 23:21:01,607 INFO L175 Difference]: Start difference. First operand has 386 places, 361 transitions, 5223 flow. Second operand 9 states and 135 transitions. [2024-06-27 23:21:01,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 375 transitions, 6609 flow [2024-06-27 23:21:03,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 375 transitions, 6494 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 23:21:03,184 INFO L231 Difference]: Finished difference. Result has 389 places, 364 transitions, 5371 flow [2024-06-27 23:21:03,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5108, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5371, PETRI_PLACES=389, PETRI_TRANSITIONS=364} [2024-06-27 23:21:03,184 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 358 predicate places. [2024-06-27 23:21:03,184 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 364 transitions, 5371 flow [2024-06-27 23:21:03,185 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) [2024-06-27 23:21:03,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:03,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:03,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 23:21:03,185 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)] === [2024-06-27 23:21:03,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:03,185 INFO L85 PathProgramCache]: Analyzing trace with hash -439170941, now seen corresponding path program 3 times [2024-06-27 23:21:03,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:03,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020447670] [2024-06-27 23:21:03,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:03,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:06,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:06,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:06,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020447670] [2024-06-27 23:21:06,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020447670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:06,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:06,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:21:06,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568313127] [2024-06-27 23:21:06,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:06,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:21:06,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:06,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:21:06,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:21:06,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:21:06,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 364 transitions, 5371 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) [2024-06-27 23:21:06,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:06,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:21:06,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:07,206 INFO L124 PetriNetUnfolderBase]: 652/1194 cut-off events. [2024-06-27 23:21:07,206 INFO L125 PetriNetUnfolderBase]: For 412293/412294 co-relation queries the response was YES. [2024-06-27 23:21:07,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15326 conditions, 1194 events. 652/1194 cut-off events. For 412293/412294 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6531 event pairs, 64 based on Foata normal form. 3/1187 useless extension candidates. Maximal degree in co-relation 15136. Up to 995 conditions per place. [2024-06-27 23:21:07,226 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 310 selfloop transitions, 23 changer transitions 0/380 dead transitions. [2024-06-27 23:21:07,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 380 transitions, 6397 flow [2024-06-27 23:21:07,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:21:07,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:21:07,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 156 transitions. [2024-06-27 23:21:07,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 23:21:07,227 INFO L175 Difference]: Start difference. First operand has 389 places, 364 transitions, 5371 flow. Second operand 13 states and 156 transitions. [2024-06-27 23:21:07,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 380 transitions, 6397 flow [2024-06-27 23:21:09,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 380 transitions, 6200 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-27 23:21:09,093 INFO L231 Difference]: Finished difference. Result has 397 places, 366 transitions, 5290 flow [2024-06-27 23:21:09,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5174, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5290, PETRI_PLACES=397, PETRI_TRANSITIONS=366} [2024-06-27 23:21:09,094 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 366 predicate places. [2024-06-27 23:21:09,094 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 366 transitions, 5290 flow [2024-06-27 23:21:09,094 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) [2024-06-27 23:21:09,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:09,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:09,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 23:21:09,094 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)] === [2024-06-27 23:21:09,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:09,095 INFO L85 PathProgramCache]: Analyzing trace with hash -439556891, now seen corresponding path program 4 times [2024-06-27 23:21:09,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:09,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088381725] [2024-06-27 23:21:09,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:09,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:11,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:11,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:11,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088381725] [2024-06-27 23:21:11,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088381725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:11,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:11,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:11,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417388910] [2024-06-27 23:21:11,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:11,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:11,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:11,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:11,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:11,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:21:11,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 366 transitions, 5290 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) [2024-06-27 23:21:11,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:11,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:21:11,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:12,605 INFO L124 PetriNetUnfolderBase]: 656/1202 cut-off events. [2024-06-27 23:21:12,606 INFO L125 PetriNetUnfolderBase]: For 418265/418266 co-relation queries the response was YES. [2024-06-27 23:21:12,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15294 conditions, 1202 events. 656/1202 cut-off events. For 418265/418266 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6577 event pairs, 66 based on Foata normal form. 3/1195 useless extension candidates. Maximal degree in co-relation 15102. Up to 1022 conditions per place. [2024-06-27 23:21:12,623 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 311 selfloop transitions, 21 changer transitions 0/379 dead transitions. [2024-06-27 23:21:12,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 379 transitions, 6014 flow [2024-06-27 23:21:12,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:21:12,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:21:12,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-27 23:21:12,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-27 23:21:12,624 INFO L175 Difference]: Start difference. First operand has 397 places, 366 transitions, 5290 flow. Second operand 12 states and 147 transitions. [2024-06-27 23:21:12,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 379 transitions, 6014 flow [2024-06-27 23:21:14,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 379 transitions, 5935 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-27 23:21:14,366 INFO L231 Difference]: Finished difference. Result has 400 places, 367 transitions, 5293 flow [2024-06-27 23:21:14,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5221, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5293, PETRI_PLACES=400, PETRI_TRANSITIONS=367} [2024-06-27 23:21:14,366 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 369 predicate places. [2024-06-27 23:21:14,366 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 367 transitions, 5293 flow [2024-06-27 23:21:14,366 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) [2024-06-27 23:21:14,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:14,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:14,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 23:21:14,367 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)] === [2024-06-27 23:21:14,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:14,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1514475172, now seen corresponding path program 8 times [2024-06-27 23:21:14,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:14,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702430499] [2024-06-27 23:21:14,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:14,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:16,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:16,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:16,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702430499] [2024-06-27 23:21:16,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702430499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:16,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:16,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:16,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141401549] [2024-06-27 23:21:16,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:16,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:16,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:16,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:16,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:16,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:21:16,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 367 transitions, 5293 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) [2024-06-27 23:21:16,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:16,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:21:16,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:17,320 INFO L124 PetriNetUnfolderBase]: 690/1241 cut-off events. [2024-06-27 23:21:17,320 INFO L125 PetriNetUnfolderBase]: For 399396/399396 co-relation queries the response was YES. [2024-06-27 23:21:17,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15346 conditions, 1241 events. 690/1241 cut-off events. For 399396/399396 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6673 event pairs, 41 based on Foata normal form. 1/1238 useless extension candidates. Maximal degree in co-relation 15152. Up to 1097 conditions per place. [2024-06-27 23:21:17,338 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 331 selfloop transitions, 42 changer transitions 0/376 dead transitions. [2024-06-27 23:21:17,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 376 transitions, 6059 flow [2024-06-27 23:21:17,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:21:17,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:21:17,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-27 23:21:17,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340277777777778 [2024-06-27 23:21:17,339 INFO L175 Difference]: Start difference. First operand has 400 places, 367 transitions, 5293 flow. Second operand 9 states and 125 transitions. [2024-06-27 23:21:17,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 376 transitions, 6059 flow [2024-06-27 23:21:18,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 376 transitions, 5977 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-27 23:21:18,862 INFO L231 Difference]: Finished difference. Result has 399 places, 367 transitions, 5300 flow [2024-06-27 23:21:18,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5211, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5300, PETRI_PLACES=399, PETRI_TRANSITIONS=367} [2024-06-27 23:21:18,864 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 368 predicate places. [2024-06-27 23:21:18,864 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 367 transitions, 5300 flow [2024-06-27 23:21:18,864 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) [2024-06-27 23:21:18,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:18,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:18,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 23:21:18,865 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)] === [2024-06-27 23:21:18,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:18,865 INFO L85 PathProgramCache]: Analyzing trace with hash -764298352, now seen corresponding path program 9 times [2024-06-27 23:21:18,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:18,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390238168] [2024-06-27 23:21:18,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:18,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:21,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:21,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:21,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390238168] [2024-06-27 23:21:21,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390238168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:21,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:21,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:21,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320270890] [2024-06-27 23:21:21,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:21,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:21,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:21,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:21,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:21,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:21:21,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 367 transitions, 5300 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) [2024-06-27 23:21:21,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:21,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:21:21,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:21,543 INFO L124 PetriNetUnfolderBase]: 693/1246 cut-off events. [2024-06-27 23:21:21,543 INFO L125 PetriNetUnfolderBase]: For 405065/405065 co-relation queries the response was YES. [2024-06-27 23:21:21,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15426 conditions, 1246 events. 693/1246 cut-off events. For 405065/405065 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6705 event pairs, 41 based on Foata normal form. 1/1243 useless extension candidates. Maximal degree in co-relation 15233. Up to 1013 conditions per place. [2024-06-27 23:21:21,561 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 301 selfloop transitions, 74 changer transitions 0/379 dead transitions. [2024-06-27 23:21:21,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 379 transitions, 6388 flow [2024-06-27 23:21:21,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:21:21,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:21:21,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-06-27 23:21:21,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756944444444444 [2024-06-27 23:21:21,563 INFO L175 Difference]: Start difference. First operand has 399 places, 367 transitions, 5300 flow. Second operand 9 states and 137 transitions. [2024-06-27 23:21:21,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 379 transitions, 6388 flow [2024-06-27 23:21:23,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 379 transitions, 6263 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 23:21:23,152 INFO L231 Difference]: Finished difference. Result has 398 places, 369 transitions, 5372 flow [2024-06-27 23:21:23,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5175, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5372, PETRI_PLACES=398, PETRI_TRANSITIONS=369} [2024-06-27 23:21:23,153 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 367 predicate places. [2024-06-27 23:21:23,153 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 369 transitions, 5372 flow [2024-06-27 23:21:23,153 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) [2024-06-27 23:21:23,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:23,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:23,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 23:21:23,154 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)] === [2024-06-27 23:21:23,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:23,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1019886059, now seen corresponding path program 16 times [2024-06-27 23:21:23,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:23,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897512865] [2024-06-27 23:21:23,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:23,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:24,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:24,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:24,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897512865] [2024-06-27 23:21:24,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897512865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:24,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:24,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:24,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033650761] [2024-06-27 23:21:24,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:24,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:24,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:24,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:24,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:24,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:21:24,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 369 transitions, 5372 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) [2024-06-27 23:21:24,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:24,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:21:24,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:25,339 INFO L124 PetriNetUnfolderBase]: 699/1257 cut-off events. [2024-06-27 23:21:25,340 INFO L125 PetriNetUnfolderBase]: For 419996/419996 co-relation queries the response was YES. [2024-06-27 23:21:25,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15616 conditions, 1257 events. 699/1257 cut-off events. For 419996/419996 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6773 event pairs, 49 based on Foata normal form. 2/1253 useless extension candidates. Maximal degree in co-relation 15422. Up to 1006 conditions per place. [2024-06-27 23:21:25,358 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 302 selfloop transitions, 80 changer transitions 0/385 dead transitions. [2024-06-27 23:21:25,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 385 transitions, 6581 flow [2024-06-27 23:21:25,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:21:25,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:21:25,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-27 23:21:25,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618055555555556 [2024-06-27 23:21:25,360 INFO L175 Difference]: Start difference. First operand has 398 places, 369 transitions, 5372 flow. Second operand 9 states and 133 transitions. [2024-06-27 23:21:25,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 385 transitions, 6581 flow [2024-06-27 23:21:26,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 385 transitions, 6385 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 23:21:26,869 INFO L231 Difference]: Finished difference. Result has 399 places, 373 transitions, 5435 flow [2024-06-27 23:21:26,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5176, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5435, PETRI_PLACES=399, PETRI_TRANSITIONS=373} [2024-06-27 23:21:26,870 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 368 predicate places. [2024-06-27 23:21:26,870 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 373 transitions, 5435 flow [2024-06-27 23:21:26,870 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) [2024-06-27 23:21:26,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:26,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:26,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 23:21:26,871 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)] === [2024-06-27 23:21:26,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:26,871 INFO L85 PathProgramCache]: Analyzing trace with hash -450598781, now seen corresponding path program 5 times [2024-06-27 23:21:26,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:26,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560607457] [2024-06-27 23:21:26,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:26,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:30,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:30,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:30,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560607457] [2024-06-27 23:21:30,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560607457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:30,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:30,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:30,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806552840] [2024-06-27 23:21:30,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:30,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:30,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:30,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:30,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:30,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:21:30,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 373 transitions, 5435 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) [2024-06-27 23:21:30,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:30,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:21:30,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:31,419 INFO L124 PetriNetUnfolderBase]: 660/1209 cut-off events. [2024-06-27 23:21:31,419 INFO L125 PetriNetUnfolderBase]: For 407437/407438 co-relation queries the response was YES. [2024-06-27 23:21:31,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15066 conditions, 1209 events. 660/1209 cut-off events. For 407437/407438 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6636 event pairs, 77 based on Foata normal form. 3/1202 useless extension candidates. Maximal degree in co-relation 14873. Up to 1034 conditions per place. [2024-06-27 23:21:31,437 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 318 selfloop transitions, 17 changer transitions 0/383 dead transitions. [2024-06-27 23:21:31,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 383 transitions, 6127 flow [2024-06-27 23:21:31,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:21:31,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:21:31,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:21:31,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 23:21:31,438 INFO L175 Difference]: Start difference. First operand has 399 places, 373 transitions, 5435 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:21:31,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 383 transitions, 6127 flow [2024-06-27 23:21:33,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 383 transitions, 5964 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-27 23:21:33,261 INFO L231 Difference]: Finished difference. Result has 404 places, 373 transitions, 5310 flow [2024-06-27 23:21:33,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5272, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5310, PETRI_PLACES=404, PETRI_TRANSITIONS=373} [2024-06-27 23:21:33,262 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 373 predicate places. [2024-06-27 23:21:33,262 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 373 transitions, 5310 flow [2024-06-27 23:21:33,262 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) [2024-06-27 23:21:33,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:33,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:33,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 23:21:33,263 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)] === [2024-06-27 23:21:33,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:33,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1255601302, now seen corresponding path program 10 times [2024-06-27 23:21:33,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:33,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115507748] [2024-06-27 23:21:33,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:33,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:33,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:35,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:35,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:35,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115507748] [2024-06-27 23:21:35,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115507748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:35,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:35,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:35,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144342665] [2024-06-27 23:21:35,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:35,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:35,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:35,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:35,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:36,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:21:36,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 373 transitions, 5310 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:36,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:36,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:21:36,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:36,873 INFO L124 PetriNetUnfolderBase]: 693/1247 cut-off events. [2024-06-27 23:21:36,874 INFO L125 PetriNetUnfolderBase]: For 393331/393331 co-relation queries the response was YES. [2024-06-27 23:21:36,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15080 conditions, 1247 events. 693/1247 cut-off events. For 393331/393331 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6705 event pairs, 76 based on Foata normal form. 1/1246 useless extension candidates. Maximal degree in co-relation 14884. Up to 1150 conditions per place. [2024-06-27 23:21:36,891 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 353 selfloop transitions, 28 changer transitions 0/384 dead transitions. [2024-06-27 23:21:36,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 384 transitions, 6096 flow [2024-06-27 23:21:36,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:21:36,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:21:36,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-27 23:21:36,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-27 23:21:36,893 INFO L175 Difference]: Start difference. First operand has 404 places, 373 transitions, 5310 flow. Second operand 12 states and 136 transitions. [2024-06-27 23:21:36,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 384 transitions, 6096 flow [2024-06-27 23:21:38,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 384 transitions, 6032 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 23:21:38,482 INFO L231 Difference]: Finished difference. Result has 407 places, 373 transitions, 5313 flow [2024-06-27 23:21:38,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5246, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5313, PETRI_PLACES=407, PETRI_TRANSITIONS=373} [2024-06-27 23:21:38,483 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 376 predicate places. [2024-06-27 23:21:38,483 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 373 transitions, 5313 flow [2024-06-27 23:21:38,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:38,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:38,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:38,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 23:21:38,484 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)] === [2024-06-27 23:21:38,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:38,484 INFO L85 PathProgramCache]: Analyzing trace with hash -764298011, now seen corresponding path program 6 times [2024-06-27 23:21:38,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:38,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956368343] [2024-06-27 23:21:38,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:38,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:40,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:40,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:40,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956368343] [2024-06-27 23:21:40,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956368343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:40,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:40,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:40,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101570911] [2024-06-27 23:21:40,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:40,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:40,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:40,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:40,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:40,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-27 23:21:40,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 373 transitions, 5313 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) [2024-06-27 23:21:40,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:40,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-27 23:21:40,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:41,142 INFO L124 PetriNetUnfolderBase]: 654/1201 cut-off events. [2024-06-27 23:21:41,143 INFO L125 PetriNetUnfolderBase]: For 395302/395303 co-relation queries the response was YES. [2024-06-27 23:21:41,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14567 conditions, 1201 events. 654/1201 cut-off events. For 395302/395303 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6604 event pairs, 45 based on Foata normal form. 3/1197 useless extension candidates. Maximal degree in co-relation 14371. Up to 967 conditions per place. [2024-06-27 23:21:41,161 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 295 selfloop transitions, 39 changer transitions 0/383 dead transitions. [2024-06-27 23:21:41,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 383 transitions, 6003 flow [2024-06-27 23:21:41,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:21:41,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:21:41,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-27 23:21:41,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-27 23:21:41,162 INFO L175 Difference]: Start difference. First operand has 407 places, 373 transitions, 5313 flow. Second operand 9 states and 140 transitions. [2024-06-27 23:21:41,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 383 transitions, 6003 flow [2024-06-27 23:21:42,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 383 transitions, 5942 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 23:21:42,776 INFO L231 Difference]: Finished difference. Result has 405 places, 373 transitions, 5334 flow [2024-06-27 23:21:42,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5252, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5334, PETRI_PLACES=405, PETRI_TRANSITIONS=373} [2024-06-27 23:21:42,777 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 374 predicate places. [2024-06-27 23:21:42,777 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 373 transitions, 5334 flow [2024-06-27 23:21:42,777 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) [2024-06-27 23:21:42,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:42,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:42,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 23:21:42,777 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)] === [2024-06-27 23:21:42,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:42,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1533596342, now seen corresponding path program 11 times [2024-06-27 23:21:42,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:42,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425934907] [2024-06-27 23:21:42,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:42,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:45,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:45,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:45,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425934907] [2024-06-27 23:21:45,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425934907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:45,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:45,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:45,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023829041] [2024-06-27 23:21:45,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:45,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:45,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:45,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:45,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:45,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:21:45,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 373 transitions, 5334 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) [2024-06-27 23:21:45,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:45,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:21:45,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:46,412 INFO L124 PetriNetUnfolderBase]: 688/1238 cut-off events. [2024-06-27 23:21:46,413 INFO L125 PetriNetUnfolderBase]: For 369367/369367 co-relation queries the response was YES. [2024-06-27 23:21:46,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14664 conditions, 1238 events. 688/1238 cut-off events. For 369367/369367 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6675 event pairs, 39 based on Foata normal form. 1/1235 useless extension candidates. Maximal degree in co-relation 14467. Up to 1015 conditions per place. [2024-06-27 23:21:46,431 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 310 selfloop transitions, 69 changer transitions 0/382 dead transitions. [2024-06-27 23:21:46,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 382 transitions, 6112 flow [2024-06-27 23:21:46,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:21:46,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:21:46,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2024-06-27 23:21:46,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409722222222222 [2024-06-27 23:21:46,432 INFO L175 Difference]: Start difference. First operand has 405 places, 373 transitions, 5334 flow. Second operand 9 states and 127 transitions. [2024-06-27 23:21:46,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 382 transitions, 6112 flow [2024-06-27 23:21:47,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 382 transitions, 5908 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-06-27 23:21:47,788 INFO L231 Difference]: Finished difference. Result has 404 places, 373 transitions, 5273 flow [2024-06-27 23:21:47,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5130, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5273, PETRI_PLACES=404, PETRI_TRANSITIONS=373} [2024-06-27 23:21:47,788 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 373 predicate places. [2024-06-27 23:21:47,788 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 373 transitions, 5273 flow [2024-06-27 23:21:47,789 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) [2024-06-27 23:21:47,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:47,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:47,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 23:21:47,789 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)] === [2024-06-27 23:21:47,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:47,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1012736436, now seen corresponding path program 12 times [2024-06-27 23:21:47,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:47,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343937684] [2024-06-27 23:21:47,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:47,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:49,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:49,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:49,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343937684] [2024-06-27 23:21:49,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343937684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:49,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:49,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:21:49,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59629533] [2024-06-27 23:21:49,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:49,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:21:49,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:49,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:21:49,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:21:49,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:21:49,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 373 transitions, 5273 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:49,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:49,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:21:49,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:50,512 INFO L124 PetriNetUnfolderBase]: 691/1246 cut-off events. [2024-06-27 23:21:50,512 INFO L125 PetriNetUnfolderBase]: For 374526/374526 co-relation queries the response was YES. [2024-06-27 23:21:50,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14681 conditions, 1246 events. 691/1246 cut-off events. For 374526/374526 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6719 event pairs, 47 based on Foata normal form. 1/1241 useless extension candidates. Maximal degree in co-relation 14485. Up to 970 conditions per place. [2024-06-27 23:21:50,531 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 286 selfloop transitions, 96 changer transitions 0/385 dead transitions. [2024-06-27 23:21:50,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 385 transitions, 6419 flow [2024-06-27 23:21:50,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:21:50,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:21:50,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 23:21:50,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-27 23:21:50,532 INFO L175 Difference]: Start difference. First operand has 404 places, 373 transitions, 5273 flow. Second operand 11 states and 142 transitions. [2024-06-27 23:21:50,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 385 transitions, 6419 flow [2024-06-27 23:21:51,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 385 transitions, 6197 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-27 23:21:51,982 INFO L231 Difference]: Finished difference. Result has 404 places, 375 transitions, 5332 flow [2024-06-27 23:21:51,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5055, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5332, PETRI_PLACES=404, PETRI_TRANSITIONS=375} [2024-06-27 23:21:51,983 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 373 predicate places. [2024-06-27 23:21:51,983 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 375 transitions, 5332 flow [2024-06-27 23:21:51,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:51,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:51,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:51,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 23:21:51,984 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)] === [2024-06-27 23:21:51,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:51,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1514482891, now seen corresponding path program 17 times [2024-06-27 23:21:51,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:51,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068761688] [2024-06-27 23:21:51,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:51,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:53,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:53,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:53,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068761688] [2024-06-27 23:21:53,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068761688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:53,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:53,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:53,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125652885] [2024-06-27 23:21:53,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:53,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:53,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:53,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:53,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:54,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:21:54,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 375 transitions, 5332 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) [2024-06-27 23:21:54,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:54,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:21:54,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:54,464 INFO L124 PetriNetUnfolderBase]: 689/1243 cut-off events. [2024-06-27 23:21:54,464 INFO L125 PetriNetUnfolderBase]: For 357714/357714 co-relation queries the response was YES. [2024-06-27 23:21:54,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14429 conditions, 1243 events. 689/1243 cut-off events. For 357714/357714 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6736 event pairs, 58 based on Foata normal form. 1/1238 useless extension candidates. Maximal degree in co-relation 14234. Up to 979 conditions per place. [2024-06-27 23:21:54,483 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 296 selfloop transitions, 86 changer transitions 0/385 dead transitions. [2024-06-27 23:21:54,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 385 transitions, 6400 flow [2024-06-27 23:21:54,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:21:54,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:21:54,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-27 23:21:54,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618055555555556 [2024-06-27 23:21:54,484 INFO L175 Difference]: Start difference. First operand has 404 places, 375 transitions, 5332 flow. Second operand 9 states and 133 transitions. [2024-06-27 23:21:54,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 385 transitions, 6400 flow [2024-06-27 23:21:56,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 385 transitions, 6089 flow, removed 61 selfloop flow, removed 9 redundant places. [2024-06-27 23:21:56,069 INFO L231 Difference]: Finished difference. Result has 404 places, 375 transitions, 5198 flow [2024-06-27 23:21:56,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5021, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5198, PETRI_PLACES=404, PETRI_TRANSITIONS=375} [2024-06-27 23:21:56,069 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 373 predicate places. [2024-06-27 23:21:56,069 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 375 transitions, 5198 flow [2024-06-27 23:21:56,070 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) [2024-06-27 23:21:56,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:56,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:56,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 23:21:56,070 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)] === [2024-06-27 23:21:56,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:56,070 INFO L85 PathProgramCache]: Analyzing trace with hash -764567401, now seen corresponding path program 18 times [2024-06-27 23:21:56,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:56,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22097528] [2024-06-27 23:21:56,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:56,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:57,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:57,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:57,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22097528] [2024-06-27 23:21:57,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22097528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:57,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:57,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:57,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21735450] [2024-06-27 23:21:57,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:57,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:57,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:57,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:57,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:57,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:21:57,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 375 transitions, 5198 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) [2024-06-27 23:21:57,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:57,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:21:57,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:58,364 INFO L124 PetriNetUnfolderBase]: 692/1248 cut-off events. [2024-06-27 23:21:58,364 INFO L125 PetriNetUnfolderBase]: For 368607/368607 co-relation queries the response was YES. [2024-06-27 23:21:58,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14378 conditions, 1248 events. 692/1248 cut-off events. For 368607/368607 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 6758 event pairs, 43 based on Foata normal form. 1/1243 useless extension candidates. Maximal degree in co-relation 14184. Up to 690 conditions per place. [2024-06-27 23:21:58,382 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 218 selfloop transitions, 167 changer transitions 0/389 dead transitions. [2024-06-27 23:21:58,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 389 transitions, 6650 flow [2024-06-27 23:21:58,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:21:58,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:21:58,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-27 23:21:58,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 23:21:58,384 INFO L175 Difference]: Start difference. First operand has 404 places, 375 transitions, 5198 flow. Second operand 9 states and 144 transitions. [2024-06-27 23:21:58,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 389 transitions, 6650 flow [2024-06-27 23:22:00,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 389 transitions, 6471 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 23:22:00,161 INFO L231 Difference]: Finished difference. Result has 405 places, 377 transitions, 5406 flow [2024-06-27 23:22:00,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5019, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5406, PETRI_PLACES=405, PETRI_TRANSITIONS=377} [2024-06-27 23:22:00,162 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 374 predicate places. [2024-06-27 23:22:00,162 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 377 transitions, 5406 flow [2024-06-27 23:22:00,162 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) [2024-06-27 23:22:00,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:00,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:00,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 23:22:00,163 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)] === [2024-06-27 23:22:00,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:00,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1020088086, now seen corresponding path program 13 times [2024-06-27 23:22:00,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:00,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303465467] [2024-06-27 23:22:00,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:00,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:02,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:02,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303465467] [2024-06-27 23:22:02,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303465467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:02,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:02,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:02,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180947062] [2024-06-27 23:22:02,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:02,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:02,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:02,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:02,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:02,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:22:02,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 377 transitions, 5406 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:02,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:02,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:22:02,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:03,027 INFO L124 PetriNetUnfolderBase]: 690/1245 cut-off events. [2024-06-27 23:22:03,027 INFO L125 PetriNetUnfolderBase]: For 357257/357257 co-relation queries the response was YES. [2024-06-27 23:22:03,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14417 conditions, 1245 events. 690/1245 cut-off events. For 357257/357257 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 6743 event pairs, 59 based on Foata normal form. 1/1240 useless extension candidates. Maximal degree in co-relation 14221. Up to 991 conditions per place. [2024-06-27 23:22:03,047 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 296 selfloop transitions, 87 changer transitions 0/386 dead transitions. [2024-06-27 23:22:03,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 386 transitions, 6192 flow [2024-06-27 23:22:03,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:22:03,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:22:03,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-27 23:22:03,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 23:22:03,048 INFO L175 Difference]: Start difference. First operand has 405 places, 377 transitions, 5406 flow. Second operand 10 states and 130 transitions. [2024-06-27 23:22:03,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 386 transitions, 6192 flow [2024-06-27 23:22:04,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 386 transitions, 5767 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-27 23:22:04,725 INFO L231 Difference]: Finished difference. Result has 408 places, 377 transitions, 5160 flow [2024-06-27 23:22:04,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4981, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5160, PETRI_PLACES=408, PETRI_TRANSITIONS=377} [2024-06-27 23:22:04,725 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 377 predicate places. [2024-06-27 23:22:04,726 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 377 transitions, 5160 flow [2024-06-27 23:22:04,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:04,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:04,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:04,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 23:22:04,726 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)] === [2024-06-27 23:22:04,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:04,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1020087869, now seen corresponding path program 19 times [2024-06-27 23:22:04,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:04,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352483509] [2024-06-27 23:22:04,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:04,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:06,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:06,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:06,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352483509] [2024-06-27 23:22:06,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352483509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:06,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:06,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:06,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200902540] [2024-06-27 23:22:06,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:06,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:06,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:06,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:06,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:06,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:22:06,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 377 transitions, 5160 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) [2024-06-27 23:22:06,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:06,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:22:06,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:06,767 INFO L124 PetriNetUnfolderBase]: 688/1244 cut-off events. [2024-06-27 23:22:06,768 INFO L125 PetriNetUnfolderBase]: For 350684/350684 co-relation queries the response was YES. [2024-06-27 23:22:06,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13971 conditions, 1244 events. 688/1244 cut-off events. For 350684/350684 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 6754 event pairs, 58 based on Foata normal form. 1/1239 useless extension candidates. Maximal degree in co-relation 13774. Up to 1021 conditions per place. [2024-06-27 23:22:06,784 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 314 selfloop transitions, 70 changer transitions 0/387 dead transitions. [2024-06-27 23:22:06,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 387 transitions, 5975 flow [2024-06-27 23:22:06,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:22:06,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:22:06,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 23:22:06,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-27 23:22:06,785 INFO L175 Difference]: Start difference. First operand has 408 places, 377 transitions, 5160 flow. Second operand 10 states and 133 transitions. [2024-06-27 23:22:06,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 387 transitions, 5975 flow [2024-06-27 23:22:08,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 387 transitions, 5724 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-27 23:22:08,740 INFO L231 Difference]: Finished difference. Result has 408 places, 378 transitions, 5083 flow [2024-06-27 23:22:08,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4921, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5083, PETRI_PLACES=408, PETRI_TRANSITIONS=378} [2024-06-27 23:22:08,741 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 377 predicate places. [2024-06-27 23:22:08,741 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 378 transitions, 5083 flow [2024-06-27 23:22:08,741 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) [2024-06-27 23:22:08,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:08,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:08,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 23:22:08,741 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)] === [2024-06-27 23:22:08,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:08,742 INFO L85 PathProgramCache]: Analyzing trace with hash -764575058, now seen corresponding path program 14 times [2024-06-27 23:22:08,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:08,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59859738] [2024-06-27 23:22:08,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:08,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:10,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:10,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:10,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59859738] [2024-06-27 23:22:10,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59859738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:10,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:10,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:10,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424927399] [2024-06-27 23:22:10,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:10,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:10,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:10,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:10,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:10,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:22:10,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 378 transitions, 5083 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:10,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:10,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:22:10,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:11,123 INFO L124 PetriNetUnfolderBase]: 691/1253 cut-off events. [2024-06-27 23:22:11,123 INFO L125 PetriNetUnfolderBase]: For 364257/364257 co-relation queries the response was YES. [2024-06-27 23:22:11,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13983 conditions, 1253 events. 691/1253 cut-off events. For 364257/364257 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 6840 event pairs, 45 based on Foata normal form. 1/1248 useless extension candidates. Maximal degree in co-relation 13786. Up to 803 conditions per place. [2024-06-27 23:22:11,141 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 236 selfloop transitions, 154 changer transitions 0/393 dead transitions. [2024-06-27 23:22:11,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 393 transitions, 6369 flow [2024-06-27 23:22:11,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:22:11,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:22:11,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 23:22:11,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-27 23:22:11,142 INFO L175 Difference]: Start difference. First operand has 408 places, 378 transitions, 5083 flow. Second operand 10 states and 133 transitions. [2024-06-27 23:22:11,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 393 transitions, 6369 flow [2024-06-27 23:22:12,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 393 transitions, 6222 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 23:22:12,688 INFO L231 Difference]: Finished difference. Result has 411 places, 383 transitions, 5552 flow [2024-06-27 23:22:12,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4936, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5552, PETRI_PLACES=411, PETRI_TRANSITIONS=383} [2024-06-27 23:22:12,688 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 380 predicate places. [2024-06-27 23:22:12,688 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 383 transitions, 5552 flow [2024-06-27 23:22:12,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:12,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:12,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:12,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 23:22:12,689 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)] === [2024-06-27 23:22:12,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:12,690 INFO L85 PathProgramCache]: Analyzing trace with hash -764574841, now seen corresponding path program 20 times [2024-06-27 23:22:12,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:12,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909475412] [2024-06-27 23:22:12,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:12,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:14,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:14,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:14,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909475412] [2024-06-27 23:22:14,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909475412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:14,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:14,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:14,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179391413] [2024-06-27 23:22:14,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:14,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:14,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:14,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:14,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:14,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:22:14,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 383 transitions, 5552 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) [2024-06-27 23:22:14,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:14,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:22:14,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:14,955 INFO L124 PetriNetUnfolderBase]: 697/1261 cut-off events. [2024-06-27 23:22:14,955 INFO L125 PetriNetUnfolderBase]: For 380013/380013 co-relation queries the response was YES. [2024-06-27 23:22:14,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14502 conditions, 1261 events. 697/1261 cut-off events. For 380013/380013 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 6873 event pairs, 46 based on Foata normal form. 2/1257 useless extension candidates. Maximal degree in co-relation 14303. Up to 628 conditions per place. [2024-06-27 23:22:14,974 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 224 selfloop transitions, 174 changer transitions 0/401 dead transitions. [2024-06-27 23:22:14,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 401 transitions, 7151 flow [2024-06-27 23:22:14,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:22:14,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:22:14,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-27 23:22:14,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-27 23:22:14,975 INFO L175 Difference]: Start difference. First operand has 411 places, 383 transitions, 5552 flow. Second operand 9 states and 140 transitions. [2024-06-27 23:22:14,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 401 transitions, 7151 flow [2024-06-27 23:22:16,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 401 transitions, 6913 flow, removed 65 selfloop flow, removed 6 redundant places. [2024-06-27 23:22:16,473 INFO L231 Difference]: Finished difference. Result has 415 places, 390 transitions, 5969 flow [2024-06-27 23:22:16,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5314, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5969, PETRI_PLACES=415, PETRI_TRANSITIONS=390} [2024-06-27 23:22:16,474 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 384 predicate places. [2024-06-27 23:22:16,474 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 390 transitions, 5969 flow [2024-06-27 23:22:16,474 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) [2024-06-27 23:22:16,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:16,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:16,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 23:22:16,474 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)] === [2024-06-27 23:22:16,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:16,475 INFO L85 PathProgramCache]: Analyzing trace with hash -960790656, now seen corresponding path program 15 times [2024-06-27 23:22:16,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:16,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991217181] [2024-06-27 23:22:16,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:16,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:17,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:17,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:17,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991217181] [2024-06-27 23:22:17,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991217181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:17,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:17,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:17,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135347110] [2024-06-27 23:22:17,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:17,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:17,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:17,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:17,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:18,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:22:18,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 390 transitions, 5969 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:18,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:18,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:22:18,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:18,629 INFO L124 PetriNetUnfolderBase]: 700/1265 cut-off events. [2024-06-27 23:22:18,630 INFO L125 PetriNetUnfolderBase]: For 375106/375106 co-relation queries the response was YES. [2024-06-27 23:22:18,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14969 conditions, 1265 events. 700/1265 cut-off events. For 375106/375106 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 6904 event pairs, 34 based on Foata normal form. 1/1264 useless extension candidates. Maximal degree in co-relation 14768. Up to 1107 conditions per place. [2024-06-27 23:22:18,648 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 362 selfloop transitions, 44 changer transitions 0/409 dead transitions. [2024-06-27 23:22:18,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 409 transitions, 6907 flow [2024-06-27 23:22:18,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:18,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:18,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 23:22:18,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-27 23:22:18,649 INFO L175 Difference]: Start difference. First operand has 415 places, 390 transitions, 5969 flow. Second operand 11 states and 138 transitions. [2024-06-27 23:22:18,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 409 transitions, 6907 flow [2024-06-27 23:22:20,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 409 transitions, 6718 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-06-27 23:22:20,243 INFO L231 Difference]: Finished difference. Result has 422 places, 392 transitions, 5959 flow [2024-06-27 23:22:20,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5780, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5959, PETRI_PLACES=422, PETRI_TRANSITIONS=392} [2024-06-27 23:22:20,243 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 391 predicate places. [2024-06-27 23:22:20,243 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 392 transitions, 5959 flow [2024-06-27 23:22:20,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:20,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:20,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:20,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 23:22:20,244 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)] === [2024-06-27 23:22:20,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:20,244 INFO L85 PathProgramCache]: Analyzing trace with hash -653266902, now seen corresponding path program 16 times [2024-06-27 23:22:20,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:20,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175563511] [2024-06-27 23:22:20,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:20,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:22,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:22,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:22,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175563511] [2024-06-27 23:22:22,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175563511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:22,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:22,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:22,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617240626] [2024-06-27 23:22:22,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:22,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:22,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:22,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:22,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:22,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:22:22,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 392 transitions, 5959 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:22,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:22,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:22:22,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:23,306 INFO L124 PetriNetUnfolderBase]: 703/1272 cut-off events. [2024-06-27 23:22:23,307 INFO L125 PetriNetUnfolderBase]: For 372713/372713 co-relation queries the response was YES. [2024-06-27 23:22:23,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15058 conditions, 1272 events. 703/1272 cut-off events. For 372713/372713 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6940 event pairs, 46 based on Foata normal form. 1/1271 useless extension candidates. Maximal degree in co-relation 14854. Up to 1101 conditions per place. [2024-06-27 23:22:23,326 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 360 selfloop transitions, 48 changer transitions 0/411 dead transitions. [2024-06-27 23:22:23,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 411 transitions, 6903 flow [2024-06-27 23:22:23,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:23,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:23,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 23:22:23,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-27 23:22:23,327 INFO L175 Difference]: Start difference. First operand has 422 places, 392 transitions, 5959 flow. Second operand 11 states and 139 transitions. [2024-06-27 23:22:23,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 411 transitions, 6903 flow [2024-06-27 23:22:24,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 411 transitions, 6752 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-27 23:22:24,805 INFO L231 Difference]: Finished difference. Result has 424 places, 394 transitions, 5997 flow [2024-06-27 23:22:24,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5808, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5997, PETRI_PLACES=424, PETRI_TRANSITIONS=394} [2024-06-27 23:22:24,806 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 393 predicate places. [2024-06-27 23:22:24,806 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 394 transitions, 5997 flow [2024-06-27 23:22:24,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:24,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:24,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:24,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 23:22:24,808 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)] === [2024-06-27 23:22:24,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:24,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1974029184, now seen corresponding path program 17 times [2024-06-27 23:22:24,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:24,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698693244] [2024-06-27 23:22:24,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:24,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:26,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:26,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:26,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698693244] [2024-06-27 23:22:26,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698693244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:26,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:26,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:26,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914771766] [2024-06-27 23:22:26,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:26,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:26,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:26,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:26,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:26,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:22:26,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 394 transitions, 5997 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:26,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:26,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:22:26,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:26,956 INFO L124 PetriNetUnfolderBase]: 706/1277 cut-off events. [2024-06-27 23:22:26,956 INFO L125 PetriNetUnfolderBase]: For 378052/378052 co-relation queries the response was YES. [2024-06-27 23:22:26,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15149 conditions, 1277 events. 706/1277 cut-off events. For 378052/378052 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7002 event pairs, 48 based on Foata normal form. 1/1276 useless extension candidates. Maximal degree in co-relation 14944. Up to 1120 conditions per place. [2024-06-27 23:22:26,976 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 369 selfloop transitions, 40 changer transitions 0/412 dead transitions. [2024-06-27 23:22:26,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 412 transitions, 6945 flow [2024-06-27 23:22:26,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:26,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:26,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 23:22:26,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-27 23:22:26,977 INFO L175 Difference]: Start difference. First operand has 424 places, 394 transitions, 5997 flow. Second operand 11 states and 139 transitions. [2024-06-27 23:22:26,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 412 transitions, 6945 flow [2024-06-27 23:22:28,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 412 transitions, 6778 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-27 23:22:28,435 INFO L231 Difference]: Finished difference. Result has 426 places, 396 transitions, 6007 flow [2024-06-27 23:22:28,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5830, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6007, PETRI_PLACES=426, PETRI_TRANSITIONS=396} [2024-06-27 23:22:28,435 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 395 predicate places. [2024-06-27 23:22:28,435 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 396 transitions, 6007 flow [2024-06-27 23:22:28,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:28,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:28,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:28,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 23:22:28,436 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)] === [2024-06-27 23:22:28,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:28,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1973014554, now seen corresponding path program 18 times [2024-06-27 23:22:28,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:28,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811477521] [2024-06-27 23:22:28,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:28,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:30,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:30,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:30,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811477521] [2024-06-27 23:22:30,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811477521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:30,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:30,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:30,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675232372] [2024-06-27 23:22:30,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:30,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:30,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:30,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:30,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:30,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:22:30,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 396 transitions, 6007 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:30,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:30,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:22:30,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:31,003 INFO L124 PetriNetUnfolderBase]: 709/1283 cut-off events. [2024-06-27 23:22:31,004 INFO L125 PetriNetUnfolderBase]: For 383197/383197 co-relation queries the response was YES. [2024-06-27 23:22:31,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15202 conditions, 1283 events. 709/1283 cut-off events. For 383197/383197 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7029 event pairs, 49 based on Foata normal form. 1/1281 useless extension candidates. Maximal degree in co-relation 14996. Up to 1122 conditions per place. [2024-06-27 23:22:31,023 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 370 selfloop transitions, 41 changer transitions 0/414 dead transitions. [2024-06-27 23:22:31,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 414 transitions, 6961 flow [2024-06-27 23:22:31,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:31,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:31,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-27 23:22:31,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-27 23:22:31,024 INFO L175 Difference]: Start difference. First operand has 426 places, 396 transitions, 6007 flow. Second operand 11 states and 140 transitions. [2024-06-27 23:22:31,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 414 transitions, 6961 flow [2024-06-27 23:22:32,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 414 transitions, 6812 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-27 23:22:32,654 INFO L231 Difference]: Finished difference. Result has 428 places, 398 transitions, 6039 flow [2024-06-27 23:22:32,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5858, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6039, PETRI_PLACES=428, PETRI_TRANSITIONS=398} [2024-06-27 23:22:32,655 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 397 predicate places. [2024-06-27 23:22:32,655 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 398 transitions, 6039 flow [2024-06-27 23:22:32,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:32,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:32,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:32,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 23:22:32,655 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)] === [2024-06-27 23:22:32,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:32,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1616586934, now seen corresponding path program 19 times [2024-06-27 23:22:32,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:32,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769197668] [2024-06-27 23:22:32,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:32,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:34,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:34,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:34,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769197668] [2024-06-27 23:22:34,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769197668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:34,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:34,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:34,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665720392] [2024-06-27 23:22:34,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:34,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:34,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:34,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:34,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:34,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:22:34,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 398 transitions, 6039 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:34,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:34,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:22:34,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:34,964 INFO L124 PetriNetUnfolderBase]: 717/1299 cut-off events. [2024-06-27 23:22:34,964 INFO L125 PetriNetUnfolderBase]: For 401070/401070 co-relation queries the response was YES. [2024-06-27 23:22:34,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15596 conditions, 1299 events. 717/1299 cut-off events. For 401070/401070 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7184 event pairs, 44 based on Foata normal form. 1/1298 useless extension candidates. Maximal degree in co-relation 15389. Up to 1110 conditions per place. [2024-06-27 23:22:34,985 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 361 selfloop transitions, 54 changer transitions 0/418 dead transitions. [2024-06-27 23:22:34,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 418 transitions, 7399 flow [2024-06-27 23:22:34,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:34,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:34,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 23:22:34,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-27 23:22:34,988 INFO L175 Difference]: Start difference. First operand has 428 places, 398 transitions, 6039 flow. Second operand 11 states and 141 transitions. [2024-06-27 23:22:34,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 418 transitions, 7399 flow [2024-06-27 23:22:36,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 418 transitions, 7240 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-27 23:22:36,640 INFO L231 Difference]: Finished difference. Result has 431 places, 402 transitions, 6193 flow [2024-06-27 23:22:36,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5880, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6193, PETRI_PLACES=431, PETRI_TRANSITIONS=402} [2024-06-27 23:22:36,641 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 400 predicate places. [2024-06-27 23:22:36,641 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 402 transitions, 6193 flow [2024-06-27 23:22:36,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:36,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:36,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:36,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 23:22:36,642 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)] === [2024-06-27 23:22:36,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:36,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1801926550, now seen corresponding path program 20 times [2024-06-27 23:22:36,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:36,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350553136] [2024-06-27 23:22:36,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:36,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:38,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:38,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:38,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350553136] [2024-06-27 23:22:38,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350553136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:38,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:38,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:38,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199199567] [2024-06-27 23:22:38,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:38,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:38,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:38,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:38,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:39,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:22:39,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 402 transitions, 6193 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:39,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:39,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:22:39,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:39,791 INFO L124 PetriNetUnfolderBase]: 720/1306 cut-off events. [2024-06-27 23:22:39,792 INFO L125 PetriNetUnfolderBase]: For 406499/406499 co-relation queries the response was YES. [2024-06-27 23:22:39,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15713 conditions, 1306 events. 720/1306 cut-off events. For 406499/406499 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7224 event pairs, 40 based on Foata normal form. 1/1305 useless extension candidates. Maximal degree in co-relation 15504. Up to 1080 conditions per place. [2024-06-27 23:22:39,812 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 347 selfloop transitions, 70 changer transitions 0/420 dead transitions. [2024-06-27 23:22:39,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 420 transitions, 7469 flow [2024-06-27 23:22:39,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:39,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:39,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 23:22:39,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-27 23:22:39,814 INFO L175 Difference]: Start difference. First operand has 431 places, 402 transitions, 6193 flow. Second operand 11 states and 141 transitions. [2024-06-27 23:22:39,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 420 transitions, 7469 flow [2024-06-27 23:22:41,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 420 transitions, 7301 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-27 23:22:41,512 INFO L231 Difference]: Finished difference. Result has 435 places, 404 transitions, 6272 flow [2024-06-27 23:22:41,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6025, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6272, PETRI_PLACES=435, PETRI_TRANSITIONS=404} [2024-06-27 23:22:41,513 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 404 predicate places. [2024-06-27 23:22:41,513 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 404 transitions, 6272 flow [2024-06-27 23:22:41,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:41,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:41,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:41,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 23:22:41,513 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)] === [2024-06-27 23:22:41,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:41,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1053494328, now seen corresponding path program 21 times [2024-06-27 23:22:41,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:41,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976492821] [2024-06-27 23:22:41,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:41,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:42,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:42,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:42,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976492821] [2024-06-27 23:22:42,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976492821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:42,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:42,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:42,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355451937] [2024-06-27 23:22:42,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:42,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:42,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:42,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:42,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:43,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:22:43,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 404 transitions, 6272 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:43,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:43,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:22:43,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:43,629 INFO L124 PetriNetUnfolderBase]: 718/1303 cut-off events. [2024-06-27 23:22:43,629 INFO L125 PetriNetUnfolderBase]: For 399245/399245 co-relation queries the response was YES. [2024-06-27 23:22:43,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15563 conditions, 1303 events. 718/1303 cut-off events. For 399245/399245 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7209 event pairs, 45 based on Foata normal form. 1/1302 useless extension candidates. Maximal degree in co-relation 15352. Up to 1119 conditions per place. [2024-06-27 23:22:43,649 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 365 selfloop transitions, 51 changer transitions 0/419 dead transitions. [2024-06-27 23:22:43,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 419 transitions, 7142 flow [2024-06-27 23:22:43,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:43,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:43,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 23:22:43,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-27 23:22:43,668 INFO L175 Difference]: Start difference. First operand has 435 places, 404 transitions, 6272 flow. Second operand 11 states and 138 transitions. [2024-06-27 23:22:43,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 419 transitions, 7142 flow [2024-06-27 23:22:45,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 419 transitions, 6863 flow, removed 71 selfloop flow, removed 9 redundant places. [2024-06-27 23:22:45,384 INFO L231 Difference]: Finished difference. Result has 437 places, 404 transitions, 6100 flow [2024-06-27 23:22:45,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5993, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6100, PETRI_PLACES=437, PETRI_TRANSITIONS=404} [2024-06-27 23:22:45,384 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 406 predicate places. [2024-06-27 23:22:45,386 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 404 transitions, 6100 flow [2024-06-27 23:22:45,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:45,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:45,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:45,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 23:22:45,386 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)] === [2024-06-27 23:22:45,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:45,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1577316748, now seen corresponding path program 22 times [2024-06-27 23:22:45,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:45,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070463036] [2024-06-27 23:22:45,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:45,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:47,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:47,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:47,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070463036] [2024-06-27 23:22:47,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070463036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:47,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:47,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:47,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889426761] [2024-06-27 23:22:47,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:47,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:47,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:47,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:47,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:47,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:22:47,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 404 transitions, 6100 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:47,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:47,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:22:47,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:48,005 INFO L124 PetriNetUnfolderBase]: 721/1311 cut-off events. [2024-06-27 23:22:48,005 INFO L125 PetriNetUnfolderBase]: For 403640/403640 co-relation queries the response was YES. [2024-06-27 23:22:48,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15532 conditions, 1311 events. 721/1311 cut-off events. For 403640/403640 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7275 event pairs, 40 based on Foata normal form. 1/1310 useless extension candidates. Maximal degree in co-relation 15320. Up to 1142 conditions per place. [2024-06-27 23:22:48,025 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 378 selfloop transitions, 40 changer transitions 0/421 dead transitions. [2024-06-27 23:22:48,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 421 transitions, 7078 flow [2024-06-27 23:22:48,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:48,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:48,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-27 23:22:48,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-27 23:22:48,027 INFO L175 Difference]: Start difference. First operand has 437 places, 404 transitions, 6100 flow. Second operand 11 states and 140 transitions. [2024-06-27 23:22:48,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 421 transitions, 7078 flow [2024-06-27 23:22:49,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 421 transitions, 6969 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:22:49,815 INFO L231 Difference]: Finished difference. Result has 438 places, 406 transitions, 6182 flow [2024-06-27 23:22:49,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5991, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6182, PETRI_PLACES=438, PETRI_TRANSITIONS=406} [2024-06-27 23:22:49,815 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 407 predicate places. [2024-06-27 23:22:49,815 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 406 transitions, 6182 flow [2024-06-27 23:22:49,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:49,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:49,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:49,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 23:22:49,816 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)] === [2024-06-27 23:22:49,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:49,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1577311168, now seen corresponding path program 23 times [2024-06-27 23:22:49,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:49,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993891267] [2024-06-27 23:22:49,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:49,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:51,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:51,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:51,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993891267] [2024-06-27 23:22:51,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993891267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:51,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:51,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:51,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567672926] [2024-06-27 23:22:51,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:51,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:51,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:51,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:51,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:51,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:22:51,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 406 transitions, 6182 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:51,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:51,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:22:51,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:52,027 INFO L124 PetriNetUnfolderBase]: 724/1316 cut-off events. [2024-06-27 23:22:52,028 INFO L125 PetriNetUnfolderBase]: For 409890/409890 co-relation queries the response was YES. [2024-06-27 23:22:52,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15664 conditions, 1316 events. 724/1316 cut-off events. For 409890/409890 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 7282 event pairs, 40 based on Foata normal form. 1/1315 useless extension candidates. Maximal degree in co-relation 15451. Up to 1150 conditions per place. [2024-06-27 23:22:52,056 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 381 selfloop transitions, 39 changer transitions 0/423 dead transitions. [2024-06-27 23:22:52,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 423 transitions, 7164 flow [2024-06-27 23:22:52,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:52,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:52,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 23:22:52,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-27 23:22:52,058 INFO L175 Difference]: Start difference. First operand has 438 places, 406 transitions, 6182 flow. Second operand 11 states and 139 transitions. [2024-06-27 23:22:52,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 423 transitions, 7164 flow [2024-06-27 23:22:53,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 423 transitions, 6995 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-27 23:22:53,815 INFO L231 Difference]: Finished difference. Result has 440 places, 408 transitions, 6202 flow [2024-06-27 23:22:53,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6013, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6202, PETRI_PLACES=440, PETRI_TRANSITIONS=408} [2024-06-27 23:22:53,816 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 409 predicate places. [2024-06-27 23:22:53,816 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 408 transitions, 6202 flow [2024-06-27 23:22:53,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:53,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:53,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:53,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 23:22:53,817 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)] === [2024-06-27 23:22:53,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:53,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1721201698, now seen corresponding path program 24 times [2024-06-27 23:22:53,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:53,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542822204] [2024-06-27 23:22:53,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:53,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:55,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:55,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:55,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542822204] [2024-06-27 23:22:55,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542822204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:55,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:55,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:55,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037195261] [2024-06-27 23:22:55,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:55,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:55,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:55,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:55,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:55,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:22:55,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 408 transitions, 6202 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:55,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:55,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:22:55,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:56,257 INFO L124 PetriNetUnfolderBase]: 722/1313 cut-off events. [2024-06-27 23:22:56,257 INFO L125 PetriNetUnfolderBase]: For 401858/401858 co-relation queries the response was YES. [2024-06-27 23:22:56,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15402 conditions, 1313 events. 722/1313 cut-off events. For 401858/401858 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 7283 event pairs, 40 based on Foata normal form. 1/1312 useless extension candidates. Maximal degree in co-relation 15188. Up to 1138 conditions per place. [2024-06-27 23:22:56,278 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 377 selfloop transitions, 43 changer transitions 0/423 dead transitions. [2024-06-27 23:22:56,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 423 transitions, 7139 flow [2024-06-27 23:22:56,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:56,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:56,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-27 23:22:56,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-27 23:22:56,279 INFO L175 Difference]: Start difference. First operand has 440 places, 408 transitions, 6202 flow. Second operand 11 states and 140 transitions. [2024-06-27 23:22:56,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 423 transitions, 7139 flow [2024-06-27 23:22:57,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 423 transitions, 6978 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-27 23:22:57,918 INFO L231 Difference]: Finished difference. Result has 442 places, 409 transitions, 6195 flow [2024-06-27 23:22:57,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6041, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6195, PETRI_PLACES=442, PETRI_TRANSITIONS=409} [2024-06-27 23:22:57,918 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 411 predicate places. [2024-06-27 23:22:57,919 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 409 transitions, 6195 flow [2024-06-27 23:22:57,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:57,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:57,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:57,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 23:22:57,919 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)] === [2024-06-27 23:22:57,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:57,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1721207278, now seen corresponding path program 25 times [2024-06-27 23:22:57,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:57,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640622117] [2024-06-27 23:22:57,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:57,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:59,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:59,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:59,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640622117] [2024-06-27 23:22:59,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640622117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:59,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:59,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:59,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696765621] [2024-06-27 23:22:59,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:59,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:59,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:59,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:59,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:59,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:22:59,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 409 transitions, 6195 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:59,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:59,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:22:59,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:00,473 INFO L124 PetriNetUnfolderBase]: 725/1320 cut-off events. [2024-06-27 23:23:00,474 INFO L125 PetriNetUnfolderBase]: For 407472/407472 co-relation queries the response was YES. [2024-06-27 23:23:00,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15485 conditions, 1320 events. 725/1320 cut-off events. For 407472/407472 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7345 event pairs, 40 based on Foata normal form. 1/1319 useless extension candidates. Maximal degree in co-relation 15270. Up to 1137 conditions per place. [2024-06-27 23:23:00,495 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 376 selfloop transitions, 46 changer transitions 0/425 dead transitions. [2024-06-27 23:23:00,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 425 transitions, 7185 flow [2024-06-27 23:23:00,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:00,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:00,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 23:23:00,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-27 23:23:00,496 INFO L175 Difference]: Start difference. First operand has 442 places, 409 transitions, 6195 flow. Second operand 11 states and 142 transitions. [2024-06-27 23:23:00,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 425 transitions, 7185 flow [2024-06-27 23:23:02,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 425 transitions, 7006 flow, removed 45 selfloop flow, removed 10 redundant places. [2024-06-27 23:23:02,346 INFO L231 Difference]: Finished difference. Result has 443 places, 411 transitions, 6227 flow [2024-06-27 23:23:02,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6016, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6227, PETRI_PLACES=443, PETRI_TRANSITIONS=411} [2024-06-27 23:23:02,358 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 412 predicate places. [2024-06-27 23:23:02,358 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 411 transitions, 6227 flow [2024-06-27 23:23:02,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:02,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:02,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:02,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 23:23:02,358 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)] === [2024-06-27 23:23:02,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:02,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1721409088, now seen corresponding path program 26 times [2024-06-27 23:23:02,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:02,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978734721] [2024-06-27 23:23:02,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:02,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:04,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:04,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:04,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978734721] [2024-06-27 23:23:04,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978734721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:04,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:04,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:23:04,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748785413] [2024-06-27 23:23:04,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:04,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:23:04,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:04,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:23:04,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:23:04,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:23:04,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 411 transitions, 6227 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:04,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:04,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:23:04,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:04,753 INFO L124 PetriNetUnfolderBase]: 728/1327 cut-off events. [2024-06-27 23:23:04,753 INFO L125 PetriNetUnfolderBase]: For 413131/413131 co-relation queries the response was YES. [2024-06-27 23:23:04,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15561 conditions, 1327 events. 728/1327 cut-off events. For 413131/413131 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7415 event pairs, 40 based on Foata normal form. 1/1326 useless extension candidates. Maximal degree in co-relation 15346. Up to 1121 conditions per place. [2024-06-27 23:23:04,774 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 368 selfloop transitions, 56 changer transitions 0/427 dead transitions. [2024-06-27 23:23:04,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 427 transitions, 7225 flow [2024-06-27 23:23:04,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:04,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:04,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 23:23:04,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-27 23:23:04,776 INFO L175 Difference]: Start difference. First operand has 443 places, 411 transitions, 6227 flow. Second operand 11 states and 142 transitions. [2024-06-27 23:23:04,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 427 transitions, 7225 flow [2024-06-27 23:23:06,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 427 transitions, 7036 flow, removed 50 selfloop flow, removed 9 redundant places. [2024-06-27 23:23:06,524 INFO L231 Difference]: Finished difference. Result has 445 places, 413 transitions, 6273 flow [2024-06-27 23:23:06,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6038, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6273, PETRI_PLACES=445, PETRI_TRANSITIONS=413} [2024-06-27 23:23:06,525 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 414 predicate places. [2024-06-27 23:23:06,525 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 413 transitions, 6273 flow [2024-06-27 23:23:06,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:06,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:06,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:06,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 23:23:06,526 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)] === [2024-06-27 23:23:06,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:06,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1521540724, now seen corresponding path program 27 times [2024-06-27 23:23:06,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:06,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641194643] [2024-06-27 23:23:06,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:06,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:08,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:08,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:08,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641194643] [2024-06-27 23:23:08,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641194643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:08,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:08,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:23:08,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757679456] [2024-06-27 23:23:08,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:08,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:23:08,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:08,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:23:08,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:23:09,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:23:09,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 413 transitions, 6273 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:09,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:09,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:23:09,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:09,689 INFO L124 PetriNetUnfolderBase]: 731/1335 cut-off events. [2024-06-27 23:23:09,690 INFO L125 PetriNetUnfolderBase]: For 418662/418662 co-relation queries the response was YES. [2024-06-27 23:23:09,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15657 conditions, 1335 events. 731/1335 cut-off events. For 418662/418662 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7487 event pairs, 46 based on Foata normal form. 1/1334 useless extension candidates. Maximal degree in co-relation 15441. Up to 1104 conditions per place. [2024-06-27 23:23:09,711 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 359 selfloop transitions, 67 changer transitions 0/429 dead transitions. [2024-06-27 23:23:09,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 429 transitions, 7595 flow [2024-06-27 23:23:09,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:09,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:09,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 23:23:09,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-27 23:23:09,712 INFO L175 Difference]: Start difference. First operand has 445 places, 413 transitions, 6273 flow. Second operand 11 states and 141 transitions. [2024-06-27 23:23:09,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 429 transitions, 7595 flow [2024-06-27 23:23:11,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 429 transitions, 7382 flow, removed 52 selfloop flow, removed 9 redundant places. [2024-06-27 23:23:11,453 INFO L231 Difference]: Finished difference. Result has 447 places, 415 transitions, 6321 flow [2024-06-27 23:23:11,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6060, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6321, PETRI_PLACES=447, PETRI_TRANSITIONS=415} [2024-06-27 23:23:11,454 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 416 predicate places. [2024-06-27 23:23:11,454 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 415 transitions, 6321 flow [2024-06-27 23:23:11,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:11,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:11,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:11,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 23:23:11,455 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)] === [2024-06-27 23:23:11,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:11,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1521546304, now seen corresponding path program 28 times [2024-06-27 23:23:11,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:11,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990838894] [2024-06-27 23:23:11,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:11,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:13,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:13,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:13,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990838894] [2024-06-27 23:23:13,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990838894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:13,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:13,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:23:13,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560944162] [2024-06-27 23:23:13,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:13,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:23:13,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:13,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:23:13,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:23:13,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:23:13,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 415 transitions, 6321 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:13,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:13,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:23:13,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:13,771 INFO L124 PetriNetUnfolderBase]: 729/1332 cut-off events. [2024-06-27 23:23:13,771 INFO L125 PetriNetUnfolderBase]: For 409818/409818 co-relation queries the response was YES. [2024-06-27 23:23:13,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15412 conditions, 1332 events. 729/1332 cut-off events. For 409818/409818 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7458 event pairs, 46 based on Foata normal form. 1/1331 useless extension candidates. Maximal degree in co-relation 15195. Up to 1108 conditions per place. [2024-06-27 23:23:13,793 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 361 selfloop transitions, 64 changer transitions 0/428 dead transitions. [2024-06-27 23:23:13,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 428 transitions, 7203 flow [2024-06-27 23:23:13,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:13,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:13,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 23:23:13,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-27 23:23:13,795 INFO L175 Difference]: Start difference. First operand has 447 places, 415 transitions, 6321 flow. Second operand 11 states and 138 transitions. [2024-06-27 23:23:13,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 428 transitions, 7203 flow [2024-06-27 23:23:15,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 428 transitions, 6868 flow, removed 77 selfloop flow, removed 10 redundant places. [2024-06-27 23:23:15,455 INFO L231 Difference]: Finished difference. Result has 448 places, 415 transitions, 6119 flow [2024-06-27 23:23:15,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5986, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6119, PETRI_PLACES=448, PETRI_TRANSITIONS=415} [2024-06-27 23:23:15,455 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 417 predicate places. [2024-06-27 23:23:15,455 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 415 transitions, 6119 flow [2024-06-27 23:23:15,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:15,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:15,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:15,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 23:23:15,456 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)] === [2024-06-27 23:23:15,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:15,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1514189074, now seen corresponding path program 29 times [2024-06-27 23:23:15,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:15,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015757597] [2024-06-27 23:23:15,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:15,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:17,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:17,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:17,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015757597] [2024-06-27 23:23:17,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015757597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:17,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:17,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:23:17,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778532217] [2024-06-27 23:23:17,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:17,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:23:17,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:17,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:23:17,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:23:17,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:23:17,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 415 transitions, 6119 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:17,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:17,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:23:17,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:18,190 INFO L124 PetriNetUnfolderBase]: 732/1339 cut-off events. [2024-06-27 23:23:18,190 INFO L125 PetriNetUnfolderBase]: For 422179/422179 co-relation queries the response was YES. [2024-06-27 23:23:18,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15359 conditions, 1339 events. 732/1339 cut-off events. For 422179/422179 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7513 event pairs, 34 based on Foata normal form. 1/1338 useless extension candidates. Maximal degree in co-relation 15142. Up to 1047 conditions per place. [2024-06-27 23:23:18,212 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 334 selfloop transitions, 94 changer transitions 0/431 dead transitions. [2024-06-27 23:23:18,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 431 transitions, 7453 flow [2024-06-27 23:23:18,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:18,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:18,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 23:23:18,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-27 23:23:18,213 INFO L175 Difference]: Start difference. First operand has 448 places, 415 transitions, 6119 flow. Second operand 11 states and 142 transitions. [2024-06-27 23:23:18,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 431 transitions, 7453 flow [2024-06-27 23:23:19,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 431 transitions, 7318 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:23:20,043 INFO L231 Difference]: Finished difference. Result has 449 places, 417 transitions, 6299 flow [2024-06-27 23:23:20,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5984, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6299, PETRI_PLACES=449, PETRI_TRANSITIONS=417} [2024-06-27 23:23:20,043 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 418 predicate places. [2024-06-27 23:23:20,043 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 417 transitions, 6299 flow [2024-06-27 23:23:20,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:20,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:20,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:20,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 23:23:20,044 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)] === [2024-06-27 23:23:20,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:20,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1521338914, now seen corresponding path program 30 times [2024-06-27 23:23:20,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:20,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244258292] [2024-06-27 23:23:20,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:20,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:22,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:22,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:22,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244258292] [2024-06-27 23:23:22,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244258292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:22,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:22,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:23:22,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6595268] [2024-06-27 23:23:22,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:22,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:23:22,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:22,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:23:22,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:23:22,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:23:22,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 417 transitions, 6299 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:22,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:22,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:23:22,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:23,192 INFO L124 PetriNetUnfolderBase]: 730/1336 cut-off events. [2024-06-27 23:23:23,193 INFO L125 PetriNetUnfolderBase]: For 414428/414428 co-relation queries the response was YES. [2024-06-27 23:23:23,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15227 conditions, 1336 events. 730/1336 cut-off events. For 414428/414428 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7500 event pairs, 34 based on Foata normal form. 1/1335 useless extension candidates. Maximal degree in co-relation 15009. Up to 1095 conditions per place. [2024-06-27 23:23:23,212 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 356 selfloop transitions, 71 changer transitions 0/430 dead transitions. [2024-06-27 23:23:23,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 430 transitions, 7185 flow [2024-06-27 23:23:23,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:23,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:23,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 23:23:23,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-27 23:23:23,213 INFO L175 Difference]: Start difference. First operand has 449 places, 417 transitions, 6299 flow. Second operand 11 states and 142 transitions. [2024-06-27 23:23:23,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 430 transitions, 7185 flow [2024-06-27 23:23:25,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 430 transitions, 6623 flow, removed 91 selfloop flow, removed 11 redundant places. [2024-06-27 23:23:25,072 INFO L231 Difference]: Finished difference. Result has 449 places, 417 transitions, 5884 flow [2024-06-27 23:23:25,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5737, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5884, PETRI_PLACES=449, PETRI_TRANSITIONS=417} [2024-06-27 23:23:25,072 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 418 predicate places. [2024-06-27 23:23:25,072 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 417 transitions, 5884 flow [2024-06-27 23:23:25,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:25,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:25,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:25,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 23:23:25,073 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)] === [2024-06-27 23:23:25,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:25,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1678576319, now seen corresponding path program 1 times [2024-06-27 23:23:25,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:25,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696306229] [2024-06-27 23:23:25,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:25,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:26,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:26,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:26,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696306229] [2024-06-27 23:23:26,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696306229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:26,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:26,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:23:26,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377986544] [2024-06-27 23:23:26,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:26,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:23:26,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:26,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:23:26,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:23:26,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:23:26,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 417 transitions, 5884 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:26,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:26,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:23:26,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:27,365 INFO L124 PetriNetUnfolderBase]: 734/1343 cut-off events. [2024-06-27 23:23:27,366 INFO L125 PetriNetUnfolderBase]: For 429543/429543 co-relation queries the response was YES. [2024-06-27 23:23:27,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14821 conditions, 1343 events. 734/1343 cut-off events. For 429543/429543 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 7551 event pairs, 40 based on Foata normal form. 2/1339 useless extension candidates. Maximal degree in co-relation 14604. Up to 1172 conditions per place. [2024-06-27 23:23:27,387 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 394 selfloop transitions, 35 changer transitions 0/432 dead transitions. [2024-06-27 23:23:27,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 432 transitions, 6810 flow [2024-06-27 23:23:27,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:27,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:27,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 23:23:27,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:23:27,388 INFO L175 Difference]: Start difference. First operand has 449 places, 417 transitions, 5884 flow. Second operand 10 states and 128 transitions. [2024-06-27 23:23:27,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 432 transitions, 6810 flow [2024-06-27 23:23:29,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 432 transitions, 6525 flow, removed 21 selfloop flow, removed 12 redundant places. [2024-06-27 23:23:29,201 INFO L231 Difference]: Finished difference. Result has 447 places, 418 transitions, 5705 flow [2024-06-27 23:23:29,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5599, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5705, PETRI_PLACES=447, PETRI_TRANSITIONS=418} [2024-06-27 23:23:29,201 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 416 predicate places. [2024-06-27 23:23:29,201 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 418 transitions, 5705 flow [2024-06-27 23:23:29,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:29,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:29,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:29,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 23:23:29,202 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)] === [2024-06-27 23:23:29,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:29,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1681433279, now seen corresponding path program 2 times [2024-06-27 23:23:29,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:29,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658105559] [2024-06-27 23:23:29,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:29,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:30,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:30,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:30,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658105559] [2024-06-27 23:23:30,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658105559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:30,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:30,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:23:30,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204357751] [2024-06-27 23:23:30,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:30,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:23:30,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:30,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:23:30,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:23:30,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:23:30,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 418 transitions, 5705 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:30,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:30,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:23:30,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:31,148 INFO L124 PetriNetUnfolderBase]: 743/1362 cut-off events. [2024-06-27 23:23:31,148 INFO L125 PetriNetUnfolderBase]: For 426415/426415 co-relation queries the response was YES. [2024-06-27 23:23:31,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14729 conditions, 1362 events. 743/1362 cut-off events. For 426415/426415 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 7724 event pairs, 48 based on Foata normal form. 2/1358 useless extension candidates. Maximal degree in co-relation 14513. Up to 1182 conditions per place. [2024-06-27 23:23:31,167 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 399 selfloop transitions, 34 changer transitions 0/436 dead transitions. [2024-06-27 23:23:31,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 436 transitions, 6651 flow [2024-06-27 23:23:31,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:31,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:31,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 23:23:31,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-27 23:23:31,169 INFO L175 Difference]: Start difference. First operand has 447 places, 418 transitions, 5705 flow. Second operand 10 states and 129 transitions. [2024-06-27 23:23:31,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 436 transitions, 6651 flow [2024-06-27 23:23:33,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 436 transitions, 6555 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 23:23:33,066 INFO L231 Difference]: Finished difference. Result has 450 places, 420 transitions, 5723 flow [2024-06-27 23:23:33,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5609, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5723, PETRI_PLACES=450, PETRI_TRANSITIONS=420} [2024-06-27 23:23:33,066 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 419 predicate places. [2024-06-27 23:23:33,066 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 420 transitions, 5723 flow [2024-06-27 23:23:33,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:33,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:33,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:33,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 23:23:33,067 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)] === [2024-06-27 23:23:33,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:33,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1563285149, now seen corresponding path program 3 times [2024-06-27 23:23:33,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:33,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821016412] [2024-06-27 23:23:33,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:33,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:34,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:34,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:34,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821016412] [2024-06-27 23:23:34,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821016412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:34,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:34,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:23:34,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719243202] [2024-06-27 23:23:34,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:34,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:23:34,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:34,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:23:34,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:23:34,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:23:34,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 420 transitions, 5723 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:34,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:34,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:23:34,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:35,223 INFO L124 PetriNetUnfolderBase]: 747/1370 cut-off events. [2024-06-27 23:23:35,223 INFO L125 PetriNetUnfolderBase]: For 440221/440221 co-relation queries the response was YES. [2024-06-27 23:23:35,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14805 conditions, 1370 events. 747/1370 cut-off events. For 440221/440221 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 7802 event pairs, 40 based on Foata normal form. 2/1366 useless extension candidates. Maximal degree in co-relation 14587. Up to 1193 conditions per place. [2024-06-27 23:23:35,244 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 393 selfloop transitions, 38 changer transitions 0/434 dead transitions. [2024-06-27 23:23:35,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 434 transitions, 6653 flow [2024-06-27 23:23:35,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:35,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:35,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 23:23:35,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-27 23:23:35,246 INFO L175 Difference]: Start difference. First operand has 450 places, 420 transitions, 5723 flow. Second operand 10 states and 129 transitions. [2024-06-27 23:23:35,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 434 transitions, 6653 flow [2024-06-27 23:23:37,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 434 transitions, 6559 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 23:23:37,072 INFO L231 Difference]: Finished difference. Result has 453 places, 421 transitions, 5745 flow [2024-06-27 23:23:37,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5629, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5745, PETRI_PLACES=453, PETRI_TRANSITIONS=421} [2024-06-27 23:23:37,072 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 422 predicate places. [2024-06-27 23:23:37,072 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 421 transitions, 5745 flow [2024-06-27 23:23:37,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:37,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:37,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:37,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 23:23:37,073 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)] === [2024-06-27 23:23:37,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:37,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1563100699, now seen corresponding path program 1 times [2024-06-27 23:23:37,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:37,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706716034] [2024-06-27 23:23:37,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:37,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:39,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:39,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:39,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706716034] [2024-06-27 23:23:39,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706716034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:39,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:39,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:23:39,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762607834] [2024-06-27 23:23:39,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:39,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:23:39,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:39,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:23:39,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:23:39,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:23:39,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 421 transitions, 5745 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) [2024-06-27 23:23:39,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:39,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:23:39,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:39,974 INFO L124 PetriNetUnfolderBase]: 768/1409 cut-off events. [2024-06-27 23:23:39,974 INFO L125 PetriNetUnfolderBase]: For 487610/487610 co-relation queries the response was YES. [2024-06-27 23:23:39,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15726 conditions, 1409 events. 768/1409 cut-off events. For 487610/487610 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8062 event pairs, 35 based on Foata normal form. 2/1409 useless extension candidates. Maximal degree in co-relation 15508. Up to 1093 conditions per place. [2024-06-27 23:23:39,995 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 355 selfloop transitions, 88 changer transitions 0/447 dead transitions. [2024-06-27 23:23:39,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 447 transitions, 7248 flow [2024-06-27 23:23:39,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:39,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:39,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-27 23:23:39,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478125 [2024-06-27 23:23:39,997 INFO L175 Difference]: Start difference. First operand has 453 places, 421 transitions, 5745 flow. Second operand 10 states and 153 transitions. [2024-06-27 23:23:39,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 447 transitions, 7248 flow [2024-06-27 23:23:42,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 447 transitions, 7142 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 23:23:42,112 INFO L231 Difference]: Finished difference. Result has 456 places, 427 transitions, 6019 flow [2024-06-27 23:23:42,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5639, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6019, PETRI_PLACES=456, PETRI_TRANSITIONS=427} [2024-06-27 23:23:42,113 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 425 predicate places. [2024-06-27 23:23:42,113 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 427 transitions, 6019 flow [2024-06-27 23:23:42,113 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) [2024-06-27 23:23:42,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:42,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:42,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 23:23:42,117 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)] === [2024-06-27 23:23:42,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:42,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1563280189, now seen corresponding path program 2 times [2024-06-27 23:23:42,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:42,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062790870] [2024-06-27 23:23:42,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:42,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:43,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:43,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:43,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062790870] [2024-06-27 23:23:43,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062790870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:43,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:43,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:43,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632782851] [2024-06-27 23:23:43,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:43,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:43,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:43,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:43,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:43,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:23:43,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 427 transitions, 6019 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) [2024-06-27 23:23:43,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:43,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:23:43,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:44,695 INFO L124 PetriNetUnfolderBase]: 769/1411 cut-off events. [2024-06-27 23:23:44,695 INFO L125 PetriNetUnfolderBase]: For 478988/478988 co-relation queries the response was YES. [2024-06-27 23:23:44,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15757 conditions, 1411 events. 769/1411 cut-off events. For 478988/478988 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8093 event pairs, 36 based on Foata normal form. 2/1411 useless extension candidates. Maximal degree in co-relation 15537. Up to 1181 conditions per place. [2024-06-27 23:23:44,714 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 375 selfloop transitions, 68 changer transitions 0/446 dead transitions. [2024-06-27 23:23:44,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 446 transitions, 7035 flow [2024-06-27 23:23:44,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:44,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:44,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-27 23:23:44,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 23:23:44,715 INFO L175 Difference]: Start difference. First operand has 456 places, 427 transitions, 6019 flow. Second operand 10 states and 140 transitions. [2024-06-27 23:23:44,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 446 transitions, 7035 flow [2024-06-27 23:23:46,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 446 transitions, 6807 flow, removed 60 selfloop flow, removed 6 redundant places. [2024-06-27 23:23:46,826 INFO L231 Difference]: Finished difference. Result has 460 places, 429 transitions, 6002 flow [2024-06-27 23:23:46,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5811, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6002, PETRI_PLACES=460, PETRI_TRANSITIONS=429} [2024-06-27 23:23:46,832 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 429 predicate places. [2024-06-27 23:23:46,833 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 429 transitions, 6002 flow [2024-06-27 23:23:46,833 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) [2024-06-27 23:23:46,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:46,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:46,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 23:23:46,833 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)] === [2024-06-27 23:23:46,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:46,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1563107209, now seen corresponding path program 3 times [2024-06-27 23:23:46,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:46,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213911998] [2024-06-27 23:23:46,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:46,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:49,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:49,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:49,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213911998] [2024-06-27 23:23:49,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213911998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:49,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:49,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:49,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040126505] [2024-06-27 23:23:49,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:49,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:49,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:49,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:49,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:49,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:23:49,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 429 transitions, 6002 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) [2024-06-27 23:23:49,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:49,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:23:49,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:50,312 INFO L124 PetriNetUnfolderBase]: 767/1408 cut-off events. [2024-06-27 23:23:50,312 INFO L125 PetriNetUnfolderBase]: For 457006/457006 co-relation queries the response was YES. [2024-06-27 23:23:50,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15500 conditions, 1408 events. 767/1408 cut-off events. For 457006/457006 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8040 event pairs, 34 based on Foata normal form. 1/1407 useless extension candidates. Maximal degree in co-relation 15278. Up to 1113 conditions per place. [2024-06-27 23:23:50,334 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 364 selfloop transitions, 83 changer transitions 0/450 dead transitions. [2024-06-27 23:23:50,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 450 transitions, 7045 flow [2024-06-27 23:23:50,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:50,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:50,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-27 23:23:50,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-27 23:23:50,335 INFO L175 Difference]: Start difference. First operand has 460 places, 429 transitions, 6002 flow. Second operand 11 states and 150 transitions. [2024-06-27 23:23:50,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 450 transitions, 7045 flow [2024-06-27 23:23:52,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 450 transitions, 6870 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 23:23:52,339 INFO L231 Difference]: Finished difference. Result has 465 places, 434 transitions, 6165 flow [2024-06-27 23:23:52,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5827, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6165, PETRI_PLACES=465, PETRI_TRANSITIONS=434} [2024-06-27 23:23:52,340 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 434 predicate places. [2024-06-27 23:23:52,340 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 434 transitions, 6165 flow [2024-06-27 23:23:52,340 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) [2024-06-27 23:23:52,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:52,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:52,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 23:23:52,341 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)] === [2024-06-27 23:23:52,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:52,342 INFO L85 PathProgramCache]: Analyzing trace with hash -820037369, now seen corresponding path program 4 times [2024-06-27 23:23:52,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:52,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707434066] [2024-06-27 23:23:52,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:52,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:53,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:53,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:53,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707434066] [2024-06-27 23:23:53,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707434066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:53,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:53,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:23:53,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410320477] [2024-06-27 23:23:53,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:53,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:23:53,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:53,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:23:53,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:23:53,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:23:53,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 434 transitions, 6165 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:53,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:53,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:23:53,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:54,416 INFO L124 PetriNetUnfolderBase]: 771/1417 cut-off events. [2024-06-27 23:23:54,417 INFO L125 PetriNetUnfolderBase]: For 477491/477491 co-relation queries the response was YES. [2024-06-27 23:23:54,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15693 conditions, 1417 events. 771/1417 cut-off events. For 477491/477491 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8154 event pairs, 39 based on Foata normal form. 2/1413 useless extension candidates. Maximal degree in co-relation 15467. Up to 1225 conditions per place. [2024-06-27 23:23:54,439 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 402 selfloop transitions, 42 changer transitions 0/447 dead transitions. [2024-06-27 23:23:54,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 447 transitions, 7119 flow [2024-06-27 23:23:54,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:54,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:54,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-27 23:23:54,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 23:23:54,440 INFO L175 Difference]: Start difference. First operand has 465 places, 434 transitions, 6165 flow. Second operand 10 states and 130 transitions. [2024-06-27 23:23:54,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 447 transitions, 7119 flow [2024-06-27 23:23:56,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 447 transitions, 6926 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-27 23:23:56,504 INFO L231 Difference]: Finished difference. Result has 468 places, 435 transitions, 6098 flow [2024-06-27 23:23:56,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5972, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6098, PETRI_PLACES=468, PETRI_TRANSITIONS=435} [2024-06-27 23:23:56,506 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 437 predicate places. [2024-06-27 23:23:56,506 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 435 transitions, 6098 flow [2024-06-27 23:23:56,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:56,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:56,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:56,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 23:23:56,506 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)] === [2024-06-27 23:23:56,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:56,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1390965887, now seen corresponding path program 1 times [2024-06-27 23:23:56,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:56,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323250283] [2024-06-27 23:23:56,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:56,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:59,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:59,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:59,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323250283] [2024-06-27 23:23:59,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323250283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:59,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:59,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:59,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376808600] [2024-06-27 23:23:59,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:59,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:59,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:59,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:59,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:59,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:23:59,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 435 transitions, 6098 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) [2024-06-27 23:23:59,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:59,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:23:59,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:00,007 INFO L124 PetriNetUnfolderBase]: 775/1425 cut-off events. [2024-06-27 23:24:00,007 INFO L125 PetriNetUnfolderBase]: For 477426/477426 co-relation queries the response was YES. [2024-06-27 23:24:00,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15664 conditions, 1425 events. 775/1425 cut-off events. For 477426/477426 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8224 event pairs, 60 based on Foata normal form. 2/1425 useless extension candidates. Maximal degree in co-relation 15437. Up to 1270 conditions per place. [2024-06-27 23:24:00,028 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 415 selfloop transitions, 33 changer transitions 0/451 dead transitions. [2024-06-27 23:24:00,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 451 transitions, 7058 flow [2024-06-27 23:24:00,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:24:00,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:24:00,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-27 23:24:00,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-27 23:24:00,030 INFO L175 Difference]: Start difference. First operand has 468 places, 435 transitions, 6098 flow. Second operand 10 states and 134 transitions. [2024-06-27 23:24:00,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 451 transitions, 7058 flow [2024-06-27 23:24:01,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 451 transitions, 6942 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 23:24:01,946 INFO L231 Difference]: Finished difference. Result has 470 places, 436 transitions, 6082 flow [2024-06-27 23:24:01,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5982, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6082, PETRI_PLACES=470, PETRI_TRANSITIONS=436} [2024-06-27 23:24:01,946 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 439 predicate places. [2024-06-27 23:24:01,946 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 436 transitions, 6082 flow [2024-06-27 23:24:01,947 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) [2024-06-27 23:24:01,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:01,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:01,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 23:24:01,947 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)] === [2024-06-27 23:24:01,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:01,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1390974815, now seen corresponding path program 4 times [2024-06-27 23:24:01,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:01,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728628428] [2024-06-27 23:24:01,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:01,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:04,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:04,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:04,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728628428] [2024-06-27 23:24:04,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728628428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:04,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:04,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:24:04,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960551865] [2024-06-27 23:24:04,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:04,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:24:04,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:04,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:24:04,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:24:04,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:24:04,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 436 transitions, 6082 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:04,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:04,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:24:04,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:05,484 INFO L124 PetriNetUnfolderBase]: 783/1438 cut-off events. [2024-06-27 23:24:05,485 INFO L125 PetriNetUnfolderBase]: For 488521/488521 co-relation queries the response was YES. [2024-06-27 23:24:05,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15974 conditions, 1438 events. 783/1438 cut-off events. For 488521/488521 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 8286 event pairs, 30 based on Foata normal form. 1/1437 useless extension candidates. Maximal degree in co-relation 15747. Up to 1008 conditions per place. [2024-06-27 23:24:05,505 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 320 selfloop transitions, 133 changer transitions 0/456 dead transitions. [2024-06-27 23:24:05,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 456 transitions, 7521 flow [2024-06-27 23:24:05,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:24:05,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:24:05,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-27 23:24:05,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-27 23:24:05,507 INFO L175 Difference]: Start difference. First operand has 470 places, 436 transitions, 6082 flow. Second operand 11 states and 151 transitions. [2024-06-27 23:24:05,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 456 transitions, 7521 flow [2024-06-27 23:24:07,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 456 transitions, 7431 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 23:24:07,728 INFO L231 Difference]: Finished difference. Result has 473 places, 441 transitions, 6422 flow [2024-06-27 23:24:07,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5992, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6422, PETRI_PLACES=473, PETRI_TRANSITIONS=441} [2024-06-27 23:24:07,728 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 442 predicate places. [2024-06-27 23:24:07,729 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 441 transitions, 6422 flow [2024-06-27 23:24:07,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:07,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:07,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:07,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 23:24:07,729 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)] === [2024-06-27 23:24:07,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:07,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1391211965, now seen corresponding path program 5 times [2024-06-27 23:24:07,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:07,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149446023] [2024-06-27 23:24:07,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:07,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:09,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:09,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:09,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149446023] [2024-06-27 23:24:09,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149446023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:09,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:09,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:09,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179559443] [2024-06-27 23:24:09,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:09,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:09,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:09,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:09,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:09,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:24:09,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 441 transitions, 6422 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) [2024-06-27 23:24:09,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:09,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:24:09,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:10,586 INFO L124 PetriNetUnfolderBase]: 791/1455 cut-off events. [2024-06-27 23:24:10,586 INFO L125 PetriNetUnfolderBase]: For 510270/510270 co-relation queries the response was YES. [2024-06-27 23:24:10,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16557 conditions, 1455 events. 791/1455 cut-off events. For 510270/510270 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 8446 event pairs, 30 based on Foata normal form. 1/1454 useless extension candidates. Maximal degree in co-relation 16328. Up to 1018 conditions per place. [2024-06-27 23:24:10,608 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 341 selfloop transitions, 117 changer transitions 0/461 dead transitions. [2024-06-27 23:24:10,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 461 transitions, 8200 flow [2024-06-27 23:24:10,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:24:10,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:24:10,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 153 transitions. [2024-06-27 23:24:10,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-27 23:24:10,610 INFO L175 Difference]: Start difference. First operand has 473 places, 441 transitions, 6422 flow. Second operand 11 states and 153 transitions. [2024-06-27 23:24:10,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 461 transitions, 8200 flow [2024-06-27 23:24:13,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 461 transitions, 7698 flow, removed 70 selfloop flow, removed 9 redundant places. [2024-06-27 23:24:13,074 INFO L231 Difference]: Finished difference. Result has 475 places, 445 transitions, 6297 flow [2024-06-27 23:24:13,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5952, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6297, PETRI_PLACES=475, PETRI_TRANSITIONS=445} [2024-06-27 23:24:13,075 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 444 predicate places. [2024-06-27 23:24:13,075 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 445 transitions, 6297 flow [2024-06-27 23:24:13,075 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) [2024-06-27 23:24:13,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:13,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:13,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 23:24:13,076 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)] === [2024-06-27 23:24:13,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:13,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1391205455, now seen corresponding path program 6 times [2024-06-27 23:24:13,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:13,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018704244] [2024-06-27 23:24:13,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:13,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:13,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:15,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:15,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:15,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018704244] [2024-06-27 23:24:15,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018704244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:15,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:15,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:15,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922554107] [2024-06-27 23:24:15,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:15,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:15,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:15,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:15,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:15,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:24:15,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 445 transitions, 6297 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) [2024-06-27 23:24:15,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:15,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:24:15,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:16,060 INFO L124 PetriNetUnfolderBase]: 807/1483 cut-off events. [2024-06-27 23:24:16,061 INFO L125 PetriNetUnfolderBase]: For 550942/550942 co-relation queries the response was YES. [2024-06-27 23:24:16,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16938 conditions, 1483 events. 807/1483 cut-off events. For 550942/550942 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 8634 event pairs, 42 based on Foata normal form. 2/1483 useless extension candidates. Maximal degree in co-relation 16710. Up to 986 conditions per place. [2024-06-27 23:24:16,082 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 342 selfloop transitions, 125 changer transitions 0/470 dead transitions. [2024-06-27 23:24:16,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 470 transitions, 8557 flow [2024-06-27 23:24:16,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:24:16,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:24:16,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-27 23:24:16,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471875 [2024-06-27 23:24:16,084 INFO L175 Difference]: Start difference. First operand has 475 places, 445 transitions, 6297 flow. Second operand 10 states and 151 transitions. [2024-06-27 23:24:16,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 470 transitions, 8557 flow [2024-06-27 23:24:18,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 470 transitions, 8134 flow, removed 69 selfloop flow, removed 9 redundant places. [2024-06-27 23:24:18,413 INFO L231 Difference]: Finished difference. Result has 476 places, 453 transitions, 6384 flow [2024-06-27 23:24:18,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5898, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6384, PETRI_PLACES=476, PETRI_TRANSITIONS=453} [2024-06-27 23:24:18,414 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 445 predicate places. [2024-06-27 23:24:18,414 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 453 transitions, 6384 flow [2024-06-27 23:24:18,414 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) [2024-06-27 23:24:18,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:18,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:18,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 23:24:18,415 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)] === [2024-06-27 23:24:18,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:18,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1397461565, now seen corresponding path program 7 times [2024-06-27 23:24:18,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:18,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321537278] [2024-06-27 23:24:18,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:18,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:20,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:20,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:20,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321537278] [2024-06-27 23:24:20,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321537278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:20,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:20,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:24:20,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702564188] [2024-06-27 23:24:20,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:20,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:24:20,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:20,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:24:20,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:24:20,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:24:20,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 453 transitions, 6384 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:20,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:20,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:24:20,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:21,433 INFO L124 PetriNetUnfolderBase]: 814/1502 cut-off events. [2024-06-27 23:24:21,434 INFO L125 PetriNetUnfolderBase]: For 557600/557600 co-relation queries the response was YES. [2024-06-27 23:24:21,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16826 conditions, 1502 events. 814/1502 cut-off events. For 557600/557600 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8830 event pairs, 46 based on Foata normal form. 2/1502 useless extension candidates. Maximal degree in co-relation 16601. Up to 1184 conditions per place. [2024-06-27 23:24:21,457 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 378 selfloop transitions, 91 changer transitions 0/472 dead transitions. [2024-06-27 23:24:21,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 472 transitions, 7822 flow [2024-06-27 23:24:21,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:24:21,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:24:21,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-27 23:24:21,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-27 23:24:21,458 INFO L175 Difference]: Start difference. First operand has 476 places, 453 transitions, 6384 flow. Second operand 11 states and 152 transitions. [2024-06-27 23:24:21,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 472 transitions, 7822 flow [2024-06-27 23:24:23,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 472 transitions, 7632 flow, removed 56 selfloop flow, removed 4 redundant places. [2024-06-27 23:24:23,807 INFO L231 Difference]: Finished difference. Result has 483 places, 457 transitions, 6502 flow [2024-06-27 23:24:23,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6204, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6502, PETRI_PLACES=483, PETRI_TRANSITIONS=457} [2024-06-27 23:24:23,808 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 452 predicate places. [2024-06-27 23:24:23,808 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 457 transitions, 6502 flow [2024-06-27 23:24:23,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:23,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:23,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:23,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 23:24:23,809 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)] === [2024-06-27 23:24:23,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:23,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1397641055, now seen corresponding path program 8 times [2024-06-27 23:24:23,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:23,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170321224] [2024-06-27 23:24:23,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:23,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:25,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:25,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:25,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170321224] [2024-06-27 23:24:25,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170321224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:25,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:25,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:25,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091206045] [2024-06-27 23:24:25,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:25,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:25,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:25,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:25,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:25,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:24:25,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 457 transitions, 6502 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) [2024-06-27 23:24:25,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:25,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:24:25,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:26,700 INFO L124 PetriNetUnfolderBase]: 815/1504 cut-off events. [2024-06-27 23:24:26,700 INFO L125 PetriNetUnfolderBase]: For 553623/553623 co-relation queries the response was YES. [2024-06-27 23:24:26,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16726 conditions, 1504 events. 815/1504 cut-off events. For 553623/553623 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8861 event pairs, 36 based on Foata normal form. 2/1504 useless extension candidates. Maximal degree in co-relation 16498. Up to 1238 conditions per place. [2024-06-27 23:24:26,719 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 394 selfloop transitions, 76 changer transitions 0/473 dead transitions. [2024-06-27 23:24:26,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 473 transitions, 7530 flow [2024-06-27 23:24:26,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:24:26,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:24:26,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-27 23:24:26,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-27 23:24:26,721 INFO L175 Difference]: Start difference. First operand has 483 places, 457 transitions, 6502 flow. Second operand 10 states and 139 transitions. [2024-06-27 23:24:26,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 473 transitions, 7530 flow [2024-06-27 23:24:29,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 473 transitions, 7125 flow, removed 53 selfloop flow, removed 11 redundant places. [2024-06-27 23:24:29,300 INFO L231 Difference]: Finished difference. Result has 482 places, 459 transitions, 6315 flow [2024-06-27 23:24:29,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6109, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6315, PETRI_PLACES=482, PETRI_TRANSITIONS=459} [2024-06-27 23:24:29,301 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 451 predicate places. [2024-06-27 23:24:29,301 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 459 transitions, 6315 flow [2024-06-27 23:24:29,301 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) [2024-06-27 23:24:29,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:29,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:29,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 23:24:29,301 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)] === [2024-06-27 23:24:29,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:29,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1397461317, now seen corresponding path program 1 times [2024-06-27 23:24:29,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:29,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442008073] [2024-06-27 23:24:29,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:29,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:31,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:31,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:31,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442008073] [2024-06-27 23:24:31,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442008073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:31,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:31,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:31,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770027689] [2024-06-27 23:24:31,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:31,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:31,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:31,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:31,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:31,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:24:31,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 459 transitions, 6315 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) [2024-06-27 23:24:31,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:31,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:24:31,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:32,238 INFO L124 PetriNetUnfolderBase]: 812/1494 cut-off events. [2024-06-27 23:24:32,238 INFO L125 PetriNetUnfolderBase]: For 530113/530113 co-relation queries the response was YES. [2024-06-27 23:24:32,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16236 conditions, 1494 events. 812/1494 cut-off events. For 530113/530113 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8753 event pairs, 38 based on Foata normal form. 1/1489 useless extension candidates. Maximal degree in co-relation 16010. Up to 1254 conditions per place. [2024-06-27 23:24:32,261 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 403 selfloop transitions, 67 changer transitions 0/473 dead transitions. [2024-06-27 23:24:32,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 473 transitions, 7289 flow [2024-06-27 23:24:32,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:24:32,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:24:32,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-27 23:24:32,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-27 23:24:32,265 INFO L175 Difference]: Start difference. First operand has 482 places, 459 transitions, 6315 flow. Second operand 10 states and 138 transitions. [2024-06-27 23:24:32,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 473 transitions, 7289 flow [2024-06-27 23:24:34,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 473 transitions, 7073 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-27 23:24:34,719 INFO L231 Difference]: Finished difference. Result has 484 places, 459 transitions, 6238 flow [2024-06-27 23:24:34,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6099, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6238, PETRI_PLACES=484, PETRI_TRANSITIONS=459} [2024-06-27 23:24:34,719 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 453 predicate places. [2024-06-27 23:24:34,719 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 459 transitions, 6238 flow [2024-06-27 23:24:34,719 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) [2024-06-27 23:24:34,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:34,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:34,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 23:24:34,720 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)] === [2024-06-27 23:24:34,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:34,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1656732057, now seen corresponding path program 9 times [2024-06-27 23:24:34,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:34,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049918075] [2024-06-27 23:24:34,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:34,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:36,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:36,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:36,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049918075] [2024-06-27 23:24:36,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049918075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:36,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:36,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:24:36,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737012728] [2024-06-27 23:24:36,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:36,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:24:36,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:36,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:24:36,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:24:36,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:24:36,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 459 transitions, 6238 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) [2024-06-27 23:24:36,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:36,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:24:36,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:37,425 INFO L124 PetriNetUnfolderBase]: 810/1495 cut-off events. [2024-06-27 23:24:37,425 INFO L125 PetriNetUnfolderBase]: For 519888/519888 co-relation queries the response was YES. [2024-06-27 23:24:37,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15987 conditions, 1495 events. 810/1495 cut-off events. For 519888/519888 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8779 event pairs, 35 based on Foata normal form. 1/1494 useless extension candidates. Maximal degree in co-relation 15761. Up to 1183 conditions per place. [2024-06-27 23:24:37,450 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 380 selfloop transitions, 90 changer transitions 0/474 dead transitions. [2024-06-27 23:24:37,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 474 transitions, 7568 flow [2024-06-27 23:24:37,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:24:37,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:24:37,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-27 23:24:37,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48125 [2024-06-27 23:24:37,452 INFO L175 Difference]: Start difference. First operand has 484 places, 459 transitions, 6238 flow. Second operand 10 states and 154 transitions. [2024-06-27 23:24:37,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 474 transitions, 7568 flow [2024-06-27 23:24:39,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 474 transitions, 7328 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-27 23:24:39,859 INFO L231 Difference]: Finished difference. Result has 484 places, 459 transitions, 6185 flow [2024-06-27 23:24:39,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5998, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6185, PETRI_PLACES=484, PETRI_TRANSITIONS=459} [2024-06-27 23:24:39,859 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 453 predicate places. [2024-06-27 23:24:39,859 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 459 transitions, 6185 flow [2024-06-27 23:24:39,860 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) [2024-06-27 23:24:39,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:39,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:39,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 23:24:39,860 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)] === [2024-06-27 23:24:39,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:39,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1156381027, now seen corresponding path program 5 times [2024-06-27 23:24:39,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:39,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385316160] [2024-06-27 23:24:39,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:39,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:41,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:41,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:41,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385316160] [2024-06-27 23:24:41,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385316160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:41,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:41,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:24:41,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536207017] [2024-06-27 23:24:41,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:41,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:24:41,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:41,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:24:41,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:24:41,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:24:41,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 459 transitions, 6185 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:41,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:41,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:24:41,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:42,579 INFO L124 PetriNetUnfolderBase]: 814/1503 cut-off events. [2024-06-27 23:24:42,579 INFO L125 PetriNetUnfolderBase]: For 540868/540868 co-relation queries the response was YES. [2024-06-27 23:24:42,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16057 conditions, 1503 events. 814/1503 cut-off events. For 540868/540868 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 8839 event pairs, 40 based on Foata normal form. 2/1499 useless extension candidates. Maximal degree in co-relation 15829. Up to 1287 conditions per place. [2024-06-27 23:24:42,604 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 421 selfloop transitions, 47 changer transitions 0/471 dead transitions. [2024-06-27 23:24:42,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 471 transitions, 7185 flow [2024-06-27 23:24:42,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:24:42,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:24:42,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-27 23:24:42,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-27 23:24:42,605 INFO L175 Difference]: Start difference. First operand has 484 places, 459 transitions, 6185 flow. Second operand 10 states and 131 transitions. [2024-06-27 23:24:42,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 471 transitions, 7185 flow [2024-06-27 23:24:45,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 471 transitions, 7014 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 23:24:45,007 INFO L231 Difference]: Finished difference. Result has 487 places, 460 transitions, 6152 flow [2024-06-27 23:24:45,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6014, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6152, PETRI_PLACES=487, PETRI_TRANSITIONS=460} [2024-06-27 23:24:45,008 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 456 predicate places. [2024-06-27 23:24:45,008 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 460 transitions, 6152 flow [2024-06-27 23:24:45,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:45,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:45,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:45,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 23:24:45,009 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)] === [2024-06-27 23:24:45,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:45,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1162821835, now seen corresponding path program 2 times [2024-06-27 23:24:45,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:45,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044098558] [2024-06-27 23:24:45,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:45,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:47,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:47,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:47,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044098558] [2024-06-27 23:24:47,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044098558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:47,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:47,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:47,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631405974] [2024-06-27 23:24:47,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:47,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:47,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:47,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:47,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:47,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:24:47,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 460 transitions, 6152 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) [2024-06-27 23:24:47,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:47,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:24:47,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:48,282 INFO L124 PetriNetUnfolderBase]: 817/1508 cut-off events. [2024-06-27 23:24:48,282 INFO L125 PetriNetUnfolderBase]: For 531878/531878 co-relation queries the response was YES. [2024-06-27 23:24:48,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16070 conditions, 1508 events. 817/1508 cut-off events. For 531878/531878 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 8876 event pairs, 35 based on Foata normal form. 1/1507 useless extension candidates. Maximal degree in co-relation 15840. Up to 1226 conditions per place. [2024-06-27 23:24:48,306 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 392 selfloop transitions, 79 changer transitions 0/474 dead transitions. [2024-06-27 23:24:48,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 474 transitions, 7172 flow [2024-06-27 23:24:48,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:24:48,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:24:48,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-27 23:24:48,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.440625 [2024-06-27 23:24:48,308 INFO L175 Difference]: Start difference. First operand has 487 places, 460 transitions, 6152 flow. Second operand 10 states and 141 transitions. [2024-06-27 23:24:48,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 474 transitions, 7172 flow [2024-06-27 23:24:50,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 474 transitions, 7044 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 23:24:50,720 INFO L231 Difference]: Finished difference. Result has 489 places, 462 transitions, 6241 flow [2024-06-27 23:24:50,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6024, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6241, PETRI_PLACES=489, PETRI_TRANSITIONS=462} [2024-06-27 23:24:50,721 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 458 predicate places. [2024-06-27 23:24:50,721 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 462 transitions, 6241 flow [2024-06-27 23:24:50,721 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) [2024-06-27 23:24:50,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:50,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:50,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 23:24:50,722 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)] === [2024-06-27 23:24:50,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:50,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1162821587, now seen corresponding path program 10 times [2024-06-27 23:24:50,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:50,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973206205] [2024-06-27 23:24:50,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:50,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:53,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:53,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:53,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973206205] [2024-06-27 23:24:53,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973206205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:53,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:53,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:24:53,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812788385] [2024-06-27 23:24:53,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:53,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:24:53,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:53,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:24:53,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:24:53,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:24:53,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 462 transitions, 6241 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:53,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:53,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:24:53,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:54,136 INFO L124 PetriNetUnfolderBase]: 853/1572 cut-off events. [2024-06-27 23:24:54,136 INFO L125 PetriNetUnfolderBase]: For 640927/640927 co-relation queries the response was YES. [2024-06-27 23:24:54,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17918 conditions, 1572 events. 853/1572 cut-off events. For 640927/640927 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9325 event pairs, 49 based on Foata normal form. 2/1572 useless extension candidates. Maximal degree in co-relation 17688. Up to 1170 conditions per place. [2024-06-27 23:24:54,162 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 383 selfloop transitions, 103 changer transitions 0/489 dead transitions. [2024-06-27 23:24:54,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 489 transitions, 8663 flow [2024-06-27 23:24:54,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:24:54,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:24:54,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-27 23:24:54,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 23:24:54,164 INFO L175 Difference]: Start difference. First operand has 489 places, 462 transitions, 6241 flow. Second operand 11 states and 160 transitions. [2024-06-27 23:24:54,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 489 transitions, 8663 flow [2024-06-27 23:24:56,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 489 transitions, 8474 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 23:24:57,003 INFO L231 Difference]: Finished difference. Result has 492 places, 471 transitions, 6523 flow [2024-06-27 23:24:57,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6052, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6523, PETRI_PLACES=492, PETRI_TRANSITIONS=471} [2024-06-27 23:24:57,004 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 461 predicate places. [2024-06-27 23:24:57,004 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 471 transitions, 6523 flow [2024-06-27 23:24:57,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:57,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:57,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:57,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 23:24:57,005 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)] === [2024-06-27 23:24:57,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:57,005 INFO L85 PathProgramCache]: Analyzing trace with hash 897122005, now seen corresponding path program 11 times [2024-06-27 23:24:57,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:57,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765719466] [2024-06-27 23:24:57,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:57,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:58,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:58,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:58,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765719466] [2024-06-27 23:24:58,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765719466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:58,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:58,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:24:58,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477397112] [2024-06-27 23:24:58,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:58,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:24:58,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:58,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:24:58,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:24:59,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:24:59,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 471 transitions, 6523 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:59,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:59,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:24:59,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:59,784 INFO L124 PetriNetUnfolderBase]: 851/1569 cut-off events. [2024-06-27 23:24:59,784 INFO L125 PetriNetUnfolderBase]: For 617240/617240 co-relation queries the response was YES. [2024-06-27 23:24:59,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17825 conditions, 1569 events. 851/1569 cut-off events. For 617240/617240 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9281 event pairs, 47 based on Foata normal form. 1/1568 useless extension candidates. Maximal degree in co-relation 17593. Up to 1282 conditions per place. [2024-06-27 23:24:59,810 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 399 selfloop transitions, 81 changer transitions 0/483 dead transitions. [2024-06-27 23:24:59,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 483 transitions, 7511 flow [2024-06-27 23:24:59,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:24:59,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:24:59,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-27 23:24:59,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-27 23:24:59,812 INFO L175 Difference]: Start difference. First operand has 492 places, 471 transitions, 6523 flow. Second operand 11 states and 145 transitions. [2024-06-27 23:24:59,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 483 transitions, 7511 flow [2024-06-27 23:25:02,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 483 transitions, 7275 flow, removed 73 selfloop flow, removed 5 redundant places. [2024-06-27 23:25:02,720 INFO L231 Difference]: Finished difference. Result has 498 places, 471 transitions, 6455 flow [2024-06-27 23:25:02,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6287, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6455, PETRI_PLACES=498, PETRI_TRANSITIONS=471} [2024-06-27 23:25:02,721 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 467 predicate places. [2024-06-27 23:25:02,721 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 471 transitions, 6455 flow [2024-06-27 23:25:02,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:02,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:02,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:02,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 23:25:02,721 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)] === [2024-06-27 23:25:02,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:02,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1873855707, now seen corresponding path program 12 times [2024-06-27 23:25:02,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:02,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529278735] [2024-06-27 23:25:02,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:02,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:04,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:04,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:04,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529278735] [2024-06-27 23:25:04,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529278735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:04,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:04,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:04,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380838831] [2024-06-27 23:25:04,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:04,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:04,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:04,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:04,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:04,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:25:04,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 471 transitions, 6455 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) [2024-06-27 23:25:04,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:04,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:25:04,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:05,710 INFO L124 PetriNetUnfolderBase]: 859/1587 cut-off events. [2024-06-27 23:25:05,710 INFO L125 PetriNetUnfolderBase]: For 645871/645871 co-relation queries the response was YES. [2024-06-27 23:25:05,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18093 conditions, 1587 events. 859/1587 cut-off events. For 645871/645871 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9433 event pairs, 36 based on Foata normal form. 1/1586 useless extension candidates. Maximal degree in co-relation 17859. Up to 1249 conditions per place. [2024-06-27 23:25:05,737 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 393 selfloop transitions, 94 changer transitions 0/490 dead transitions. [2024-06-27 23:25:05,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 490 transitions, 8329 flow [2024-06-27 23:25:05,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:05,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:05,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 153 transitions. [2024-06-27 23:25:05,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-27 23:25:05,739 INFO L175 Difference]: Start difference. First operand has 498 places, 471 transitions, 6455 flow. Second operand 11 states and 153 transitions. [2024-06-27 23:25:05,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 490 transitions, 8329 flow [2024-06-27 23:25:09,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 490 transitions, 8147 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 23:25:09,193 INFO L231 Difference]: Finished difference. Result has 499 places, 476 transitions, 6609 flow [2024-06-27 23:25:09,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6273, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6609, PETRI_PLACES=499, PETRI_TRANSITIONS=476} [2024-06-27 23:25:09,194 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 468 predicate places. [2024-06-27 23:25:09,194 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 476 transitions, 6609 flow [2024-06-27 23:25:09,194 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) [2024-06-27 23:25:09,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:09,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:09,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 23:25:09,195 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)] === [2024-06-27 23:25:09,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:09,195 INFO L85 PathProgramCache]: Analyzing trace with hash 2077141691, now seen corresponding path program 3 times [2024-06-27 23:25:09,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:09,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213469615] [2024-06-27 23:25:09,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:09,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:11,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:11,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:11,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213469615] [2024-06-27 23:25:11,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213469615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:11,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:11,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:25:11,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288402452] [2024-06-27 23:25:11,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:11,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:25:11,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:11,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:25:11,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:25:11,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:25:11,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 476 transitions, 6609 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 23:25:11,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:11,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:25:11,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:11,821 INFO L124 PetriNetUnfolderBase]: 857/1583 cut-off events. [2024-06-27 23:25:11,822 INFO L125 PetriNetUnfolderBase]: For 630222/630222 co-relation queries the response was YES. [2024-06-27 23:25:11,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17955 conditions, 1583 events. 857/1583 cut-off events. For 630222/630222 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9408 event pairs, 46 based on Foata normal form. 1/1582 useless extension candidates. Maximal degree in co-relation 17720. Up to 1316 conditions per place. [2024-06-27 23:25:11,848 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 414 selfloop transitions, 71 changer transitions 0/488 dead transitions. [2024-06-27 23:25:11,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 488 transitions, 7607 flow [2024-06-27 23:25:11,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:25:11,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:25:11,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 23:25:11,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-27 23:25:11,850 INFO L175 Difference]: Start difference. First operand has 499 places, 476 transitions, 6609 flow. Second operand 10 states and 137 transitions. [2024-06-27 23:25:11,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 488 transitions, 7607 flow [2024-06-27 23:25:14,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 488 transitions, 7407 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-27 23:25:14,952 INFO L231 Difference]: Finished difference. Result has 502 places, 476 transitions, 6556 flow [2024-06-27 23:25:14,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6409, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6556, PETRI_PLACES=502, PETRI_TRANSITIONS=476} [2024-06-27 23:25:14,952 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 471 predicate places. [2024-06-27 23:25:14,952 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 476 transitions, 6556 flow [2024-06-27 23:25:14,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 23:25:14,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:14,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:14,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 23:25:14,953 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)] === [2024-06-27 23:25:14,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:14,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1162815077, now seen corresponding path program 13 times [2024-06-27 23:25:14,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:14,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280620809] [2024-06-27 23:25:14,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:14,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:16,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:16,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:16,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280620809] [2024-06-27 23:25:16,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280620809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:16,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:16,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:25:16,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983334254] [2024-06-27 23:25:16,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:16,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:25:16,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:16,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:25:16,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:25:17,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:25:17,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 476 transitions, 6556 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) [2024-06-27 23:25:17,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:17,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:25:17,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:17,769 INFO L124 PetriNetUnfolderBase]: 860/1590 cut-off events. [2024-06-27 23:25:17,769 INFO L125 PetriNetUnfolderBase]: For 644052/644052 co-relation queries the response was YES. [2024-06-27 23:25:17,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18032 conditions, 1590 events. 860/1590 cut-off events. For 644052/644052 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9468 event pairs, 37 based on Foata normal form. 1/1589 useless extension candidates. Maximal degree in co-relation 17797. Up to 1181 conditions per place. [2024-06-27 23:25:17,793 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 380 selfloop transitions, 112 changer transitions 0/496 dead transitions. [2024-06-27 23:25:17,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 496 transitions, 8816 flow [2024-06-27 23:25:17,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:25:17,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:25:17,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-27 23:25:17,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 23:25:17,794 INFO L175 Difference]: Start difference. First operand has 502 places, 476 transitions, 6556 flow. Second operand 10 states and 160 transitions. [2024-06-27 23:25:17,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 496 transitions, 8816 flow [2024-06-27 23:25:20,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 496 transitions, 8641 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 23:25:20,801 INFO L231 Difference]: Finished difference. Result has 504 places, 481 transitions, 6751 flow [2024-06-27 23:25:20,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6381, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6751, PETRI_PLACES=504, PETRI_TRANSITIONS=481} [2024-06-27 23:25:20,802 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 473 predicate places. [2024-06-27 23:25:20,802 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 481 transitions, 6751 flow [2024-06-27 23:25:20,802 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) [2024-06-27 23:25:20,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:20,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:20,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 23:25:20,802 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)] === [2024-06-27 23:25:20,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:20,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1393048295, now seen corresponding path program 2 times [2024-06-27 23:25:20,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:20,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902739613] [2024-06-27 23:25:20,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:20,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:23,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:23,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:23,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902739613] [2024-06-27 23:25:23,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902739613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:23,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:23,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:25:23,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876833500] [2024-06-27 23:25:23,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:23,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:25:23,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:23,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:25:23,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:25:23,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:25:23,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 481 transitions, 6751 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) [2024-06-27 23:25:23,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:23,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:25:23,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:24,241 INFO L124 PetriNetUnfolderBase]: 871/1611 cut-off events. [2024-06-27 23:25:24,241 INFO L125 PetriNetUnfolderBase]: For 703889/703889 co-relation queries the response was YES. [2024-06-27 23:25:24,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18704 conditions, 1611 events. 871/1611 cut-off events. For 703889/703889 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 9627 event pairs, 41 based on Foata normal form. 2/1611 useless extension candidates. Maximal degree in co-relation 18468. Up to 1343 conditions per place. [2024-06-27 23:25:24,268 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 431 selfloop transitions, 63 changer transitions 0/498 dead transitions. [2024-06-27 23:25:24,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 498 transitions, 8203 flow [2024-06-27 23:25:24,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:25:24,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:25:24,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-27 23:25:24,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.459375 [2024-06-27 23:25:24,269 INFO L175 Difference]: Start difference. First operand has 504 places, 481 transitions, 6751 flow. Second operand 10 states and 147 transitions. [2024-06-27 23:25:24,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 498 transitions, 8203 flow [2024-06-27 23:25:27,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 498 transitions, 7952 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-27 23:25:27,782 INFO L231 Difference]: Finished difference. Result has 508 places, 483 transitions, 6692 flow [2024-06-27 23:25:27,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6500, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6692, PETRI_PLACES=508, PETRI_TRANSITIONS=483} [2024-06-27 23:25:27,782 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 477 predicate places. [2024-06-27 23:25:27,782 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 483 transitions, 6692 flow [2024-06-27 23:25:27,783 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) [2024-06-27 23:25:27,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:27,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:27,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 23:25:27,783 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)] === [2024-06-27 23:25:27,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:27,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1393038065, now seen corresponding path program 3 times [2024-06-27 23:25:27,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:27,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493241563] [2024-06-27 23:25:27,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:27,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:29,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:29,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:29,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493241563] [2024-06-27 23:25:29,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493241563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:29,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:29,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:29,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579767983] [2024-06-27 23:25:29,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:29,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:29,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:29,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:29,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:29,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:25:29,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 483 transitions, 6692 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) [2024-06-27 23:25:29,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:29,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:25:29,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:30,639 INFO L124 PetriNetUnfolderBase]: 878/1624 cut-off events. [2024-06-27 23:25:30,639 INFO L125 PetriNetUnfolderBase]: For 712770/712770 co-relation queries the response was YES. [2024-06-27 23:25:30,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18712 conditions, 1624 events. 878/1624 cut-off events. For 712770/712770 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 9720 event pairs, 43 based on Foata normal form. 2/1624 useless extension candidates. Maximal degree in co-relation 18474. Up to 1382 conditions per place. [2024-06-27 23:25:30,666 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 433 selfloop transitions, 63 changer transitions 0/499 dead transitions. [2024-06-27 23:25:30,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 499 transitions, 7765 flow [2024-06-27 23:25:30,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:25:30,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:25:30,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-27 23:25:30,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-27 23:25:30,667 INFO L175 Difference]: Start difference. First operand has 508 places, 483 transitions, 6692 flow. Second operand 10 states and 136 transitions. [2024-06-27 23:25:30,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 499 transitions, 7765 flow [2024-06-27 23:25:34,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 499 transitions, 7622 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-27 23:25:34,019 INFO L231 Difference]: Finished difference. Result has 513 places, 486 transitions, 6732 flow [2024-06-27 23:25:34,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6559, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6732, PETRI_PLACES=513, PETRI_TRANSITIONS=486} [2024-06-27 23:25:34,020 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 482 predicate places. [2024-06-27 23:25:34,020 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 486 transitions, 6732 flow [2024-06-27 23:25:34,020 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) [2024-06-27 23:25:34,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:34,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:34,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-27 23:25:34,020 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)] === [2024-06-27 23:25:34,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:34,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1156565477, now seen corresponding path program 14 times [2024-06-27 23:25:34,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:34,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784322032] [2024-06-27 23:25:34,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:34,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:35,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:35,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:35,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784322032] [2024-06-27 23:25:35,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784322032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:35,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:35,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:35,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966638168] [2024-06-27 23:25:35,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:35,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:35,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:35,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:35,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:35,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:25:35,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 486 transitions, 6732 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) [2024-06-27 23:25:35,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:35,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:25:35,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:36,606 INFO L124 PetriNetUnfolderBase]: 876/1621 cut-off events. [2024-06-27 23:25:36,607 INFO L125 PetriNetUnfolderBase]: For 684633/684633 co-relation queries the response was YES. [2024-06-27 23:25:36,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18489 conditions, 1621 events. 876/1621 cut-off events. For 684633/684633 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 9707 event pairs, 39 based on Foata normal form. 1/1620 useless extension candidates. Maximal degree in co-relation 18250. Up to 1303 conditions per place. [2024-06-27 23:25:36,630 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 405 selfloop transitions, 91 changer transitions 0/499 dead transitions. [2024-06-27 23:25:36,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 499 transitions, 7777 flow [2024-06-27 23:25:36,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:36,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:36,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-27 23:25:36,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-27 23:25:36,631 INFO L175 Difference]: Start difference. First operand has 513 places, 486 transitions, 6732 flow. Second operand 11 states and 148 transitions. [2024-06-27 23:25:36,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 499 transitions, 7777 flow [2024-06-27 23:25:39,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 499 transitions, 7635 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 23:25:39,782 INFO L231 Difference]: Finished difference. Result has 517 places, 487 transitions, 6804 flow [2024-06-27 23:25:39,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6590, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6804, PETRI_PLACES=517, PETRI_TRANSITIONS=487} [2024-06-27 23:25:39,782 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 486 predicate places. [2024-06-27 23:25:39,783 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 487 transitions, 6804 flow [2024-06-27 23:25:39,783 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) [2024-06-27 23:25:39,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:39,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:39,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-27 23:25:39,783 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)] === [2024-06-27 23:25:39,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:39,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1163052227, now seen corresponding path program 15 times [2024-06-27 23:25:39,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:39,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526809146] [2024-06-27 23:25:39,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:39,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:41,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:41,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:41,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526809146] [2024-06-27 23:25:41,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526809146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:41,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:41,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:41,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697808408] [2024-06-27 23:25:41,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:41,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:41,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:41,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:41,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:41,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:25:41,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 487 transitions, 6804 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) [2024-06-27 23:25:41,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:41,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:25:41,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:42,858 INFO L124 PetriNetUnfolderBase]: 872/1615 cut-off events. [2024-06-27 23:25:42,859 INFO L125 PetriNetUnfolderBase]: For 674325/674325 co-relation queries the response was YES. [2024-06-27 23:25:42,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18124 conditions, 1615 events. 872/1615 cut-off events. For 674325/674325 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 9692 event pairs, 38 based on Foata normal form. 2/1615 useless extension candidates. Maximal degree in co-relation 17883. Up to 1211 conditions per place. [2024-06-27 23:25:42,883 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 383 selfloop transitions, 115 changer transitions 0/501 dead transitions. [2024-06-27 23:25:42,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 501 transitions, 8584 flow [2024-06-27 23:25:42,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:25:42,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:25:42,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-27 23:25:42,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.465625 [2024-06-27 23:25:42,885 INFO L175 Difference]: Start difference. First operand has 517 places, 487 transitions, 6804 flow. Second operand 10 states and 149 transitions. [2024-06-27 23:25:42,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 501 transitions, 8584 flow [2024-06-27 23:25:46,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 501 transitions, 8319 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-27 23:25:46,085 INFO L231 Difference]: Finished difference. Result has 518 places, 487 transitions, 6776 flow [2024-06-27 23:25:46,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6539, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6776, PETRI_PLACES=518, PETRI_TRANSITIONS=487} [2024-06-27 23:25:46,085 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 487 predicate places. [2024-06-27 23:25:46,085 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 487 transitions, 6776 flow [2024-06-27 23:25:46,086 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) [2024-06-27 23:25:46,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:46,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:46,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-27 23:25:46,087 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)] === [2024-06-27 23:25:46,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:46,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1163061155, now seen corresponding path program 4 times [2024-06-27 23:25:46,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:46,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042423228] [2024-06-27 23:25:46,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:46,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:48,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:48,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:48,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042423228] [2024-06-27 23:25:48,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042423228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:48,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:48,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:48,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519664343] [2024-06-27 23:25:48,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:48,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:48,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:48,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:48,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:48,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:25:48,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 487 transitions, 6776 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) [2024-06-27 23:25:48,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:48,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:25:48,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:49,010 INFO L124 PetriNetUnfolderBase]: 876/1623 cut-off events. [2024-06-27 23:25:49,010 INFO L125 PetriNetUnfolderBase]: For 683063/683063 co-relation queries the response was YES. [2024-06-27 23:25:49,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18194 conditions, 1623 events. 876/1623 cut-off events. For 683063/683063 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 9730 event pairs, 42 based on Foata normal form. 2/1623 useless extension candidates. Maximal degree in co-relation 17953. Up to 1437 conditions per place. [2024-06-27 23:25:49,034 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 462 selfloop transitions, 36 changer transitions 0/501 dead transitions. [2024-06-27 23:25:49,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 501 transitions, 7828 flow [2024-06-27 23:25:49,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:25:49,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:25:49,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 23:25:49,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-27 23:25:49,035 INFO L175 Difference]: Start difference. First operand has 518 places, 487 transitions, 6776 flow. Second operand 10 states and 133 transitions. [2024-06-27 23:25:49,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 501 transitions, 7828 flow [2024-06-27 23:25:52,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 501 transitions, 7601 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 23:25:52,035 INFO L231 Difference]: Finished difference. Result has 520 places, 488 transitions, 6653 flow [2024-06-27 23:25:52,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6549, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6653, PETRI_PLACES=520, PETRI_TRANSITIONS=488} [2024-06-27 23:25:52,036 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 489 predicate places. [2024-06-27 23:25:52,036 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 488 transitions, 6653 flow [2024-06-27 23:25:52,037 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) [2024-06-27 23:25:52,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:52,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:52,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-27 23:25:52,037 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)] === [2024-06-27 23:25:52,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:52,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1393037755, now seen corresponding path program 4 times [2024-06-27 23:25:52,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:52,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726695419] [2024-06-27 23:25:52,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:52,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:54,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:54,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:54,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726695419] [2024-06-27 23:25:54,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726695419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:54,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:54,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:25:54,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387579464] [2024-06-27 23:25:54,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:54,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:25:54,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:54,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:25:54,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:25:54,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:25:54,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 488 transitions, 6653 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) [2024-06-27 23:25:54,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:54,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:25:54,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:55,169 INFO L124 PetriNetUnfolderBase]: 884/1636 cut-off events. [2024-06-27 23:25:55,169 INFO L125 PetriNetUnfolderBase]: For 690548/690548 co-relation queries the response was YES. [2024-06-27 23:25:55,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18439 conditions, 1636 events. 884/1636 cut-off events. For 690548/690548 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 9810 event pairs, 37 based on Foata normal form. 1/1635 useless extension candidates. Maximal degree in co-relation 18197. Up to 1062 conditions per place. [2024-06-27 23:25:55,193 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 305 selfloop transitions, 197 changer transitions 0/505 dead transitions. [2024-06-27 23:25:55,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 505 transitions, 8195 flow [2024-06-27 23:25:55,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:55,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:55,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 155 transitions. [2024-06-27 23:25:55,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-27 23:25:55,194 INFO L175 Difference]: Start difference. First operand has 520 places, 488 transitions, 6653 flow. Second operand 11 states and 155 transitions. [2024-06-27 23:25:55,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 505 transitions, 8195 flow [2024-06-27 23:25:58,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 505 transitions, 8103 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 23:25:58,314 INFO L231 Difference]: Finished difference. Result has 523 places, 492 transitions, 7092 flow [2024-06-27 23:25:58,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6561, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7092, PETRI_PLACES=523, PETRI_TRANSITIONS=492} [2024-06-27 23:25:58,315 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 492 predicate places. [2024-06-27 23:25:58,315 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 492 transitions, 7092 flow [2024-06-27 23:25:58,315 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) [2024-06-27 23:25:58,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:58,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:58,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-27 23:25:58,315 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)] === [2024-06-27 23:25:58,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:58,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1133485473, now seen corresponding path program 5 times [2024-06-27 23:25:58,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:58,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443821926] [2024-06-27 23:25:58,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:58,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:00,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:00,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:00,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443821926] [2024-06-27 23:26:00,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443821926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:00,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:00,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:26:00,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012104561] [2024-06-27 23:26:00,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:00,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:26:00,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:00,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:26:00,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:26:00,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:26:00,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 492 transitions, 7092 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) [2024-06-27 23:26:00,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:00,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:26:00,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:01,097 INFO L124 PetriNetUnfolderBase]: 892/1647 cut-off events. [2024-06-27 23:26:01,097 INFO L125 PetriNetUnfolderBase]: For 716969/716969 co-relation queries the response was YES. [2024-06-27 23:26:01,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19161 conditions, 1647 events. 892/1647 cut-off events. For 716969/716969 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 9852 event pairs, 37 based on Foata normal form. 1/1646 useless extension candidates. Maximal degree in co-relation 18918. Up to 1136 conditions per place. [2024-06-27 23:26:01,127 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 335 selfloop transitions, 170 changer transitions 0/509 dead transitions. [2024-06-27 23:26:01,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 509 transitions, 8650 flow [2024-06-27 23:26:01,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:26:01,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:26:01,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-27 23:26:01,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-06-27 23:26:01,128 INFO L175 Difference]: Start difference. First operand has 523 places, 492 transitions, 7092 flow. Second operand 10 states and 155 transitions. [2024-06-27 23:26:01,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 509 transitions, 8650 flow [2024-06-27 23:26:04,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 509 transitions, 8362 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-27 23:26:04,483 INFO L231 Difference]: Finished difference. Result has 527 places, 496 transitions, 7289 flow [2024-06-27 23:26:04,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6824, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7289, PETRI_PLACES=527, PETRI_TRANSITIONS=496} [2024-06-27 23:26:04,484 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 496 predicate places. [2024-06-27 23:26:04,484 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 496 transitions, 7289 flow [2024-06-27 23:26:04,484 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) [2024-06-27 23:26:04,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:04,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:04,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-27 23:26:04,484 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)] === [2024-06-27 23:26:04,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:04,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1133485783, now seen corresponding path program 5 times [2024-06-27 23:26:04,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:04,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40968500] [2024-06-27 23:26:04,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:04,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:07,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:07,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:07,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40968500] [2024-06-27 23:26:07,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40968500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:07,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:07,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:26:07,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638398585] [2024-06-27 23:26:07,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:07,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:26:07,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:07,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:26:07,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:26:07,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:26:07,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 496 transitions, 7289 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 23:26:07,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:07,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:26:07,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:07,844 INFO L124 PetriNetUnfolderBase]: 896/1657 cut-off events. [2024-06-27 23:26:07,844 INFO L125 PetriNetUnfolderBase]: For 742690/742690 co-relation queries the response was YES. [2024-06-27 23:26:07,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19423 conditions, 1657 events. 896/1657 cut-off events. For 742690/742690 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 9990 event pairs, 42 based on Foata normal form. 2/1657 useless extension candidates. Maximal degree in co-relation 19178. Up to 1430 conditions per place. [2024-06-27 23:26:07,875 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 453 selfloop transitions, 54 changer transitions 0/510 dead transitions. [2024-06-27 23:26:07,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 510 transitions, 8361 flow [2024-06-27 23:26:07,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:26:07,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:26:07,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-27 23:26:07,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-27 23:26:07,877 INFO L175 Difference]: Start difference. First operand has 527 places, 496 transitions, 7289 flow. Second operand 10 states and 135 transitions. [2024-06-27 23:26:07,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 510 transitions, 8361 flow [2024-06-27 23:26:11,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 510 transitions, 8056 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-27 23:26:11,045 INFO L231 Difference]: Finished difference. Result has 531 places, 497 transitions, 7126 flow [2024-06-27 23:26:11,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6984, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7126, PETRI_PLACES=531, PETRI_TRANSITIONS=497} [2024-06-27 23:26:11,046 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 500 predicate places. [2024-06-27 23:26:11,046 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 497 transitions, 7126 flow [2024-06-27 23:26:11,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 23:26:11,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:11,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:11,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-27 23:26:11,046 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)] === [2024-06-27 23:26:11,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:11,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1133477103, now seen corresponding path program 6 times [2024-06-27 23:26:11,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:11,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022271183] [2024-06-27 23:26:11,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:11,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:13,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:13,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:13,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022271183] [2024-06-27 23:26:13,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022271183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:13,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:13,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:26:13,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661939790] [2024-06-27 23:26:13,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:13,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:26:13,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:13,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:26:13,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:26:13,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:26:13,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 497 transitions, 7126 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 23:26:13,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:13,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:26:13,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:14,178 INFO L124 PetriNetUnfolderBase]: 894/1650 cut-off events. [2024-06-27 23:26:14,178 INFO L125 PetriNetUnfolderBase]: For 712392/712392 co-relation queries the response was YES. [2024-06-27 23:26:14,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19111 conditions, 1650 events. 894/1650 cut-off events. For 712392/712392 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 9904 event pairs, 38 based on Foata normal form. 1/1649 useless extension candidates. Maximal degree in co-relation 18864. Up to 1223 conditions per place. [2024-06-27 23:26:14,208 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 372 selfloop transitions, 134 changer transitions 0/509 dead transitions. [2024-06-27 23:26:14,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 509 transitions, 8166 flow [2024-06-27 23:26:14,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:26:14,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:26:14,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-27 23:26:14,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446875 [2024-06-27 23:26:14,209 INFO L175 Difference]: Start difference. First operand has 531 places, 497 transitions, 7126 flow. Second operand 10 states and 143 transitions. [2024-06-27 23:26:14,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 509 transitions, 8166 flow [2024-06-27 23:26:17,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 509 transitions, 7997 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-27 23:26:17,202 INFO L231 Difference]: Finished difference. Result has 533 places, 497 transitions, 7230 flow [2024-06-27 23:26:17,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6957, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7230, PETRI_PLACES=533, PETRI_TRANSITIONS=497} [2024-06-27 23:26:17,203 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 502 predicate places. [2024-06-27 23:26:17,203 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 497 transitions, 7230 flow [2024-06-27 23:26:17,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 23:26:17,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:17,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:17,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-27 23:26:17,204 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)] === [2024-06-27 23:26:17,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:17,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1133476855, now seen corresponding path program 16 times [2024-06-27 23:26:17,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:17,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149830619] [2024-06-27 23:26:17,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:17,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:18,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:18,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:18,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149830619] [2024-06-27 23:26:18,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149830619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:18,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:18,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:26:18,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937344736] [2024-06-27 23:26:18,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:18,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:26:18,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:18,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:26:18,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:26:19,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:26:19,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 497 transitions, 7230 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) [2024-06-27 23:26:19,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:19,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:26:19,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:20,047 INFO L124 PetriNetUnfolderBase]: 915/1694 cut-off events. [2024-06-27 23:26:20,047 INFO L125 PetriNetUnfolderBase]: For 792665/792665 co-relation queries the response was YES. [2024-06-27 23:26:20,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20267 conditions, 1694 events. 915/1694 cut-off events. For 792665/792665 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 10233 event pairs, 39 based on Foata normal form. 2/1694 useless extension candidates. Maximal degree in co-relation 20019. Up to 919 conditions per place. [2024-06-27 23:26:20,077 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 289 selfloop transitions, 227 changer transitions 0/519 dead transitions. [2024-06-27 23:26:20,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 519 transitions, 9304 flow [2024-06-27 23:26:20,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:26:20,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:26:20,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-27 23:26:20,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-27 23:26:20,079 INFO L175 Difference]: Start difference. First operand has 533 places, 497 transitions, 7230 flow. Second operand 10 states and 150 transitions. [2024-06-27 23:26:20,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 519 transitions, 9304 flow [2024-06-27 23:26:23,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 519 transitions, 9031 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 23:26:23,855 INFO L231 Difference]: Finished difference. Result has 534 places, 504 transitions, 7630 flow [2024-06-27 23:26:23,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=6957, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7630, PETRI_PLACES=534, PETRI_TRANSITIONS=504} [2024-06-27 23:26:23,856 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 503 predicate places. [2024-06-27 23:26:23,856 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 504 transitions, 7630 flow [2024-06-27 23:26:23,856 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) [2024-06-27 23:26:23,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:23,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:23,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-27 23:26:23,857 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)] === [2024-06-27 23:26:23,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:23,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1125433285, now seen corresponding path program 17 times [2024-06-27 23:26:23,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:23,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268896792] [2024-06-27 23:26:23,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:23,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:25,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:25,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:25,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268896792] [2024-06-27 23:26:25,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268896792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:25,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:25,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:26:25,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134821507] [2024-06-27 23:26:25,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:25,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:26:25,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:25,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:26:25,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:26:25,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:26:25,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 504 transitions, 7630 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) [2024-06-27 23:26:25,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:25,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:26:25,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:26,781 INFO L124 PetriNetUnfolderBase]: 932/1727 cut-off events. [2024-06-27 23:26:26,782 INFO L125 PetriNetUnfolderBase]: For 830611/830611 co-relation queries the response was YES. [2024-06-27 23:26:26,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21345 conditions, 1727 events. 932/1727 cut-off events. For 830611/830611 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 10463 event pairs, 49 based on Foata normal form. 2/1727 useless extension candidates. Maximal degree in co-relation 21096. Up to 936 conditions per place. [2024-06-27 23:26:26,811 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 338 selfloop transitions, 187 changer transitions 0/528 dead transitions. [2024-06-27 23:26:26,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 528 transitions, 10528 flow [2024-06-27 23:26:26,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:26:26,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:26:26,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 23:26:26,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-27 23:26:26,813 INFO L175 Difference]: Start difference. First operand has 534 places, 504 transitions, 7630 flow. Second operand 10 states and 156 transitions. [2024-06-27 23:26:26,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 528 transitions, 10528 flow [2024-06-27 23:26:31,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 528 transitions, 10186 flow, removed 71 selfloop flow, removed 5 redundant places. [2024-06-27 23:26:31,166 INFO L231 Difference]: Finished difference. Result has 540 places, 511 transitions, 7901 flow [2024-06-27 23:26:31,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7304, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7901, PETRI_PLACES=540, PETRI_TRANSITIONS=511} [2024-06-27 23:26:31,167 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 509 predicate places. [2024-06-27 23:26:31,167 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 511 transitions, 7901 flow [2024-06-27 23:26:31,167 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) [2024-06-27 23:26:31,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:31,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:31,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-27 23:26:31,168 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)] === [2024-06-27 23:26:31,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:31,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1384705885, now seen corresponding path program 7 times [2024-06-27 23:26:31,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:31,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199977382] [2024-06-27 23:26:31,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:31,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:33,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:33,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:33,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199977382] [2024-06-27 23:26:33,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199977382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:33,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:33,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:26:33,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207761900] [2024-06-27 23:26:33,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:33,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:26:33,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:33,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:26:33,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:26:33,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:26:33,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 511 transitions, 7901 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) [2024-06-27 23:26:33,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:33,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:26:33,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:34,456 INFO L124 PetriNetUnfolderBase]: 935/1730 cut-off events. [2024-06-27 23:26:34,456 INFO L125 PetriNetUnfolderBase]: For 822349/822349 co-relation queries the response was YES. [2024-06-27 23:26:34,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21572 conditions, 1730 events. 935/1730 cut-off events. For 822349/822349 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 10485 event pairs, 49 based on Foata normal form. 1/1729 useless extension candidates. Maximal degree in co-relation 21320. Up to 1204 conditions per place. [2024-06-27 23:26:34,493 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 378 selfloop transitions, 145 changer transitions 0/526 dead transitions. [2024-06-27 23:26:34,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 526 transitions, 9440 flow [2024-06-27 23:26:34,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:26:34,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:26:34,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-27 23:26:34,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 23:26:34,494 INFO L175 Difference]: Start difference. First operand has 540 places, 511 transitions, 7901 flow. Second operand 11 states and 154 transitions. [2024-06-27 23:26:34,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 526 transitions, 9440 flow [2024-06-27 23:26:38,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 526 transitions, 8817 flow, removed 61 selfloop flow, removed 8 redundant places. [2024-06-27 23:26:38,549 INFO L231 Difference]: Finished difference. Result has 543 places, 513 transitions, 7644 flow [2024-06-27 23:26:38,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7289, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7644, PETRI_PLACES=543, PETRI_TRANSITIONS=513} [2024-06-27 23:26:38,551 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 512 predicate places. [2024-06-27 23:26:38,551 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 513 transitions, 7644 flow [2024-06-27 23:26:38,551 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) [2024-06-27 23:26:38,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:38,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:38,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-27 23:26:38,551 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)] === [2024-06-27 23:26:38,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:38,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1384697515, now seen corresponding path program 8 times [2024-06-27 23:26:38,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:38,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901248292] [2024-06-27 23:26:38,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:38,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:38,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:41,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:41,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:41,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901248292] [2024-06-27 23:26:41,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901248292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:41,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:41,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:26:41,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236060977] [2024-06-27 23:26:41,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:41,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:26:41,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:41,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:26:41,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:26:41,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:26:41,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 513 transitions, 7644 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 23:26:41,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:41,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:26:41,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:42,663 INFO L124 PetriNetUnfolderBase]: 932/1726 cut-off events. [2024-06-27 23:26:42,663 INFO L125 PetriNetUnfolderBase]: For 818883/818883 co-relation queries the response was YES. [2024-06-27 23:26:42,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20746 conditions, 1726 events. 932/1726 cut-off events. For 818883/818883 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 10465 event pairs, 39 based on Foata normal form. 1/1725 useless extension candidates. Maximal degree in co-relation 20494. Up to 1223 conditions per place. [2024-06-27 23:26:42,695 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 389 selfloop transitions, 134 changer transitions 0/526 dead transitions. [2024-06-27 23:26:42,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 526 transitions, 9114 flow [2024-06-27 23:26:42,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:26:42,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:26:42,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-27 23:26:42,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.465625 [2024-06-27 23:26:42,697 INFO L175 Difference]: Start difference. First operand has 543 places, 513 transitions, 7644 flow. Second operand 10 states and 149 transitions. [2024-06-27 23:26:42,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 526 transitions, 9114 flow [2024-06-27 23:26:46,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 526 transitions, 8645 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-27 23:26:46,725 INFO L231 Difference]: Finished difference. Result has 543 places, 513 transitions, 7448 flow [2024-06-27 23:26:46,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7175, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7448, PETRI_PLACES=543, PETRI_TRANSITIONS=513} [2024-06-27 23:26:46,726 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 512 predicate places. [2024-06-27 23:26:46,726 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 513 transitions, 7448 flow [2024-06-27 23:26:46,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 23:26:46,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:46,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:46,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-27 23:26:46,727 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)] === [2024-06-27 23:26:46,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:46,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1384706195, now seen corresponding path program 6 times [2024-06-27 23:26:46,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:46,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538393143] [2024-06-27 23:26:46,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:46,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:48,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:48,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:48,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538393143] [2024-06-27 23:26:48,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538393143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:48,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:48,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:26:48,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45297309] [2024-06-27 23:26:48,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:48,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:26:48,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:48,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:26:48,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:26:48,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:26:48,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 513 transitions, 7448 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) [2024-06-27 23:26:48,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:48,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:26:48,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:49,842 INFO L124 PetriNetUnfolderBase]: 929/1719 cut-off events. [2024-06-27 23:26:49,843 INFO L125 PetriNetUnfolderBase]: For 799616/799616 co-relation queries the response was YES. [2024-06-27 23:26:49,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19997 conditions, 1719 events. 929/1719 cut-off events. For 799616/799616 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 10424 event pairs, 52 based on Foata normal form. 2/1719 useless extension candidates. Maximal degree in co-relation 19747. Up to 1469 conditions per place. [2024-06-27 23:26:49,877 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 468 selfloop transitions, 55 changer transitions 0/526 dead transitions. [2024-06-27 23:26:49,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 526 transitions, 8524 flow [2024-06-27 23:26:49,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:26:49,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:26:49,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-27 23:26:49,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-27 23:26:49,878 INFO L175 Difference]: Start difference. First operand has 543 places, 513 transitions, 7448 flow. Second operand 10 states and 138 transitions. [2024-06-27 23:26:49,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 526 transitions, 8524 flow [2024-06-27 23:26:53,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 526 transitions, 8203 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 23:26:54,018 INFO L231 Difference]: Finished difference. Result has 545 places, 513 transitions, 7241 flow [2024-06-27 23:26:54,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7127, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7241, PETRI_PLACES=545, PETRI_TRANSITIONS=513} [2024-06-27 23:26:54,024 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 514 predicate places. [2024-06-27 23:26:54,024 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 513 transitions, 7241 flow [2024-06-27 23:26:54,024 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) [2024-06-27 23:26:54,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:54,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:54,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-27 23:26:54,024 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)] === [2024-06-27 23:26:54,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:54,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1125196135, now seen corresponding path program 18 times [2024-06-27 23:26:54,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:54,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391294416] [2024-06-27 23:26:54,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:54,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:55,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:55,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:55,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391294416] [2024-06-27 23:26:55,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391294416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:55,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:55,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:26:55,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557117102] [2024-06-27 23:26:55,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:55,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:26:55,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:55,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:26:55,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:26:56,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:26:56,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 513 transitions, 7241 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) [2024-06-27 23:26:56,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:56,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:26:56,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:56,915 INFO L124 PetriNetUnfolderBase]: 937/1734 cut-off events. [2024-06-27 23:26:56,915 INFO L125 PetriNetUnfolderBase]: For 812275/812275 co-relation queries the response was YES. [2024-06-27 23:26:56,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20134 conditions, 1734 events. 937/1734 cut-off events. For 812275/812275 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 10505 event pairs, 37 based on Foata normal form. 1/1733 useless extension candidates. Maximal degree in co-relation 19884. Up to 938 conditions per place. [2024-06-27 23:26:56,945 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 325 selfloop transitions, 205 changer transitions 0/533 dead transitions. [2024-06-27 23:26:56,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 533 transitions, 9666 flow [2024-06-27 23:26:56,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:26:56,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:26:56,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-27 23:26:56,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 23:26:56,969 INFO L175 Difference]: Start difference. First operand has 545 places, 513 transitions, 7241 flow. Second operand 11 states and 160 transitions. [2024-06-27 23:26:56,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 533 transitions, 9666 flow [2024-06-27 23:27:01,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 533 transitions, 9491 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 23:27:01,008 INFO L231 Difference]: Finished difference. Result has 544 places, 518 transitions, 7621 flow [2024-06-27 23:27:01,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7066, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7621, PETRI_PLACES=544, PETRI_TRANSITIONS=518} [2024-06-27 23:27:01,009 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 513 predicate places. [2024-06-27 23:27:01,009 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 518 transitions, 7621 flow [2024-06-27 23:27:01,009 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) [2024-06-27 23:27:01,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:01,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:01,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-27 23:27:01,010 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)] === [2024-06-27 23:27:01,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:01,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1125202645, now seen corresponding path program 19 times [2024-06-27 23:27:01,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:01,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816757095] [2024-06-27 23:27:01,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:01,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:02,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:02,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:02,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816757095] [2024-06-27 23:27:02,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816757095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:02,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:02,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:27:02,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511145008] [2024-06-27 23:27:02,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:02,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:27:02,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:02,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:27:02,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:27:02,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:27:02,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 518 transitions, 7621 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) [2024-06-27 23:27:02,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:02,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:27:02,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:03,429 INFO L124 PetriNetUnfolderBase]: 934/1731 cut-off events. [2024-06-27 23:27:03,430 INFO L125 PetriNetUnfolderBase]: For 801957/801957 co-relation queries the response was YES. [2024-06-27 23:27:03,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20026 conditions, 1731 events. 934/1731 cut-off events. For 801957/801957 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 10501 event pairs, 37 based on Foata normal form. 2/1731 useless extension candidates. Maximal degree in co-relation 19775. Up to 937 conditions per place. [2024-06-27 23:27:03,456 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 335 selfloop transitions, 194 changer transitions 0/533 dead transitions. [2024-06-27 23:27:03,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 533 transitions, 9913 flow [2024-06-27 23:27:03,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:27:03,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:27:03,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 23:27:03,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50625 [2024-06-27 23:27:03,457 INFO L175 Difference]: Start difference. First operand has 544 places, 518 transitions, 7621 flow. Second operand 10 states and 162 transitions. [2024-06-27 23:27:03,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 533 transitions, 9913 flow [2024-06-27 23:27:07,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 533 transitions, 9499 flow, removed 61 selfloop flow, removed 7 redundant places. [2024-06-27 23:27:07,850 INFO L231 Difference]: Finished difference. Result has 547 places, 518 transitions, 7602 flow [2024-06-27 23:27:07,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7207, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7602, PETRI_PLACES=547, PETRI_TRANSITIONS=518} [2024-06-27 23:27:07,850 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 516 predicate places. [2024-06-27 23:27:07,850 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 518 transitions, 7602 flow [2024-06-27 23:27:07,850 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) [2024-06-27 23:27:07,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:07,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:07,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-27 23:27:07,851 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)] === [2024-06-27 23:27:07,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:07,851 INFO L85 PathProgramCache]: Analyzing trace with hash -280648847, now seen corresponding path program 9 times [2024-06-27 23:27:07,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:07,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333078268] [2024-06-27 23:27:07,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:07,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:10,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:10,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333078268] [2024-06-27 23:27:10,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333078268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:10,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:10,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:27:10,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425888148] [2024-06-27 23:27:10,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:10,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:27:10,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:10,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:27:10,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:27:10,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:27:10,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 518 transitions, 7602 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) [2024-06-27 23:27:10,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:10,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:27:10,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:11,477 INFO L124 PetriNetUnfolderBase]: 931/1725 cut-off events. [2024-06-27 23:27:11,478 INFO L125 PetriNetUnfolderBase]: For 772596/772596 co-relation queries the response was YES. [2024-06-27 23:27:11,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19824 conditions, 1725 events. 931/1725 cut-off events. For 772596/772596 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 10491 event pairs, 37 based on Foata normal form. 1/1724 useless extension candidates. Maximal degree in co-relation 19572. Up to 1223 conditions per place. [2024-06-27 23:27:11,508 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 390 selfloop transitions, 137 changer transitions 0/530 dead transitions. [2024-06-27 23:27:11,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 530 transitions, 8684 flow [2024-06-27 23:27:11,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:27:11,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:27:11,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 146 transitions. [2024-06-27 23:27:11,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45625 [2024-06-27 23:27:11,509 INFO L175 Difference]: Start difference. First operand has 547 places, 518 transitions, 7602 flow. Second operand 10 states and 146 transitions. [2024-06-27 23:27:11,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 530 transitions, 8684 flow [2024-06-27 23:27:15,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 530 transitions, 8235 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 23:27:15,517 INFO L231 Difference]: Finished difference. Result has 548 places, 518 transitions, 7432 flow [2024-06-27 23:27:15,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7153, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7432, PETRI_PLACES=548, PETRI_TRANSITIONS=518} [2024-06-27 23:27:15,518 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 517 predicate places. [2024-06-27 23:27:15,518 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 518 transitions, 7432 flow [2024-06-27 23:27:15,518 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) [2024-06-27 23:27:15,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:15,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:15,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-27 23:27:15,519 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)] === [2024-06-27 23:27:15,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:15,519 INFO L85 PathProgramCache]: Analyzing trace with hash 2076267683, now seen corresponding path program 7 times [2024-06-27 23:27:15,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:15,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023404028] [2024-06-27 23:27:15,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:15,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:17,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:17,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:17,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023404028] [2024-06-27 23:27:17,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023404028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:17,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:17,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:27:17,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538774996] [2024-06-27 23:27:17,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:17,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:27:17,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:17,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:27:17,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:27:17,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:27:17,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 518 transitions, 7432 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) [2024-06-27 23:27:17,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:17,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:27:17,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:18,088 INFO L124 PetriNetUnfolderBase]: 935/1732 cut-off events. [2024-06-27 23:27:18,088 INFO L125 PetriNetUnfolderBase]: For 792419/792419 co-relation queries the response was YES. [2024-06-27 23:27:18,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19734 conditions, 1732 events. 935/1732 cut-off events. For 792419/792419 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 10541 event pairs, 53 based on Foata normal form. 2/1730 useless extension candidates. Maximal degree in co-relation 19482. Up to 1379 conditions per place. [2024-06-27 23:27:18,117 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 434 selfloop transitions, 92 changer transitions 0/530 dead transitions. [2024-06-27 23:27:18,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 530 transitions, 8540 flow [2024-06-27 23:27:18,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:27:18,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:27:18,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-27 23:27:18,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471875 [2024-06-27 23:27:18,119 INFO L175 Difference]: Start difference. First operand has 548 places, 518 transitions, 7432 flow. Second operand 10 states and 151 transitions. [2024-06-27 23:27:18,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 530 transitions, 8540 flow [2024-06-27 23:27:22,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 530 transitions, 8250 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 23:27:22,265 INFO L231 Difference]: Finished difference. Result has 548 places, 519 transitions, 7364 flow [2024-06-27 23:27:22,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7142, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7364, PETRI_PLACES=548, PETRI_TRANSITIONS=519} [2024-06-27 23:27:22,266 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 517 predicate places. [2024-06-27 23:27:22,266 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 519 transitions, 7364 flow [2024-06-27 23:27:22,266 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) [2024-06-27 23:27:22,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:22,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:22,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-27 23:27:22,266 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)] === [2024-06-27 23:27:22,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:22,267 INFO L85 PathProgramCache]: Analyzing trace with hash 2076267373, now seen corresponding path program 10 times [2024-06-27 23:27:22,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:22,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712020109] [2024-06-27 23:27:22,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:22,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:24,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:24,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:24,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712020109] [2024-06-27 23:27:24,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712020109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:24,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:24,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:27:24,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830322814] [2024-06-27 23:27:24,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:24,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:27:24,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:24,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:27:24,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:27:24,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:27:24,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 519 transitions, 7364 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) [2024-06-27 23:27:24,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:24,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:27:24,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:25,651 INFO L124 PetriNetUnfolderBase]: 948/1752 cut-off events. [2024-06-27 23:27:25,651 INFO L125 PetriNetUnfolderBase]: For 828763/828763 co-relation queries the response was YES. [2024-06-27 23:27:25,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20292 conditions, 1752 events. 948/1752 cut-off events. For 828763/828763 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 10665 event pairs, 49 based on Foata normal form. 1/1747 useless extension candidates. Maximal degree in co-relation 20039. Up to 950 conditions per place. [2024-06-27 23:27:25,684 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 317 selfloop transitions, 218 changer transitions 0/539 dead transitions. [2024-06-27 23:27:25,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 539 transitions, 10226 flow [2024-06-27 23:27:25,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:27:25,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:27:25,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 23:27:25,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-06-27 23:27:25,685 INFO L175 Difference]: Start difference. First operand has 548 places, 519 transitions, 7364 flow. Second operand 10 states and 165 transitions. [2024-06-27 23:27:25,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 539 transitions, 10226 flow [2024-06-27 23:27:29,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 539 transitions, 10014 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 23:27:29,548 INFO L231 Difference]: Finished difference. Result has 550 places, 525 transitions, 7731 flow [2024-06-27 23:27:29,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7152, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7731, PETRI_PLACES=550, PETRI_TRANSITIONS=525} [2024-06-27 23:27:29,548 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 519 predicate places. [2024-06-27 23:27:29,549 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 525 transitions, 7731 flow [2024-06-27 23:27:29,549 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) [2024-06-27 23:27:29,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:29,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:29,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-27 23:27:29,549 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)] === [2024-06-27 23:27:29,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:29,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1558136477, now seen corresponding path program 6 times [2024-06-27 23:27:29,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:29,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682567583] [2024-06-27 23:27:29,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:29,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:31,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:31,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:31,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682567583] [2024-06-27 23:27:31,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682567583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:31,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:31,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:27:31,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736350005] [2024-06-27 23:27:31,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:31,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:27:31,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:31,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:27:31,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:27:31,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:27:31,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 525 transitions, 7731 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:31,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:31,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:27:31,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:32,181 INFO L124 PetriNetUnfolderBase]: 952/1758 cut-off events. [2024-06-27 23:27:32,181 INFO L125 PetriNetUnfolderBase]: For 850915/850915 co-relation queries the response was YES. [2024-06-27 23:27:32,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20638 conditions, 1758 events. 952/1758 cut-off events. For 850915/850915 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 10688 event pairs, 61 based on Foata normal form. 2/1754 useless extension candidates. Maximal degree in co-relation 20383. Up to 1449 conditions per place. [2024-06-27 23:27:32,211 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 450 selfloop transitions, 83 changer transitions 0/536 dead transitions. [2024-06-27 23:27:32,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 536 transitions, 8859 flow [2024-06-27 23:27:32,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:27:32,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:27:32,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 23:27:32,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:27:32,212 INFO L175 Difference]: Start difference. First operand has 550 places, 525 transitions, 7731 flow. Second operand 10 states and 128 transitions. [2024-06-27 23:27:32,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 536 transitions, 8859 flow [2024-06-27 23:27:36,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 536 transitions, 8407 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 23:27:36,750 INFO L231 Difference]: Finished difference. Result has 555 places, 526 transitions, 7491 flow [2024-06-27 23:27:36,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7279, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7491, PETRI_PLACES=555, PETRI_TRANSITIONS=526} [2024-06-27 23:27:36,751 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 524 predicate places. [2024-06-27 23:27:36,751 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 526 transitions, 7491 flow [2024-06-27 23:27:36,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:36,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:36,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:36,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-27 23:27:36,752 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)] === [2024-06-27 23:27:36,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:36,752 INFO L85 PathProgramCache]: Analyzing trace with hash 74019925, now seen corresponding path program 20 times [2024-06-27 23:27:36,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:36,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012674078] [2024-06-27 23:27:36,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:36,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:38,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:38,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:38,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012674078] [2024-06-27 23:27:38,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012674078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:38,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:38,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:27:38,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134098298] [2024-06-27 23:27:38,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:38,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:27:38,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:38,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:27:38,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:27:38,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:27:38,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 526 transitions, 7491 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) [2024-06-27 23:27:38,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:38,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:27:38,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:39,363 INFO L124 PetriNetUnfolderBase]: 980/1811 cut-off events. [2024-06-27 23:27:39,363 INFO L125 PetriNetUnfolderBase]: For 941486/941486 co-relation queries the response was YES. [2024-06-27 23:27:39,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21941 conditions, 1811 events. 980/1811 cut-off events. For 941486/941486 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 11101 event pairs, 63 based on Foata normal form. 1/1806 useless extension candidates. Maximal degree in co-relation 21685. Up to 1410 conditions per place. [2024-06-27 23:27:39,397 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 443 selfloop transitions, 102 changer transitions 0/549 dead transitions. [2024-06-27 23:27:39,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 549 transitions, 10127 flow [2024-06-27 23:27:39,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:27:39,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:27:39,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-27 23:27:39,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.496875 [2024-06-27 23:27:39,398 INFO L175 Difference]: Start difference. First operand has 555 places, 526 transitions, 7491 flow. Second operand 10 states and 159 transitions. [2024-06-27 23:27:39,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 549 transitions, 10127 flow [2024-06-27 23:27:44,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 549 transitions, 9925 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 23:27:44,196 INFO L231 Difference]: Finished difference. Result has 558 places, 535 transitions, 7770 flow [2024-06-27 23:27:44,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7289, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7770, PETRI_PLACES=558, PETRI_TRANSITIONS=535} [2024-06-27 23:27:44,197 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 527 predicate places. [2024-06-27 23:27:44,197 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 535 transitions, 7770 flow [2024-06-27 23:27:44,197 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) [2024-06-27 23:27:44,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:44,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:44,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-27 23:27:44,197 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)] === [2024-06-27 23:27:44,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:44,198 INFO L85 PathProgramCache]: Analyzing trace with hash 2076258755, now seen corresponding path program 21 times [2024-06-27 23:27:44,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:44,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237291952] [2024-06-27 23:27:44,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:44,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:46,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:46,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:46,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237291952] [2024-06-27 23:27:46,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237291952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:46,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:46,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:27:46,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169754650] [2024-06-27 23:27:46,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:46,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:27:46,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:46,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:27:46,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:27:46,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:27:46,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 535 transitions, 7770 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) [2024-06-27 23:27:46,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:46,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:27:46,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:47,427 INFO L124 PetriNetUnfolderBase]: 1012/1874 cut-off events. [2024-06-27 23:27:47,428 INFO L125 PetriNetUnfolderBase]: For 1081761/1081761 co-relation queries the response was YES. [2024-06-27 23:27:47,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23759 conditions, 1874 events. 1012/1874 cut-off events. For 1081761/1081761 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 11574 event pairs, 54 based on Foata normal form. 2/1870 useless extension candidates. Maximal degree in co-relation 23501. Up to 740 conditions per place. [2024-06-27 23:27:47,464 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 313 selfloop transitions, 247 changer transitions 0/563 dead transitions. [2024-06-27 23:27:47,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 563 transitions, 11000 flow [2024-06-27 23:27:47,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:27:47,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:27:47,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-27 23:27:47,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.496875 [2024-06-27 23:27:47,465 INFO L175 Difference]: Start difference. First operand has 558 places, 535 transitions, 7770 flow. Second operand 10 states and 159 transitions. [2024-06-27 23:27:47,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 563 transitions, 11000 flow [2024-06-27 23:27:53,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 563 transitions, 10803 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-06-27 23:27:53,688 INFO L231 Difference]: Finished difference. Result has 564 places, 546 transitions, 8400 flow [2024-06-27 23:27:53,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7573, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8400, PETRI_PLACES=564, PETRI_TRANSITIONS=546} [2024-06-27 23:27:53,689 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 533 predicate places. [2024-06-27 23:27:53,689 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 546 transitions, 8400 flow [2024-06-27 23:27:53,689 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) [2024-06-27 23:27:53,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:53,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:53,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-27 23:27:53,689 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)] === [2024-06-27 23:27:53,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:53,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1551465277, now seen corresponding path program 22 times [2024-06-27 23:27:53,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:53,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347589869] [2024-06-27 23:27:53,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:53,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:55,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:55,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:55,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347589869] [2024-06-27 23:27:55,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347589869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:55,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:55,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:27:55,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742472943] [2024-06-27 23:27:55,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:55,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:27:55,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:55,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:27:55,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:27:56,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:27:56,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 546 transitions, 8400 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:56,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:56,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:27:56,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:56,952 INFO L124 PetriNetUnfolderBase]: 1023/1894 cut-off events. [2024-06-27 23:27:56,953 INFO L125 PetriNetUnfolderBase]: For 1112370/1112370 co-relation queries the response was YES. [2024-06-27 23:27:56,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24652 conditions, 1894 events. 1023/1894 cut-off events. For 1112370/1112370 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 11764 event pairs, 54 based on Foata normal form. 2/1890 useless extension candidates. Maximal degree in co-relation 24392. Up to 1474 conditions per place. [2024-06-27 23:27:56,990 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 455 selfloop transitions, 107 changer transitions 0/565 dead transitions. [2024-06-27 23:27:56,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 565 transitions, 10556 flow [2024-06-27 23:27:56,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:27:56,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:27:56,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 156 transitions. [2024-06-27 23:27:56,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-27 23:27:56,992 INFO L175 Difference]: Start difference. First operand has 564 places, 546 transitions, 8400 flow. Second operand 11 states and 156 transitions. [2024-06-27 23:27:56,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 565 transitions, 10556 flow [2024-06-27 23:28:02,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 565 transitions, 10308 flow, removed 77 selfloop flow, removed 3 redundant places. [2024-06-27 23:28:02,999 INFO L231 Difference]: Finished difference. Result has 572 places, 551 transitions, 8496 flow [2024-06-27 23:28:02,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8152, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8496, PETRI_PLACES=572, PETRI_TRANSITIONS=551} [2024-06-27 23:28:02,999 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 541 predicate places. [2024-06-27 23:28:02,999 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 551 transitions, 8496 flow [2024-06-27 23:28:02,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:03,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:03,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:03,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-27 23:28:03,000 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)] === [2024-06-27 23:28:03,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:03,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1551456349, now seen corresponding path program 8 times [2024-06-27 23:28:03,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:03,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124721369] [2024-06-27 23:28:03,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:03,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:05,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:05,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:05,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124721369] [2024-06-27 23:28:05,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124721369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:05,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:05,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:28:05,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005418109] [2024-06-27 23:28:05,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:05,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:28:05,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:05,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:28:05,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:28:05,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:28:05,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 551 transitions, 8496 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 23:28:05,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:05,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:28:05,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:05,902 INFO L124 PetriNetUnfolderBase]: 1027/1905 cut-off events. [2024-06-27 23:28:05,903 INFO L125 PetriNetUnfolderBase]: For 1125118/1125118 co-relation queries the response was YES. [2024-06-27 23:28:05,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24715 conditions, 1905 events. 1027/1905 cut-off events. For 1125118/1125118 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 11863 event pairs, 46 based on Foata normal form. 2/1903 useless extension candidates. Maximal degree in co-relation 24452. Up to 1685 conditions per place. [2024-06-27 23:28:05,939 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 524 selfloop transitions, 36 changer transitions 0/563 dead transitions. [2024-06-27 23:28:05,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 563 transitions, 9674 flow [2024-06-27 23:28:05,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:28:05,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:28:05,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-27 23:28:05,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-27 23:28:05,941 INFO L175 Difference]: Start difference. First operand has 572 places, 551 transitions, 8496 flow. Second operand 10 states and 132 transitions. [2024-06-27 23:28:05,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 563 transitions, 9674 flow [2024-06-27 23:28:11,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 563 transitions, 9432 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-27 23:28:11,680 INFO L231 Difference]: Finished difference. Result has 575 places, 552 transitions, 8366 flow [2024-06-27 23:28:11,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8254, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8366, PETRI_PLACES=575, PETRI_TRANSITIONS=552} [2024-06-27 23:28:11,680 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 544 predicate places. [2024-06-27 23:28:11,681 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 552 transitions, 8366 flow [2024-06-27 23:28:11,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 23:28:11,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:11,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:11,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-27 23:28:11,681 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)] === [2024-06-27 23:28:11,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:11,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1083967003, now seen corresponding path program 23 times [2024-06-27 23:28:11,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:11,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505709996] [2024-06-27 23:28:11,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:11,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:14,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:14,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:14,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505709996] [2024-06-27 23:28:14,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505709996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:14,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:14,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:28:14,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891162380] [2024-06-27 23:28:14,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:14,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:28:14,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:14,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:28:14,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:28:14,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:28:14,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 552 transitions, 8366 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:14,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:14,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:28:14,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:15,319 INFO L124 PetriNetUnfolderBase]: 1028/1906 cut-off events. [2024-06-27 23:28:15,319 INFO L125 PetriNetUnfolderBase]: For 1114695/1114695 co-relation queries the response was YES. [2024-06-27 23:28:15,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24348 conditions, 1906 events. 1028/1906 cut-off events. For 1114695/1114695 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 11841 event pairs, 101 based on Foata normal form. 2/1906 useless extension candidates. Maximal degree in co-relation 24085. Up to 1704 conditions per place. [2024-06-27 23:28:15,355 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 530 selfloop transitions, 33 changer transitions 0/566 dead transitions. [2024-06-27 23:28:15,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 566 transitions, 10018 flow [2024-06-27 23:28:15,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:28:15,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:28:15,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-27 23:28:15,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-27 23:28:15,357 INFO L175 Difference]: Start difference. First operand has 575 places, 552 transitions, 8366 flow. Second operand 12 states and 140 transitions. [2024-06-27 23:28:15,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 566 transitions, 10018 flow [2024-06-27 23:28:21,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 566 transitions, 9916 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 23:28:21,411 INFO L231 Difference]: Finished difference. Result has 579 places, 555 transitions, 8423 flow [2024-06-27 23:28:21,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8264, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8423, PETRI_PLACES=579, PETRI_TRANSITIONS=555} [2024-06-27 23:28:21,412 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 548 predicate places. [2024-06-27 23:28:21,412 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 555 transitions, 8423 flow [2024-06-27 23:28:21,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:21,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:21,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:21,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-27 23:28:21,413 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)] === [2024-06-27 23:28:21,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:21,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1941643313, now seen corresponding path program 9 times [2024-06-27 23:28:21,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:21,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646011090] [2024-06-27 23:28:21,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:21,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:25,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:25,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:25,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646011090] [2024-06-27 23:28:25,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646011090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:25,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:25,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:28:25,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619190018] [2024-06-27 23:28:25,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:25,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:28:25,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:25,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:28:25,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:28:25,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:28:25,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 555 transitions, 8423 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:25,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:25,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:28:25,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:26,812 INFO L124 PetriNetUnfolderBase]: 1032/1914 cut-off events. [2024-06-27 23:28:26,813 INFO L125 PetriNetUnfolderBase]: For 1125136/1125136 co-relation queries the response was YES. [2024-06-27 23:28:26,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24435 conditions, 1914 events. 1032/1914 cut-off events. For 1125136/1125136 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 11901 event pairs, 101 based on Foata normal form. 2/1914 useless extension candidates. Maximal degree in co-relation 24170. Up to 1743 conditions per place. [2024-06-27 23:28:26,850 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 545 selfloop transitions, 19 changer transitions 0/567 dead transitions. [2024-06-27 23:28:26,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 567 transitions, 9611 flow [2024-06-27 23:28:26,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:28:26,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:28:26,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-27 23:28:26,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-27 23:28:26,851 INFO L175 Difference]: Start difference. First operand has 579 places, 555 transitions, 8423 flow. Second operand 12 states and 133 transitions. [2024-06-27 23:28:26,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 567 transitions, 9611 flow [2024-06-27 23:28:32,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 567 transitions, 9462 flow, removed 40 selfloop flow, removed 10 redundant places. [2024-06-27 23:28:32,908 INFO L231 Difference]: Finished difference. Result has 581 places, 556 transitions, 8354 flow [2024-06-27 23:28:32,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8274, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8354, PETRI_PLACES=581, PETRI_TRANSITIONS=556} [2024-06-27 23:28:32,908 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 550 predicate places. [2024-06-27 23:28:32,908 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 556 transitions, 8354 flow [2024-06-27 23:28:32,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:32,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:32,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:32,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-27 23:28:32,909 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)] === [2024-06-27 23:28:32,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:32,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1329811309, now seen corresponding path program 10 times [2024-06-27 23:28:32,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:32,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889583182] [2024-06-27 23:28:32,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:32,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:35,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:35,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889583182] [2024-06-27 23:28:35,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889583182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:35,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:35,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:28:35,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022511264] [2024-06-27 23:28:35,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:35,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:28:35,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:35,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:28:35,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:28:35,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:28:35,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 556 transitions, 8354 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 23:28:35,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:35,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:28:35,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:35,919 INFO L124 PetriNetUnfolderBase]: 1036/1921 cut-off events. [2024-06-27 23:28:35,919 INFO L125 PetriNetUnfolderBase]: For 1138506/1138506 co-relation queries the response was YES. [2024-06-27 23:28:35,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24455 conditions, 1921 events. 1036/1921 cut-off events. For 1138506/1138506 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 11980 event pairs, 47 based on Foata normal form. 2/1919 useless extension candidates. Maximal degree in co-relation 24189. Up to 1676 conditions per place. [2024-06-27 23:28:35,957 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 517 selfloop transitions, 48 changer transitions 0/568 dead transitions. [2024-06-27 23:28:35,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 568 transitions, 9546 flow [2024-06-27 23:28:35,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:28:35,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:28:35,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-27 23:28:35,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-27 23:28:35,959 INFO L175 Difference]: Start difference. First operand has 581 places, 556 transitions, 8354 flow. Second operand 10 states and 138 transitions. [2024-06-27 23:28:35,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 568 transitions, 9546 flow [2024-06-27 23:28:42,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 568 transitions, 9476 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-27 23:28:42,112 INFO L231 Difference]: Finished difference. Result has 581 places, 557 transitions, 8424 flow [2024-06-27 23:28:42,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8284, PETRI_DIFFERENCE_MINUEND_PLACES=571, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8424, PETRI_PLACES=581, PETRI_TRANSITIONS=557} [2024-06-27 23:28:42,112 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 550 predicate places. [2024-06-27 23:28:42,112 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 557 transitions, 8424 flow [2024-06-27 23:28:42,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-27 23:28:42,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:42,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:42,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-27 23:28:42,113 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)] === [2024-06-27 23:28:42,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:42,114 INFO L85 PathProgramCache]: Analyzing trace with hash 801417373, now seen corresponding path program 11 times [2024-06-27 23:28:42,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:42,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278686666] [2024-06-27 23:28:42,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:42,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:44,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:44,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:44,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278686666] [2024-06-27 23:28:44,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278686666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:44,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:44,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:28:44,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547498931] [2024-06-27 23:28:44,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:44,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:28:44,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:44,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:28:44,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:28:44,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:28:44,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 557 transitions, 8424 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) [2024-06-27 23:28:44,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:44,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:28:44,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:45,013 INFO L124 PetriNetUnfolderBase]: 1034/1919 cut-off events. [2024-06-27 23:28:45,014 INFO L125 PetriNetUnfolderBase]: For 1103880/1103880 co-relation queries the response was YES. [2024-06-27 23:28:45,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24272 conditions, 1919 events. 1034/1919 cut-off events. For 1103880/1103880 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 11960 event pairs, 52 based on Foata normal form. 1/1914 useless extension candidates. Maximal degree in co-relation 24007. Up to 1272 conditions per place. [2024-06-27 23:28:45,052 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 386 selfloop transitions, 178 changer transitions 0/568 dead transitions. [2024-06-27 23:28:45,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 568 transitions, 10000 flow [2024-06-27 23:28:45,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:28:45,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:28:45,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 23:28:45,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-27 23:28:45,054 INFO L175 Difference]: Start difference. First operand has 581 places, 557 transitions, 8424 flow. Second operand 10 states and 156 transitions. [2024-06-27 23:28:45,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 568 transitions, 10000 flow [2024-06-27 23:28:51,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 568 transitions, 9836 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-27 23:28:51,247 INFO L231 Difference]: Finished difference. Result has 583 places, 557 transitions, 8621 flow [2024-06-27 23:28:51,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8260, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8621, PETRI_PLACES=583, PETRI_TRANSITIONS=557} [2024-06-27 23:28:51,249 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 552 predicate places. [2024-06-27 23:28:51,249 INFO L495 AbstractCegarLoop]: Abstraction has has 583 places, 557 transitions, 8621 flow [2024-06-27 23:28:51,250 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) [2024-06-27 23:28:51,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:51,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:51,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-27 23:28:51,250 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)] === [2024-06-27 23:28:51,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:51,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1941355013, now seen corresponding path program 11 times [2024-06-27 23:28:51,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:51,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842220630] [2024-06-27 23:28:51,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:51,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:54,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:54,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:54,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842220630] [2024-06-27 23:28:54,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842220630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:54,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:54,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:28:54,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20144141] [2024-06-27 23:28:54,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:54,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:28:54,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:54,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:28:54,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:28:54,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 23:28:54,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 557 transitions, 8621 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:54,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:54,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 23:28:54,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:55,487 INFO L124 PetriNetUnfolderBase]: 1038/1931 cut-off events. [2024-06-27 23:28:55,488 INFO L125 PetriNetUnfolderBase]: For 1138326/1138326 co-relation queries the response was YES. [2024-06-27 23:28:55,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24584 conditions, 1931 events. 1038/1931 cut-off events. For 1138326/1138326 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 12100 event pairs, 101 based on Foata normal form. 2/1931 useless extension candidates. Maximal degree in co-relation 24317. Up to 1741 conditions per place. [2024-06-27 23:28:55,526 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 540 selfloop transitions, 26 changer transitions 0/569 dead transitions. [2024-06-27 23:28:55,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 569 transitions, 9817 flow [2024-06-27 23:28:55,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:28:55,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:28:55,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 23:28:55,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-27 23:28:55,527 INFO L175 Difference]: Start difference. First operand has 583 places, 557 transitions, 8621 flow. Second operand 11 states and 130 transitions. [2024-06-27 23:28:55,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 569 transitions, 9817 flow [2024-06-27 23:29:02,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 569 transitions, 9458 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 23:29:02,020 INFO L231 Difference]: Finished difference. Result has 585 places, 558 transitions, 8360 flow [2024-06-27 23:29:02,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8262, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8360, PETRI_PLACES=585, PETRI_TRANSITIONS=558} [2024-06-27 23:29:02,021 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 554 predicate places. [2024-06-27 23:29:02,021 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 558 transitions, 8360 flow [2024-06-27 23:29:02,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:02,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:02,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:02,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-27 23:29:02,022 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)] === [2024-06-27 23:29:02,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:02,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1329811619, now seen corresponding path program 12 times [2024-06-27 23:29:02,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:02,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188644195] [2024-06-27 23:29:02,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:02,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:04,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:04,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:04,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188644195] [2024-06-27 23:29:04,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188644195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:04,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:04,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:29:04,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889835897] [2024-06-27 23:29:04,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:04,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:29:04,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:04,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:29:04,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:29:04,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:29:04,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 558 transitions, 8360 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) [2024-06-27 23:29:04,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:04,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:29:04,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:05,288 INFO L124 PetriNetUnfolderBase]: 1046/1941 cut-off events. [2024-06-27 23:29:05,289 INFO L125 PetriNetUnfolderBase]: For 1148068/1148068 co-relation queries the response was YES. [2024-06-27 23:29:05,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24718 conditions, 1941 events. 1046/1941 cut-off events. For 1148068/1148068 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 12151 event pairs, 51 based on Foata normal form. 1/1935 useless extension candidates. Maximal degree in co-relation 24450. Up to 1547 conditions per place. [2024-06-27 23:29:05,331 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 466 selfloop transitions, 104 changer transitions 0/574 dead transitions. [2024-06-27 23:29:05,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 574 transitions, 10510 flow [2024-06-27 23:29:05,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:29:05,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:29:05,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-27 23:29:05,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49375 [2024-06-27 23:29:05,333 INFO L175 Difference]: Start difference. First operand has 585 places, 558 transitions, 8360 flow. Second operand 10 states and 158 transitions. [2024-06-27 23:29:05,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 574 transitions, 10510 flow [2024-06-27 23:29:11,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 574 transitions, 10416 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-27 23:29:11,300 INFO L231 Difference]: Finished difference. Result has 585 places, 562 transitions, 8611 flow [2024-06-27 23:29:11,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8266, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8611, PETRI_PLACES=585, PETRI_TRANSITIONS=562} [2024-06-27 23:29:11,300 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 554 predicate places. [2024-06-27 23:29:11,300 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 562 transitions, 8611 flow [2024-06-27 23:29:11,301 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) [2024-06-27 23:29:11,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:11,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:11,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-27 23:29:11,301 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)] === [2024-06-27 23:29:11,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:11,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1329819989, now seen corresponding path program 13 times [2024-06-27 23:29:11,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:11,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366790682] [2024-06-27 23:29:11,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:11,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:13,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:13,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:13,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366790682] [2024-06-27 23:29:13,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366790682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:13,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:13,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:29:13,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850856910] [2024-06-27 23:29:13,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:13,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:29:13,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:13,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:29:13,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:29:13,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:29:13,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 562 transitions, 8611 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) [2024-06-27 23:29:13,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:13,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:29:13,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:14,437 INFO L124 PetriNetUnfolderBase]: 1049/1945 cut-off events. [2024-06-27 23:29:14,437 INFO L125 PetriNetUnfolderBase]: For 1158742/1158742 co-relation queries the response was YES. [2024-06-27 23:29:14,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24931 conditions, 1945 events. 1049/1945 cut-off events. For 1158742/1158742 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 12173 event pairs, 51 based on Foata normal form. 1/1940 useless extension candidates. Maximal degree in co-relation 24665. Up to 1561 conditions per place. [2024-06-27 23:29:14,476 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 470 selfloop transitions, 101 changer transitions 0/575 dead transitions. [2024-06-27 23:29:14,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 575 transitions, 10275 flow [2024-06-27 23:29:14,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:29:14,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:29:14,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 23:29:14,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-27 23:29:14,478 INFO L175 Difference]: Start difference. First operand has 585 places, 562 transitions, 8611 flow. Second operand 10 states and 156 transitions. [2024-06-27 23:29:14,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 575 transitions, 10275 flow [2024-06-27 23:29:20,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 575 transitions, 9882 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-27 23:29:20,166 INFO L231 Difference]: Finished difference. Result has 588 places, 564 transitions, 8497 flow [2024-06-27 23:29:20,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8234, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8497, PETRI_PLACES=588, PETRI_TRANSITIONS=564} [2024-06-27 23:29:20,167 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 557 predicate places. [2024-06-27 23:29:20,167 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 564 transitions, 8497 flow [2024-06-27 23:29:20,167 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) [2024-06-27 23:29:20,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:20,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:20,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-27 23:29:20,167 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)] === [2024-06-27 23:29:20,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:20,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1551695917, now seen corresponding path program 24 times [2024-06-27 23:29:20,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:20,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625535917] [2024-06-27 23:29:20,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:20,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:22,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:22,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:22,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625535917] [2024-06-27 23:29:22,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625535917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:22,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:22,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:29:22,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578440836] [2024-06-27 23:29:22,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:22,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:29:22,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:22,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:29:22,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:29:22,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:29:22,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 564 transitions, 8497 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:22,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:22,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:29:22,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:23,769 INFO L124 PetriNetUnfolderBase]: 1047/1942 cut-off events. [2024-06-27 23:29:23,769 INFO L125 PetriNetUnfolderBase]: For 1135154/1135154 co-relation queries the response was YES. [2024-06-27 23:29:23,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24576 conditions, 1942 events. 1047/1942 cut-off events. For 1135154/1135154 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 12145 event pairs, 61 based on Foata normal form. 1/1937 useless extension candidates. Maximal degree in co-relation 24308. Up to 1567 conditions per place. [2024-06-27 23:29:23,811 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 480 selfloop transitions, 97 changer transitions 0/580 dead transitions. [2024-06-27 23:29:23,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 580 transitions, 10233 flow [2024-06-27 23:29:23,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:29:23,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:29:23,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 153 transitions. [2024-06-27 23:29:23,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-27 23:29:23,813 INFO L175 Difference]: Start difference. First operand has 588 places, 564 transitions, 8497 flow. Second operand 11 states and 153 transitions. [2024-06-27 23:29:23,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 580 transitions, 10233 flow [2024-06-27 23:29:29,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 590 places, 580 transitions, 9996 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 23:29:29,571 INFO L231 Difference]: Finished difference. Result has 593 places, 569 transitions, 8614 flow [2024-06-27 23:29:29,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8262, PETRI_DIFFERENCE_MINUEND_PLACES=580, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8614, PETRI_PLACES=593, PETRI_TRANSITIONS=569} [2024-06-27 23:29:29,572 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 562 predicate places. [2024-06-27 23:29:29,572 INFO L495 AbstractCegarLoop]: Abstraction has has 593 places, 569 transitions, 8614 flow [2024-06-27 23:29:29,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:29,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:29,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:29,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-27 23:29:29,585 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)] === [2024-06-27 23:29:29,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:29,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1558131517, now seen corresponding path program 25 times [2024-06-27 23:29:29,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:29,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133595147] [2024-06-27 23:29:29,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:29,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:31,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:31,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:31,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133595147] [2024-06-27 23:29:31,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133595147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:31,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:31,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:29:31,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116938805] [2024-06-27 23:29:31,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:31,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:29:31,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:31,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:29:31,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:29:31,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 23:29:31,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 569 transitions, 8614 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) [2024-06-27 23:29:31,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:31,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 23:29:31,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:32,050 INFO L124 PetriNetUnfolderBase]: 1045/1941 cut-off events. [2024-06-27 23:29:32,050 INFO L125 PetriNetUnfolderBase]: For 1125057/1125057 co-relation queries the response was YES. [2024-06-27 23:29:32,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24391 conditions, 1941 events. 1045/1941 cut-off events. For 1125057/1125057 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 12178 event pairs, 61 based on Foata normal form. 1/1936 useless extension candidates. Maximal degree in co-relation 24120. Up to 1607 conditions per place. [2024-06-27 23:29:32,088 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 495 selfloop transitions, 80 changer transitions 0/579 dead transitions. [2024-06-27 23:29:32,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 579 transitions, 9786 flow [2024-06-27 23:29:32,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:29:32,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:29:32,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2024-06-27 23:29:32,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-27 23:29:32,092 INFO L175 Difference]: Start difference. First operand has 593 places, 569 transitions, 8614 flow. Second operand 10 states and 145 transitions. [2024-06-27 23:29:32,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 579 transitions, 9786 flow [2024-06-27 23:29:38,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 579 transitions, 9526 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-27 23:29:38,384 INFO L231 Difference]: Finished difference. Result has 597 places, 569 transitions, 8519 flow [2024-06-27 23:29:38,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8354, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8519, PETRI_PLACES=597, PETRI_TRANSITIONS=569} [2024-06-27 23:29:38,384 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 566 predicate places. [2024-06-27 23:29:38,384 INFO L495 AbstractCegarLoop]: Abstraction has has 597 places, 569 transitions, 8519 flow [2024-06-27 23:29:38,384 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) [2024-06-27 23:29:38,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:38,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:38,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-27 23:29:38,385 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)] === [2024-06-27 23:29:38,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:38,385 INFO L85 PathProgramCache]: Analyzing trace with hash 67763815, now seen corresponding path program 26 times [2024-06-27 23:29:38,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:38,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385300584] [2024-06-27 23:29:38,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:38,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:40,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:40,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:40,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385300584] [2024-06-27 23:29:40,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385300584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:40,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:40,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:29:40,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576852745] [2024-06-27 23:29:40,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:40,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:29:40,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:40,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:29:40,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:29:40,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:29:40,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 569 transitions, 8519 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) [2024-06-27 23:29:40,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:40,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:29:40,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:41,483 INFO L124 PetriNetUnfolderBase]: 1053/1959 cut-off events. [2024-06-27 23:29:41,483 INFO L125 PetriNetUnfolderBase]: For 1168041/1168041 co-relation queries the response was YES. [2024-06-27 23:29:41,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24708 conditions, 1959 events. 1053/1959 cut-off events. For 1168041/1168041 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 12293 event pairs, 50 based on Foata normal form. 1/1954 useless extension candidates. Maximal degree in co-relation 24436. Up to 1584 conditions per place. [2024-06-27 23:29:41,525 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 488 selfloop transitions, 94 changer transitions 0/585 dead transitions. [2024-06-27 23:29:41,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 585 transitions, 10702 flow [2024-06-27 23:29:41,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:29:41,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:29:41,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-27 23:29:41,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-27 23:29:41,527 INFO L175 Difference]: Start difference. First operand has 597 places, 569 transitions, 8519 flow. Second operand 11 states and 152 transitions. [2024-06-27 23:29:41,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 585 transitions, 10702 flow [2024-06-27 23:29:47,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 585 transitions, 10451 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 23:29:47,520 INFO L231 Difference]: Finished difference. Result has 598 places, 573 transitions, 8582 flow [2024-06-27 23:29:47,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8270, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8582, PETRI_PLACES=598, PETRI_TRANSITIONS=573} [2024-06-27 23:29:47,520 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 567 predicate places. [2024-06-27 23:29:47,520 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 573 transitions, 8582 flow [2024-06-27 23:29:47,521 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) [2024-06-27 23:29:47,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:47,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:47,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-27 23:29:47,521 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)] === [2024-06-27 23:29:47,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:47,521 INFO L85 PathProgramCache]: Analyzing trace with hash 67770573, now seen corresponding path program 14 times [2024-06-27 23:29:47,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:47,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908628516] [2024-06-27 23:29:47,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:47,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:49,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:49,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:49,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908628516] [2024-06-27 23:29:49,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908628516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:49,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:49,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:29:49,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521343260] [2024-06-27 23:29:49,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:49,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:29:49,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:49,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:29:49,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:29:49,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 23:29:49,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 573 transitions, 8582 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) [2024-06-27 23:29:49,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:49,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 23:29:49,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:50,747 INFO L124 PetriNetUnfolderBase]: 1051/1955 cut-off events. [2024-06-27 23:29:50,747 INFO L125 PetriNetUnfolderBase]: For 1144576/1144576 co-relation queries the response was YES. [2024-06-27 23:29:50,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24393 conditions, 1955 events. 1051/1955 cut-off events. For 1144576/1144576 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 12303 event pairs, 62 based on Foata normal form. 1/1950 useless extension candidates. Maximal degree in co-relation 24120. Up to 1644 conditions per place. [2024-06-27 23:29:50,786 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 509 selfloop transitions, 71 changer transitions 0/583 dead transitions. [2024-06-27 23:29:50,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 583 transitions, 9764 flow [2024-06-27 23:29:50,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:29:50,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:29:50,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-27 23:29:50,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-27 23:29:50,788 INFO L175 Difference]: Start difference. First operand has 598 places, 573 transitions, 8582 flow. Second operand 10 states and 136 transitions. [2024-06-27 23:29:50,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 583 transitions, 9764 flow Killed by 15