./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix031.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/mix031.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix031.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix031.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-eb4cb34-m [2024-06-21 18:49:42,249 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 18:49:42,311 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 18:49:42,315 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 18:49:42,316 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 18:49:42,349 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 18:49:42,350 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 18:49:42,350 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 18:49:42,350 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 18:49:42,353 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 18:49:42,354 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 18:49:42,354 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 18:49:42,354 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 18:49:42,355 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 18:49:42,356 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 18:49:42,356 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 18:49:42,356 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 18:49:42,356 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 18:49:42,356 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 18:49:42,366 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 18:49:42,366 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 18:49:42,366 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 18:49:42,366 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 18:49:42,366 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 18:49:42,366 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 18:49:42,367 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 18:49:42,367 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 18:49:42,367 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 18:49:42,367 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 18:49:42,367 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 18:49:42,367 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 18:49:42,368 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 18:49:42,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 18:49:42,368 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 18:49:42,368 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 18:49:42,368 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 18:49:42,368 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 18:49:42,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 18:49:42,368 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 18:49:42,369 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 18:49:42,369 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 18:49:42,369 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 18:49:42,369 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 18:49:42,369 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 18:49:42,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 18:49:42,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 18:49:42,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 18:49:42,568 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 18:49:42,568 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 18:49:42,569 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix031.opt.i [2024-06-21 18:49:43,599 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 18:49:43,808 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 18:49:43,811 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix031.opt.i [2024-06-21 18:49:43,821 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67f71550b/f531358186454c1bb5ab894fba341def/FLAGe5ad6c3fe [2024-06-21 18:49:43,832 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67f71550b/f531358186454c1bb5ab894fba341def [2024-06-21 18:49:43,833 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 18:49:43,834 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 18:49:43,834 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix031.opt.yml/witness.yml [2024-06-21 18:49:43,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 18:49:43,902 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 18:49:43,903 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 18:49:43,903 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 18:49:43,906 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 18:49:43,907 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 06:49:43" (1/2) ... [2024-06-21 18:49:43,908 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@229d43ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:49:43, skipping insertion in model container [2024-06-21 18:49:43,908 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 06:49:43" (1/2) ... [2024-06-21 18:49:43,909 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1f4e6401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:49:43, skipping insertion in model container [2024-06-21 18:49:43,909 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:49:43" (2/2) ... [2024-06-21 18:49:43,911 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@229d43ea and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:49:43, skipping insertion in model container [2024-06-21 18:49:43,911 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:49:43" (2/2) ... [2024-06-21 18:49:43,911 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 18:49:43,931 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 18:49:43,933 INFO L97 edCorrectnessWitness]: Location invariant before [L827-L827] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )a >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )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 )z >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_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 )a >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EBX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-21 18:49:43,933 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )a >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )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 )z >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_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 )a >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EBX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-21 18:49:43,933 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 18:49:43,933 INFO L106 edCorrectnessWitness]: ghost_update [L824-L824] multithreaded = 1; [2024-06-21 18:49:43,967 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 18:49:44,242 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 18:49:44,253 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 18:49:44,389 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 18:49:44,429 INFO L206 MainTranslator]: Completed translation [2024-06-21 18:49:44,429 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:49:44 WrapperNode [2024-06-21 18:49:44,430 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 18:49:44,431 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 18:49:44,431 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 18:49:44,431 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 18:49:44,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:49:44" (1/1) ... [2024-06-21 18:49:44,460 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:49:44" (1/1) ... [2024-06-21 18:49:44,495 INFO L138 Inliner]: procedures = 174, calls = 42, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 123 [2024-06-21 18:49:44,495 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 18:49:44,496 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 18:49:44,496 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 18:49:44,496 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 18:49:44,504 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:49:44" (1/1) ... [2024-06-21 18:49:44,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:49:44" (1/1) ... [2024-06-21 18:49:44,515 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:49:44" (1/1) ... [2024-06-21 18:49:44,552 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-21 18:49:44,553 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:49:44" (1/1) ... [2024-06-21 18:49:44,553 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:49:44" (1/1) ... [2024-06-21 18:49:44,559 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:49:44" (1/1) ... [2024-06-21 18:49:44,569 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:49:44" (1/1) ... [2024-06-21 18:49:44,571 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:49:44" (1/1) ... [2024-06-21 18:49:44,572 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:49:44" (1/1) ... [2024-06-21 18:49:44,582 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 18:49:44,583 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 18:49:44,583 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 18:49:44,583 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 18:49:44,584 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:49:44" (1/1) ... [2024-06-21 18:49:44,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 18:49:44,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 18:49:44,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-21 18:49:44,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-21 18:49:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 18:49:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 18:49:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 18:49:44,647 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 18:49:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 18:49:44,647 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 18:49:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 18:49:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 18:49:44,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 18:49:44,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 18:49:44,649 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 18:49:44,764 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 18:49:44,765 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 18:49:45,117 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 18:49:45,118 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 18:49:45,233 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 18:49:45,234 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 18:49:45,236 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 06:49:45 BoogieIcfgContainer [2024-06-21 18:49:45,236 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 18:49:45,238 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 18:49:45,238 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 18:49:45,240 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 18:49:45,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 06:49:43" (1/4) ... [2024-06-21 18:49:45,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c11e9f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 06:49:45, skipping insertion in model container [2024-06-21 18:49:45,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:49:43" (2/4) ... [2024-06-21 18:49:45,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c11e9f1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 06:49:45, skipping insertion in model container [2024-06-21 18:49:45,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:49:44" (3/4) ... [2024-06-21 18:49:45,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c11e9f1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 06:49:45, skipping insertion in model container [2024-06-21 18:49:45,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 06:49:45" (4/4) ... [2024-06-21 18:49:45,244 INFO L112 eAbstractionObserver]: Analyzing ICFG mix031.opt.i [2024-06-21 18:49:45,258 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 18:49:45,259 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-21 18:49:45,259 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 18:49:45,306 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 18:49:45,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 33 transitions, 74 flow [2024-06-21 18:49:45,358 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-06-21 18:49:45,358 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 18:49:45,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 0/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 18:49:45,361 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 33 transitions, 74 flow [2024-06-21 18:49:45,364 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 25 transitions, 56 flow [2024-06-21 18:49:45,375 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 18:49:45,381 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;@1dfaefc5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 18:49:45,382 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-21 18:49:45,386 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 18:49:45,386 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-21 18:49:45,386 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 18:49:45,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:49:45,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 18:49:45,387 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:49:45,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:49:45,394 INFO L85 PathProgramCache]: Analyzing trace with hash 332713848, now seen corresponding path program 1 times [2024-06-21 18:49:45,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:49:45,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768987730] [2024-06-21 18:49:45,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:49:45,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:49:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:49:46,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:49:46,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:49:46,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768987730] [2024-06-21 18:49:46,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768987730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:49:46,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:49:46,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 18:49:46,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951102627] [2024-06-21 18:49:46,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:49:46,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 18:49:46,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:49:46,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 18:49:46,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 18:49:46,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 33 [2024-06-21 18:49:46,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:49:46,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:49:46,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 33 [2024-06-21 18:49:46,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:49:46,831 INFO L124 PetriNetUnfolderBase]: 162/326 cut-off events. [2024-06-21 18:49:46,832 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-21 18:49:46,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 637 conditions, 326 events. 162/326 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1351 event pairs, 97 based on Foata normal form. 1/311 useless extension candidates. Maximal degree in co-relation 626. Up to 288 conditions per place. [2024-06-21 18:49:46,838 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 21 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-06-21 18:49:46,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 119 flow [2024-06-21 18:49:46,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 18:49:46,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 18:49:46,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-06-21 18:49:46,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6262626262626263 [2024-06-21 18:49:46,850 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 56 flow. Second operand 3 states and 62 transitions. [2024-06-21 18:49:46,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 119 flow [2024-06-21 18:49:46,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 18:49:46,853 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 75 flow [2024-06-21 18:49:46,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-06-21 18:49:46,857 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2024-06-21 18:49:46,858 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 75 flow [2024-06-21 18:49:46,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:49:46,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:49:46,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:49:46,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 18:49:46,859 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:49:46,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:49:46,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1910456599, now seen corresponding path program 1 times [2024-06-21 18:49:46,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:49:46,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815940963] [2024-06-21 18:49:46,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:49:46,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:49:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:49:47,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:49:47,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:49:47,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815940963] [2024-06-21 18:49:47,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815940963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:49:47,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:49:47,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 18:49:47,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432430396] [2024-06-21 18:49:47,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:49:47,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 18:49:47,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:49:47,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 18:49:47,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 18:49:47,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-06-21 18:49:47,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:49:47,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:49:47,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-06-21 18:49:47,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:49:47,932 INFO L124 PetriNetUnfolderBase]: 186/356 cut-off events. [2024-06-21 18:49:47,932 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-06-21 18:49:47,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 356 events. 186/356 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1455 event pairs, 94 based on Foata normal form. 2/351 useless extension candidates. Maximal degree in co-relation 786. Up to 319 conditions per place. [2024-06-21 18:49:47,934 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 26 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2024-06-21 18:49:47,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 163 flow [2024-06-21 18:49:47,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 18:49:47,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 18:49:47,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-06-21 18:49:47,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-21 18:49:47,936 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 75 flow. Second operand 4 states and 77 transitions. [2024-06-21 18:49:47,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 163 flow [2024-06-21 18:49:47,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 18:49:47,938 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 99 flow [2024-06-21 18:49:47,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-06-21 18:49:47,938 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2024-06-21 18:49:47,938 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 99 flow [2024-06-21 18:49:47,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:49:47,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:49:47,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:49:47,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 18:49:47,939 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:49:47,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:49:47,939 INFO L85 PathProgramCache]: Analyzing trace with hash -905386621, now seen corresponding path program 1 times [2024-06-21 18:49:47,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:49:47,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077301375] [2024-06-21 18:49:47,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:49:47,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:49:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:49:48,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:49:48,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:49:48,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077301375] [2024-06-21 18:49:48,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077301375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:49:48,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:49:48,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:49:48,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485652551] [2024-06-21 18:49:48,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:49:48,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:49:48,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:49:48,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:49:48,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:49:48,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-06-21 18:49:48,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 99 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:49:48,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:49:48,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-06-21 18:49:48,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:49:49,007 INFO L124 PetriNetUnfolderBase]: 219/412 cut-off events. [2024-06-21 18:49:49,008 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2024-06-21 18:49:49,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1018 conditions, 412 events. 219/412 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1622 event pairs, 99 based on Foata normal form. 2/409 useless extension candidates. Maximal degree in co-relation 1004. Up to 366 conditions per place. [2024-06-21 18:49:49,010 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 31 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2024-06-21 18:49:49,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 213 flow [2024-06-21 18:49:49,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:49:49,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:49:49,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-06-21 18:49:49,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-06-21 18:49:49,012 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 99 flow. Second operand 5 states and 90 transitions. [2024-06-21 18:49:49,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 213 flow [2024-06-21 18:49:49,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 204 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-21 18:49:49,014 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 123 flow [2024-06-21 18:49:49,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-21 18:49:49,015 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2024-06-21 18:49:49,015 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 123 flow [2024-06-21 18:49:49,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:49:49,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:49:49,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:49:49,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 18:49:49,016 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)] === [2024-06-21 18:49:49,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:49:49,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1937007300, now seen corresponding path program 1 times [2024-06-21 18:49:49,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:49:49,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198489980] [2024-06-21 18:49:49,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:49:49,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:49:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:49:50,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:49:50,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:49:50,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198489980] [2024-06-21 18:49:50,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198489980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:49:50,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:49:50,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:49:50,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428065458] [2024-06-21 18:49:50,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:49:50,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:49:50,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:49:50,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:49:50,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:49:50,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-06-21 18:49:50,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 123 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 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) [2024-06-21 18:49:50,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:49:50,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-06-21 18:49:50,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:49:50,260 INFO L124 PetriNetUnfolderBase]: 216/409 cut-off events. [2024-06-21 18:49:50,261 INFO L125 PetriNetUnfolderBase]: For 383/383 co-relation queries the response was YES. [2024-06-21 18:49:50,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1099 conditions, 409 events. 216/409 cut-off events. For 383/383 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1632 event pairs, 78 based on Foata normal form. 2/406 useless extension candidates. Maximal degree in co-relation 1084. Up to 352 conditions per place. [2024-06-21 18:49:50,265 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 35 selfloop transitions, 9 changer transitions 0/49 dead transitions. [2024-06-21 18:49:50,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 49 transitions, 261 flow [2024-06-21 18:49:50,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:49:50,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:49:50,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-21 18:49:50,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353535353535354 [2024-06-21 18:49:50,269 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 123 flow. Second operand 6 states and 106 transitions. [2024-06-21 18:49:50,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 49 transitions, 261 flow [2024-06-21 18:49:50,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 49 transitions, 246 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-21 18:49:50,272 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 147 flow [2024-06-21 18:49:50,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=147, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2024-06-21 18:49:50,273 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2024-06-21 18:49:50,273 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 147 flow [2024-06-21 18:49:50,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 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) [2024-06-21 18:49:50,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:49:50,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:49:50,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 18:49:50,274 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:49:50,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:49:50,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1801849858, now seen corresponding path program 1 times [2024-06-21 18:49:50,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:49:50,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071748069] [2024-06-21 18:49:50,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:49:50,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:49:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:49:51,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:49:51,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:49:51,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071748069] [2024-06-21 18:49:51,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071748069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:49:51,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:49:51,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:49:51,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572217326] [2024-06-21 18:49:51,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:49:51,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:49:51,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:49:51,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:49:51,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:49:51,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-06-21 18:49:51,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 147 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:49:51,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:49:51,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-06-21 18:49:51,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:49:51,980 INFO L124 PetriNetUnfolderBase]: 213/403 cut-off events. [2024-06-21 18:49:51,981 INFO L125 PetriNetUnfolderBase]: For 576/576 co-relation queries the response was YES. [2024-06-21 18:49:51,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1167 conditions, 403 events. 213/403 cut-off events. For 576/576 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1579 event pairs, 57 based on Foata normal form. 2/399 useless extension candidates. Maximal degree in co-relation 1151. Up to 338 conditions per place. [2024-06-21 18:49:51,983 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 39 selfloop transitions, 11 changer transitions 0/55 dead transitions. [2024-06-21 18:49:51,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 55 transitions, 309 flow [2024-06-21 18:49:51,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:49:51,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:49:51,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-21 18:49:51,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5281385281385281 [2024-06-21 18:49:51,985 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 147 flow. Second operand 7 states and 122 transitions. [2024-06-21 18:49:51,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 55 transitions, 309 flow [2024-06-21 18:49:51,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 55 transitions, 288 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-21 18:49:51,990 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 171 flow [2024-06-21 18:49:51,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=171, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2024-06-21 18:49:51,992 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 13 predicate places. [2024-06-21 18:49:51,994 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 171 flow [2024-06-21 18:49:51,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:49:51,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:49:51,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:49:51,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 18:49:52,000 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:49:52,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:49:52,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1302825794, now seen corresponding path program 1 times [2024-06-21 18:49:52,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:49:52,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889259912] [2024-06-21 18:49:52,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:49:52,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:49:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:49:52,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:49:52,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:49:52,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889259912] [2024-06-21 18:49:52,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889259912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:49:52,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:49:52,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:49:52,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014269005] [2024-06-21 18:49:52,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:49:52,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:49:52,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:49:52,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:49:52,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:49:52,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-21 18:49:52,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 171 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:49:52,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:49:52,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-21 18:49:52,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:49:52,988 INFO L124 PetriNetUnfolderBase]: 194/383 cut-off events. [2024-06-21 18:49:52,988 INFO L125 PetriNetUnfolderBase]: For 792/792 co-relation queries the response was YES. [2024-06-21 18:49:52,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1181 conditions, 383 events. 194/383 cut-off events. For 792/792 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1549 event pairs, 56 based on Foata normal form. 1/383 useless extension candidates. Maximal degree in co-relation 1163. Up to 341 conditions per place. [2024-06-21 18:49:52,992 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 29 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-21 18:49:52,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 271 flow [2024-06-21 18:49:52,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:49:52,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:49:52,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-06-21 18:49:52,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46060606060606063 [2024-06-21 18:49:52,994 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 171 flow. Second operand 5 states and 76 transitions. [2024-06-21 18:49:52,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 271 flow [2024-06-21 18:49:52,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 242 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-21 18:49:52,996 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 188 flow [2024-06-21 18:49:52,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-06-21 18:49:52,999 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2024-06-21 18:49:52,999 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 188 flow [2024-06-21 18:49:52,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:49:52,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:49:52,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:49:53,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 18:49:53,000 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:49:53,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:49:53,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1748088052, now seen corresponding path program 1 times [2024-06-21 18:49:53,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:49:53,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786183709] [2024-06-21 18:49:53,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:49:53,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:49:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:49:53,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:49:53,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:49:53,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786183709] [2024-06-21 18:49:53,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786183709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:49:53,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:49:53,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:49:53,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855208554] [2024-06-21 18:49:53,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:49:53,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:49:53,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:49:53,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:49:53,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:49:54,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:49:54,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 188 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) [2024-06-21 18:49:54,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:49:54,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:49:54,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:49:54,195 INFO L124 PetriNetUnfolderBase]: 220/413 cut-off events. [2024-06-21 18:49:54,195 INFO L125 PetriNetUnfolderBase]: For 1160/1160 co-relation queries the response was YES. [2024-06-21 18:49:54,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1371 conditions, 413 events. 220/413 cut-off events. For 1160/1160 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1611 event pairs, 65 based on Foata normal form. 1/413 useless extension candidates. Maximal degree in co-relation 1350. Up to 385 conditions per place. [2024-06-21 18:49:54,197 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 31 selfloop transitions, 10 changer transitions 0/46 dead transitions. [2024-06-21 18:49:54,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 290 flow [2024-06-21 18:49:54,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:49:54,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:49:54,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-06-21 18:49:54,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-06-21 18:49:54,199 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 188 flow. Second operand 6 states and 83 transitions. [2024-06-21 18:49:54,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 290 flow [2024-06-21 18:49:54,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 279 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-21 18:49:54,201 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 214 flow [2024-06-21 18:49:54,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2024-06-21 18:49:54,202 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 18 predicate places. [2024-06-21 18:49:54,202 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 214 flow [2024-06-21 18:49:54,202 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) [2024-06-21 18:49:54,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:49:54,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:49:54,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 18:49:54,203 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:49:54,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:49:54,204 INFO L85 PathProgramCache]: Analyzing trace with hash -2122468703, now seen corresponding path program 1 times [2024-06-21 18:49:54,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:49:54,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740752098] [2024-06-21 18:49:54,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:49:54,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:49:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:49:55,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:49:55,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:49:55,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740752098] [2024-06-21 18:49:55,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740752098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:49:55,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:49:55,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:49:55,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890761899] [2024-06-21 18:49:55,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:49:55,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:49:55,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:49:55,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:49:55,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:49:55,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-21 18:49:55,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:49:55,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:49:55,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-21 18:49:55,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:49:55,276 INFO L124 PetriNetUnfolderBase]: 213/412 cut-off events. [2024-06-21 18:49:55,276 INFO L125 PetriNetUnfolderBase]: For 1528/1528 co-relation queries the response was YES. [2024-06-21 18:49:55,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1449 conditions, 412 events. 213/412 cut-off events. For 1528/1528 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1648 event pairs, 62 based on Foata normal form. 1/412 useless extension candidates. Maximal degree in co-relation 1426. Up to 353 conditions per place. [2024-06-21 18:49:55,279 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 33 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2024-06-21 18:49:55,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 350 flow [2024-06-21 18:49:55,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:49:55,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:49:55,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2024-06-21 18:49:55,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-06-21 18:49:55,282 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 214 flow. Second operand 6 states and 91 transitions. [2024-06-21 18:49:55,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 350 flow [2024-06-21 18:49:55,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 329 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-21 18:49:55,286 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 262 flow [2024-06-21 18:49:55,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-21 18:49:55,288 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 21 predicate places. [2024-06-21 18:49:55,288 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 262 flow [2024-06-21 18:49:55,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:49:55,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:49:55,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:49:55,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 18:49:55,289 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:49:55,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:49:55,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1643854433, now seen corresponding path program 2 times [2024-06-21 18:49:55,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:49:55,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421708774] [2024-06-21 18:49:55,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:49:55,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:49:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:49:56,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:49:56,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:49:56,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421708774] [2024-06-21 18:49:56,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421708774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:49:56,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:49:56,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:49:56,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375019814] [2024-06-21 18:49:56,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:49:56,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:49:56,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:49:56,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:49:56,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:49:56,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-21 18:49:56,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:49:56,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:49:56,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-21 18:49:56,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:49:56,491 INFO L124 PetriNetUnfolderBase]: 216/417 cut-off events. [2024-06-21 18:49:56,491 INFO L125 PetriNetUnfolderBase]: For 1933/1933 co-relation queries the response was YES. [2024-06-21 18:49:56,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1572 conditions, 417 events. 216/417 cut-off events. For 1933/1933 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1670 event pairs, 64 based on Foata normal form. 1/417 useless extension candidates. Maximal degree in co-relation 1547. Up to 348 conditions per place. [2024-06-21 18:49:56,494 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 32 selfloop transitions, 18 changer transitions 0/57 dead transitions. [2024-06-21 18:49:56,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 416 flow [2024-06-21 18:49:56,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:49:56,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:49:56,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2024-06-21 18:49:56,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-06-21 18:49:56,495 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 262 flow. Second operand 6 states and 92 transitions. [2024-06-21 18:49:56,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 416 flow [2024-06-21 18:49:56,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 402 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-21 18:49:56,499 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 317 flow [2024-06-21 18:49:56,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=317, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-21 18:49:56,500 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 26 predicate places. [2024-06-21 18:49:56,500 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 317 flow [2024-06-21 18:49:56,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:49:56,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:49:56,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:49:56,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 18:49:56,501 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:49:56,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:49:56,501 INFO L85 PathProgramCache]: Analyzing trace with hash 328815071, now seen corresponding path program 3 times [2024-06-21 18:49:56,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:49:56,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86246876] [2024-06-21 18:49:56,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:49:56,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:49:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:49:57,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:49:57,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:49:57,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86246876] [2024-06-21 18:49:57,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86246876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:49:57,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:49:57,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:49:57,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123915615] [2024-06-21 18:49:57,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:49:57,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:49:57,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:49:57,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:49:57,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:49:57,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-21 18:49:57,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 317 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:49:57,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:49:57,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-21 18:49:57,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:49:57,554 INFO L124 PetriNetUnfolderBase]: 214/414 cut-off events. [2024-06-21 18:49:57,555 INFO L125 PetriNetUnfolderBase]: For 2406/2406 co-relation queries the response was YES. [2024-06-21 18:49:57,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1648 conditions, 414 events. 214/414 cut-off events. For 2406/2406 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1645 event pairs, 61 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 1620. Up to 355 conditions per place. [2024-06-21 18:49:57,558 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 40 selfloop transitions, 13 changer transitions 0/60 dead transitions. [2024-06-21 18:49:57,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 60 transitions, 447 flow [2024-06-21 18:49:57,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:49:57,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:49:57,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2024-06-21 18:49:57,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4458874458874459 [2024-06-21 18:49:57,560 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 317 flow. Second operand 7 states and 103 transitions. [2024-06-21 18:49:57,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 60 transitions, 447 flow [2024-06-21 18:49:57,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 424 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-21 18:49:57,563 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 325 flow [2024-06-21 18:49:57,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=325, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2024-06-21 18:49:57,564 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 31 predicate places. [2024-06-21 18:49:57,565 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 325 flow [2024-06-21 18:49:57,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:49:57,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:49:57,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:49:57,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 18:49:57,565 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)] === [2024-06-21 18:49:57,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:49:57,566 INFO L85 PathProgramCache]: Analyzing trace with hash 705926785, now seen corresponding path program 1 times [2024-06-21 18:49:57,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:49:57,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500254313] [2024-06-21 18:49:57,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:49:57,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:49:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:49:59,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:49:59,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:49:59,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500254313] [2024-06-21 18:49:59,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500254313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:49:59,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:49:59,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:49:59,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576959792] [2024-06-21 18:49:59,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:49:59,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:49:59,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:49:59,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:49:59,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:49:59,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-06-21 18:49:59,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 325 flow. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:49:59,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:49:59,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-06-21 18:49:59,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:49:59,287 INFO L124 PetriNetUnfolderBase]: 228/424 cut-off events. [2024-06-21 18:49:59,287 INFO L125 PetriNetUnfolderBase]: For 2833/2833 co-relation queries the response was YES. [2024-06-21 18:49:59,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1720 conditions, 424 events. 228/424 cut-off events. For 2833/2833 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1602 event pairs, 39 based on Foata normal form. 4/427 useless extension candidates. Maximal degree in co-relation 1691. Up to 331 conditions per place. [2024-06-21 18:49:59,290 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 48 selfloop transitions, 16 changer transitions 0/70 dead transitions. [2024-06-21 18:49:59,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 70 transitions, 497 flow [2024-06-21 18:49:59,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:49:59,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:49:59,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-21 18:49:59,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037878787878788 [2024-06-21 18:49:59,291 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 325 flow. Second operand 8 states and 133 transitions. [2024-06-21 18:49:59,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 70 transitions, 497 flow [2024-06-21 18:49:59,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 70 transitions, 460 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-21 18:49:59,295 INFO L231 Difference]: Finished difference. Result has 65 places, 50 transitions, 312 flow [2024-06-21 18:49:59,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=312, PETRI_PLACES=65, PETRI_TRANSITIONS=50} [2024-06-21 18:49:59,296 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 33 predicate places. [2024-06-21 18:49:59,296 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 50 transitions, 312 flow [2024-06-21 18:49:59,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:49:59,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:49:59,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:49:59,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 18:49:59,297 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:49:59,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:49:59,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1643844513, now seen corresponding path program 1 times [2024-06-21 18:49:59,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:49:59,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697043157] [2024-06-21 18:49:59,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:49:59,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:49:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:00,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:00,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697043157] [2024-06-21 18:50:00,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697043157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:00,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:00,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:50:00,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667388087] [2024-06-21 18:50:00,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:00,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:50:00,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:00,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:50:00,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:50:00,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:00,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 50 transitions, 312 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) [2024-06-21 18:50:00,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:00,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:00,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:00,576 INFO L124 PetriNetUnfolderBase]: 223/418 cut-off events. [2024-06-21 18:50:00,576 INFO L125 PetriNetUnfolderBase]: For 3170/3170 co-relation queries the response was YES. [2024-06-21 18:50:00,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1755 conditions, 418 events. 223/418 cut-off events. For 3170/3170 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1607 event pairs, 60 based on Foata normal form. 1/418 useless extension candidates. Maximal degree in co-relation 1725. Up to 385 conditions per place. [2024-06-21 18:50:00,580 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 41 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2024-06-21 18:50:00,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 58 transitions, 442 flow [2024-06-21 18:50:00,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:50:00,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:50:00,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-21 18:50:00,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2024-06-21 18:50:00,582 INFO L175 Difference]: Start difference. First operand has 65 places, 50 transitions, 312 flow. Second operand 7 states and 93 transitions. [2024-06-21 18:50:00,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 58 transitions, 442 flow [2024-06-21 18:50:00,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 58 transitions, 402 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-21 18:50:00,587 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 315 flow [2024-06-21 18:50:00,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=315, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2024-06-21 18:50:00,588 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 34 predicate places. [2024-06-21 18:50:00,588 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 315 flow [2024-06-21 18:50:00,588 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) [2024-06-21 18:50:00,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:00,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:00,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 18:50:00,589 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:00,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:00,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1316081413, now seen corresponding path program 1 times [2024-06-21 18:50:00,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:00,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16368869] [2024-06-21 18:50:00,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:00,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:01,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:01,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:01,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16368869] [2024-06-21 18:50:01,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16368869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:01,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:01,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:50:01,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953382221] [2024-06-21 18:50:01,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:01,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:50:01,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:01,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:50:01,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:50:01,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:01,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 315 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) [2024-06-21 18:50:01,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:01,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:01,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:01,832 INFO L124 PetriNetUnfolderBase]: 233/434 cut-off events. [2024-06-21 18:50:01,832 INFO L125 PetriNetUnfolderBase]: For 3731/3731 co-relation queries the response was YES. [2024-06-21 18:50:01,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1843 conditions, 434 events. 233/434 cut-off events. For 3731/3731 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1674 event pairs, 58 based on Foata normal form. 1/434 useless extension candidates. Maximal degree in co-relation 1811. Up to 371 conditions per place. [2024-06-21 18:50:01,835 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 44 selfloop transitions, 17 changer transitions 0/66 dead transitions. [2024-06-21 18:50:01,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 491 flow [2024-06-21 18:50:01,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:50:01,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:50:01,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-06-21 18:50:01,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-21 18:50:01,836 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 315 flow. Second operand 7 states and 99 transitions. [2024-06-21 18:50:01,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 491 flow [2024-06-21 18:50:01,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 66 transitions, 464 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-21 18:50:01,840 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 370 flow [2024-06-21 18:50:01,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=370, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2024-06-21 18:50:01,840 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 37 predicate places. [2024-06-21 18:50:01,840 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 370 flow [2024-06-21 18:50:01,840 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) [2024-06-21 18:50:01,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:01,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:01,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 18:50:01,841 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:01,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:01,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1315901923, now seen corresponding path program 2 times [2024-06-21 18:50:01,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:01,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342827214] [2024-06-21 18:50:01,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:01,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:02,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:02,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:02,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342827214] [2024-06-21 18:50:02,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342827214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:02,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:02,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:50:02,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806839435] [2024-06-21 18:50:02,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:02,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:50:02,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:02,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:50:02,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:50:02,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:02,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 370 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) [2024-06-21 18:50:02,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:02,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:02,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:03,036 INFO L124 PetriNetUnfolderBase]: 236/439 cut-off events. [2024-06-21 18:50:03,036 INFO L125 PetriNetUnfolderBase]: For 4332/4332 co-relation queries the response was YES. [2024-06-21 18:50:03,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1966 conditions, 439 events. 236/439 cut-off events. For 4332/4332 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1689 event pairs, 58 based on Foata normal form. 1/439 useless extension candidates. Maximal degree in co-relation 1932. Up to 370 conditions per place. [2024-06-21 18:50:03,039 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 42 selfloop transitions, 20 changer transitions 0/67 dead transitions. [2024-06-21 18:50:03,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 67 transitions, 528 flow [2024-06-21 18:50:03,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:50:03,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:50:03,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 100 transitions. [2024-06-21 18:50:03,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329004329004329 [2024-06-21 18:50:03,040 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 370 flow. Second operand 7 states and 100 transitions. [2024-06-21 18:50:03,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 67 transitions, 528 flow [2024-06-21 18:50:03,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 67 transitions, 503 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-21 18:50:03,046 INFO L231 Difference]: Finished difference. Result has 74 places, 60 transitions, 410 flow [2024-06-21 18:50:03,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=410, PETRI_PLACES=74, PETRI_TRANSITIONS=60} [2024-06-21 18:50:03,047 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2024-06-21 18:50:03,047 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 60 transitions, 410 flow [2024-06-21 18:50:03,047 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) [2024-06-21 18:50:03,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:03,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:03,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 18:50:03,047 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:03,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:03,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1315901675, now seen corresponding path program 1 times [2024-06-21 18:50:03,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:03,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075278261] [2024-06-21 18:50:03,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:03,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:04,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:04,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:04,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075278261] [2024-06-21 18:50:04,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075278261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:04,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:04,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:50:04,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831817216] [2024-06-21 18:50:04,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:04,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:50:04,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:04,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:50:04,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:50:04,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:04,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 60 transitions, 410 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) [2024-06-21 18:50:04,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:04,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:04,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:04,346 INFO L124 PetriNetUnfolderBase]: 241/445 cut-off events. [2024-06-21 18:50:04,346 INFO L125 PetriNetUnfolderBase]: For 4894/4894 co-relation queries the response was YES. [2024-06-21 18:50:04,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2050 conditions, 445 events. 241/445 cut-off events. For 4894/4894 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1701 event pairs, 58 based on Foata normal form. 1/445 useless extension candidates. Maximal degree in co-relation 2014. Up to 393 conditions per place. [2024-06-21 18:50:04,349 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 45 selfloop transitions, 15 changer transitions 0/69 dead transitions. [2024-06-21 18:50:04,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 69 transitions, 560 flow [2024-06-21 18:50:04,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:50:04,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:50:04,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-21 18:50:04,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4155844155844156 [2024-06-21 18:50:04,350 INFO L175 Difference]: Start difference. First operand has 74 places, 60 transitions, 410 flow. Second operand 7 states and 96 transitions. [2024-06-21 18:50:04,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 69 transitions, 560 flow [2024-06-21 18:50:04,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 69 transitions, 511 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-21 18:50:04,355 INFO L231 Difference]: Finished difference. Result has 76 places, 62 transitions, 412 flow [2024-06-21 18:50:04,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=412, PETRI_PLACES=76, PETRI_TRANSITIONS=62} [2024-06-21 18:50:04,356 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 44 predicate places. [2024-06-21 18:50:04,356 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 62 transitions, 412 flow [2024-06-21 18:50:04,356 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) [2024-06-21 18:50:04,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:04,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:04,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 18:50:04,356 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:04,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:04,357 INFO L85 PathProgramCache]: Analyzing trace with hash -838410845, now seen corresponding path program 2 times [2024-06-21 18:50:04,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:04,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555903421] [2024-06-21 18:50:04,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:04,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:05,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:05,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:05,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555903421] [2024-06-21 18:50:05,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555903421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:05,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:05,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:50:05,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701215839] [2024-06-21 18:50:05,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:05,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:50:05,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:05,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:50:05,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:50:05,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:05,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 62 transitions, 412 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) [2024-06-21 18:50:05,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:05,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:05,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:05,642 INFO L124 PetriNetUnfolderBase]: 244/451 cut-off events. [2024-06-21 18:50:05,642 INFO L125 PetriNetUnfolderBase]: For 5558/5558 co-relation queries the response was YES. [2024-06-21 18:50:05,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2140 conditions, 451 events. 244/451 cut-off events. For 5558/5558 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1738 event pairs, 60 based on Foata normal form. 1/451 useless extension candidates. Maximal degree in co-relation 2103. Up to 377 conditions per place. [2024-06-21 18:50:05,645 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 39 selfloop transitions, 25 changer transitions 0/73 dead transitions. [2024-06-21 18:50:05,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 73 transitions, 618 flow [2024-06-21 18:50:05,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:50:05,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:50:05,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-21 18:50:05,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-21 18:50:05,646 INFO L175 Difference]: Start difference. First operand has 76 places, 62 transitions, 412 flow. Second operand 7 states and 98 transitions. [2024-06-21 18:50:05,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 73 transitions, 618 flow [2024-06-21 18:50:05,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 73 transitions, 583 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-21 18:50:05,651 INFO L231 Difference]: Finished difference. Result has 78 places, 66 transitions, 468 flow [2024-06-21 18:50:05,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=468, PETRI_PLACES=78, PETRI_TRANSITIONS=66} [2024-06-21 18:50:05,651 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 46 predicate places. [2024-06-21 18:50:05,652 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 66 transitions, 468 flow [2024-06-21 18:50:05,652 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) [2024-06-21 18:50:05,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:05,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:05,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 18:50:05,652 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:05,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:05,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1135844301, now seen corresponding path program 3 times [2024-06-21 18:50:05,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:05,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279041452] [2024-06-21 18:50:05,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:05,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:06,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:06,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:06,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279041452] [2024-06-21 18:50:06,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279041452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:06,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:06,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:50:06,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076230704] [2024-06-21 18:50:06,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:06,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:50:06,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:06,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:50:06,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:50:06,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:06,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 66 transitions, 468 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) [2024-06-21 18:50:06,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:06,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:06,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:07,053 INFO L124 PetriNetUnfolderBase]: 247/456 cut-off events. [2024-06-21 18:50:07,054 INFO L125 PetriNetUnfolderBase]: For 6355/6355 co-relation queries the response was YES. [2024-06-21 18:50:07,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2261 conditions, 456 events. 247/456 cut-off events. For 6355/6355 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1753 event pairs, 60 based on Foata normal form. 1/456 useless extension candidates. Maximal degree in co-relation 2223. Up to 381 conditions per place. [2024-06-21 18:50:07,057 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 41 selfloop transitions, 25 changer transitions 0/75 dead transitions. [2024-06-21 18:50:07,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 75 transitions, 668 flow [2024-06-21 18:50:07,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:50:07,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:50:07,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-21 18:50:07,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4053030303030303 [2024-06-21 18:50:07,059 INFO L175 Difference]: Start difference. First operand has 78 places, 66 transitions, 468 flow. Second operand 8 states and 107 transitions. [2024-06-21 18:50:07,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 75 transitions, 668 flow [2024-06-21 18:50:07,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 75 transitions, 629 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-21 18:50:07,065 INFO L231 Difference]: Finished difference. Result has 83 places, 68 transitions, 504 flow [2024-06-21 18:50:07,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=504, PETRI_PLACES=83, PETRI_TRANSITIONS=68} [2024-06-21 18:50:07,066 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 51 predicate places. [2024-06-21 18:50:07,066 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 68 transitions, 504 flow [2024-06-21 18:50:07,066 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) [2024-06-21 18:50:07,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:07,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:07,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 18:50:07,067 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:07,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:07,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1135844549, now seen corresponding path program 3 times [2024-06-21 18:50:07,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:07,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208119219] [2024-06-21 18:50:07,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:07,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:08,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:08,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:08,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208119219] [2024-06-21 18:50:08,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208119219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:08,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:08,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:50:08,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406547069] [2024-06-21 18:50:08,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:08,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:50:08,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:08,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:50:08,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:50:08,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:08,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 68 transitions, 504 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) [2024-06-21 18:50:08,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:08,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:08,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:08,344 INFO L124 PetriNetUnfolderBase]: 250/462 cut-off events. [2024-06-21 18:50:08,344 INFO L125 PetriNetUnfolderBase]: For 7310/7310 co-relation queries the response was YES. [2024-06-21 18:50:08,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2385 conditions, 462 events. 250/462 cut-off events. For 7310/7310 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1774 event pairs, 61 based on Foata normal form. 1/462 useless extension candidates. Maximal degree in co-relation 2345. Up to 368 conditions per place. [2024-06-21 18:50:08,348 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 43 selfloop transitions, 27 changer transitions 0/79 dead transitions. [2024-06-21 18:50:08,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 79 transitions, 734 flow [2024-06-21 18:50:08,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:50:08,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:50:08,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 100 transitions. [2024-06-21 18:50:08,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329004329004329 [2024-06-21 18:50:08,349 INFO L175 Difference]: Start difference. First operand has 83 places, 68 transitions, 504 flow. Second operand 7 states and 100 transitions. [2024-06-21 18:50:08,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 79 transitions, 734 flow [2024-06-21 18:50:08,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 79 transitions, 689 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-21 18:50:08,354 INFO L231 Difference]: Finished difference. Result has 85 places, 72 transitions, 562 flow [2024-06-21 18:50:08,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=562, PETRI_PLACES=85, PETRI_TRANSITIONS=72} [2024-06-21 18:50:08,355 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 53 predicate places. [2024-06-21 18:50:08,355 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 72 transitions, 562 flow [2024-06-21 18:50:08,355 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) [2024-06-21 18:50:08,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:08,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:08,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 18:50:08,355 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:08,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:08,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1124416889, now seen corresponding path program 4 times [2024-06-21 18:50:08,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:08,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600231777] [2024-06-21 18:50:08,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:08,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:09,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:09,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:09,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600231777] [2024-06-21 18:50:09,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600231777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:09,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:09,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:50:09,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015577168] [2024-06-21 18:50:09,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:09,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:50:09,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:09,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:50:09,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:50:09,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:09,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 72 transitions, 562 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) [2024-06-21 18:50:09,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:09,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:09,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:09,336 INFO L124 PetriNetUnfolderBase]: 257/473 cut-off events. [2024-06-21 18:50:09,336 INFO L125 PetriNetUnfolderBase]: For 8199/8199 co-relation queries the response was YES. [2024-06-21 18:50:09,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2522 conditions, 473 events. 257/473 cut-off events. For 8199/8199 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1824 event pairs, 55 based on Foata normal form. 1/473 useless extension candidates. Maximal degree in co-relation 2481. Up to 402 conditions per place. [2024-06-21 18:50:09,339 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 60 selfloop transitions, 19 changer transitions 0/88 dead transitions. [2024-06-21 18:50:09,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 88 transitions, 792 flow [2024-06-21 18:50:09,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:50:09,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:50:09,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2024-06-21 18:50:09,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-06-21 18:50:09,340 INFO L175 Difference]: Start difference. First operand has 85 places, 72 transitions, 562 flow. Second operand 7 states and 102 transitions. [2024-06-21 18:50:09,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 88 transitions, 792 flow [2024-06-21 18:50:09,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 88 transitions, 754 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-21 18:50:09,347 INFO L231 Difference]: Finished difference. Result has 89 places, 76 transitions, 611 flow [2024-06-21 18:50:09,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=611, PETRI_PLACES=89, PETRI_TRANSITIONS=76} [2024-06-21 18:50:09,348 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 57 predicate places. [2024-06-21 18:50:09,348 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 76 transitions, 611 flow [2024-06-21 18:50:09,348 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) [2024-06-21 18:50:09,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:09,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:09,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 18:50:09,348 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:09,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:09,348 INFO L85 PathProgramCache]: Analyzing trace with hash 284663799, now seen corresponding path program 5 times [2024-06-21 18:50:09,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:09,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135334504] [2024-06-21 18:50:09,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:09,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:10,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:10,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:10,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135334504] [2024-06-21 18:50:10,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135334504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:10,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:10,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:50:10,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270087145] [2024-06-21 18:50:10,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:10,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:50:10,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:10,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:50:10,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:50:10,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:10,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 76 transitions, 611 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) [2024-06-21 18:50:10,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:10,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:10,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:10,522 INFO L124 PetriNetUnfolderBase]: 260/478 cut-off events. [2024-06-21 18:50:10,529 INFO L125 PetriNetUnfolderBase]: For 9097/9097 co-relation queries the response was YES. [2024-06-21 18:50:10,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2632 conditions, 478 events. 260/478 cut-off events. For 9097/9097 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1844 event pairs, 55 based on Foata normal form. 1/478 useless extension candidates. Maximal degree in co-relation 2590. Up to 407 conditions per place. [2024-06-21 18:50:10,535 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 61 selfloop transitions, 19 changer transitions 0/89 dead transitions. [2024-06-21 18:50:10,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 89 transitions, 829 flow [2024-06-21 18:50:10,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:50:10,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:50:10,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-21 18:50:10,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 18:50:10,536 INFO L175 Difference]: Start difference. First operand has 89 places, 76 transitions, 611 flow. Second operand 8 states and 110 transitions. [2024-06-21 18:50:10,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 89 transitions, 829 flow [2024-06-21 18:50:10,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 89 transitions, 774 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-21 18:50:10,544 INFO L231 Difference]: Finished difference. Result has 92 places, 78 transitions, 631 flow [2024-06-21 18:50:10,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=631, PETRI_PLACES=92, PETRI_TRANSITIONS=78} [2024-06-21 18:50:10,544 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 60 predicate places. [2024-06-21 18:50:10,545 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 78 transitions, 631 flow [2024-06-21 18:50:10,545 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) [2024-06-21 18:50:10,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:10,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:10,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 18:50:10,545 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:10,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:10,546 INFO L85 PathProgramCache]: Analyzing trace with hash 284843289, now seen corresponding path program 6 times [2024-06-21 18:50:10,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:10,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137004851] [2024-06-21 18:50:10,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:10,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:11,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:11,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:11,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137004851] [2024-06-21 18:50:11,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137004851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:11,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:11,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:50:11,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688033768] [2024-06-21 18:50:11,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:11,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:50:11,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:11,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:50:11,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:50:11,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:11,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 78 transitions, 631 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) [2024-06-21 18:50:11,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:11,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:11,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:11,705 INFO L124 PetriNetUnfolderBase]: 258/475 cut-off events. [2024-06-21 18:50:11,705 INFO L125 PetriNetUnfolderBase]: For 9813/9813 co-relation queries the response was YES. [2024-06-21 18:50:11,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2626 conditions, 475 events. 258/475 cut-off events. For 9813/9813 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1827 event pairs, 57 based on Foata normal form. 1/475 useless extension candidates. Maximal degree in co-relation 2583. Up to 395 conditions per place. [2024-06-21 18:50:11,712 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 55 selfloop transitions, 24 changer transitions 0/88 dead transitions. [2024-06-21 18:50:11,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 88 transitions, 815 flow [2024-06-21 18:50:11,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:50:11,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:50:11,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-21 18:50:11,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 18:50:11,716 INFO L175 Difference]: Start difference. First operand has 92 places, 78 transitions, 631 flow. Second operand 8 states and 110 transitions. [2024-06-21 18:50:11,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 88 transitions, 815 flow [2024-06-21 18:50:11,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 88 transitions, 759 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-21 18:50:11,726 INFO L231 Difference]: Finished difference. Result has 95 places, 78 transitions, 628 flow [2024-06-21 18:50:11,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=628, PETRI_PLACES=95, PETRI_TRANSITIONS=78} [2024-06-21 18:50:11,726 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 63 predicate places. [2024-06-21 18:50:11,726 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 78 transitions, 628 flow [2024-06-21 18:50:11,726 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) [2024-06-21 18:50:11,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:11,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:11,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 18:50:11,727 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:11,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:11,727 INFO L85 PathProgramCache]: Analyzing trace with hash 300036947, now seen corresponding path program 4 times [2024-06-21 18:50:11,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:11,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854424362] [2024-06-21 18:50:11,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:11,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:12,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:12,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:12,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854424362] [2024-06-21 18:50:12,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854424362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:12,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:12,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:50:12,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519361767] [2024-06-21 18:50:12,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:12,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:50:12,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:12,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:50:12,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:50:12,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:12,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 78 transitions, 628 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) [2024-06-21 18:50:12,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:12,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:12,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:12,963 INFO L124 PetriNetUnfolderBase]: 253/469 cut-off events. [2024-06-21 18:50:12,963 INFO L125 PetriNetUnfolderBase]: For 10167/10167 co-relation queries the response was YES. [2024-06-21 18:50:12,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2580 conditions, 469 events. 253/469 cut-off events. For 10167/10167 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1841 event pairs, 58 based on Foata normal form. 1/469 useless extension candidates. Maximal degree in co-relation 2536. Up to 411 conditions per place. [2024-06-21 18:50:12,966 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 59 selfloop transitions, 15 changer transitions 0/88 dead transitions. [2024-06-21 18:50:12,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 88 transitions, 802 flow [2024-06-21 18:50:12,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:50:12,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:50:12,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-21 18:50:12,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4053030303030303 [2024-06-21 18:50:12,968 INFO L175 Difference]: Start difference. First operand has 95 places, 78 transitions, 628 flow. Second operand 8 states and 107 transitions. [2024-06-21 18:50:12,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 88 transitions, 802 flow [2024-06-21 18:50:12,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 88 transitions, 711 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-21 18:50:12,976 INFO L231 Difference]: Finished difference. Result has 96 places, 78 transitions, 572 flow [2024-06-21 18:50:12,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=572, PETRI_PLACES=96, PETRI_TRANSITIONS=78} [2024-06-21 18:50:12,977 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 64 predicate places. [2024-06-21 18:50:12,977 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 78 transitions, 572 flow [2024-06-21 18:50:12,977 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) [2024-06-21 18:50:12,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:12,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:12,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 18:50:12,978 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:12,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:12,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1135536719, now seen corresponding path program 1 times [2024-06-21 18:50:12,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:12,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844586032] [2024-06-21 18:50:12,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:12,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:14,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:14,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:14,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844586032] [2024-06-21 18:50:14,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844586032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:14,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:14,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:50:14,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37753871] [2024-06-21 18:50:14,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:14,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:50:14,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:14,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:50:14,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:50:14,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:14,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 78 transitions, 572 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:14,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:14,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:14,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:14,518 INFO L124 PetriNetUnfolderBase]: 249/464 cut-off events. [2024-06-21 18:50:14,518 INFO L125 PetriNetUnfolderBase]: For 10764/10764 co-relation queries the response was YES. [2024-06-21 18:50:14,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2536 conditions, 464 events. 249/464 cut-off events. For 10764/10764 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1825 event pairs, 63 based on Foata normal form. 1/464 useless extension candidates. Maximal degree in co-relation 2491. Up to 413 conditions per place. [2024-06-21 18:50:14,522 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 59 selfloop transitions, 14 changer transitions 0/87 dead transitions. [2024-06-21 18:50:14,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 87 transitions, 746 flow [2024-06-21 18:50:14,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:50:14,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:50:14,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-21 18:50:14,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-21 18:50:14,523 INFO L175 Difference]: Start difference. First operand has 96 places, 78 transitions, 572 flow. Second operand 8 states and 104 transitions. [2024-06-21 18:50:14,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 87 transitions, 746 flow [2024-06-21 18:50:14,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 87 transitions, 689 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-21 18:50:14,532 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 564 flow [2024-06-21 18:50:14,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=564, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2024-06-21 18:50:14,532 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 64 predicate places. [2024-06-21 18:50:14,532 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 564 flow [2024-06-21 18:50:14,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:14,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:14,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:14,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 18:50:14,533 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:14,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:14,533 INFO L85 PathProgramCache]: Analyzing trace with hash 411342336, now seen corresponding path program 1 times [2024-06-21 18:50:14,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:14,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183231199] [2024-06-21 18:50:14,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:14,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:15,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:15,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:15,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183231199] [2024-06-21 18:50:15,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183231199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:15,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:15,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:50:15,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611327356] [2024-06-21 18:50:15,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:15,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:50:15,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:15,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:50:15,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:50:15,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:15,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 564 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:15,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:15,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:15,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:15,920 INFO L124 PetriNetUnfolderBase]: 261/482 cut-off events. [2024-06-21 18:50:15,921 INFO L125 PetriNetUnfolderBase]: For 11821/11821 co-relation queries the response was YES. [2024-06-21 18:50:15,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2699 conditions, 482 events. 261/482 cut-off events. For 11821/11821 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1899 event pairs, 58 based on Foata normal form. 1/482 useless extension candidates. Maximal degree in co-relation 2653. Up to 394 conditions per place. [2024-06-21 18:50:15,924 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 65 selfloop transitions, 22 changer transitions 0/96 dead transitions. [2024-06-21 18:50:15,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 96 transitions, 804 flow [2024-06-21 18:50:15,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:50:15,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:50:15,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-21 18:50:15,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42803030303030304 [2024-06-21 18:50:15,926 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 564 flow. Second operand 8 states and 113 transitions. [2024-06-21 18:50:15,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 96 transitions, 804 flow [2024-06-21 18:50:15,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 96 transitions, 771 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-21 18:50:15,936 INFO L231 Difference]: Finished difference. Result has 99 places, 86 transitions, 630 flow [2024-06-21 18:50:15,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=630, PETRI_PLACES=99, PETRI_TRANSITIONS=86} [2024-06-21 18:50:15,936 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 67 predicate places. [2024-06-21 18:50:15,936 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 86 transitions, 630 flow [2024-06-21 18:50:15,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:15,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:15,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:15,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 18:50:15,937 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:15,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:15,937 INFO L85 PathProgramCache]: Analyzing trace with hash -2138455067, now seen corresponding path program 1 times [2024-06-21 18:50:15,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:15,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814578211] [2024-06-21 18:50:15,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:15,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:16,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:16,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814578211] [2024-06-21 18:50:16,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814578211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:16,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:16,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:50:16,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828449690] [2024-06-21 18:50:16,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:16,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:50:16,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:16,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:50:16,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:50:17,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:50:17,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 86 transitions, 630 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) [2024-06-21 18:50:17,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:17,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:50:17,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:17,267 INFO L124 PetriNetUnfolderBase]: 279/501 cut-off events. [2024-06-21 18:50:17,267 INFO L125 PetriNetUnfolderBase]: For 12693/12693 co-relation queries the response was YES. [2024-06-21 18:50:17,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2890 conditions, 501 events. 279/501 cut-off events. For 12693/12693 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1941 event pairs, 58 based on Foata normal form. 1/501 useless extension candidates. Maximal degree in co-relation 2842. Up to 453 conditions per place. [2024-06-21 18:50:17,271 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 73 selfloop transitions, 21 changer transitions 0/97 dead transitions. [2024-06-21 18:50:17,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 97 transitions, 860 flow [2024-06-21 18:50:17,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:50:17,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:50:17,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-21 18:50:17,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39015151515151514 [2024-06-21 18:50:17,273 INFO L175 Difference]: Start difference. First operand has 99 places, 86 transitions, 630 flow. Second operand 8 states and 103 transitions. [2024-06-21 18:50:17,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 97 transitions, 860 flow [2024-06-21 18:50:17,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 97 transitions, 823 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-21 18:50:17,283 INFO L231 Difference]: Finished difference. Result has 104 places, 88 transitions, 662 flow [2024-06-21 18:50:17,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=662, PETRI_PLACES=104, PETRI_TRANSITIONS=88} [2024-06-21 18:50:17,284 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 72 predicate places. [2024-06-21 18:50:17,284 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 88 transitions, 662 flow [2024-06-21 18:50:17,284 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) [2024-06-21 18:50:17,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:17,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:17,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 18:50:17,284 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:17,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:17,285 INFO L85 PathProgramCache]: Analyzing trace with hash -312897088, now seen corresponding path program 2 times [2024-06-21 18:50:17,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:17,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420049760] [2024-06-21 18:50:17,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:17,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:18,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:18,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:18,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420049760] [2024-06-21 18:50:18,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420049760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:18,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:18,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:50:18,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395278355] [2024-06-21 18:50:18,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:18,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:50:18,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:18,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:50:18,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:50:18,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:18,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 88 transitions, 662 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:18,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:18,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:18,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:18,657 INFO L124 PetriNetUnfolderBase]: 269/494 cut-off events. [2024-06-21 18:50:18,658 INFO L125 PetriNetUnfolderBase]: For 14037/14037 co-relation queries the response was YES. [2024-06-21 18:50:18,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2932 conditions, 494 events. 269/494 cut-off events. For 14037/14037 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1948 event pairs, 57 based on Foata normal form. 1/494 useless extension candidates. Maximal degree in co-relation 2882. Up to 398 conditions per place. [2024-06-21 18:50:18,663 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 64 selfloop transitions, 25 changer transitions 0/99 dead transitions. [2024-06-21 18:50:18,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 99 transitions, 886 flow [2024-06-21 18:50:18,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:50:18,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:50:18,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-21 18:50:18,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107744107744108 [2024-06-21 18:50:18,665 INFO L175 Difference]: Start difference. First operand has 104 places, 88 transitions, 662 flow. Second operand 9 states and 122 transitions. [2024-06-21 18:50:18,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 99 transitions, 886 flow [2024-06-21 18:50:18,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 99 transitions, 833 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-21 18:50:18,676 INFO L231 Difference]: Finished difference. Result has 107 places, 90 transitions, 690 flow [2024-06-21 18:50:18,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=690, PETRI_PLACES=107, PETRI_TRANSITIONS=90} [2024-06-21 18:50:18,677 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 75 predicate places. [2024-06-21 18:50:18,677 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 90 transitions, 690 flow [2024-06-21 18:50:18,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:18,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:18,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:18,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 18:50:18,677 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:18,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:18,678 INFO L85 PathProgramCache]: Analyzing trace with hash 417063913, now seen corresponding path program 2 times [2024-06-21 18:50:18,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:18,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988320583] [2024-06-21 18:50:18,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:18,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:19,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:19,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:19,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988320583] [2024-06-21 18:50:19,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988320583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:19,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:19,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:50:19,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132537527] [2024-06-21 18:50:19,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:19,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:50:19,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:19,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:50:19,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:50:19,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:50:19,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 90 transitions, 690 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) [2024-06-21 18:50:19,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:19,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:50:19,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:20,025 INFO L124 PetriNetUnfolderBase]: 290/519 cut-off events. [2024-06-21 18:50:20,025 INFO L125 PetriNetUnfolderBase]: For 15390/15390 co-relation queries the response was YES. [2024-06-21 18:50:20,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3161 conditions, 519 events. 290/519 cut-off events. For 15390/15390 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2020 event pairs, 58 based on Foata normal form. 1/519 useless extension candidates. Maximal degree in co-relation 3110. Up to 455 conditions per place. [2024-06-21 18:50:20,029 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 71 selfloop transitions, 29 changer transitions 0/103 dead transitions. [2024-06-21 18:50:20,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 103 transitions, 1008 flow [2024-06-21 18:50:20,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:50:20,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:50:20,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-21 18:50:20,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-21 18:50:20,030 INFO L175 Difference]: Start difference. First operand has 107 places, 90 transitions, 690 flow. Second operand 8 states and 106 transitions. [2024-06-21 18:50:20,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 103 transitions, 1008 flow [2024-06-21 18:50:20,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 103 transitions, 947 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-21 18:50:20,042 INFO L231 Difference]: Finished difference. Result has 109 places, 94 transitions, 740 flow [2024-06-21 18:50:20,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=740, PETRI_PLACES=109, PETRI_TRANSITIONS=94} [2024-06-21 18:50:20,042 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 77 predicate places. [2024-06-21 18:50:20,042 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 94 transitions, 740 flow [2024-06-21 18:50:20,043 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) [2024-06-21 18:50:20,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:20,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:20,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 18:50:20,043 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:20,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:20,043 INFO L85 PathProgramCache]: Analyzing trace with hash 417064192, now seen corresponding path program 1 times [2024-06-21 18:50:20,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:20,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476493872] [2024-06-21 18:50:20,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:20,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:21,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:21,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:21,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476493872] [2024-06-21 18:50:21,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476493872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:21,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:21,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:50:21,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803940465] [2024-06-21 18:50:21,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:21,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:50:21,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:21,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:50:21,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:50:21,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:21,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 94 transitions, 740 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:21,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:21,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:21,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:21,409 INFO L124 PetriNetUnfolderBase]: 273/504 cut-off events. [2024-06-21 18:50:21,410 INFO L125 PetriNetUnfolderBase]: For 16499/16499 co-relation queries the response was YES. [2024-06-21 18:50:21,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3110 conditions, 504 events. 273/504 cut-off events. For 16499/16499 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2028 event pairs, 55 based on Foata normal form. 1/504 useless extension candidates. Maximal degree in co-relation 3058. Up to 435 conditions per place. [2024-06-21 18:50:21,412 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 70 selfloop transitions, 17 changer transitions 0/104 dead transitions. [2024-06-21 18:50:21,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 104 transitions, 950 flow [2024-06-21 18:50:21,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:50:21,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:50:21,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-21 18:50:21,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4053030303030303 [2024-06-21 18:50:21,421 INFO L175 Difference]: Start difference. First operand has 109 places, 94 transitions, 740 flow. Second operand 8 states and 107 transitions. [2024-06-21 18:50:21,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 104 transitions, 950 flow [2024-06-21 18:50:21,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 104 transitions, 902 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-21 18:50:21,435 INFO L231 Difference]: Finished difference. Result has 113 places, 96 transitions, 751 flow [2024-06-21 18:50:21,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=751, PETRI_PLACES=113, PETRI_TRANSITIONS=96} [2024-06-21 18:50:21,435 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 81 predicate places. [2024-06-21 18:50:21,435 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 96 transitions, 751 flow [2024-06-21 18:50:21,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:21,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:21,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:21,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-21 18:50:21,436 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:21,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:21,436 INFO L85 PathProgramCache]: Analyzing trace with hash 417056256, now seen corresponding path program 3 times [2024-06-21 18:50:21,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:21,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261340449] [2024-06-21 18:50:21,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:21,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:22,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:22,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:22,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261340449] [2024-06-21 18:50:22,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261340449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:22,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:22,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:50:22,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434997382] [2024-06-21 18:50:22,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:22,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:50:22,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:22,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:50:22,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:50:22,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:22,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 96 transitions, 751 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:22,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:22,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:22,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:22,774 INFO L124 PetriNetUnfolderBase]: 282/516 cut-off events. [2024-06-21 18:50:22,775 INFO L125 PetriNetUnfolderBase]: For 17980/17980 co-relation queries the response was YES. [2024-06-21 18:50:22,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3309 conditions, 516 events. 282/516 cut-off events. For 17980/17980 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2077 event pairs, 56 based on Foata normal form. 1/516 useless extension candidates. Maximal degree in co-relation 3255. Up to 406 conditions per place. [2024-06-21 18:50:22,777 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 65 selfloop transitions, 29 changer transitions 0/106 dead transitions. [2024-06-21 18:50:22,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 106 transitions, 985 flow [2024-06-21 18:50:22,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:50:22,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:50:22,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 115 transitions. [2024-06-21 18:50:22,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4356060606060606 [2024-06-21 18:50:22,778 INFO L175 Difference]: Start difference. First operand has 113 places, 96 transitions, 751 flow. Second operand 8 states and 115 transitions. [2024-06-21 18:50:22,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 106 transitions, 985 flow [2024-06-21 18:50:22,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 106 transitions, 942 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-21 18:50:22,793 INFO L231 Difference]: Finished difference. Result has 115 places, 98 transitions, 801 flow [2024-06-21 18:50:22,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=801, PETRI_PLACES=115, PETRI_TRANSITIONS=98} [2024-06-21 18:50:22,795 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 83 predicate places. [2024-06-21 18:50:22,795 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 98 transitions, 801 flow [2024-06-21 18:50:22,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:22,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:22,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:22,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-21 18:50:22,796 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:22,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:22,796 INFO L85 PathProgramCache]: Analyzing trace with hash 417056473, now seen corresponding path program 3 times [2024-06-21 18:50:22,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:22,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658162355] [2024-06-21 18:50:22,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:22,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:23,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:23,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:23,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658162355] [2024-06-21 18:50:23,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658162355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:23,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:23,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:50:23,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300676355] [2024-06-21 18:50:23,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:23,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:50:23,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:23,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:50:23,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:50:23,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:50:23,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 98 transitions, 801 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) [2024-06-21 18:50:23,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:23,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:50:23,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:24,089 INFO L124 PetriNetUnfolderBase]: 294/526 cut-off events. [2024-06-21 18:50:24,089 INFO L125 PetriNetUnfolderBase]: For 18586/18586 co-relation queries the response was YES. [2024-06-21 18:50:24,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3424 conditions, 526 events. 294/526 cut-off events. For 18586/18586 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2060 event pairs, 57 based on Foata normal form. 1/526 useless extension candidates. Maximal degree in co-relation 3369. Up to 463 conditions per place. [2024-06-21 18:50:24,092 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 75 selfloop transitions, 28 changer transitions 0/106 dead transitions. [2024-06-21 18:50:24,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 106 transitions, 1027 flow [2024-06-21 18:50:24,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:50:24,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:50:24,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-21 18:50:24,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-21 18:50:24,093 INFO L175 Difference]: Start difference. First operand has 115 places, 98 transitions, 801 flow. Second operand 8 states and 106 transitions. [2024-06-21 18:50:24,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 106 transitions, 1027 flow [2024-06-21 18:50:24,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 106 transitions, 942 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-21 18:50:24,109 INFO L231 Difference]: Finished difference. Result has 117 places, 98 transitions, 777 flow [2024-06-21 18:50:24,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=777, PETRI_PLACES=117, PETRI_TRANSITIONS=98} [2024-06-21 18:50:24,110 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 85 predicate places. [2024-06-21 18:50:24,110 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 98 transitions, 777 flow [2024-06-21 18:50:24,110 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) [2024-06-21 18:50:24,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:24,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:24,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-21 18:50:24,111 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:24,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:24,111 INFO L85 PathProgramCache]: Analyzing trace with hash -851434240, now seen corresponding path program 2 times [2024-06-21 18:50:24,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:24,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469811511] [2024-06-21 18:50:24,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:24,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:25,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:25,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469811511] [2024-06-21 18:50:25,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469811511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:25,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:25,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:50:25,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349336958] [2024-06-21 18:50:25,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:25,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:50:25,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:25,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:50:25,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:50:25,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:25,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 98 transitions, 777 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:25,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:25,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:25,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:25,470 INFO L124 PetriNetUnfolderBase]: 283/520 cut-off events. [2024-06-21 18:50:25,470 INFO L125 PetriNetUnfolderBase]: For 20163/20163 co-relation queries the response was YES. [2024-06-21 18:50:25,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3398 conditions, 520 events. 283/520 cut-off events. For 20163/20163 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2104 event pairs, 57 based on Foata normal form. 1/520 useless extension candidates. Maximal degree in co-relation 3342. Up to 413 conditions per place. [2024-06-21 18:50:25,472 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 65 selfloop transitions, 31 changer transitions 0/113 dead transitions. [2024-06-21 18:50:25,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 113 transitions, 1169 flow [2024-06-21 18:50:25,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:50:25,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:50:25,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-21 18:50:25,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42803030303030304 [2024-06-21 18:50:25,473 INFO L175 Difference]: Start difference. First operand has 117 places, 98 transitions, 777 flow. Second operand 8 states and 113 transitions. [2024-06-21 18:50:25,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 113 transitions, 1169 flow [2024-06-21 18:50:25,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 113 transitions, 1099 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-21 18:50:25,490 INFO L231 Difference]: Finished difference. Result has 118 places, 104 transitions, 838 flow [2024-06-21 18:50:25,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=838, PETRI_PLACES=118, PETRI_TRANSITIONS=104} [2024-06-21 18:50:25,490 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 86 predicate places. [2024-06-21 18:50:25,490 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 104 transitions, 838 flow [2024-06-21 18:50:25,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:25,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:25,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:25,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-21 18:50:25,490 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:25,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:25,491 INFO L85 PathProgramCache]: Analyzing trace with hash -851434519, now seen corresponding path program 4 times [2024-06-21 18:50:25,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:25,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913986502] [2024-06-21 18:50:25,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:25,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:26,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:26,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913986502] [2024-06-21 18:50:26,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913986502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:26,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:26,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:50:26,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793120171] [2024-06-21 18:50:26,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:26,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:50:26,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:26,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:50:26,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:50:26,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:50:26,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 104 transitions, 838 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) [2024-06-21 18:50:26,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:26,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:50:26,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:26,890 INFO L124 PetriNetUnfolderBase]: 315/560 cut-off events. [2024-06-21 18:50:26,890 INFO L125 PetriNetUnfolderBase]: For 22760/22760 co-relation queries the response was YES. [2024-06-21 18:50:26,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3803 conditions, 560 events. 315/560 cut-off events. For 22760/22760 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2220 event pairs, 61 based on Foata normal form. 1/560 useless extension candidates. Maximal degree in co-relation 3746. Up to 443 conditions per place. [2024-06-21 18:50:26,893 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 74 selfloop transitions, 45 changer transitions 0/122 dead transitions. [2024-06-21 18:50:26,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 122 transitions, 1388 flow [2024-06-21 18:50:26,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:50:26,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:50:26,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-21 18:50:26,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 18:50:26,894 INFO L175 Difference]: Start difference. First operand has 118 places, 104 transitions, 838 flow. Second operand 8 states and 110 transitions. [2024-06-21 18:50:26,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 122 transitions, 1388 flow [2024-06-21 18:50:26,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 122 transitions, 1356 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-21 18:50:26,911 INFO L231 Difference]: Finished difference. Result has 123 places, 112 transitions, 1009 flow [2024-06-21 18:50:26,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1009, PETRI_PLACES=123, PETRI_TRANSITIONS=112} [2024-06-21 18:50:26,912 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 91 predicate places. [2024-06-21 18:50:26,912 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 112 transitions, 1009 flow [2024-06-21 18:50:26,912 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) [2024-06-21 18:50:26,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:26,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:26,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-21 18:50:26,912 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:26,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:26,913 INFO L85 PathProgramCache]: Analyzing trace with hash 813073760, now seen corresponding path program 3 times [2024-06-21 18:50:26,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:26,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568030220] [2024-06-21 18:50:26,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:26,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:28,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:28,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:28,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568030220] [2024-06-21 18:50:28,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568030220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:28,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:28,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:50:28,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771956839] [2024-06-21 18:50:28,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:28,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:50:28,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:28,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:50:28,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:50:28,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:28,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 112 transitions, 1009 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:28,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:28,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:28,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:28,417 INFO L124 PetriNetUnfolderBase]: 299/546 cut-off events. [2024-06-21 18:50:28,417 INFO L125 PetriNetUnfolderBase]: For 24230/24230 co-relation queries the response was YES. [2024-06-21 18:50:28,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3824 conditions, 546 events. 299/546 cut-off events. For 24230/24230 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2224 event pairs, 57 based on Foata normal form. 1/546 useless extension candidates. Maximal degree in co-relation 3765. Up to 430 conditions per place. [2024-06-21 18:50:28,420 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 67 selfloop transitions, 35 changer transitions 0/123 dead transitions. [2024-06-21 18:50:28,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 123 transitions, 1385 flow [2024-06-21 18:50:28,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:50:28,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:50:28,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-21 18:50:28,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-21 18:50:28,421 INFO L175 Difference]: Start difference. First operand has 123 places, 112 transitions, 1009 flow. Second operand 8 states and 112 transitions. [2024-06-21 18:50:28,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 123 transitions, 1385 flow [2024-06-21 18:50:28,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 123 transitions, 1330 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-21 18:50:28,440 INFO L231 Difference]: Finished difference. Result has 129 places, 114 transitions, 1053 flow [2024-06-21 18:50:28,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1053, PETRI_PLACES=129, PETRI_TRANSITIONS=114} [2024-06-21 18:50:28,441 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 97 predicate places. [2024-06-21 18:50:28,441 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 114 transitions, 1053 flow [2024-06-21 18:50:28,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:28,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:28,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:28,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-21 18:50:28,441 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:28,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:28,442 INFO L85 PathProgramCache]: Analyzing trace with hash 803869054, now seen corresponding path program 4 times [2024-06-21 18:50:28,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:28,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333241626] [2024-06-21 18:50:28,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:28,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:29,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:29,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:29,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333241626] [2024-06-21 18:50:29,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333241626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:29,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:29,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:50:29,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116398540] [2024-06-21 18:50:29,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:29,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:50:29,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:29,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:50:29,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:50:29,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:29,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 114 transitions, 1053 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:29,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:29,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:29,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:29,996 INFO L124 PetriNetUnfolderBase]: 308/559 cut-off events. [2024-06-21 18:50:29,996 INFO L125 PetriNetUnfolderBase]: For 27250/27258 co-relation queries the response was YES. [2024-06-21 18:50:29,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4038 conditions, 559 events. 308/559 cut-off events. For 27250/27258 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2282 event pairs, 70 based on Foata normal form. 1/557 useless extension candidates. Maximal degree in co-relation 3977. Up to 396 conditions per place. [2024-06-21 18:50:29,999 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 71 selfloop transitions, 42 changer transitions 0/129 dead transitions. [2024-06-21 18:50:29,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 129 transitions, 1437 flow [2024-06-21 18:50:30,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:50:30,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:50:30,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-21 18:50:30,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4208754208754209 [2024-06-21 18:50:30,001 INFO L175 Difference]: Start difference. First operand has 129 places, 114 transitions, 1053 flow. Second operand 9 states and 125 transitions. [2024-06-21 18:50:30,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 129 transitions, 1437 flow [2024-06-21 18:50:30,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 129 transitions, 1362 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-21 18:50:30,018 INFO L231 Difference]: Finished difference. Result has 135 places, 121 transitions, 1183 flow [2024-06-21 18:50:30,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1183, PETRI_PLACES=135, PETRI_TRANSITIONS=121} [2024-06-21 18:50:30,019 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 103 predicate places. [2024-06-21 18:50:30,019 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 121 transitions, 1183 flow [2024-06-21 18:50:30,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:30,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:30,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:30,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-21 18:50:30,019 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:30,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:30,020 INFO L85 PathProgramCache]: Analyzing trace with hash 803869271, now seen corresponding path program 5 times [2024-06-21 18:50:30,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:30,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364361299] [2024-06-21 18:50:30,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:30,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:31,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:31,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:31,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364361299] [2024-06-21 18:50:31,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364361299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:31,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:31,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:50:31,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191503204] [2024-06-21 18:50:31,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:31,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:50:31,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:31,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:50:31,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:50:31,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:50:31,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 121 transitions, 1183 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) [2024-06-21 18:50:31,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:31,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:50:31,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:31,414 INFO L124 PetriNetUnfolderBase]: 324/577 cut-off events. [2024-06-21 18:50:31,415 INFO L125 PetriNetUnfolderBase]: For 28257/28257 co-relation queries the response was YES. [2024-06-21 18:50:31,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4254 conditions, 577 events. 324/577 cut-off events. For 28257/28257 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2325 event pairs, 72 based on Foata normal form. 1/577 useless extension candidates. Maximal degree in co-relation 4190. Up to 459 conditions per place. [2024-06-21 18:50:31,419 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 81 selfloop transitions, 46 changer transitions 0/130 dead transitions. [2024-06-21 18:50:31,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 130 transitions, 1593 flow [2024-06-21 18:50:31,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:50:31,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:50:31,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-21 18:50:31,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 18:50:31,425 INFO L175 Difference]: Start difference. First operand has 135 places, 121 transitions, 1183 flow. Second operand 8 states and 108 transitions. [2024-06-21 18:50:31,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 130 transitions, 1593 flow [2024-06-21 18:50:31,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 130 transitions, 1543 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-21 18:50:31,449 INFO L231 Difference]: Finished difference. Result has 140 places, 121 transitions, 1230 flow [2024-06-21 18:50:31,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1230, PETRI_PLACES=140, PETRI_TRANSITIONS=121} [2024-06-21 18:50:31,450 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 108 predicate places. [2024-06-21 18:50:31,450 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 121 transitions, 1230 flow [2024-06-21 18:50:31,450 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) [2024-06-21 18:50:31,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:31,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:31,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-21 18:50:31,451 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:31,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:31,451 INFO L85 PathProgramCache]: Analyzing trace with hash 804145760, now seen corresponding path program 4 times [2024-06-21 18:50:31,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:31,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866540444] [2024-06-21 18:50:31,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:31,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:32,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:32,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:32,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866540444] [2024-06-21 18:50:32,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866540444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:32,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:32,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:50:32,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850198829] [2024-06-21 18:50:32,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:32,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:50:32,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:32,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:50:32,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:50:32,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:32,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 121 transitions, 1230 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:32,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:32,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:32,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:32,830 INFO L124 PetriNetUnfolderBase]: 303/555 cut-off events. [2024-06-21 18:50:32,830 INFO L125 PetriNetUnfolderBase]: For 29160/29160 co-relation queries the response was YES. [2024-06-21 18:50:32,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4150 conditions, 555 events. 303/555 cut-off events. For 29160/29160 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2285 event pairs, 68 based on Foata normal form. 1/555 useless extension candidates. Maximal degree in co-relation 4083. Up to 439 conditions per place. [2024-06-21 18:50:32,834 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 70 selfloop transitions, 38 changer transitions 0/129 dead transitions. [2024-06-21 18:50:32,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 129 transitions, 1534 flow [2024-06-21 18:50:32,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:50:32,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:50:32,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-21 18:50:32,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 18:50:32,839 INFO L175 Difference]: Start difference. First operand has 140 places, 121 transitions, 1230 flow. Second operand 8 states and 110 transitions. [2024-06-21 18:50:32,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 129 transitions, 1534 flow [2024-06-21 18:50:32,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 129 transitions, 1432 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-21 18:50:32,863 INFO L231 Difference]: Finished difference. Result has 142 places, 121 transitions, 1209 flow [2024-06-21 18:50:32,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1128, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1209, PETRI_PLACES=142, PETRI_TRANSITIONS=121} [2024-06-21 18:50:32,864 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 110 predicate places. [2024-06-21 18:50:32,864 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 121 transitions, 1209 flow [2024-06-21 18:50:32,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:32,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:32,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:32,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-21 18:50:32,865 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:32,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:32,866 INFO L85 PathProgramCache]: Analyzing trace with hash -842237749, now seen corresponding path program 6 times [2024-06-21 18:50:32,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:32,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273495154] [2024-06-21 18:50:32,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:32,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:33,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:33,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:33,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273495154] [2024-06-21 18:50:33,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273495154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:33,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:33,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:50:33,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029967341] [2024-06-21 18:50:33,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:33,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:50:33,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:33,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:50:33,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:50:34,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:50:34,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 121 transitions, 1209 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) [2024-06-21 18:50:34,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:34,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:50:34,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:34,238 INFO L124 PetriNetUnfolderBase]: 320/571 cut-off events. [2024-06-21 18:50:34,238 INFO L125 PetriNetUnfolderBase]: For 30127/30127 co-relation queries the response was YES. [2024-06-21 18:50:34,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4268 conditions, 571 events. 320/571 cut-off events. For 30127/30127 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2288 event pairs, 72 based on Foata normal form. 1/571 useless extension candidates. Maximal degree in co-relation 4200. Up to 454 conditions per place. [2024-06-21 18:50:34,242 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 74 selfloop transitions, 52 changer transitions 0/129 dead transitions. [2024-06-21 18:50:34,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 129 transitions, 1551 flow [2024-06-21 18:50:34,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:50:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:50:34,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-21 18:50:34,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-21 18:50:34,244 INFO L175 Difference]: Start difference. First operand has 142 places, 121 transitions, 1209 flow. Second operand 8 states and 106 transitions. [2024-06-21 18:50:34,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 129 transitions, 1551 flow [2024-06-21 18:50:34,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 129 transitions, 1469 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-21 18:50:34,271 INFO L231 Difference]: Finished difference. Result has 144 places, 121 transitions, 1236 flow [2024-06-21 18:50:34,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1127, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1236, PETRI_PLACES=144, PETRI_TRANSITIONS=121} [2024-06-21 18:50:34,272 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 112 predicate places. [2024-06-21 18:50:34,272 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 121 transitions, 1236 flow [2024-06-21 18:50:34,272 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) [2024-06-21 18:50:34,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:34,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:34,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-21 18:50:34,273 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:34,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:34,273 INFO L85 PathProgramCache]: Analyzing trace with hash 497035936, now seen corresponding path program 5 times [2024-06-21 18:50:34,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:34,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351028376] [2024-06-21 18:50:34,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:34,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:35,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:35,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:35,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351028376] [2024-06-21 18:50:35,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351028376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:35,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:35,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:50:35,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635436920] [2024-06-21 18:50:35,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:35,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:50:35,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:35,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:50:35,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:50:35,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:35,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 121 transitions, 1236 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:35,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:35,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:35,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:35,402 INFO L124 PetriNetUnfolderBase]: 313/569 cut-off events. [2024-06-21 18:50:35,402 INFO L125 PetriNetUnfolderBase]: For 31996/32004 co-relation queries the response was YES. [2024-06-21 18:50:35,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4311 conditions, 569 events. 313/569 cut-off events. For 31996/32004 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2348 event pairs, 59 based on Foata normal form. 1/567 useless extension candidates. Maximal degree in co-relation 4242. Up to 469 conditions per place. [2024-06-21 18:50:35,406 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 99 selfloop transitions, 26 changer transitions 0/141 dead transitions. [2024-06-21 18:50:35,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 141 transitions, 1590 flow [2024-06-21 18:50:35,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:50:35,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:50:35,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2024-06-21 18:50:35,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-21 18:50:35,421 INFO L175 Difference]: Start difference. First operand has 144 places, 121 transitions, 1236 flow. Second operand 8 states and 116 transitions. [2024-06-21 18:50:35,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 141 transitions, 1590 flow [2024-06-21 18:50:35,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 141 transitions, 1495 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-21 18:50:35,447 INFO L231 Difference]: Finished difference. Result has 145 places, 127 transitions, 1268 flow [2024-06-21 18:50:35,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1268, PETRI_PLACES=145, PETRI_TRANSITIONS=127} [2024-06-21 18:50:35,448 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 113 predicate places. [2024-06-21 18:50:35,448 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 127 transitions, 1268 flow [2024-06-21 18:50:35,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:35,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:35,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:35,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-21 18:50:35,449 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:35,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:35,449 INFO L85 PathProgramCache]: Analyzing trace with hash -826007898, now seen corresponding path program 6 times [2024-06-21 18:50:35,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:35,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720542699] [2024-06-21 18:50:35,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:35,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:36,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:36,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:36,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720542699] [2024-06-21 18:50:36,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720542699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:36,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:36,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:50:36,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310880847] [2024-06-21 18:50:36,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:36,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:50:36,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:36,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:50:36,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:50:36,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:36,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 127 transitions, 1268 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:36,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:36,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:36,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:36,557 INFO L124 PetriNetUnfolderBase]: 316/574 cut-off events. [2024-06-21 18:50:36,557 INFO L125 PetriNetUnfolderBase]: For 33790/33798 co-relation queries the response was YES. [2024-06-21 18:50:36,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4376 conditions, 574 events. 316/574 cut-off events. For 33790/33798 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2381 event pairs, 60 based on Foata normal form. 1/572 useless extension candidates. Maximal degree in co-relation 4307. Up to 474 conditions per place. [2024-06-21 18:50:36,561 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 99 selfloop transitions, 29 changer transitions 0/144 dead transitions. [2024-06-21 18:50:36,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 144 transitions, 1604 flow [2024-06-21 18:50:36,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:50:36,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:50:36,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-21 18:50:36,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175084175084175 [2024-06-21 18:50:36,573 INFO L175 Difference]: Start difference. First operand has 145 places, 127 transitions, 1268 flow. Second operand 9 states and 124 transitions. [2024-06-21 18:50:36,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 144 transitions, 1604 flow [2024-06-21 18:50:36,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 144 transitions, 1550 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-21 18:50:36,605 INFO L231 Difference]: Finished difference. Result has 151 places, 129 transitions, 1321 flow [2024-06-21 18:50:36,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1321, PETRI_PLACES=151, PETRI_TRANSITIONS=129} [2024-06-21 18:50:36,606 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 119 predicate places. [2024-06-21 18:50:36,606 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 129 transitions, 1321 flow [2024-06-21 18:50:36,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:36,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:36,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:36,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-21 18:50:36,607 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:36,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:36,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1234583294, now seen corresponding path program 7 times [2024-06-21 18:50:36,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:36,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571024266] [2024-06-21 18:50:36,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:36,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:37,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:37,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:37,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571024266] [2024-06-21 18:50:37,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571024266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:37,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:37,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:50:37,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70638496] [2024-06-21 18:50:37,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:37,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:50:37,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:37,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:50:37,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:50:37,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:37,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 129 transitions, 1321 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:37,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:37,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:37,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:37,805 INFO L124 PetriNetUnfolderBase]: 318/578 cut-off events. [2024-06-21 18:50:37,805 INFO L125 PetriNetUnfolderBase]: For 35581/35589 co-relation queries the response was YES. [2024-06-21 18:50:37,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4475 conditions, 578 events. 318/578 cut-off events. For 35581/35589 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2388 event pairs, 60 based on Foata normal form. 1/576 useless extension candidates. Maximal degree in co-relation 4404. Up to 470 conditions per place. [2024-06-21 18:50:37,809 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 97 selfloop transitions, 31 changer transitions 0/144 dead transitions. [2024-06-21 18:50:37,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 144 transitions, 1655 flow [2024-06-21 18:50:37,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:50:37,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:50:37,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2024-06-21 18:50:37,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-21 18:50:37,810 INFO L175 Difference]: Start difference. First operand has 151 places, 129 transitions, 1321 flow. Second operand 8 states and 116 transitions. [2024-06-21 18:50:37,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 144 transitions, 1655 flow [2024-06-21 18:50:37,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 144 transitions, 1559 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-21 18:50:37,844 INFO L231 Difference]: Finished difference. Result has 151 places, 131 transitions, 1340 flow [2024-06-21 18:50:37,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1340, PETRI_PLACES=151, PETRI_TRANSITIONS=131} [2024-06-21 18:50:37,845 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 119 predicate places. [2024-06-21 18:50:37,845 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 131 transitions, 1340 flow [2024-06-21 18:50:37,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:37,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:37,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:37,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-21 18:50:37,845 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:37,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:37,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1234565407, now seen corresponding path program 7 times [2024-06-21 18:50:37,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:37,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242821449] [2024-06-21 18:50:37,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:37,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:38,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:38,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:38,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242821449] [2024-06-21 18:50:38,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242821449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:38,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:38,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:50:38,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325127967] [2024-06-21 18:50:38,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:38,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:50:38,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:38,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:50:38,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:50:38,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:50:38,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 131 transitions, 1340 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) [2024-06-21 18:50:38,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:38,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:50:38,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:39,012 INFO L124 PetriNetUnfolderBase]: 340/606 cut-off events. [2024-06-21 18:50:39,013 INFO L125 PetriNetUnfolderBase]: For 37221/37221 co-relation queries the response was YES. [2024-06-21 18:50:39,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4657 conditions, 606 events. 340/606 cut-off events. For 37221/37221 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2477 event pairs, 66 based on Foata normal form. 1/606 useless extension candidates. Maximal degree in co-relation 4587. Up to 555 conditions per place. [2024-06-21 18:50:39,017 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 122 selfloop transitions, 21 changer transitions 0/146 dead transitions. [2024-06-21 18:50:39,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 146 transitions, 1690 flow [2024-06-21 18:50:39,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:50:39,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:50:39,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-21 18:50:39,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-21 18:50:39,018 INFO L175 Difference]: Start difference. First operand has 151 places, 131 transitions, 1340 flow. Second operand 8 states and 106 transitions. [2024-06-21 18:50:39,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 146 transitions, 1690 flow [2024-06-21 18:50:39,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 146 transitions, 1597 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-21 18:50:39,052 INFO L231 Difference]: Finished difference. Result has 153 places, 133 transitions, 1328 flow [2024-06-21 18:50:39,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1247, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1328, PETRI_PLACES=153, PETRI_TRANSITIONS=133} [2024-06-21 18:50:39,052 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 121 predicate places. [2024-06-21 18:50:39,052 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 133 transitions, 1328 flow [2024-06-21 18:50:39,052 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) [2024-06-21 18:50:39,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:39,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:39,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-21 18:50:39,053 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:39,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:39,053 INFO L85 PathProgramCache]: Analyzing trace with hash 234493922, now seen corresponding path program 8 times [2024-06-21 18:50:39,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:39,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033777297] [2024-06-21 18:50:39,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:39,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:39,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:39,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:39,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:39,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033777297] [2024-06-21 18:50:39,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033777297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:39,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:39,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:50:39,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973689073] [2024-06-21 18:50:39,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:39,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:50:39,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:39,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:50:39,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:50:39,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:39,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 133 transitions, 1328 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:39,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:39,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:39,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:40,296 INFO L124 PetriNetUnfolderBase]: 325/589 cut-off events. [2024-06-21 18:50:40,297 INFO L125 PetriNetUnfolderBase]: For 39045/39053 co-relation queries the response was YES. [2024-06-21 18:50:40,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4594 conditions, 589 events. 325/589 cut-off events. For 39045/39053 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2455 event pairs, 60 based on Foata normal form. 1/587 useless extension candidates. Maximal degree in co-relation 4523. Up to 487 conditions per place. [2024-06-21 18:50:40,300 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 105 selfloop transitions, 26 changer transitions 0/148 dead transitions. [2024-06-21 18:50:40,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 148 transitions, 1674 flow [2024-06-21 18:50:40,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:50:40,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:50:40,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-21 18:50:40,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175084175084175 [2024-06-21 18:50:40,301 INFO L175 Difference]: Start difference. First operand has 153 places, 133 transitions, 1328 flow. Second operand 9 states and 124 transitions. [2024-06-21 18:50:40,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 148 transitions, 1674 flow [2024-06-21 18:50:40,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 148 transitions, 1615 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-21 18:50:40,335 INFO L231 Difference]: Finished difference. Result has 156 places, 135 transitions, 1378 flow [2024-06-21 18:50:40,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1269, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1378, PETRI_PLACES=156, PETRI_TRANSITIONS=135} [2024-06-21 18:50:40,335 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 124 predicate places. [2024-06-21 18:50:40,335 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 135 transitions, 1378 flow [2024-06-21 18:50:40,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:40,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:40,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:40,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-21 18:50:40,336 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:40,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:40,336 INFO L85 PathProgramCache]: Analyzing trace with hash 711001959, now seen corresponding path program 8 times [2024-06-21 18:50:40,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:40,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195175013] [2024-06-21 18:50:40,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:40,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:41,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:41,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:41,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195175013] [2024-06-21 18:50:41,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195175013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:41,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:41,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:50:41,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930520796] [2024-06-21 18:50:41,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:41,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:50:41,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:41,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:50:41,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:50:41,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:50:41,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 135 transitions, 1378 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) [2024-06-21 18:50:41,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:41,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:50:41,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:41,589 INFO L124 PetriNetUnfolderBase]: 346/616 cut-off events. [2024-06-21 18:50:41,589 INFO L125 PetriNetUnfolderBase]: For 40848/40848 co-relation queries the response was YES. [2024-06-21 18:50:41,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4800 conditions, 616 events. 346/616 cut-off events. For 40848/40848 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2526 event pairs, 65 based on Foata normal form. 1/616 useless extension candidates. Maximal degree in co-relation 4727. Up to 565 conditions per place. [2024-06-21 18:50:41,592 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 125 selfloop transitions, 21 changer transitions 0/149 dead transitions. [2024-06-21 18:50:41,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 149 transitions, 1736 flow [2024-06-21 18:50:41,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:50:41,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:50:41,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-21 18:50:41,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38047138047138046 [2024-06-21 18:50:41,593 INFO L175 Difference]: Start difference. First operand has 156 places, 135 transitions, 1378 flow. Second operand 9 states and 113 transitions. [2024-06-21 18:50:41,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 149 transitions, 1736 flow [2024-06-21 18:50:41,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 149 transitions, 1647 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-21 18:50:41,635 INFO L231 Difference]: Finished difference. Result has 159 places, 137 transitions, 1374 flow [2024-06-21 18:50:41,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1289, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1374, PETRI_PLACES=159, PETRI_TRANSITIONS=137} [2024-06-21 18:50:41,636 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 127 predicate places. [2024-06-21 18:50:41,636 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 137 transitions, 1374 flow [2024-06-21 18:50:41,636 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) [2024-06-21 18:50:41,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:41,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:41,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-21 18:50:41,636 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:41,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:41,637 INFO L85 PathProgramCache]: Analyzing trace with hash 234643652, now seen corresponding path program 9 times [2024-06-21 18:50:41,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:41,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835149341] [2024-06-21 18:50:41,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:41,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:42,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:42,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:42,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835149341] [2024-06-21 18:50:42,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835149341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:42,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:42,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:50:42,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726273230] [2024-06-21 18:50:42,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:42,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:50:42,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:42,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:50:42,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:50:42,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:42,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 137 transitions, 1374 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:42,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:42,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:42,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:42,899 INFO L124 PetriNetUnfolderBase]: 331/599 cut-off events. [2024-06-21 18:50:42,899 INFO L125 PetriNetUnfolderBase]: For 42852/42860 co-relation queries the response was YES. [2024-06-21 18:50:42,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4748 conditions, 599 events. 331/599 cut-off events. For 42852/42860 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2496 event pairs, 60 based on Foata normal form. 1/597 useless extension candidates. Maximal degree in co-relation 4674. Up to 489 conditions per place. [2024-06-21 18:50:42,903 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 104 selfloop transitions, 29 changer transitions 0/151 dead transitions. [2024-06-21 18:50:42,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 151 transitions, 1724 flow [2024-06-21 18:50:42,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:50:42,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:50:42,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-21 18:50:42,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4208754208754209 [2024-06-21 18:50:42,904 INFO L175 Difference]: Start difference. First operand has 159 places, 137 transitions, 1374 flow. Second operand 9 states and 125 transitions. [2024-06-21 18:50:42,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 151 transitions, 1724 flow [2024-06-21 18:50:42,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 151 transitions, 1661 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-21 18:50:42,950 INFO L231 Difference]: Finished difference. Result has 161 places, 139 transitions, 1430 flow [2024-06-21 18:50:42,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1311, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1430, PETRI_PLACES=161, PETRI_TRANSITIONS=139} [2024-06-21 18:50:42,951 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 129 predicate places. [2024-06-21 18:50:42,951 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 139 transitions, 1430 flow [2024-06-21 18:50:42,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:42,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:42,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:42,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-21 18:50:42,952 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:42,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:42,952 INFO L85 PathProgramCache]: Analyzing trace with hash 711203552, now seen corresponding path program 10 times [2024-06-21 18:50:42,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:42,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543971544] [2024-06-21 18:50:42,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:42,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:43,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:43,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:43,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543971544] [2024-06-21 18:50:43,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543971544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:43,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:43,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:50:43,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206365596] [2024-06-21 18:50:43,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:43,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:50:43,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:43,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:50:43,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:50:44,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:44,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 139 transitions, 1430 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:44,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:44,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:44,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:44,253 INFO L124 PetriNetUnfolderBase]: 331/602 cut-off events. [2024-06-21 18:50:44,253 INFO L125 PetriNetUnfolderBase]: For 43103/43103 co-relation queries the response was YES. [2024-06-21 18:50:44,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4758 conditions, 602 events. 331/602 cut-off events. For 43103/43103 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2504 event pairs, 56 based on Foata normal form. 1/602 useless extension candidates. Maximal degree in co-relation 4683. Up to 465 conditions per place. [2024-06-21 18:50:44,257 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 93 selfloop transitions, 40 changer transitions 0/151 dead transitions. [2024-06-21 18:50:44,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 151 transitions, 1757 flow [2024-06-21 18:50:44,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:50:44,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:50:44,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-21 18:50:44,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175084175084175 [2024-06-21 18:50:44,258 INFO L175 Difference]: Start difference. First operand has 161 places, 139 transitions, 1430 flow. Second operand 9 states and 124 transitions. [2024-06-21 18:50:44,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 151 transitions, 1757 flow [2024-06-21 18:50:44,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 151 transitions, 1660 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-21 18:50:44,310 INFO L231 Difference]: Finished difference. Result has 163 places, 140 transitions, 1453 flow [2024-06-21 18:50:44,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1333, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1453, PETRI_PLACES=163, PETRI_TRANSITIONS=140} [2024-06-21 18:50:44,310 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 131 predicate places. [2024-06-21 18:50:44,310 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 140 transitions, 1453 flow [2024-06-21 18:50:44,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:44,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:44,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:44,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-21 18:50:44,311 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:44,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:44,311 INFO L85 PathProgramCache]: Analyzing trace with hash 711203769, now seen corresponding path program 9 times [2024-06-21 18:50:44,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:44,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288228305] [2024-06-21 18:50:44,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:44,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:45,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:45,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:45,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288228305] [2024-06-21 18:50:45,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288228305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:45,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:45,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:50:45,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121833769] [2024-06-21 18:50:45,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:45,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:50:45,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:45,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:50:45,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:50:45,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:50:45,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 140 transitions, 1453 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) [2024-06-21 18:50:45,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:45,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:50:45,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:45,583 INFO L124 PetriNetUnfolderBase]: 350/623 cut-off events. [2024-06-21 18:50:45,583 INFO L125 PetriNetUnfolderBase]: For 44549/44549 co-relation queries the response was YES. [2024-06-21 18:50:45,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4918 conditions, 623 events. 350/623 cut-off events. For 44549/44549 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2556 event pairs, 55 based on Foata normal form. 1/623 useless extension candidates. Maximal degree in co-relation 4842. Up to 550 conditions per place. [2024-06-21 18:50:45,587 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 120 selfloop transitions, 31 changer transitions 0/154 dead transitions. [2024-06-21 18:50:45,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 154 transitions, 1913 flow [2024-06-21 18:50:45,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:50:45,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:50:45,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-21 18:50:45,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39057239057239057 [2024-06-21 18:50:45,588 INFO L175 Difference]: Start difference. First operand has 163 places, 140 transitions, 1453 flow. Second operand 9 states and 116 transitions. [2024-06-21 18:50:45,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 154 transitions, 1913 flow [2024-06-21 18:50:45,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 154 transitions, 1790 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-21 18:50:45,642 INFO L231 Difference]: Finished difference. Result has 165 places, 142 transitions, 1435 flow [2024-06-21 18:50:45,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1330, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1435, PETRI_PLACES=165, PETRI_TRANSITIONS=142} [2024-06-21 18:50:45,643 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 133 predicate places. [2024-06-21 18:50:45,643 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 142 transitions, 1435 flow [2024-06-21 18:50:45,643 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) [2024-06-21 18:50:45,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:45,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:45,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-21 18:50:45,643 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:45,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:45,644 INFO L85 PathProgramCache]: Analyzing trace with hash 711211488, now seen corresponding path program 5 times [2024-06-21 18:50:45,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:45,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903601538] [2024-06-21 18:50:45,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:45,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:46,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:46,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:46,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903601538] [2024-06-21 18:50:46,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903601538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:46,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:46,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:50:46,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899543537] [2024-06-21 18:50:46,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:46,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:50:46,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:46,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:50:46,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:50:46,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:46,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 142 transitions, 1435 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:46,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:46,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:46,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:46,996 INFO L124 PetriNetUnfolderBase]: 326/595 cut-off events. [2024-06-21 18:50:46,996 INFO L125 PetriNetUnfolderBase]: For 45963/45964 co-relation queries the response was YES. [2024-06-21 18:50:46,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4669 conditions, 595 events. 326/595 cut-off events. For 45963/45964 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2499 event pairs, 56 based on Foata normal form. 2/593 useless extension candidates. Maximal degree in co-relation 4592. Up to 510 conditions per place. [2024-06-21 18:50:47,000 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 112 selfloop transitions, 17 changer transitions 0/153 dead transitions. [2024-06-21 18:50:47,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 153 transitions, 1721 flow [2024-06-21 18:50:47,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:50:47,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:50:47,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-21 18:50:47,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39730639730639733 [2024-06-21 18:50:47,003 INFO L175 Difference]: Start difference. First operand has 165 places, 142 transitions, 1435 flow. Second operand 9 states and 118 transitions. [2024-06-21 18:50:47,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 153 transitions, 1721 flow [2024-06-21 18:50:47,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 153 transitions, 1580 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-21 18:50:47,059 INFO L231 Difference]: Finished difference. Result has 166 places, 142 transitions, 1333 flow [2024-06-21 18:50:47,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1333, PETRI_PLACES=166, PETRI_TRANSITIONS=142} [2024-06-21 18:50:47,060 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 134 predicate places. [2024-06-21 18:50:47,060 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 142 transitions, 1333 flow [2024-06-21 18:50:47,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:47,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:47,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:47,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-21 18:50:47,060 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:47,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:47,061 INFO L85 PathProgramCache]: Analyzing trace with hash 240215499, now seen corresponding path program 10 times [2024-06-21 18:50:47,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:47,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535153104] [2024-06-21 18:50:47,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:47,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:48,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:48,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:48,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535153104] [2024-06-21 18:50:48,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535153104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:48,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:48,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:50:48,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28958090] [2024-06-21 18:50:48,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:48,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:50:48,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:48,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:50:48,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:50:48,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:50:48,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 142 transitions, 1333 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) [2024-06-21 18:50:48,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:48,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:50:48,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:48,346 INFO L124 PetriNetUnfolderBase]: 346/617 cut-off events. [2024-06-21 18:50:48,346 INFO L125 PetriNetUnfolderBase]: For 45557/45557 co-relation queries the response was YES. [2024-06-21 18:50:48,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4708 conditions, 617 events. 346/617 cut-off events. For 45557/45557 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2530 event pairs, 55 based on Foata normal form. 1/617 useless extension candidates. Maximal degree in co-relation 4631. Up to 545 conditions per place. [2024-06-21 18:50:48,350 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 117 selfloop transitions, 33 changer transitions 0/153 dead transitions. [2024-06-21 18:50:48,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 153 transitions, 1661 flow [2024-06-21 18:50:48,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:50:48,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:50:48,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-21 18:50:48,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-21 18:50:48,352 INFO L175 Difference]: Start difference. First operand has 166 places, 142 transitions, 1333 flow. Second operand 9 states and 114 transitions. [2024-06-21 18:50:48,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 153 transitions, 1661 flow [2024-06-21 18:50:48,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 153 transitions, 1556 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-21 18:50:48,418 INFO L231 Difference]: Finished difference. Result has 165 places, 142 transitions, 1299 flow [2024-06-21 18:50:48,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1228, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1299, PETRI_PLACES=165, PETRI_TRANSITIONS=142} [2024-06-21 18:50:48,419 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 133 predicate places. [2024-06-21 18:50:48,419 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 142 transitions, 1299 flow [2024-06-21 18:50:48,419 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) [2024-06-21 18:50:48,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:48,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:48,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-21 18:50:48,419 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:48,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:48,420 INFO L85 PathProgramCache]: Analyzing trace with hash -841899136, now seen corresponding path program 1 times [2024-06-21 18:50:48,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:48,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386716249] [2024-06-21 18:50:48,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:48,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:49,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:49,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:49,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386716249] [2024-06-21 18:50:49,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386716249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:49,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:49,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:50:49,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960562714] [2024-06-21 18:50:49,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:49,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:50:49,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:49,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:50:49,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:50:50,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:50,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 142 transitions, 1299 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:50,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:50,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:50,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:50,260 INFO L124 PetriNetUnfolderBase]: 321/587 cut-off events. [2024-06-21 18:50:50,260 INFO L125 PetriNetUnfolderBase]: For 46588/46589 co-relation queries the response was YES. [2024-06-21 18:50:50,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4489 conditions, 587 events. 321/587 cut-off events. For 46588/46589 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2496 event pairs, 66 based on Foata normal form. 2/583 useless extension candidates. Maximal degree in co-relation 4411. Up to 510 conditions per place. [2024-06-21 18:50:50,264 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 112 selfloop transitions, 16 changer transitions 0/152 dead transitions. [2024-06-21 18:50:50,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 152 transitions, 1587 flow [2024-06-21 18:50:50,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:50:50,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:50:50,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-21 18:50:50,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3872053872053872 [2024-06-21 18:50:50,265 INFO L175 Difference]: Start difference. First operand has 165 places, 142 transitions, 1299 flow. Second operand 9 states and 115 transitions. [2024-06-21 18:50:50,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 152 transitions, 1587 flow [2024-06-21 18:50:50,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 152 transitions, 1485 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 18:50:50,333 INFO L231 Difference]: Finished difference. Result has 165 places, 144 transitions, 1252 flow [2024-06-21 18:50:50,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1252, PETRI_PLACES=165, PETRI_TRANSITIONS=144} [2024-06-21 18:50:50,333 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 133 predicate places. [2024-06-21 18:50:50,333 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 144 transitions, 1252 flow [2024-06-21 18:50:50,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:50,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:50,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:50,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-21 18:50:50,334 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:50,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:50,334 INFO L85 PathProgramCache]: Analyzing trace with hash -133408936, now seen corresponding path program 1 times [2024-06-21 18:50:50,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:50,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527841320] [2024-06-21 18:50:50,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:50,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:51,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:51,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:51,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527841320] [2024-06-21 18:50:51,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527841320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:51,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:51,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:50:51,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478322218] [2024-06-21 18:50:51,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:51,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:50:51,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:51,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:50:51,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:50:51,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:51,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 144 transitions, 1252 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:51,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:51,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:51,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:51,890 INFO L124 PetriNetUnfolderBase]: 335/611 cut-off events. [2024-06-21 18:50:51,890 INFO L125 PetriNetUnfolderBase]: For 48259/48259 co-relation queries the response was YES. [2024-06-21 18:50:51,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4678 conditions, 611 events. 335/611 cut-off events. For 48259/48259 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2614 event pairs, 57 based on Foata normal form. 1/611 useless extension candidates. Maximal degree in co-relation 4599. Up to 479 conditions per place. [2024-06-21 18:50:51,895 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 113 selfloop transitions, 28 changer transitions 0/160 dead transitions. [2024-06-21 18:50:51,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 160 transitions, 1625 flow [2024-06-21 18:50:51,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:50:51,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:50:51,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2024-06-21 18:50:51,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4276094276094276 [2024-06-21 18:50:51,896 INFO L175 Difference]: Start difference. First operand has 165 places, 144 transitions, 1252 flow. Second operand 9 states and 127 transitions. [2024-06-21 18:50:51,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 160 transitions, 1625 flow [2024-06-21 18:50:51,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 160 transitions, 1586 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-21 18:50:51,956 INFO L231 Difference]: Finished difference. Result has 167 places, 148 transitions, 1335 flow [2024-06-21 18:50:51,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1335, PETRI_PLACES=167, PETRI_TRANSITIONS=148} [2024-06-21 18:50:51,957 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 135 predicate places. [2024-06-21 18:50:51,957 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 148 transitions, 1335 flow [2024-06-21 18:50:51,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:51,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:51,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:51,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-21 18:50:51,957 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:51,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:51,958 INFO L85 PathProgramCache]: Analyzing trace with hash -133288966, now seen corresponding path program 2 times [2024-06-21 18:50:51,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:51,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972634368] [2024-06-21 18:50:51,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:51,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:53,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:53,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:53,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972634368] [2024-06-21 18:50:53,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972634368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:53,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:53,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:50:53,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284764888] [2024-06-21 18:50:53,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:53,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:50:53,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:53,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:50:53,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:50:53,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:53,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 148 transitions, 1335 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:53,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:53,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:53,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:53,715 INFO L124 PetriNetUnfolderBase]: 338/618 cut-off events. [2024-06-21 18:50:53,715 INFO L125 PetriNetUnfolderBase]: For 50311/50311 co-relation queries the response was YES. [2024-06-21 18:50:53,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4781 conditions, 618 events. 338/618 cut-off events. For 50311/50311 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2658 event pairs, 57 based on Foata normal form. 1/618 useless extension candidates. Maximal degree in co-relation 4701. Up to 478 conditions per place. [2024-06-21 18:50:53,719 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 111 selfloop transitions, 31 changer transitions 0/161 dead transitions. [2024-06-21 18:50:53,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 161 transitions, 1677 flow [2024-06-21 18:50:53,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:50:53,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:50:53,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-21 18:50:53,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121212121212121 [2024-06-21 18:50:53,720 INFO L175 Difference]: Start difference. First operand has 167 places, 148 transitions, 1335 flow. Second operand 10 states and 136 transitions. [2024-06-21 18:50:53,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 161 transitions, 1677 flow [2024-06-21 18:50:53,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 161 transitions, 1606 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-21 18:50:53,790 INFO L231 Difference]: Finished difference. Result has 171 places, 150 transitions, 1363 flow [2024-06-21 18:50:53,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1363, PETRI_PLACES=171, PETRI_TRANSITIONS=150} [2024-06-21 18:50:53,791 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 139 predicate places. [2024-06-21 18:50:53,791 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 150 transitions, 1363 flow [2024-06-21 18:50:53,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:53,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:53,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:53,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-21 18:50:53,791 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:53,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:53,791 INFO L85 PathProgramCache]: Analyzing trace with hash -133288780, now seen corresponding path program 1 times [2024-06-21 18:50:53,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:53,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529917745] [2024-06-21 18:50:53,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:53,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:54,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:54,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:54,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529917745] [2024-06-21 18:50:54,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529917745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:54,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:54,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:50:54,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956441920] [2024-06-21 18:50:54,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:54,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:50:54,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:54,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:50:54,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:50:54,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:50:54,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 150 transitions, 1363 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) [2024-06-21 18:50:54,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:54,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:50:54,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:55,279 INFO L124 PetriNetUnfolderBase]: 357/640 cut-off events. [2024-06-21 18:50:55,279 INFO L125 PetriNetUnfolderBase]: For 53638/53638 co-relation queries the response was YES. [2024-06-21 18:50:55,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4954 conditions, 640 events. 357/640 cut-off events. For 53638/53638 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2709 event pairs, 69 based on Foata normal form. 1/640 useless extension candidates. Maximal degree in co-relation 4873. Up to 564 conditions per place. [2024-06-21 18:50:55,283 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 132 selfloop transitions, 28 changer transitions 0/163 dead transitions. [2024-06-21 18:50:55,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 163 transitions, 1737 flow [2024-06-21 18:50:55,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:50:55,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:50:55,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-21 18:50:55,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39057239057239057 [2024-06-21 18:50:55,284 INFO L175 Difference]: Start difference. First operand has 171 places, 150 transitions, 1363 flow. Second operand 9 states and 116 transitions. [2024-06-21 18:50:55,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 163 transitions, 1737 flow [2024-06-21 18:50:55,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 163 transitions, 1633 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-21 18:50:55,338 INFO L231 Difference]: Finished difference. Result has 171 places, 152 transitions, 1348 flow [2024-06-21 18:50:55,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1348, PETRI_PLACES=171, PETRI_TRANSITIONS=152} [2024-06-21 18:50:55,339 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 139 predicate places. [2024-06-21 18:50:55,339 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 152 transitions, 1348 flow [2024-06-21 18:50:55,339 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) [2024-06-21 18:50:55,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:55,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:55,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-21 18:50:55,339 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:55,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:55,340 INFO L85 PathProgramCache]: Analyzing trace with hash -128640392, now seen corresponding path program 1 times [2024-06-21 18:50:55,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:55,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071427267] [2024-06-21 18:50:55,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:55,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:56,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:56,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:56,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071427267] [2024-06-21 18:50:56,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071427267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:56,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:56,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:50:56,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521531848] [2024-06-21 18:50:56,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:56,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:50:56,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:56,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:50:56,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:50:56,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:50:56,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 152 transitions, 1348 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) [2024-06-21 18:50:56,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:56,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:50:56,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:56,827 INFO L124 PetriNetUnfolderBase]: 360/645 cut-off events. [2024-06-21 18:50:56,827 INFO L125 PetriNetUnfolderBase]: For 54321/54321 co-relation queries the response was YES. [2024-06-21 18:50:56,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5025 conditions, 645 events. 360/645 cut-off events. For 54321/54321 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2744 event pairs, 52 based on Foata normal form. 1/645 useless extension candidates. Maximal degree in co-relation 4944. Up to 587 conditions per place. [2024-06-21 18:50:56,831 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 138 selfloop transitions, 23 changer transitions 0/164 dead transitions. [2024-06-21 18:50:56,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 164 transitions, 1718 flow [2024-06-21 18:50:56,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:50:56,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:50:56,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-21 18:50:56,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38047138047138046 [2024-06-21 18:50:56,831 INFO L175 Difference]: Start difference. First operand has 171 places, 152 transitions, 1348 flow. Second operand 9 states and 113 transitions. [2024-06-21 18:50:56,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 164 transitions, 1718 flow [2024-06-21 18:50:56,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 164 transitions, 1645 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-21 18:50:56,909 INFO L231 Difference]: Finished difference. Result has 173 places, 154 transitions, 1352 flow [2024-06-21 18:50:56,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1275, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1352, PETRI_PLACES=173, PETRI_TRANSITIONS=154} [2024-06-21 18:50:56,909 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 141 predicate places. [2024-06-21 18:50:56,909 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 154 transitions, 1352 flow [2024-06-21 18:50:56,909 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) [2024-06-21 18:50:56,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:56,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:56,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-21 18:50:56,910 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:56,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:56,910 INFO L85 PathProgramCache]: Analyzing trace with hash -2033830942, now seen corresponding path program 2 times [2024-06-21 18:50:56,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:56,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408129297] [2024-06-21 18:50:56,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:56,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:58,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:58,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:58,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408129297] [2024-06-21 18:50:58,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408129297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:58,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:58,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:50:58,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202902442] [2024-06-21 18:50:58,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:58,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:50:58,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:58,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:50:58,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:50:58,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:50:58,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 154 transitions, 1352 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) [2024-06-21 18:50:58,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:58,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:50:58,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:50:58,388 INFO L124 PetriNetUnfolderBase]: 368/658 cut-off events. [2024-06-21 18:50:58,388 INFO L125 PetriNetUnfolderBase]: For 57777/57777 co-relation queries the response was YES. [2024-06-21 18:50:58,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5209 conditions, 658 events. 368/658 cut-off events. For 57777/57777 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2823 event pairs, 56 based on Foata normal form. 1/658 useless extension candidates. Maximal degree in co-relation 5127. Up to 566 conditions per place. [2024-06-21 18:50:58,392 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 130 selfloop transitions, 36 changer transitions 0/169 dead transitions. [2024-06-21 18:50:58,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 169 transitions, 1874 flow [2024-06-21 18:50:58,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:50:58,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:50:58,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-21 18:50:58,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4006734006734007 [2024-06-21 18:50:58,393 INFO L175 Difference]: Start difference. First operand has 173 places, 154 transitions, 1352 flow. Second operand 9 states and 119 transitions. [2024-06-21 18:50:58,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 169 transitions, 1874 flow [2024-06-21 18:50:58,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 169 transitions, 1813 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-21 18:50:58,476 INFO L231 Difference]: Finished difference. Result has 175 places, 158 transitions, 1428 flow [2024-06-21 18:50:58,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1291, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1428, PETRI_PLACES=175, PETRI_TRANSITIONS=158} [2024-06-21 18:50:58,476 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 143 predicate places. [2024-06-21 18:50:58,476 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 158 transitions, 1428 flow [2024-06-21 18:50:58,477 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) [2024-06-21 18:50:58,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:50:58,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:50:58,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-21 18:50:58,477 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:50:58,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:50:58,477 INFO L85 PathProgramCache]: Analyzing trace with hash -128647336, now seen corresponding path program 3 times [2024-06-21 18:50:58,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:50:58,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412725957] [2024-06-21 18:50:58,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:50:58,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:50:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:50:59,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:50:59,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:50:59,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412725957] [2024-06-21 18:50:59,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412725957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:50:59,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:50:59,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:50:59,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741264242] [2024-06-21 18:50:59,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:50:59,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:50:59,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:50:59,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:50:59,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:50:59,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:50:59,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 158 transitions, 1428 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:50:59,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:50:59,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:50:59,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:00,337 INFO L124 PetriNetUnfolderBase]: 356/649 cut-off events. [2024-06-21 18:51:00,337 INFO L125 PetriNetUnfolderBase]: For 60664/60664 co-relation queries the response was YES. [2024-06-21 18:51:00,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5250 conditions, 649 events. 356/649 cut-off events. For 60664/60664 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2849 event pairs, 55 based on Foata normal form. 1/649 useless extension candidates. Maximal degree in co-relation 5167. Up to 491 conditions per place. [2024-06-21 18:51:00,342 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 113 selfloop transitions, 35 changer transitions 0/170 dead transitions. [2024-06-21 18:51:00,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 170 transitions, 1782 flow [2024-06-21 18:51:00,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:51:00,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:51:00,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-21 18:51:00,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-21 18:51:00,343 INFO L175 Difference]: Start difference. First operand has 175 places, 158 transitions, 1428 flow. Second operand 10 states and 137 transitions. [2024-06-21 18:51:00,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 170 transitions, 1782 flow [2024-06-21 18:51:00,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 170 transitions, 1717 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-21 18:51:00,426 INFO L231 Difference]: Finished difference. Result has 180 places, 160 transitions, 1474 flow [2024-06-21 18:51:00,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1474, PETRI_PLACES=180, PETRI_TRANSITIONS=160} [2024-06-21 18:51:00,427 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 148 predicate places. [2024-06-21 18:51:00,427 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 160 transitions, 1474 flow [2024-06-21 18:51:00,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:00,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:00,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:00,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-21 18:51:00,427 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:00,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:00,428 INFO L85 PathProgramCache]: Analyzing trace with hash -128647150, now seen corresponding path program 3 times [2024-06-21 18:51:00,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:00,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042244465] [2024-06-21 18:51:00,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:00,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:01,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:01,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:01,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042244465] [2024-06-21 18:51:01,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042244465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:01,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:01,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:01,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580254558] [2024-06-21 18:51:01,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:01,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:01,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:01,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:01,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:01,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:51:01,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 160 transitions, 1474 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) [2024-06-21 18:51:01,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:01,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:51:01,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:01,915 INFO L124 PetriNetUnfolderBase]: 369/662 cut-off events. [2024-06-21 18:51:01,916 INFO L125 PetriNetUnfolderBase]: For 61018/61018 co-relation queries the response was YES. [2024-06-21 18:51:01,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5360 conditions, 662 events. 369/662 cut-off events. For 61018/61018 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2858 event pairs, 56 based on Foata normal form. 1/662 useless extension candidates. Maximal degree in co-relation 5275. Up to 569 conditions per place. [2024-06-21 18:51:01,920 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 132 selfloop transitions, 35 changer transitions 0/170 dead transitions. [2024-06-21 18:51:01,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 170 transitions, 1834 flow [2024-06-21 18:51:01,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:51:01,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:51:01,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-21 18:51:01,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4006734006734007 [2024-06-21 18:51:01,921 INFO L175 Difference]: Start difference. First operand has 180 places, 160 transitions, 1474 flow. Second operand 9 states and 119 transitions. [2024-06-21 18:51:01,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 170 transitions, 1834 flow [2024-06-21 18:51:01,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 170 transitions, 1727 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-21 18:51:01,996 INFO L231 Difference]: Finished difference. Result has 181 places, 160 transitions, 1442 flow [2024-06-21 18:51:01,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1442, PETRI_PLACES=181, PETRI_TRANSITIONS=160} [2024-06-21 18:51:01,996 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 149 predicate places. [2024-06-21 18:51:01,996 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 160 transitions, 1442 flow [2024-06-21 18:51:01,997 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) [2024-06-21 18:51:01,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:01,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:01,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-21 18:51:01,997 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:01,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:01,997 INFO L85 PathProgramCache]: Analyzing trace with hash 13515608, now seen corresponding path program 4 times [2024-06-21 18:51:01,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:01,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411663120] [2024-06-21 18:51:01,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:01,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:03,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:03,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:03,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411663120] [2024-06-21 18:51:03,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411663120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:03,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:03,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:51:03,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002643181] [2024-06-21 18:51:03,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:03,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:51:03,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:03,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:51:03,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:51:03,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:51:03,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 160 transitions, 1442 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:03,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:03,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:51:03,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:04,017 INFO L124 PetriNetUnfolderBase]: 357/653 cut-off events. [2024-06-21 18:51:04,017 INFO L125 PetriNetUnfolderBase]: For 63540/63540 co-relation queries the response was YES. [2024-06-21 18:51:04,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5326 conditions, 653 events. 357/653 cut-off events. For 63540/63540 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2883 event pairs, 55 based on Foata normal form. 1/653 useless extension candidates. Maximal degree in co-relation 5240. Up to 488 conditions per place. [2024-06-21 18:51:04,022 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 111 selfloop transitions, 38 changer transitions 0/171 dead transitions. [2024-06-21 18:51:04,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 171 transitions, 1798 flow [2024-06-21 18:51:04,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:51:04,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:51:04,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-21 18:51:04,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-21 18:51:04,023 INFO L175 Difference]: Start difference. First operand has 181 places, 160 transitions, 1442 flow. Second operand 10 states and 138 transitions. [2024-06-21 18:51:04,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 171 transitions, 1798 flow [2024-06-21 18:51:04,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 171 transitions, 1714 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-21 18:51:04,107 INFO L231 Difference]: Finished difference. Result has 183 places, 162 transitions, 1479 flow [2024-06-21 18:51:04,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1358, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1479, PETRI_PLACES=183, PETRI_TRANSITIONS=162} [2024-06-21 18:51:04,108 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 151 predicate places. [2024-06-21 18:51:04,108 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 162 transitions, 1479 flow [2024-06-21 18:51:04,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:04,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:04,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:04,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-21 18:51:04,108 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:04,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:04,108 INFO L85 PathProgramCache]: Analyzing trace with hash 43842740, now seen corresponding path program 4 times [2024-06-21 18:51:04,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:04,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305949318] [2024-06-21 18:51:04,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:04,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:05,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:05,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:05,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305949318] [2024-06-21 18:51:05,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305949318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:05,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:05,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:05,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749511920] [2024-06-21 18:51:05,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:05,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:05,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:05,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:05,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:05,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:51:05,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 162 transitions, 1479 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) [2024-06-21 18:51:05,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:05,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:51:05,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:05,637 INFO L124 PetriNetUnfolderBase]: 380/682 cut-off events. [2024-06-21 18:51:05,637 INFO L125 PetriNetUnfolderBase]: For 68445/68445 co-relation queries the response was YES. [2024-06-21 18:51:05,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5630 conditions, 682 events. 380/682 cut-off events. For 68445/68445 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2959 event pairs, 68 based on Foata normal form. 1/682 useless extension candidates. Maximal degree in co-relation 5543. Up to 560 conditions per place. [2024-06-21 18:51:05,641 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 128 selfloop transitions, 45 changer transitions 0/176 dead transitions. [2024-06-21 18:51:05,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 176 transitions, 2027 flow [2024-06-21 18:51:05,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:51:05,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:51:05,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-21 18:51:05,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107744107744108 [2024-06-21 18:51:05,644 INFO L175 Difference]: Start difference. First operand has 183 places, 162 transitions, 1479 flow. Second operand 9 states and 122 transitions. [2024-06-21 18:51:05,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 176 transitions, 2027 flow [2024-06-21 18:51:05,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 176 transitions, 1922 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-21 18:51:05,725 INFO L231 Difference]: Finished difference. Result has 184 places, 166 transitions, 1537 flow [2024-06-21 18:51:05,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1374, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1537, PETRI_PLACES=184, PETRI_TRANSITIONS=166} [2024-06-21 18:51:05,726 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 152 predicate places. [2024-06-21 18:51:05,726 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 166 transitions, 1537 flow [2024-06-21 18:51:05,726 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) [2024-06-21 18:51:05,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:05,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:05,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-21 18:51:05,726 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:05,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:05,727 INFO L85 PathProgramCache]: Analyzing trace with hash 13752944, now seen corresponding path program 5 times [2024-06-21 18:51:05,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:05,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294964896] [2024-06-21 18:51:05,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:05,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:06,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:06,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:06,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294964896] [2024-06-21 18:51:06,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294964896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:06,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:06,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:06,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639884573] [2024-06-21 18:51:06,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:06,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:06,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:06,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:06,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:06,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:51:07,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 166 transitions, 1537 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) [2024-06-21 18:51:07,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:07,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:51:07,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:07,326 INFO L124 PetriNetUnfolderBase]: 383/687 cut-off events. [2024-06-21 18:51:07,326 INFO L125 PetriNetUnfolderBase]: For 69716/69716 co-relation queries the response was YES. [2024-06-21 18:51:07,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5736 conditions, 687 events. 383/687 cut-off events. For 69716/69716 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2994 event pairs, 56 based on Foata normal form. 1/687 useless extension candidates. Maximal degree in co-relation 5648. Up to 564 conditions per place. [2024-06-21 18:51:07,332 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 126 selfloop transitions, 49 changer transitions 0/178 dead transitions. [2024-06-21 18:51:07,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 178 transitions, 2063 flow [2024-06-21 18:51:07,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:51:07,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:51:07,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-21 18:51:07,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-21 18:51:07,333 INFO L175 Difference]: Start difference. First operand has 184 places, 166 transitions, 1537 flow. Second operand 9 states and 121 transitions. [2024-06-21 18:51:07,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 178 transitions, 2063 flow [2024-06-21 18:51:07,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 178 transitions, 1942 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-21 18:51:07,419 INFO L231 Difference]: Finished difference. Result has 187 places, 168 transitions, 1555 flow [2024-06-21 18:51:07,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1555, PETRI_PLACES=187, PETRI_TRANSITIONS=168} [2024-06-21 18:51:07,419 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 155 predicate places. [2024-06-21 18:51:07,419 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 168 transitions, 1555 flow [2024-06-21 18:51:07,420 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) [2024-06-21 18:51:07,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:07,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:07,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-21 18:51:07,420 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:07,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:07,420 INFO L85 PathProgramCache]: Analyzing trace with hash 43849498, now seen corresponding path program 2 times [2024-06-21 18:51:07,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:07,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992267986] [2024-06-21 18:51:07,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:07,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:08,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:08,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:08,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992267986] [2024-06-21 18:51:08,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992267986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:08,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:08,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:08,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282833949] [2024-06-21 18:51:08,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:08,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:08,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:08,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:08,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:08,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:51:08,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 168 transitions, 1555 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) [2024-06-21 18:51:08,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:08,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:51:08,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:08,996 INFO L124 PetriNetUnfolderBase]: 391/700 cut-off events. [2024-06-21 18:51:08,996 INFO L125 PetriNetUnfolderBase]: For 73595/73595 co-relation queries the response was YES. [2024-06-21 18:51:08,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5875 conditions, 700 events. 391/700 cut-off events. For 73595/73595 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3064 event pairs, 52 based on Foata normal form. 1/700 useless extension candidates. Maximal degree in co-relation 5786. Up to 611 conditions per place. [2024-06-21 18:51:09,001 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 146 selfloop transitions, 33 changer transitions 0/182 dead transitions. [2024-06-21 18:51:09,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 182 transitions, 2107 flow [2024-06-21 18:51:09,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:51:09,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:51:09,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-21 18:51:09,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4006734006734007 [2024-06-21 18:51:09,003 INFO L175 Difference]: Start difference. First operand has 187 places, 168 transitions, 1555 flow. Second operand 9 states and 119 transitions. [2024-06-21 18:51:09,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 182 transitions, 2107 flow [2024-06-21 18:51:09,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 182 transitions, 2010 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-21 18:51:09,100 INFO L231 Difference]: Finished difference. Result has 190 places, 172 transitions, 1585 flow [2024-06-21 18:51:09,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1458, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1585, PETRI_PLACES=190, PETRI_TRANSITIONS=172} [2024-06-21 18:51:09,102 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 158 predicate places. [2024-06-21 18:51:09,102 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 172 transitions, 1585 flow [2024-06-21 18:51:09,102 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) [2024-06-21 18:51:09,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:09,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:09,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-21 18:51:09,103 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:09,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:09,103 INFO L85 PathProgramCache]: Analyzing trace with hash 43849250, now seen corresponding path program 6 times [2024-06-21 18:51:09,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:09,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489447744] [2024-06-21 18:51:09,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:09,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:10,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:10,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:10,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489447744] [2024-06-21 18:51:10,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489447744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:10,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:10,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:10,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407705948] [2024-06-21 18:51:10,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:10,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:10,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:10,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:10,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:10,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:51:10,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 172 transitions, 1585 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) [2024-06-21 18:51:10,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:10,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:51:10,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:10,632 INFO L124 PetriNetUnfolderBase]: 389/697 cut-off events. [2024-06-21 18:51:10,632 INFO L125 PetriNetUnfolderBase]: For 74273/74273 co-relation queries the response was YES. [2024-06-21 18:51:10,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5833 conditions, 697 events. 389/697 cut-off events. For 74273/74273 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3051 event pairs, 56 based on Foata normal form. 1/697 useless extension candidates. Maximal degree in co-relation 5743. Up to 575 conditions per place. [2024-06-21 18:51:10,637 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 132 selfloop transitions, 46 changer transitions 0/181 dead transitions. [2024-06-21 18:51:10,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 181 transitions, 1963 flow [2024-06-21 18:51:10,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:51:10,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:51:10,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-21 18:51:10,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107744107744108 [2024-06-21 18:51:10,638 INFO L175 Difference]: Start difference. First operand has 190 places, 172 transitions, 1585 flow. Second operand 9 states and 122 transitions. [2024-06-21 18:51:10,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 181 transitions, 1963 flow [2024-06-21 18:51:10,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 181 transitions, 1887 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-21 18:51:10,735 INFO L231 Difference]: Finished difference. Result has 194 places, 172 transitions, 1606 flow [2024-06-21 18:51:10,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1606, PETRI_PLACES=194, PETRI_TRANSITIONS=172} [2024-06-21 18:51:10,736 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 162 predicate places. [2024-06-21 18:51:10,736 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 172 transitions, 1606 flow [2024-06-21 18:51:10,736 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) [2024-06-21 18:51:10,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:10,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:10,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-21 18:51:10,736 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:10,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:10,736 INFO L85 PathProgramCache]: Analyzing trace with hash 44088508, now seen corresponding path program 3 times [2024-06-21 18:51:10,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:10,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718470460] [2024-06-21 18:51:10,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:10,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:11,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:11,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:11,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718470460] [2024-06-21 18:51:11,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718470460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:11,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:11,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:11,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460939882] [2024-06-21 18:51:11,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:11,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:11,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:11,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:11,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:12,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:51:12,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 172 transitions, 1606 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) [2024-06-21 18:51:12,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:12,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:51:12,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:12,316 INFO L124 PetriNetUnfolderBase]: 392/702 cut-off events. [2024-06-21 18:51:12,316 INFO L125 PetriNetUnfolderBase]: For 76744/76744 co-relation queries the response was YES. [2024-06-21 18:51:12,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5947 conditions, 702 events. 392/702 cut-off events. For 76744/76744 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3079 event pairs, 52 based on Foata normal form. 1/702 useless extension candidates. Maximal degree in co-relation 5855. Up to 612 conditions per place. [2024-06-21 18:51:12,321 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 143 selfloop transitions, 38 changer transitions 0/184 dead transitions. [2024-06-21 18:51:12,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 184 transitions, 2142 flow [2024-06-21 18:51:12,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:51:12,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:51:12,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-21 18:51:12,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-21 18:51:12,322 INFO L175 Difference]: Start difference. First operand has 194 places, 172 transitions, 1606 flow. Second operand 9 states and 117 transitions. [2024-06-21 18:51:12,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 184 transitions, 2142 flow [2024-06-21 18:51:12,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 184 transitions, 2024 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 18:51:12,423 INFO L231 Difference]: Finished difference. Result has 194 places, 174 transitions, 1597 flow [2024-06-21 18:51:12,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1597, PETRI_PLACES=194, PETRI_TRANSITIONS=174} [2024-06-21 18:51:12,424 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 162 predicate places. [2024-06-21 18:51:12,424 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 174 transitions, 1597 flow [2024-06-21 18:51:12,424 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) [2024-06-21 18:51:12,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:12,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:12,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-21 18:51:12,424 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:12,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:12,425 INFO L85 PathProgramCache]: Analyzing trace with hash 44080138, now seen corresponding path program 4 times [2024-06-21 18:51:12,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:12,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108457199] [2024-06-21 18:51:12,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:12,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:13,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:13,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:13,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108457199] [2024-06-21 18:51:13,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108457199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:13,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:13,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:13,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259672830] [2024-06-21 18:51:13,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:13,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:13,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:13,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:13,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:13,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:51:13,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 174 transitions, 1597 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) [2024-06-21 18:51:13,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:13,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:51:13,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:13,961 INFO L124 PetriNetUnfolderBase]: 390/699 cut-off events. [2024-06-21 18:51:13,961 INFO L125 PetriNetUnfolderBase]: For 77242/77242 co-relation queries the response was YES. [2024-06-21 18:51:13,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5880 conditions, 699 events. 390/699 cut-off events. For 77242/77242 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3074 event pairs, 52 based on Foata normal form. 1/699 useless extension candidates. Maximal degree in co-relation 5787. Up to 610 conditions per place. [2024-06-21 18:51:13,966 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 144 selfloop transitions, 36 changer transitions 0/183 dead transitions. [2024-06-21 18:51:13,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 183 transitions, 1979 flow [2024-06-21 18:51:13,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:51:13,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:51:13,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-21 18:51:13,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-21 18:51:13,967 INFO L175 Difference]: Start difference. First operand has 194 places, 174 transitions, 1597 flow. Second operand 9 states and 117 transitions. [2024-06-21 18:51:13,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 183 transitions, 1979 flow [2024-06-21 18:51:14,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 183 transitions, 1878 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-21 18:51:14,075 INFO L231 Difference]: Finished difference. Result has 197 places, 174 transitions, 1573 flow [2024-06-21 18:51:14,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1496, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1573, PETRI_PLACES=197, PETRI_TRANSITIONS=174} [2024-06-21 18:51:14,075 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 165 predicate places. [2024-06-21 18:51:14,075 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 174 transitions, 1573 flow [2024-06-21 18:51:14,076 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) [2024-06-21 18:51:14,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:14,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:14,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-21 18:51:14,076 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:14,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:14,076 INFO L85 PathProgramCache]: Analyzing trace with hash 44088818, now seen corresponding path program 1 times [2024-06-21 18:51:14,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:14,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165179588] [2024-06-21 18:51:14,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:14,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:15,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:15,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:15,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165179588] [2024-06-21 18:51:15,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165179588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:15,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:15,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:15,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198755183] [2024-06-21 18:51:15,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:15,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:15,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:15,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:15,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:15,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-21 18:51:15,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 174 transitions, 1573 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:15,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:15,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-21 18:51:15,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:15,684 INFO L124 PetriNetUnfolderBase]: 370/677 cut-off events. [2024-06-21 18:51:15,684 INFO L125 PetriNetUnfolderBase]: For 80095/80096 co-relation queries the response was YES. [2024-06-21 18:51:15,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5734 conditions, 677 events. 370/677 cut-off events. For 80095/80096 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3043 event pairs, 51 based on Foata normal form. 2/675 useless extension candidates. Maximal degree in co-relation 5640. Up to 561 conditions per place. [2024-06-21 18:51:15,689 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 135 selfloop transitions, 23 changer transitions 0/186 dead transitions. [2024-06-21 18:51:15,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 186 transitions, 1933 flow [2024-06-21 18:51:15,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:51:15,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:51:15,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2024-06-21 18:51:15,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-21 18:51:15,690 INFO L175 Difference]: Start difference. First operand has 197 places, 174 transitions, 1573 flow. Second operand 8 states and 117 transitions. [2024-06-21 18:51:15,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 186 transitions, 1933 flow [2024-06-21 18:51:15,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 186 transitions, 1842 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 18:51:15,800 INFO L231 Difference]: Finished difference. Result has 196 places, 176 transitions, 1558 flow [2024-06-21 18:51:15,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1482, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1558, PETRI_PLACES=196, PETRI_TRANSITIONS=176} [2024-06-21 18:51:15,801 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 164 predicate places. [2024-06-21 18:51:15,801 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 176 transitions, 1558 flow [2024-06-21 18:51:15,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:15,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:15,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:15,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-21 18:51:15,801 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:15,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:15,802 INFO L85 PathProgramCache]: Analyzing trace with hash 85732860, now seen corresponding path program 5 times [2024-06-21 18:51:15,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:15,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563797869] [2024-06-21 18:51:15,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:15,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:17,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:17,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:17,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563797869] [2024-06-21 18:51:17,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563797869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:17,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:17,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:17,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612174792] [2024-06-21 18:51:17,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:17,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:17,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:17,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:17,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:17,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:51:17,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 176 transitions, 1558 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) [2024-06-21 18:51:17,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:17,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:51:17,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:17,370 INFO L124 PetriNetUnfolderBase]: 401/717 cut-off events. [2024-06-21 18:51:17,370 INFO L125 PetriNetUnfolderBase]: For 83772/83772 co-relation queries the response was YES. [2024-06-21 18:51:17,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6110 conditions, 717 events. 401/717 cut-off events. For 83772/83772 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3167 event pairs, 55 based on Foata normal form. 1/717 useless extension candidates. Maximal degree in co-relation 6016. Up to 532 conditions per place. [2024-06-21 18:51:17,375 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 122 selfloop transitions, 67 changer transitions 0/192 dead transitions. [2024-06-21 18:51:17,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 192 transitions, 2304 flow [2024-06-21 18:51:17,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:51:17,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:51:17,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-21 18:51:17,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-21 18:51:17,377 INFO L175 Difference]: Start difference. First operand has 196 places, 176 transitions, 1558 flow. Second operand 9 states and 120 transitions. [2024-06-21 18:51:17,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 192 transitions, 2304 flow [2024-06-21 18:51:17,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 192 transitions, 2246 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-21 18:51:17,493 INFO L231 Difference]: Finished difference. Result has 199 places, 182 transitions, 1733 flow [2024-06-21 18:51:17,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1500, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1733, PETRI_PLACES=199, PETRI_TRANSITIONS=182} [2024-06-21 18:51:17,493 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 167 predicate places. [2024-06-21 18:51:17,493 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 182 transitions, 1733 flow [2024-06-21 18:51:17,494 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) [2024-06-21 18:51:17,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:17,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:17,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-21 18:51:17,494 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:17,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:17,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1741043842, now seen corresponding path program 7 times [2024-06-21 18:51:17,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:17,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756339801] [2024-06-21 18:51:17,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:17,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:18,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:18,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:18,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756339801] [2024-06-21 18:51:18,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756339801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:18,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:18,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:18,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243692080] [2024-06-21 18:51:18,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:18,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:18,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:18,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:18,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:18,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:51:18,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 182 transitions, 1733 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) [2024-06-21 18:51:18,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:18,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:51:18,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:19,004 INFO L124 PetriNetUnfolderBase]: 404/722 cut-off events. [2024-06-21 18:51:19,004 INFO L125 PetriNetUnfolderBase]: For 86716/86716 co-relation queries the response was YES. [2024-06-21 18:51:19,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6293 conditions, 722 events. 404/722 cut-off events. For 86716/86716 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3188 event pairs, 61 based on Foata normal form. 1/722 useless extension candidates. Maximal degree in co-relation 6197. Up to 494 conditions per place. [2024-06-21 18:51:19,009 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 107 selfloop transitions, 85 changer transitions 0/195 dead transitions. [2024-06-21 18:51:19,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 195 transitions, 2331 flow [2024-06-21 18:51:19,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:51:19,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:51:19,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-21 18:51:19,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-21 18:51:19,011 INFO L175 Difference]: Start difference. First operand has 199 places, 182 transitions, 1733 flow. Second operand 9 states and 120 transitions. [2024-06-21 18:51:19,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 195 transitions, 2331 flow [2024-06-21 18:51:19,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 195 transitions, 2243 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-21 18:51:19,163 INFO L231 Difference]: Finished difference. Result has 204 places, 186 transitions, 1888 flow [2024-06-21 18:51:19,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1645, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1888, PETRI_PLACES=204, PETRI_TRANSITIONS=186} [2024-06-21 18:51:19,164 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 172 predicate places. [2024-06-21 18:51:19,164 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 186 transitions, 1888 flow [2024-06-21 18:51:19,164 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) [2024-06-21 18:51:19,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:19,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:19,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-21 18:51:19,164 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:19,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:19,164 INFO L85 PathProgramCache]: Analyzing trace with hash -339557350, now seen corresponding path program 6 times [2024-06-21 18:51:19,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:19,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174259674] [2024-06-21 18:51:19,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:19,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:20,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:20,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:20,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174259674] [2024-06-21 18:51:20,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174259674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:20,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:20,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:20,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900449218] [2024-06-21 18:51:20,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:20,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:20,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:20,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:20,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:20,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:51:20,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 186 transitions, 1888 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) [2024-06-21 18:51:20,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:20,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:51:20,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:20,754 INFO L124 PetriNetUnfolderBase]: 407/727 cut-off events. [2024-06-21 18:51:20,754 INFO L125 PetriNetUnfolderBase]: For 89407/89407 co-relation queries the response was YES. [2024-06-21 18:51:20,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6479 conditions, 727 events. 407/727 cut-off events. For 89407/89407 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3210 event pairs, 55 based on Foata normal form. 1/727 useless extension candidates. Maximal degree in co-relation 6381. Up to 541 conditions per place. [2024-06-21 18:51:20,759 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 127 selfloop transitions, 68 changer transitions 0/198 dead transitions. [2024-06-21 18:51:20,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 198 transitions, 2590 flow [2024-06-21 18:51:20,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:51:20,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:51:20,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-21 18:51:20,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-21 18:51:20,760 INFO L175 Difference]: Start difference. First operand has 204 places, 186 transitions, 1888 flow. Second operand 9 states and 121 transitions. [2024-06-21 18:51:20,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 198 transitions, 2590 flow [2024-06-21 18:51:20,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 198 transitions, 2484 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-21 18:51:20,951 INFO L231 Difference]: Finished difference. Result has 208 places, 188 transitions, 1949 flow [2024-06-21 18:51:20,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1782, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1949, PETRI_PLACES=208, PETRI_TRANSITIONS=188} [2024-06-21 18:51:20,951 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 176 predicate places. [2024-06-21 18:51:20,952 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 188 transitions, 1949 flow [2024-06-21 18:51:20,952 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) [2024-06-21 18:51:20,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:20,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:20,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-21 18:51:20,952 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:20,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:20,953 INFO L85 PathProgramCache]: Analyzing trace with hash -329081520, now seen corresponding path program 2 times [2024-06-21 18:51:20,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:20,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485971852] [2024-06-21 18:51:20,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:20,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:22,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:22,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:22,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485971852] [2024-06-21 18:51:22,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485971852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:22,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:22,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:22,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222122892] [2024-06-21 18:51:22,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:22,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:22,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:22,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:22,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:22,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:51:22,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 188 transitions, 1949 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:22,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:22,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:51:22,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:22,691 INFO L124 PetriNetUnfolderBase]: 387/704 cut-off events. [2024-06-21 18:51:22,691 INFO L125 PetriNetUnfolderBase]: For 92611/92612 co-relation queries the response was YES. [2024-06-21 18:51:22,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6406 conditions, 704 events. 387/704 cut-off events. For 92611/92612 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3184 event pairs, 62 based on Foata normal form. 2/700 useless extension candidates. Maximal degree in co-relation 6306. Up to 601 conditions per place. [2024-06-21 18:51:22,697 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 150 selfloop transitions, 16 changer transitions 0/198 dead transitions. [2024-06-21 18:51:22,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 198 transitions, 2323 flow [2024-06-21 18:51:22,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:51:22,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:51:22,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-21 18:51:22,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3872053872053872 [2024-06-21 18:51:22,698 INFO L175 Difference]: Start difference. First operand has 208 places, 188 transitions, 1949 flow. Second operand 9 states and 115 transitions. [2024-06-21 18:51:22,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 198 transitions, 2323 flow [2024-06-21 18:51:22,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 198 transitions, 2180 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-21 18:51:22,880 INFO L231 Difference]: Finished difference. Result has 211 places, 190 transitions, 1871 flow [2024-06-21 18:51:22,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1806, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1871, PETRI_PLACES=211, PETRI_TRANSITIONS=190} [2024-06-21 18:51:22,880 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 179 predicate places. [2024-06-21 18:51:22,880 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 190 transitions, 1871 flow [2024-06-21 18:51:22,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:22,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:22,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:22,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-21 18:51:22,881 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:22,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:22,881 INFO L85 PathProgramCache]: Analyzing trace with hash -329437710, now seen corresponding path program 3 times [2024-06-21 18:51:22,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:22,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970622174] [2024-06-21 18:51:22,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:22,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:24,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:24,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:24,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970622174] [2024-06-21 18:51:24,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970622174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:24,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:24,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:24,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060582431] [2024-06-21 18:51:24,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:24,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:24,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:24,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:24,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:24,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-21 18:51:24,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 190 transitions, 1871 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:24,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:24,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-21 18:51:24,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:24,536 INFO L124 PetriNetUnfolderBase]: 389/710 cut-off events. [2024-06-21 18:51:24,536 INFO L125 PetriNetUnfolderBase]: For 95029/95030 co-relation queries the response was YES. [2024-06-21 18:51:24,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6406 conditions, 710 events. 389/710 cut-off events. For 95029/95030 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3240 event pairs, 53 based on Foata normal form. 2/708 useless extension candidates. Maximal degree in co-relation 6305. Up to 544 conditions per place. [2024-06-21 18:51:24,543 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 131 selfloop transitions, 40 changer transitions 0/203 dead transitions. [2024-06-21 18:51:24,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 203 transitions, 2425 flow [2024-06-21 18:51:24,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:51:24,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:51:24,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-21 18:51:24,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-21 18:51:24,544 INFO L175 Difference]: Start difference. First operand has 211 places, 190 transitions, 1871 flow. Second operand 8 states and 121 transitions. [2024-06-21 18:51:24,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 203 transitions, 2425 flow [2024-06-21 18:51:24,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 203 transitions, 2376 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-21 18:51:24,702 INFO L231 Difference]: Finished difference. Result has 212 places, 194 transitions, 1967 flow [2024-06-21 18:51:24,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1967, PETRI_PLACES=212, PETRI_TRANSITIONS=194} [2024-06-21 18:51:24,703 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 180 predicate places. [2024-06-21 18:51:24,703 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 194 transitions, 1967 flow [2024-06-21 18:51:24,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:24,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:24,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:24,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-21 18:51:24,704 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:24,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:24,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1732769632, now seen corresponding path program 8 times [2024-06-21 18:51:24,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:24,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90981197] [2024-06-21 18:51:24,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:24,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:25,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:25,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:25,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90981197] [2024-06-21 18:51:25,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90981197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:25,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:25,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:25,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384334311] [2024-06-21 18:51:25,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:25,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:25,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:25,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:25,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:26,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:51:26,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 194 transitions, 1967 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) [2024-06-21 18:51:26,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:26,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:51:26,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:26,285 INFO L124 PetriNetUnfolderBase]: 426/758 cut-off events. [2024-06-21 18:51:26,285 INFO L125 PetriNetUnfolderBase]: For 102097/102097 co-relation queries the response was YES. [2024-06-21 18:51:26,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7001 conditions, 758 events. 426/758 cut-off events. For 102097/102097 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3351 event pairs, 61 based on Foata normal form. 1/758 useless extension candidates. Maximal degree in co-relation 6900. Up to 525 conditions per place. [2024-06-21 18:51:26,292 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 132 selfloop transitions, 76 changer transitions 0/211 dead transitions. [2024-06-21 18:51:26,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 211 transitions, 2923 flow [2024-06-21 18:51:26,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:51:26,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:51:26,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-21 18:51:26,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175084175084175 [2024-06-21 18:51:26,293 INFO L175 Difference]: Start difference. First operand has 212 places, 194 transitions, 1967 flow. Second operand 9 states and 124 transitions. [2024-06-21 18:51:26,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 211 transitions, 2923 flow [2024-06-21 18:51:26,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 211 transitions, 2859 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-21 18:51:26,467 INFO L231 Difference]: Finished difference. Result has 217 places, 200 transitions, 2162 flow [2024-06-21 18:51:26,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1903, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2162, PETRI_PLACES=217, PETRI_TRANSITIONS=200} [2024-06-21 18:51:26,468 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 185 predicate places. [2024-06-21 18:51:26,468 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 200 transitions, 2162 flow [2024-06-21 18:51:26,468 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) [2024-06-21 18:51:26,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:26,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:26,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-21 18:51:26,468 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:26,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:26,468 INFO L85 PathProgramCache]: Analyzing trace with hash -564516462, now seen corresponding path program 4 times [2024-06-21 18:51:26,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:26,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447662515] [2024-06-21 18:51:26,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:26,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:27,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:27,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:27,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447662515] [2024-06-21 18:51:27,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447662515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:27,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:27,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:27,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446564358] [2024-06-21 18:51:27,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:27,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:27,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:27,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:27,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:27,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-21 18:51:27,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 200 transitions, 2162 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:27,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:27,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-21 18:51:27,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:28,135 INFO L124 PetriNetUnfolderBase]: 404/735 cut-off events. [2024-06-21 18:51:28,135 INFO L125 PetriNetUnfolderBase]: For 106079/106080 co-relation queries the response was YES. [2024-06-21 18:51:28,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6997 conditions, 735 events. 404/735 cut-off events. For 106079/106080 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3360 event pairs, 53 based on Foata normal form. 2/733 useless extension candidates. Maximal degree in co-relation 6893. Up to 568 conditions per place. [2024-06-21 18:51:28,142 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 140 selfloop transitions, 39 changer transitions 0/211 dead transitions. [2024-06-21 18:51:28,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 211 transitions, 2708 flow [2024-06-21 18:51:28,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:51:28,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:51:28,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 122 transitions. [2024-06-21 18:51:28,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-21 18:51:28,143 INFO L175 Difference]: Start difference. First operand has 217 places, 200 transitions, 2162 flow. Second operand 8 states and 122 transitions. [2024-06-21 18:51:28,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 211 transitions, 2708 flow [2024-06-21 18:51:28,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 211 transitions, 2584 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-21 18:51:28,329 INFO L231 Difference]: Finished difference. Result has 221 places, 202 transitions, 2149 flow [2024-06-21 18:51:28,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2038, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2149, PETRI_PLACES=221, PETRI_TRANSITIONS=202} [2024-06-21 18:51:28,330 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 189 predicate places. [2024-06-21 18:51:28,330 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 202 transitions, 2149 flow [2024-06-21 18:51:28,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:28,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:28,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:28,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-21 18:51:28,330 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:28,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:28,331 INFO L85 PathProgramCache]: Analyzing trace with hash -554397442, now seen corresponding path program 7 times [2024-06-21 18:51:28,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:28,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655197581] [2024-06-21 18:51:28,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:28,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:28,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:29,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:29,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:29,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655197581] [2024-06-21 18:51:29,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655197581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:29,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:29,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:29,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900116807] [2024-06-21 18:51:29,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:29,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:29,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:29,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:29,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:29,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:51:29,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 202 transitions, 2149 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) [2024-06-21 18:51:29,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:29,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:51:29,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:29,921 INFO L124 PetriNetUnfolderBase]: 427/760 cut-off events. [2024-06-21 18:51:29,921 INFO L125 PetriNetUnfolderBase]: For 105471/105471 co-relation queries the response was YES. [2024-06-21 18:51:29,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7062 conditions, 760 events. 427/760 cut-off events. For 105471/105471 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3397 event pairs, 55 based on Foata normal form. 1/760 useless extension candidates. Maximal degree in co-relation 6958. Up to 575 conditions per place. [2024-06-21 18:51:29,927 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 128 selfloop transitions, 80 changer transitions 0/211 dead transitions. [2024-06-21 18:51:29,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 211 transitions, 2727 flow [2024-06-21 18:51:29,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:51:29,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:51:29,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-21 18:51:29,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39730639730639733 [2024-06-21 18:51:29,928 INFO L175 Difference]: Start difference. First operand has 221 places, 202 transitions, 2149 flow. Second operand 9 states and 118 transitions. [2024-06-21 18:51:29,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 211 transitions, 2727 flow [2024-06-21 18:51:30,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 211 transitions, 2634 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-21 18:51:30,127 INFO L231 Difference]: Finished difference. Result has 225 places, 202 transitions, 2221 flow [2024-06-21 18:51:30,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2221, PETRI_PLACES=225, PETRI_TRANSITIONS=202} [2024-06-21 18:51:30,128 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 193 predicate places. [2024-06-21 18:51:30,128 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 202 transitions, 2221 flow [2024-06-21 18:51:30,128 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) [2024-06-21 18:51:30,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:30,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:30,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-21 18:51:30,128 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:30,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:30,129 INFO L85 PathProgramCache]: Analyzing trace with hash -849625012, now seen corresponding path program 8 times [2024-06-21 18:51:30,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:30,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250302924] [2024-06-21 18:51:30,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:30,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:31,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:31,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:31,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250302924] [2024-06-21 18:51:31,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250302924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:31,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:31,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:31,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900789622] [2024-06-21 18:51:31,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:31,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:31,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:31,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:31,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:31,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:51:31,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 202 transitions, 2221 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) [2024-06-21 18:51:31,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:31,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:51:31,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:31,715 INFO L124 PetriNetUnfolderBase]: 440/781 cut-off events. [2024-06-21 18:51:31,715 INFO L125 PetriNetUnfolderBase]: For 113849/113849 co-relation queries the response was YES. [2024-06-21 18:51:31,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7475 conditions, 781 events. 440/781 cut-off events. For 113849/113849 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3510 event pairs, 55 based on Foata normal form. 1/781 useless extension candidates. Maximal degree in co-relation 7369. Up to 591 conditions per place. [2024-06-21 18:51:31,721 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 149 selfloop transitions, 67 changer transitions 0/219 dead transitions. [2024-06-21 18:51:31,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 219 transitions, 3217 flow [2024-06-21 18:51:31,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:51:31,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:51:31,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-21 18:51:31,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175084175084175 [2024-06-21 18:51:31,723 INFO L175 Difference]: Start difference. First operand has 225 places, 202 transitions, 2221 flow. Second operand 9 states and 124 transitions. [2024-06-21 18:51:31,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 219 transitions, 3217 flow [2024-06-21 18:51:31,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 219 transitions, 3062 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 18:51:31,933 INFO L231 Difference]: Finished difference. Result has 226 places, 208 transitions, 2313 flow [2024-06-21 18:51:31,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2078, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2313, PETRI_PLACES=226, PETRI_TRANSITIONS=208} [2024-06-21 18:51:31,933 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 194 predicate places. [2024-06-21 18:51:31,934 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 208 transitions, 2313 flow [2024-06-21 18:51:31,934 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) [2024-06-21 18:51:31,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:31,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:31,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-21 18:51:31,934 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:31,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:31,934 INFO L85 PathProgramCache]: Analyzing trace with hash -849855652, now seen corresponding path program 9 times [2024-06-21 18:51:31,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:31,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403424553] [2024-06-21 18:51:31,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:31,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:33,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:33,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:33,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403424553] [2024-06-21 18:51:33,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403424553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:33,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:33,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:33,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773222276] [2024-06-21 18:51:33,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:33,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:33,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:33,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:33,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:33,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:51:33,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 208 transitions, 2313 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) [2024-06-21 18:51:33,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:33,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:51:33,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:33,571 INFO L124 PetriNetUnfolderBase]: 438/778 cut-off events. [2024-06-21 18:51:33,572 INFO L125 PetriNetUnfolderBase]: For 114414/114414 co-relation queries the response was YES. [2024-06-21 18:51:33,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7400 conditions, 778 events. 438/778 cut-off events. For 114414/114414 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3486 event pairs, 55 based on Foata normal form. 1/778 useless extension candidates. Maximal degree in co-relation 7293. Up to 589 conditions per place. [2024-06-21 18:51:33,599 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 145 selfloop transitions, 70 changer transitions 0/218 dead transitions. [2024-06-21 18:51:33,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 218 transitions, 3057 flow [2024-06-21 18:51:33,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:51:33,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:51:33,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-21 18:51:33,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-21 18:51:33,606 INFO L175 Difference]: Start difference. First operand has 226 places, 208 transitions, 2313 flow. Second operand 9 states and 121 transitions. [2024-06-21 18:51:33,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 218 transitions, 3057 flow [2024-06-21 18:51:33,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 218 transitions, 2926 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-21 18:51:33,811 INFO L231 Difference]: Finished difference. Result has 231 places, 208 transitions, 2327 flow [2024-06-21 18:51:33,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2182, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2327, PETRI_PLACES=231, PETRI_TRANSITIONS=208} [2024-06-21 18:51:33,811 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 199 predicate places. [2024-06-21 18:51:33,812 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 208 transitions, 2327 flow [2024-06-21 18:51:33,812 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) [2024-06-21 18:51:33,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:33,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:33,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-21 18:51:33,812 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:33,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:33,813 INFO L85 PathProgramCache]: Analyzing trace with hash -849862596, now seen corresponding path program 5 times [2024-06-21 18:51:33,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:33,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489230885] [2024-06-21 18:51:33,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:33,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:35,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:35,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:35,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489230885] [2024-06-21 18:51:35,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489230885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:35,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:35,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:35,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718374140] [2024-06-21 18:51:35,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:35,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:35,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:35,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:35,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:35,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:51:35,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 208 transitions, 2327 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:35,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:35,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:51:35,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:35,531 INFO L124 PetriNetUnfolderBase]: 421/764 cut-off events. [2024-06-21 18:51:35,532 INFO L125 PetriNetUnfolderBase]: For 118214/118214 co-relation queries the response was YES. [2024-06-21 18:51:35,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7357 conditions, 764 events. 421/764 cut-off events. For 118214/118214 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3510 event pairs, 62 based on Foata normal form. 1/764 useless extension candidates. Maximal degree in co-relation 7249. Up to 535 conditions per place. [2024-06-21 18:51:35,539 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 128 selfloop transitions, 61 changer transitions 0/219 dead transitions. [2024-06-21 18:51:35,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 219 transitions, 2913 flow [2024-06-21 18:51:35,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:51:35,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:51:35,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-21 18:51:35,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121212121212121 [2024-06-21 18:51:35,540 INFO L175 Difference]: Start difference. First operand has 231 places, 208 transitions, 2327 flow. Second operand 10 states and 136 transitions. [2024-06-21 18:51:35,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 219 transitions, 2913 flow [2024-06-21 18:51:35,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 219 transitions, 2766 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-21 18:51:35,738 INFO L231 Difference]: Finished difference. Result has 233 places, 210 transitions, 2351 flow [2024-06-21 18:51:35,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2180, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2351, PETRI_PLACES=233, PETRI_TRANSITIONS=210} [2024-06-21 18:51:35,738 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 201 predicate places. [2024-06-21 18:51:35,738 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 210 transitions, 2351 flow [2024-06-21 18:51:35,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:35,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:35,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:35,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-21 18:51:35,739 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:35,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:35,739 INFO L85 PathProgramCache]: Analyzing trace with hash -849616642, now seen corresponding path program 10 times [2024-06-21 18:51:35,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:35,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491114618] [2024-06-21 18:51:35,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:35,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:37,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:37,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:37,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491114618] [2024-06-21 18:51:37,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491114618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:37,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:37,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:37,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230313410] [2024-06-21 18:51:37,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:37,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:37,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:37,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:37,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:37,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:51:37,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 210 transitions, 2351 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) [2024-06-21 18:51:37,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:37,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:51:37,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:37,364 INFO L124 PetriNetUnfolderBase]: 439/782 cut-off events. [2024-06-21 18:51:37,364 INFO L125 PetriNetUnfolderBase]: For 119428/119428 co-relation queries the response was YES. [2024-06-21 18:51:37,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7431 conditions, 782 events. 439/782 cut-off events. For 119428/119428 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3536 event pairs, 67 based on Foata normal form. 1/782 useless extension candidates. Maximal degree in co-relation 7322. Up to 592 conditions per place. [2024-06-21 18:51:37,372 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 148 selfloop transitions, 68 changer transitions 0/219 dead transitions. [2024-06-21 18:51:37,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 219 transitions, 2953 flow [2024-06-21 18:51:37,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:51:37,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:51:37,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-21 18:51:37,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-21 18:51:37,373 INFO L175 Difference]: Start difference. First operand has 233 places, 210 transitions, 2351 flow. Second operand 9 states and 121 transitions. [2024-06-21 18:51:37,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 219 transitions, 2953 flow [2024-06-21 18:51:37,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 219 transitions, 2782 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-21 18:51:37,586 INFO L231 Difference]: Finished difference. Result has 234 places, 210 transitions, 2321 flow [2024-06-21 18:51:37,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2180, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2321, PETRI_PLACES=234, PETRI_TRANSITIONS=210} [2024-06-21 18:51:37,587 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 202 predicate places. [2024-06-21 18:51:37,587 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 210 transitions, 2321 flow [2024-06-21 18:51:37,587 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) [2024-06-21 18:51:37,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:37,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:37,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-21 18:51:37,588 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:37,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:37,588 INFO L85 PathProgramCache]: Analyzing trace with hash -849862410, now seen corresponding path program 9 times [2024-06-21 18:51:37,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:37,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510505251] [2024-06-21 18:51:37,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:37,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:38,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:38,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:38,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510505251] [2024-06-21 18:51:38,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510505251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:38,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:38,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:38,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267896113] [2024-06-21 18:51:38,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:38,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:38,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:38,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:38,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:38,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:51:38,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 210 transitions, 2321 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) [2024-06-21 18:51:38,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:38,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:51:38,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:39,169 INFO L124 PetriNetUnfolderBase]: 437/779 cut-off events. [2024-06-21 18:51:39,169 INFO L125 PetriNetUnfolderBase]: For 118025/118025 co-relation queries the response was YES. [2024-06-21 18:51:39,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7350 conditions, 779 events. 437/779 cut-off events. For 118025/118025 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3540 event pairs, 61 based on Foata normal form. 1/779 useless extension candidates. Maximal degree in co-relation 7240. Up to 545 conditions per place. [2024-06-21 18:51:39,176 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 139 selfloop transitions, 78 changer transitions 0/220 dead transitions. [2024-06-21 18:51:39,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 220 transitions, 3081 flow [2024-06-21 18:51:39,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:51:39,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:51:39,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-21 18:51:39,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107744107744108 [2024-06-21 18:51:39,177 INFO L175 Difference]: Start difference. First operand has 234 places, 210 transitions, 2321 flow. Second operand 9 states and 122 transitions. [2024-06-21 18:51:39,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 220 transitions, 3081 flow [2024-06-21 18:51:39,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 220 transitions, 2924 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-21 18:51:39,399 INFO L231 Difference]: Finished difference. Result has 235 places, 210 transitions, 2325 flow [2024-06-21 18:51:39,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2164, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2325, PETRI_PLACES=235, PETRI_TRANSITIONS=210} [2024-06-21 18:51:39,399 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 203 predicate places. [2024-06-21 18:51:39,399 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 210 transitions, 2325 flow [2024-06-21 18:51:39,399 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) [2024-06-21 18:51:39,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:39,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:39,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-21 18:51:39,400 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:39,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:39,400 INFO L85 PathProgramCache]: Analyzing trace with hash -849625260, now seen corresponding path program 10 times [2024-06-21 18:51:39,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:39,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120142975] [2024-06-21 18:51:39,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:39,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:40,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:40,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120142975] [2024-06-21 18:51:40,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120142975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:40,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:40,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:40,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039801457] [2024-06-21 18:51:40,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:40,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:40,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:40,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:40,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:40,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:51:40,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 210 transitions, 2325 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) [2024-06-21 18:51:40,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:40,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:51:40,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:40,987 INFO L124 PetriNetUnfolderBase]: 435/776 cut-off events. [2024-06-21 18:51:40,987 INFO L125 PetriNetUnfolderBase]: For 118156/118156 co-relation queries the response was YES. [2024-06-21 18:51:40,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7300 conditions, 776 events. 435/776 cut-off events. For 118156/118156 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3506 event pairs, 61 based on Foata normal form. 1/776 useless extension candidates. Maximal degree in co-relation 7189. Up to 543 conditions per place. [2024-06-21 18:51:40,994 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 141 selfloop transitions, 75 changer transitions 0/219 dead transitions. [2024-06-21 18:51:40,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 219 transitions, 2931 flow [2024-06-21 18:51:40,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:51:40,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:51:40,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-21 18:51:40,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-21 18:51:40,995 INFO L175 Difference]: Start difference. First operand has 235 places, 210 transitions, 2325 flow. Second operand 9 states and 123 transitions. [2024-06-21 18:51:40,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 219 transitions, 2931 flow [2024-06-21 18:51:41,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 219 transitions, 2762 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-21 18:51:41,224 INFO L231 Difference]: Finished difference. Result has 237 places, 210 transitions, 2311 flow [2024-06-21 18:51:41,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2156, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2311, PETRI_PLACES=237, PETRI_TRANSITIONS=210} [2024-06-21 18:51:41,224 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 205 predicate places. [2024-06-21 18:51:41,225 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 210 transitions, 2311 flow [2024-06-21 18:51:41,225 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) [2024-06-21 18:51:41,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:41,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:41,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-21 18:51:41,225 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:41,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:41,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1733009200, now seen corresponding path program 5 times [2024-06-21 18:51:41,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:41,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549849993] [2024-06-21 18:51:41,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:41,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:42,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:42,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:42,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549849993] [2024-06-21 18:51:42,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549849993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:42,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:42,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:42,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817370631] [2024-06-21 18:51:42,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:42,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:42,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:42,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:42,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:42,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-21 18:51:42,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 210 transitions, 2311 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:42,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:42,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-21 18:51:42,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:42,807 INFO L124 PetriNetUnfolderBase]: 408/745 cut-off events. [2024-06-21 18:51:42,808 INFO L125 PetriNetUnfolderBase]: For 119165/119166 co-relation queries the response was YES. [2024-06-21 18:51:42,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7028 conditions, 745 events. 408/745 cut-off events. For 119165/119166 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3457 event pairs, 53 based on Foata normal form. 2/743 useless extension candidates. Maximal degree in co-relation 6916. Up to 572 conditions per place. [2024-06-21 18:51:42,814 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 146 selfloop transitions, 37 changer transitions 0/218 dead transitions. [2024-06-21 18:51:42,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 218 transitions, 2695 flow [2024-06-21 18:51:42,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:51:42,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:51:42,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 122 transitions. [2024-06-21 18:51:42,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-21 18:51:42,815 INFO L175 Difference]: Start difference. First operand has 237 places, 210 transitions, 2311 flow. Second operand 8 states and 122 transitions. [2024-06-21 18:51:42,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 218 transitions, 2695 flow [2024-06-21 18:51:43,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 218 transitions, 2514 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-21 18:51:43,023 INFO L231 Difference]: Finished difference. Result has 236 places, 210 transitions, 2209 flow [2024-06-21 18:51:43,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2130, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2209, PETRI_PLACES=236, PETRI_TRANSITIONS=210} [2024-06-21 18:51:43,023 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 204 predicate places. [2024-06-21 18:51:43,023 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 210 transitions, 2209 flow [2024-06-21 18:51:43,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:43,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:43,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:43,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-21 18:51:43,024 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:43,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:43,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1311570584, now seen corresponding path program 6 times [2024-06-21 18:51:43,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:43,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262069036] [2024-06-21 18:51:43,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:43,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:44,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:44,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:44,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262069036] [2024-06-21 18:51:44,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262069036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:44,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:44,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:44,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185790998] [2024-06-21 18:51:44,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:44,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:44,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:44,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:44,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:44,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:51:44,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 210 transitions, 2209 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:44,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:44,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:51:44,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:44,654 INFO L124 PetriNetUnfolderBase]: 420/767 cut-off events. [2024-06-21 18:51:44,654 INFO L125 PetriNetUnfolderBase]: For 121613/121613 co-relation queries the response was YES. [2024-06-21 18:51:44,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7143 conditions, 767 events. 420/767 cut-off events. For 121613/121613 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3560 event pairs, 46 based on Foata normal form. 1/767 useless extension candidates. Maximal degree in co-relation 7031. Up to 602 conditions per place. [2024-06-21 18:51:44,661 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 169 selfloop transitions, 30 changer transitions 0/229 dead transitions. [2024-06-21 18:51:44,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 229 transitions, 2710 flow [2024-06-21 18:51:44,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:51:44,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:51:44,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-21 18:51:44,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-21 18:51:44,662 INFO L175 Difference]: Start difference. First operand has 236 places, 210 transitions, 2209 flow. Second operand 10 states and 138 transitions. [2024-06-21 18:51:44,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 229 transitions, 2710 flow [2024-06-21 18:51:44,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 229 transitions, 2593 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 18:51:44,913 INFO L231 Difference]: Finished difference. Result has 238 places, 214 transitions, 2222 flow [2024-06-21 18:51:44,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2092, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2222, PETRI_PLACES=238, PETRI_TRANSITIONS=214} [2024-06-21 18:51:44,914 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 206 predicate places. [2024-06-21 18:51:44,914 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 214 transitions, 2222 flow [2024-06-21 18:51:44,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:44,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:44,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:44,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-21 18:51:44,915 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:44,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:44,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1459621750, now seen corresponding path program 7 times [2024-06-21 18:51:44,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:44,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906473075] [2024-06-21 18:51:44,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:44,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:45,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:45,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:45,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906473075] [2024-06-21 18:51:45,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906473075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:45,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:45,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:45,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708886889] [2024-06-21 18:51:45,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:45,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:45,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:45,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:45,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:45,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:51:45,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 214 transitions, 2222 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:45,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:45,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:51:45,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:46,244 INFO L124 PetriNetUnfolderBase]: 427/782 cut-off events. [2024-06-21 18:51:46,245 INFO L125 PetriNetUnfolderBase]: For 125037/125037 co-relation queries the response was YES. [2024-06-21 18:51:46,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7247 conditions, 782 events. 427/782 cut-off events. For 125037/125037 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3689 event pairs, 48 based on Foata normal form. 1/782 useless extension candidates. Maximal degree in co-relation 7133. Up to 612 conditions per place. [2024-06-21 18:51:46,252 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 169 selfloop transitions, 37 changer transitions 0/236 dead transitions. [2024-06-21 18:51:46,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 236 transitions, 2751 flow [2024-06-21 18:51:46,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:51:46,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:51:46,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-06-21 18:51:46,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377104377104377 [2024-06-21 18:51:46,253 INFO L175 Difference]: Start difference. First operand has 238 places, 214 transitions, 2222 flow. Second operand 9 states and 130 transitions. [2024-06-21 18:51:46,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 236 transitions, 2751 flow [2024-06-21 18:51:46,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 236 transitions, 2663 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-21 18:51:46,479 INFO L231 Difference]: Finished difference. Result has 241 places, 218 transitions, 2286 flow [2024-06-21 18:51:46,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2138, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2286, PETRI_PLACES=241, PETRI_TRANSITIONS=218} [2024-06-21 18:51:46,480 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 209 predicate places. [2024-06-21 18:51:46,480 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 218 transitions, 2286 flow [2024-06-21 18:51:46,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:46,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:46,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:46,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-21 18:51:46,480 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:46,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:46,481 INFO L85 PathProgramCache]: Analyzing trace with hash 163427384, now seen corresponding path program 8 times [2024-06-21 18:51:46,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:46,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470551702] [2024-06-21 18:51:46,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:46,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:47,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:47,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:47,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470551702] [2024-06-21 18:51:47,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470551702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:47,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:47,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:47,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397785255] [2024-06-21 18:51:47,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:47,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:47,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:47,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:47,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:47,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:51:47,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 218 transitions, 2286 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:47,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:47,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:51:47,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:48,002 INFO L124 PetriNetUnfolderBase]: 434/797 cut-off events. [2024-06-21 18:51:48,002 INFO L125 PetriNetUnfolderBase]: For 128348/128348 co-relation queries the response was YES. [2024-06-21 18:51:48,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7388 conditions, 797 events. 434/797 cut-off events. For 128348/128348 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3819 event pairs, 48 based on Foata normal form. 1/797 useless extension candidates. Maximal degree in co-relation 7274. Up to 622 conditions per place. [2024-06-21 18:51:48,010 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 172 selfloop transitions, 37 changer transitions 0/239 dead transitions. [2024-06-21 18:51:48,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 239 transitions, 2823 flow [2024-06-21 18:51:48,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:51:48,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:51:48,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-21 18:51:48,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-21 18:51:48,011 INFO L175 Difference]: Start difference. First operand has 241 places, 218 transitions, 2286 flow. Second operand 10 states and 138 transitions. [2024-06-21 18:51:48,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 239 transitions, 2823 flow [2024-06-21 18:51:48,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 239 transitions, 2702 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-21 18:51:48,274 INFO L231 Difference]: Finished difference. Result has 244 places, 222 transitions, 2321 flow [2024-06-21 18:51:48,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2169, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2321, PETRI_PLACES=244, PETRI_TRANSITIONS=222} [2024-06-21 18:51:48,274 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 212 predicate places. [2024-06-21 18:51:48,274 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 222 transitions, 2321 flow [2024-06-21 18:51:48,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:48,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:48,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:48,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-21 18:51:48,274 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:48,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:48,275 INFO L85 PathProgramCache]: Analyzing trace with hash 163559444, now seen corresponding path program 9 times [2024-06-21 18:51:48,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:48,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529651272] [2024-06-21 18:51:48,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:48,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:49,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:49,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:49,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529651272] [2024-06-21 18:51:49,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529651272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:49,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:49,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:49,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350939973] [2024-06-21 18:51:49,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:49,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:49,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:49,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:49,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:49,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:51:49,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 222 transitions, 2321 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:49,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:49,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:51:49,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:50,075 INFO L124 PetriNetUnfolderBase]: 436/802 cut-off events. [2024-06-21 18:51:50,075 INFO L125 PetriNetUnfolderBase]: For 131405/131405 co-relation queries the response was YES. [2024-06-21 18:51:50,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7425 conditions, 802 events. 436/802 cut-off events. For 131405/131405 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3835 event pairs, 49 based on Foata normal form. 1/802 useless extension candidates. Maximal degree in co-relation 7310. Up to 618 conditions per place. [2024-06-21 18:51:50,082 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 168 selfloop transitions, 42 changer transitions 0/240 dead transitions. [2024-06-21 18:51:50,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 240 transitions, 2827 flow [2024-06-21 18:51:50,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:51:50,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:51:50,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-21 18:51:50,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-21 18:51:50,083 INFO L175 Difference]: Start difference. First operand has 244 places, 222 transitions, 2321 flow. Second operand 10 states and 138 transitions. [2024-06-21 18:51:50,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 240 transitions, 2827 flow [2024-06-21 18:51:50,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 240 transitions, 2731 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-21 18:51:50,330 INFO L231 Difference]: Finished difference. Result has 248 places, 224 transitions, 2362 flow [2024-06-21 18:51:50,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2225, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2362, PETRI_PLACES=248, PETRI_TRANSITIONS=224} [2024-06-21 18:51:50,330 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 216 predicate places. [2024-06-21 18:51:50,330 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 224 transitions, 2362 flow [2024-06-21 18:51:50,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:50,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:50,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:50,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-21 18:51:50,331 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:50,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:50,331 INFO L85 PathProgramCache]: Analyzing trace with hash 163577300, now seen corresponding path program 11 times [2024-06-21 18:51:50,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:50,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279401756] [2024-06-21 18:51:50,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:50,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:51,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:51,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:51,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279401756] [2024-06-21 18:51:51,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279401756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:51,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:51,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:51,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227968880] [2024-06-21 18:51:51,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:51,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:51,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:51,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:51,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:51,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:51:51,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 224 transitions, 2362 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) [2024-06-21 18:51:51,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:51,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:51:51,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:51,630 INFO L124 PetriNetUnfolderBase]: 460/826 cut-off events. [2024-06-21 18:51:51,630 INFO L125 PetriNetUnfolderBase]: For 134004/134004 co-relation queries the response was YES. [2024-06-21 18:51:51,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7640 conditions, 826 events. 460/826 cut-off events. For 134004/134004 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3886 event pairs, 54 based on Foata normal form. 1/823 useless extension candidates. Maximal degree in co-relation 7524. Up to 737 conditions per place. [2024-06-21 18:51:51,638 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 208 selfloop transitions, 31 changer transitions 0/242 dead transitions. [2024-06-21 18:51:51,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 242 transitions, 2918 flow [2024-06-21 18:51:51,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:51:51,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:51:51,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 18:51:51,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-21 18:51:51,639 INFO L175 Difference]: Start difference. First operand has 248 places, 224 transitions, 2362 flow. Second operand 10 states and 126 transitions. [2024-06-21 18:51:51,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 242 transitions, 2918 flow [2024-06-21 18:51:51,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 242 transitions, 2797 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-21 18:51:51,874 INFO L231 Difference]: Finished difference. Result has 250 places, 226 transitions, 2348 flow [2024-06-21 18:51:51,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2241, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2348, PETRI_PLACES=250, PETRI_TRANSITIONS=226} [2024-06-21 18:51:51,875 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 218 predicate places. [2024-06-21 18:51:51,875 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 226 transitions, 2348 flow [2024-06-21 18:51:51,875 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) [2024-06-21 18:51:51,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:51,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:51,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-21 18:51:51,875 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:51,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:51,875 INFO L85 PathProgramCache]: Analyzing trace with hash 377458836, now seen corresponding path program 10 times [2024-06-21 18:51:51,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:51,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952427236] [2024-06-21 18:51:51,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:51,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:52,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:52,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:52,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952427236] [2024-06-21 18:51:52,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952427236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:52,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:52,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:52,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600705410] [2024-06-21 18:51:52,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:52,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:52,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:52,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:52,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:53,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:51:53,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 226 transitions, 2348 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:53,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:53,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:51:53,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:53,404 INFO L124 PetriNetUnfolderBase]: 438/805 cut-off events. [2024-06-21 18:51:53,405 INFO L125 PetriNetUnfolderBase]: For 133895/133895 co-relation queries the response was YES. [2024-06-21 18:51:53,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7395 conditions, 805 events. 438/805 cut-off events. For 133895/133895 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3861 event pairs, 52 based on Foata normal form. 1/805 useless extension candidates. Maximal degree in co-relation 7278. Up to 627 conditions per place. [2024-06-21 18:51:53,411 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 177 selfloop transitions, 34 changer transitions 0/242 dead transitions. [2024-06-21 18:51:53,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 242 transitions, 2814 flow [2024-06-21 18:51:53,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:51:53,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:51:53,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-06-21 18:51:53,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377104377104377 [2024-06-21 18:51:53,412 INFO L175 Difference]: Start difference. First operand has 250 places, 226 transitions, 2348 flow. Second operand 9 states and 130 transitions. [2024-06-21 18:51:53,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 242 transitions, 2814 flow [2024-06-21 18:51:53,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 242 transitions, 2727 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-21 18:51:53,700 INFO L231 Difference]: Finished difference. Result has 251 places, 226 transitions, 2334 flow [2024-06-21 18:51:53,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2261, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2334, PETRI_PLACES=251, PETRI_TRANSITIONS=226} [2024-06-21 18:51:53,701 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 219 predicate places. [2024-06-21 18:51:53,701 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 226 transitions, 2334 flow [2024-06-21 18:51:53,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:53,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:53,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:53,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-21 18:51:53,701 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:53,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:53,702 INFO L85 PathProgramCache]: Analyzing trace with hash 239079672, now seen corresponding path program 12 times [2024-06-21 18:51:53,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:53,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594378348] [2024-06-21 18:51:53,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:53,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:54,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:54,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:54,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594378348] [2024-06-21 18:51:54,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594378348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:54,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:54,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:54,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276584143] [2024-06-21 18:51:54,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:54,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:54,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:54,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:54,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:54,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:51:54,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 226 transitions, 2334 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) [2024-06-21 18:51:54,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:54,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:51:54,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:55,170 INFO L124 PetriNetUnfolderBase]: 461/828 cut-off events. [2024-06-21 18:51:55,170 INFO L125 PetriNetUnfolderBase]: For 136704/136704 co-relation queries the response was YES. [2024-06-21 18:51:55,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7576 conditions, 828 events. 461/828 cut-off events. For 136704/136704 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3894 event pairs, 55 based on Foata normal form. 1/825 useless extension candidates. Maximal degree in co-relation 7459. Up to 739 conditions per place. [2024-06-21 18:51:55,177 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 211 selfloop transitions, 29 changer transitions 0/243 dead transitions. [2024-06-21 18:51:55,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 243 transitions, 2894 flow [2024-06-21 18:51:55,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:51:55,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:51:55,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 18:51:55,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-21 18:51:55,178 INFO L175 Difference]: Start difference. First operand has 251 places, 226 transitions, 2334 flow. Second operand 10 states and 126 transitions. [2024-06-21 18:51:55,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 243 transitions, 2894 flow [2024-06-21 18:51:55,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 243 transitions, 2734 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-21 18:51:55,428 INFO L231 Difference]: Finished difference. Result has 254 places, 228 transitions, 2281 flow [2024-06-21 18:51:55,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2174, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2281, PETRI_PLACES=254, PETRI_TRANSITIONS=228} [2024-06-21 18:51:55,429 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 222 predicate places. [2024-06-21 18:51:55,429 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 228 transitions, 2281 flow [2024-06-21 18:51:55,429 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) [2024-06-21 18:51:55,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:55,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:55,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-21 18:51:55,430 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:55,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:55,430 INFO L85 PathProgramCache]: Analyzing trace with hash 377619726, now seen corresponding path program 11 times [2024-06-21 18:51:55,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:55,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917279807] [2024-06-21 18:51:55,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:55,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:56,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:56,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:56,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917279807] [2024-06-21 18:51:56,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917279807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:56,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:56,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:56,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30010453] [2024-06-21 18:51:56,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:56,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:56,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:56,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:56,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:56,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:51:56,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 228 transitions, 2281 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:56,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:56,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:51:56,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:57,225 INFO L124 PetriNetUnfolderBase]: 443/816 cut-off events. [2024-06-21 18:51:57,225 INFO L125 PetriNetUnfolderBase]: For 140193/140193 co-relation queries the response was YES. [2024-06-21 18:51:57,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7471 conditions, 816 events. 443/816 cut-off events. For 140193/140193 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3935 event pairs, 52 based on Foata normal form. 1/816 useless extension candidates. Maximal degree in co-relation 7352. Up to 629 conditions per place. [2024-06-21 18:51:57,233 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 175 selfloop transitions, 38 changer transitions 0/245 dead transitions. [2024-06-21 18:51:57,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 245 transitions, 2795 flow [2024-06-21 18:51:57,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:51:57,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:51:57,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-21 18:51:57,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-21 18:51:57,234 INFO L175 Difference]: Start difference. First operand has 254 places, 228 transitions, 2281 flow. Second operand 10 states and 139 transitions. [2024-06-21 18:51:57,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 245 transitions, 2795 flow [2024-06-21 18:51:57,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 245 transitions, 2710 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-21 18:51:57,526 INFO L231 Difference]: Finished difference. Result has 256 places, 230 transitions, 2329 flow [2024-06-21 18:51:57,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2196, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2329, PETRI_PLACES=256, PETRI_TRANSITIONS=230} [2024-06-21 18:51:57,526 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 224 predicate places. [2024-06-21 18:51:57,526 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 230 transitions, 2329 flow [2024-06-21 18:51:57,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:57,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:57,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:57,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-21 18:51:57,527 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:57,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:57,527 INFO L85 PathProgramCache]: Analyzing trace with hash 382624056, now seen corresponding path program 12 times [2024-06-21 18:51:57,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:57,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537618699] [2024-06-21 18:51:57,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:57,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:51:58,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:51:58,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:51:58,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537618699] [2024-06-21 18:51:58,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537618699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:51:58,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:51:58,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:51:58,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36417527] [2024-06-21 18:51:58,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:51:58,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:51:58,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:51:58,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:51:58,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:51:58,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:51:58,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 230 transitions, 2329 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:58,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:51:58,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:51:58,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:51:59,398 INFO L124 PetriNetUnfolderBase]: 444/821 cut-off events. [2024-06-21 18:51:59,398 INFO L125 PetriNetUnfolderBase]: For 148375/148376 co-relation queries the response was YES. [2024-06-21 18:51:59,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7675 conditions, 821 events. 444/821 cut-off events. For 148375/148376 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3998 event pairs, 49 based on Foata normal form. 1/819 useless extension candidates. Maximal degree in co-relation 7555. Up to 614 conditions per place. [2024-06-21 18:51:59,406 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 165 selfloop transitions, 49 changer transitions 0/246 dead transitions. [2024-06-21 18:51:59,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 246 transitions, 2845 flow [2024-06-21 18:51:59,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:51:59,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:51:59,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-21 18:51:59,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-21 18:51:59,407 INFO L175 Difference]: Start difference. First operand has 256 places, 230 transitions, 2329 flow. Second operand 10 states and 138 transitions. [2024-06-21 18:51:59,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 246 transitions, 2845 flow [2024-06-21 18:51:59,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 246 transitions, 2728 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 18:51:59,587 INFO L231 Difference]: Finished difference. Result has 258 places, 232 transitions, 2371 flow [2024-06-21 18:51:59,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2212, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2371, PETRI_PLACES=258, PETRI_TRANSITIONS=232} [2024-06-21 18:51:59,588 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 226 predicate places. [2024-06-21 18:51:59,588 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 232 transitions, 2371 flow [2024-06-21 18:51:59,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:51:59,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:51:59,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:51:59,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-21 18:51:59,588 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:51:59,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:51:59,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1315973930, now seen corresponding path program 11 times [2024-06-21 18:51:59,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:51:59,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268830553] [2024-06-21 18:51:59,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:51:59,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:51:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:00,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:00,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:00,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268830553] [2024-06-21 18:52:00,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268830553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:00,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:00,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:52:00,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589547079] [2024-06-21 18:52:00,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:00,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:52:00,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:00,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:52:00,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:52:00,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:52:00,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 232 transitions, 2371 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) [2024-06-21 18:52:00,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:00,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:52:00,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:01,010 INFO L124 PetriNetUnfolderBase]: 470/850 cut-off events. [2024-06-21 18:52:01,010 INFO L125 PetriNetUnfolderBase]: For 146455/146455 co-relation queries the response was YES. [2024-06-21 18:52:01,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7813 conditions, 850 events. 470/850 cut-off events. For 146455/146455 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4043 event pairs, 53 based on Foata normal form. 1/850 useless extension candidates. Maximal degree in co-relation 7692. Up to 772 conditions per place. [2024-06-21 18:52:01,018 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 221 selfloop transitions, 23 changer transitions 0/247 dead transitions. [2024-06-21 18:52:01,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 247 transitions, 2927 flow [2024-06-21 18:52:01,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:52:01,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:52:01,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-21 18:52:01,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-21 18:52:01,019 INFO L175 Difference]: Start difference. First operand has 258 places, 232 transitions, 2371 flow. Second operand 10 states and 123 transitions. [2024-06-21 18:52:01,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 247 transitions, 2927 flow [2024-06-21 18:52:01,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 247 transitions, 2784 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-21 18:52:01,341 INFO L231 Difference]: Finished difference. Result has 260 places, 234 transitions, 2317 flow [2024-06-21 18:52:01,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2228, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2317, PETRI_PLACES=260, PETRI_TRANSITIONS=234} [2024-06-21 18:52:01,342 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 228 predicate places. [2024-06-21 18:52:01,342 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 234 transitions, 2317 flow [2024-06-21 18:52:01,342 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) [2024-06-21 18:52:01,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:52:01,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:52:01,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-21 18:52:01,342 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:52:01,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:52:01,342 INFO L85 PathProgramCache]: Analyzing trace with hash 366543860, now seen corresponding path program 12 times [2024-06-21 18:52:01,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:52:01,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668946150] [2024-06-21 18:52:01,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:52:01,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:52:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:02,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:02,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:02,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668946150] [2024-06-21 18:52:02,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668946150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:02,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:02,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:52:02,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729163294] [2024-06-21 18:52:02,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:02,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:52:02,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:02,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:52:02,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:52:02,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:52:02,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 234 transitions, 2317 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) [2024-06-21 18:52:02,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:02,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:52:02,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:02,763 INFO L124 PetriNetUnfolderBase]: 473/855 cut-off events. [2024-06-21 18:52:02,763 INFO L125 PetriNetUnfolderBase]: For 149487/149487 co-relation queries the response was YES. [2024-06-21 18:52:02,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7801 conditions, 855 events. 473/855 cut-off events. For 149487/149487 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4077 event pairs, 59 based on Foata normal form. 1/855 useless extension candidates. Maximal degree in co-relation 7679. Up to 777 conditions per place. [2024-06-21 18:52:02,770 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 223 selfloop transitions, 24 changer transitions 0/250 dead transitions. [2024-06-21 18:52:02,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 250 transitions, 2885 flow [2024-06-21 18:52:02,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:52:02,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:52:02,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-21 18:52:02,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-21 18:52:02,771 INFO L175 Difference]: Start difference. First operand has 260 places, 234 transitions, 2317 flow. Second operand 10 states and 123 transitions. [2024-06-21 18:52:02,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 250 transitions, 2885 flow [2024-06-21 18:52:03,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 250 transitions, 2820 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-21 18:52:03,097 INFO L231 Difference]: Finished difference. Result has 262 places, 236 transitions, 2347 flow [2024-06-21 18:52:03,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2252, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2347, PETRI_PLACES=262, PETRI_TRANSITIONS=236} [2024-06-21 18:52:03,097 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 230 predicate places. [2024-06-21 18:52:03,098 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 236 transitions, 2347 flow [2024-06-21 18:52:03,098 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) [2024-06-21 18:52:03,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:52:03,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:52:03,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-21 18:52:03,098 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:52:03,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:52:03,098 INFO L85 PathProgramCache]: Analyzing trace with hash 383189682, now seen corresponding path program 13 times [2024-06-21 18:52:03,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:52:03,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447918159] [2024-06-21 18:52:03,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:52:03,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:52:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:04,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:04,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:04,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447918159] [2024-06-21 18:52:04,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447918159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:04,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:04,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:52:04,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913917582] [2024-06-21 18:52:04,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:04,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:52:04,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:04,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:52:04,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:52:04,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:52:04,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 236 transitions, 2347 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) [2024-06-21 18:52:04,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:04,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:52:04,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:04,531 INFO L124 PetriNetUnfolderBase]: 481/864 cut-off events. [2024-06-21 18:52:04,531 INFO L125 PetriNetUnfolderBase]: For 157163/157163 co-relation queries the response was YES. [2024-06-21 18:52:04,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8040 conditions, 864 events. 481/864 cut-off events. For 157163/157163 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4105 event pairs, 51 based on Foata normal form. 1/859 useless extension candidates. Maximal degree in co-relation 7917. Up to 750 conditions per place. [2024-06-21 18:52:04,538 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 212 selfloop transitions, 40 changer transitions 0/255 dead transitions. [2024-06-21 18:52:04,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 255 transitions, 3157 flow [2024-06-21 18:52:04,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:52:04,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:52:04,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-21 18:52:04,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-21 18:52:04,539 INFO L175 Difference]: Start difference. First operand has 262 places, 236 transitions, 2347 flow. Second operand 9 states and 121 transitions. [2024-06-21 18:52:04,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 255 transitions, 3157 flow [2024-06-21 18:52:04,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 255 transitions, 3086 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-21 18:52:04,890 INFO L231 Difference]: Finished difference. Result has 263 places, 240 transitions, 2453 flow [2024-06-21 18:52:04,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2276, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2453, PETRI_PLACES=263, PETRI_TRANSITIONS=240} [2024-06-21 18:52:04,891 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 231 predicate places. [2024-06-21 18:52:04,891 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 240 transitions, 2453 flow [2024-06-21 18:52:04,891 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) [2024-06-21 18:52:04,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:52:04,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:52:04,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-21 18:52:04,891 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:52:04,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:52:04,892 INFO L85 PathProgramCache]: Analyzing trace with hash -104458608, now seen corresponding path program 14 times [2024-06-21 18:52:04,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:52:04,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174763470] [2024-06-21 18:52:04,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:52:04,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:52:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:05,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:05,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:05,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174763470] [2024-06-21 18:52:05,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174763470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:05,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:05,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:52:05,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655976560] [2024-06-21 18:52:05,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:05,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:52:05,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:05,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:52:05,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:52:06,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:52:06,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 240 transitions, 2453 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) [2024-06-21 18:52:06,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:06,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:52:06,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:06,283 INFO L124 PetriNetUnfolderBase]: 479/860 cut-off events. [2024-06-21 18:52:06,284 INFO L125 PetriNetUnfolderBase]: For 156461/156461 co-relation queries the response was YES. [2024-06-21 18:52:06,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7981 conditions, 860 events. 479/860 cut-off events. For 156461/156461 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4076 event pairs, 51 based on Foata normal form. 1/855 useless extension candidates. Maximal degree in co-relation 7858. Up to 748 conditions per place. [2024-06-21 18:52:06,293 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 213 selfloop transitions, 38 changer transitions 0/254 dead transitions. [2024-06-21 18:52:06,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 254 transitions, 2991 flow [2024-06-21 18:52:06,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:52:06,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:52:06,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-21 18:52:06,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-21 18:52:06,306 INFO L175 Difference]: Start difference. First operand has 263 places, 240 transitions, 2453 flow. Second operand 9 states and 121 transitions. [2024-06-21 18:52:06,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 254 transitions, 2991 flow [2024-06-21 18:52:06,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 254 transitions, 2893 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-21 18:52:06,628 INFO L231 Difference]: Finished difference. Result has 267 places, 240 transitions, 2436 flow [2024-06-21 18:52:06,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2355, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2436, PETRI_PLACES=267, PETRI_TRANSITIONS=240} [2024-06-21 18:52:06,628 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 235 predicate places. [2024-06-21 18:52:06,628 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 240 transitions, 2436 flow [2024-06-21 18:52:06,629 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) [2024-06-21 18:52:06,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:52:06,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:52:06,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-21 18:52:06,629 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:52:06,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:52:06,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1320622318, now seen corresponding path program 15 times [2024-06-21 18:52:06,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:52:06,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860319503] [2024-06-21 18:52:06,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:52:06,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:52:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:07,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:07,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:07,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860319503] [2024-06-21 18:52:07,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860319503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:07,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:07,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:52:07,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677976798] [2024-06-21 18:52:07,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:07,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:52:07,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:07,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:52:07,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:52:07,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:52:07,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 240 transitions, 2436 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) [2024-06-21 18:52:07,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:07,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:52:07,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:08,129 INFO L124 PetriNetUnfolderBase]: 482/870 cut-off events. [2024-06-21 18:52:08,129 INFO L125 PetriNetUnfolderBase]: For 159729/159729 co-relation queries the response was YES. [2024-06-21 18:52:08,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8081 conditions, 870 events. 482/870 cut-off events. For 159729/159729 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4156 event pairs, 49 based on Foata normal form. 1/870 useless extension candidates. Maximal degree in co-relation 7956. Up to 774 conditions per place. [2024-06-21 18:52:08,137 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 225 selfloop transitions, 28 changer transitions 0/256 dead transitions. [2024-06-21 18:52:08,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 256 transitions, 3028 flow [2024-06-21 18:52:08,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:52:08,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:52:08,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 18:52:08,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-21 18:52:08,139 INFO L175 Difference]: Start difference. First operand has 267 places, 240 transitions, 2436 flow. Second operand 10 states and 126 transitions. [2024-06-21 18:52:08,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 256 transitions, 3028 flow [2024-06-21 18:52:08,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 256 transitions, 2933 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 18:52:08,482 INFO L231 Difference]: Finished difference. Result has 269 places, 242 transitions, 2454 flow [2024-06-21 18:52:08,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2341, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2454, PETRI_PLACES=269, PETRI_TRANSITIONS=242} [2024-06-21 18:52:08,482 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 237 predicate places. [2024-06-21 18:52:08,482 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 242 transitions, 2454 flow [2024-06-21 18:52:08,482 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) [2024-06-21 18:52:08,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:52:08,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:52:08,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-21 18:52:08,483 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:52:08,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:52:08,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1320622504, now seen corresponding path program 13 times [2024-06-21 18:52:08,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:52:08,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512711679] [2024-06-21 18:52:08,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:52:08,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:52:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:09,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:09,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:09,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512711679] [2024-06-21 18:52:09,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512711679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:09,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:09,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:52:09,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37410291] [2024-06-21 18:52:09,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:09,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:52:09,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:09,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:52:09,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:52:09,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:52:09,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 242 transitions, 2454 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:52:09,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:09,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:52:09,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:10,259 INFO L124 PetriNetUnfolderBase]: 463/855 cut-off events. [2024-06-21 18:52:10,260 INFO L125 PetriNetUnfolderBase]: For 164109/164109 co-relation queries the response was YES. [2024-06-21 18:52:10,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8021 conditions, 855 events. 463/855 cut-off events. For 164109/164109 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4173 event pairs, 50 based on Foata normal form. 1/855 useless extension candidates. Maximal degree in co-relation 7894. Up to 656 conditions per place. [2024-06-21 18:52:10,268 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 186 selfloop transitions, 37 changer transitions 0/258 dead transitions. [2024-06-21 18:52:10,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 258 transitions, 2994 flow [2024-06-21 18:52:10,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:52:10,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:52:10,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-21 18:52:10,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-21 18:52:10,269 INFO L175 Difference]: Start difference. First operand has 269 places, 242 transitions, 2454 flow. Second operand 10 states and 139 transitions. [2024-06-21 18:52:10,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 258 transitions, 2994 flow [2024-06-21 18:52:10,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 258 transitions, 2903 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-21 18:52:10,604 INFO L231 Difference]: Finished difference. Result has 271 places, 244 transitions, 2502 flow [2024-06-21 18:52:10,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2363, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2502, PETRI_PLACES=271, PETRI_TRANSITIONS=244} [2024-06-21 18:52:10,605 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 239 predicate places. [2024-06-21 18:52:10,605 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 244 transitions, 2502 flow [2024-06-21 18:52:10,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:52:10,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:52:10,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:52:10,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-21 18:52:10,605 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:52:10,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:52:10,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1315980874, now seen corresponding path program 14 times [2024-06-21 18:52:10,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:52:10,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978829448] [2024-06-21 18:52:10,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:52:10,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:52:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:11,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:11,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:11,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978829448] [2024-06-21 18:52:11,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978829448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:11,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:11,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:52:11,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708576258] [2024-06-21 18:52:11,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:11,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:52:11,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:11,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:52:11,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:52:12,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:52:12,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 244 transitions, 2502 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:52:12,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:12,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:52:12,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:12,614 INFO L124 PetriNetUnfolderBase]: 466/862 cut-off events. [2024-06-21 18:52:12,614 INFO L125 PetriNetUnfolderBase]: For 167991/167991 co-relation queries the response was YES. [2024-06-21 18:52:12,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8141 conditions, 862 events. 466/862 cut-off events. For 167991/167991 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4222 event pairs, 50 based on Foata normal form. 1/862 useless extension candidates. Maximal degree in co-relation 8013. Up to 652 conditions per place. [2024-06-21 18:52:12,623 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 183 selfloop transitions, 41 changer transitions 0/259 dead transitions. [2024-06-21 18:52:12,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 259 transitions, 3044 flow [2024-06-21 18:52:12,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:52:12,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:52:12,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-21 18:52:12,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-21 18:52:12,624 INFO L175 Difference]: Start difference. First operand has 271 places, 244 transitions, 2502 flow. Second operand 10 states and 140 transitions. [2024-06-21 18:52:12,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 259 transitions, 3044 flow [2024-06-21 18:52:13,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 259 transitions, 2921 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-21 18:52:13,031 INFO L231 Difference]: Finished difference. Result has 273 places, 246 transitions, 2530 flow [2024-06-21 18:52:13,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2379, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2530, PETRI_PLACES=273, PETRI_TRANSITIONS=246} [2024-06-21 18:52:13,032 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 241 predicate places. [2024-06-21 18:52:13,032 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 246 transitions, 2530 flow [2024-06-21 18:52:13,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:52:13,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:52:13,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:52:13,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-21 18:52:13,032 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:52:13,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:52:13,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1315980688, now seen corresponding path program 16 times [2024-06-21 18:52:13,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:52:13,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665259773] [2024-06-21 18:52:13,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:52:13,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:52:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:14,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:14,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:14,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665259773] [2024-06-21 18:52:14,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665259773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:14,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:14,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:52:14,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50137327] [2024-06-21 18:52:14,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:14,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:52:14,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:14,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:52:14,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:52:14,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:52:14,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 246 transitions, 2530 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) [2024-06-21 18:52:14,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:14,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:52:14,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:14,567 INFO L124 PetriNetUnfolderBase]: 496/897 cut-off events. [2024-06-21 18:52:14,567 INFO L125 PetriNetUnfolderBase]: For 175775/175775 co-relation queries the response was YES. [2024-06-21 18:52:14,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8542 conditions, 897 events. 496/897 cut-off events. For 175775/175775 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4343 event pairs, 49 based on Foata normal form. 1/897 useless extension candidates. Maximal degree in co-relation 8413. Up to 781 conditions per place. [2024-06-21 18:52:14,576 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 226 selfloop transitions, 35 changer transitions 0/264 dead transitions. [2024-06-21 18:52:14,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 264 transitions, 3382 flow [2024-06-21 18:52:14,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:52:14,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:52:14,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 18:52:14,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-21 18:52:14,578 INFO L175 Difference]: Start difference. First operand has 273 places, 246 transitions, 2530 flow. Second operand 10 states and 130 transitions. [2024-06-21 18:52:14,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 264 transitions, 3382 flow [2024-06-21 18:52:14,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 264 transitions, 3247 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-21 18:52:14,991 INFO L231 Difference]: Finished difference. Result has 275 places, 250 transitions, 2578 flow [2024-06-21 18:52:14,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2395, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2578, PETRI_PLACES=275, PETRI_TRANSITIONS=250} [2024-06-21 18:52:14,991 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 243 predicate places. [2024-06-21 18:52:14,991 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 250 transitions, 2578 flow [2024-06-21 18:52:14,991 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) [2024-06-21 18:52:14,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:52:14,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:52:14,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-21 18:52:14,992 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:52:14,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:52:14,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1315974178, now seen corresponding path program 17 times [2024-06-21 18:52:14,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:52:14,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769801419] [2024-06-21 18:52:14,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:52:14,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:52:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:16,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:16,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:16,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769801419] [2024-06-21 18:52:16,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769801419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:16,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:16,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:52:16,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793321870] [2024-06-21 18:52:16,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:16,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:52:16,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:16,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:52:16,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:52:16,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:52:16,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 250 transitions, 2578 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) [2024-06-21 18:52:16,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:16,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:52:16,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:16,542 INFO L124 PetriNetUnfolderBase]: 494/894 cut-off events. [2024-06-21 18:52:16,542 INFO L125 PetriNetUnfolderBase]: For 174374/174374 co-relation queries the response was YES. [2024-06-21 18:52:16,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8400 conditions, 894 events. 494/894 cut-off events. For 174374/174374 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4329 event pairs, 49 based on Foata normal form. 1/894 useless extension candidates. Maximal degree in co-relation 8270. Up to 779 conditions per place. [2024-06-21 18:52:16,550 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 224 selfloop transitions, 36 changer transitions 0/263 dead transitions. [2024-06-21 18:52:16,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 263 transitions, 3132 flow [2024-06-21 18:52:16,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:52:16,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:52:16,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-21 18:52:16,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-21 18:52:16,551 INFO L175 Difference]: Start difference. First operand has 275 places, 250 transitions, 2578 flow. Second operand 10 states and 128 transitions. [2024-06-21 18:52:16,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 263 transitions, 3132 flow [2024-06-21 18:52:16,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 263 transitions, 3010 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-21 18:52:16,979 INFO L231 Difference]: Finished difference. Result has 279 places, 250 transitions, 2533 flow [2024-06-21 18:52:16,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2456, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2533, PETRI_PLACES=279, PETRI_TRANSITIONS=250} [2024-06-21 18:52:16,980 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 247 predicate places. [2024-06-21 18:52:16,980 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 250 transitions, 2533 flow [2024-06-21 18:52:16,980 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) [2024-06-21 18:52:16,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:52:16,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:52:16,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-21 18:52:16,981 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:52:16,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:52:16,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1143490798, now seen corresponding path program 18 times [2024-06-21 18:52:16,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:52:16,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039293185] [2024-06-21 18:52:16,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:52:16,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:52:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:18,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:18,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:18,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039293185] [2024-06-21 18:52:18,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039293185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:18,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:18,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:52:18,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516623496] [2024-06-21 18:52:18,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:18,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:52:18,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:18,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:52:18,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:52:18,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:52:18,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 250 transitions, 2533 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) [2024-06-21 18:52:18,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:18,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:52:18,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:18,480 INFO L124 PetriNetUnfolderBase]: 497/899 cut-off events. [2024-06-21 18:52:18,480 INFO L125 PetriNetUnfolderBase]: For 177798/177798 co-relation queries the response was YES. [2024-06-21 18:52:18,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8475 conditions, 899 events. 497/899 cut-off events. For 177798/177798 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4366 event pairs, 53 based on Foata normal form. 1/899 useless extension candidates. Maximal degree in co-relation 8343. Up to 730 conditions per place. [2024-06-21 18:52:18,488 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 205 selfloop transitions, 57 changer transitions 0/265 dead transitions. [2024-06-21 18:52:18,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 265 transitions, 3339 flow [2024-06-21 18:52:18,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:52:18,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:52:18,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 18:52:18,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-21 18:52:18,489 INFO L175 Difference]: Start difference. First operand has 279 places, 250 transitions, 2533 flow. Second operand 10 states and 130 transitions. [2024-06-21 18:52:18,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 265 transitions, 3339 flow [2024-06-21 18:52:18,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 265 transitions, 3264 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 18:52:18,985 INFO L231 Difference]: Finished difference. Result has 280 places, 252 transitions, 2633 flow [2024-06-21 18:52:18,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2458, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2633, PETRI_PLACES=280, PETRI_TRANSITIONS=252} [2024-06-21 18:52:18,986 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 248 predicate places. [2024-06-21 18:52:18,986 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 252 transitions, 2633 flow [2024-06-21 18:52:18,986 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) [2024-06-21 18:52:18,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:52:18,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:52:18,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-21 18:52:18,986 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:52:18,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:52:18,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1143490984, now seen corresponding path program 15 times [2024-06-21 18:52:18,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:52:18,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460474568] [2024-06-21 18:52:18,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:52:18,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:52:19,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:20,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:20,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:20,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460474568] [2024-06-21 18:52:20,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460474568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:20,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:20,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:52:20,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894615144] [2024-06-21 18:52:20,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:20,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:52:20,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:20,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:52:20,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:52:20,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:52:20,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 252 transitions, 2633 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:52:20,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:20,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:52:20,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:20,909 INFO L124 PetriNetUnfolderBase]: 472/873 cut-off events. [2024-06-21 18:52:20,909 INFO L125 PetriNetUnfolderBase]: For 177371/177371 co-relation queries the response was YES. [2024-06-21 18:52:20,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8278 conditions, 873 events. 472/873 cut-off events. For 177371/177371 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4314 event pairs, 55 based on Foata normal form. 1/873 useless extension candidates. Maximal degree in co-relation 8145. Up to 615 conditions per place. [2024-06-21 18:52:20,919 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 166 selfloop transitions, 62 changer transitions 0/266 dead transitions. [2024-06-21 18:52:20,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 266 transitions, 3183 flow [2024-06-21 18:52:20,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:52:20,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:52:20,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-21 18:52:20,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-21 18:52:20,920 INFO L175 Difference]: Start difference. First operand has 280 places, 252 transitions, 2633 flow. Second operand 10 states and 138 transitions. [2024-06-21 18:52:20,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 266 transitions, 3183 flow [2024-06-21 18:52:21,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 266 transitions, 2876 flow, removed 31 selfloop flow, removed 11 redundant places. [2024-06-21 18:52:21,344 INFO L231 Difference]: Finished difference. Result has 279 places, 254 transitions, 2523 flow [2024-06-21 18:52:21,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2326, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2523, PETRI_PLACES=279, PETRI_TRANSITIONS=254} [2024-06-21 18:52:21,345 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 247 predicate places. [2024-06-21 18:52:21,345 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 254 transitions, 2523 flow [2024-06-21 18:52:21,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:52:21,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:52:21,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:52:21,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-21 18:52:21,345 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:52:21,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:52:21,345 INFO L85 PathProgramCache]: Analyzing trace with hash 572481082, now seen corresponding path program 13 times [2024-06-21 18:52:21,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:52:21,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373122560] [2024-06-21 18:52:21,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:52:21,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:52:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:22,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:22,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:22,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373122560] [2024-06-21 18:52:22,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373122560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:22,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:22,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:52:22,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444981236] [2024-06-21 18:52:22,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:22,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:52:22,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:22,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:52:22,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:52:22,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:52:22,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 254 transitions, 2523 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) [2024-06-21 18:52:22,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:22,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:52:22,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:22,817 INFO L124 PetriNetUnfolderBase]: 498/901 cut-off events. [2024-06-21 18:52:22,817 INFO L125 PetriNetUnfolderBase]: For 180075/180075 co-relation queries the response was YES. [2024-06-21 18:52:22,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8290 conditions, 901 events. 498/901 cut-off events. For 180075/180075 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4406 event pairs, 55 based on Foata normal form. 1/901 useless extension candidates. Maximal degree in co-relation 8159. Up to 783 conditions per place. [2024-06-21 18:52:22,826 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 229 selfloop transitions, 37 changer transitions 0/269 dead transitions. [2024-06-21 18:52:22,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 269 transitions, 3327 flow [2024-06-21 18:52:22,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:52:22,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:52:22,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-21 18:52:22,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-21 18:52:22,827 INFO L175 Difference]: Start difference. First operand has 279 places, 254 transitions, 2523 flow. Second operand 10 states and 128 transitions. [2024-06-21 18:52:22,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 269 transitions, 3327 flow [2024-06-21 18:52:23,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 269 transitions, 3146 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-21 18:52:23,224 INFO L231 Difference]: Finished difference. Result has 281 places, 256 transitions, 2463 flow [2024-06-21 18:52:23,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2342, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2463, PETRI_PLACES=281, PETRI_TRANSITIONS=256} [2024-06-21 18:52:23,225 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 249 predicate places. [2024-06-21 18:52:23,225 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 256 transitions, 2463 flow [2024-06-21 18:52:23,225 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) [2024-06-21 18:52:23,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:52:23,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:52:23,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-21 18:52:23,226 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:52:23,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:52:23,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1143245030, now seen corresponding path program 14 times [2024-06-21 18:52:23,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:52:23,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658623753] [2024-06-21 18:52:23,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:52:23,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:52:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:24,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:24,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:24,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658623753] [2024-06-21 18:52:24,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658623753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:24,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:24,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:52:24,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818219429] [2024-06-21 18:52:24,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:24,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:52:24,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:24,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:52:24,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:52:24,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:52:24,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 256 transitions, 2463 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) [2024-06-21 18:52:24,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:24,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:52:24,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:24,734 INFO L124 PetriNetUnfolderBase]: 501/906 cut-off events. [2024-06-21 18:52:24,734 INFO L125 PetriNetUnfolderBase]: For 183267/183267 co-relation queries the response was YES. [2024-06-21 18:52:24,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8273 conditions, 906 events. 501/906 cut-off events. For 183267/183267 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4421 event pairs, 55 based on Foata normal form. 1/906 useless extension candidates. Maximal degree in co-relation 8141. Up to 787 conditions per place. [2024-06-21 18:52:24,743 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 224 selfloop transitions, 44 changer transitions 0/271 dead transitions. [2024-06-21 18:52:24,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 271 transitions, 3277 flow [2024-06-21 18:52:24,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:52:24,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:52:24,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 18:52:24,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-21 18:52:24,744 INFO L175 Difference]: Start difference. First operand has 281 places, 256 transitions, 2463 flow. Second operand 10 states and 126 transitions. [2024-06-21 18:52:24,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 271 transitions, 3277 flow [2024-06-21 18:52:25,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 271 transitions, 3105 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-21 18:52:25,166 INFO L231 Difference]: Finished difference. Result has 282 places, 258 transitions, 2430 flow [2024-06-21 18:52:25,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2301, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2430, PETRI_PLACES=282, PETRI_TRANSITIONS=258} [2024-06-21 18:52:25,167 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 250 predicate places. [2024-06-21 18:52:25,167 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 258 transitions, 2430 flow [2024-06-21 18:52:25,167 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) [2024-06-21 18:52:25,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:52:25,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:52:25,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-21 18:52:25,168 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:52:25,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:52:25,168 INFO L85 PathProgramCache]: Analyzing trace with hash 572480834, now seen corresponding path program 19 times [2024-06-21 18:52:25,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:52:25,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87473851] [2024-06-21 18:52:25,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:52:25,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:52:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:26,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:26,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:26,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87473851] [2024-06-21 18:52:26,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87473851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:26,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:26,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:52:26,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860233358] [2024-06-21 18:52:26,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:26,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:52:26,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:26,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:52:26,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:52:26,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:52:26,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 258 transitions, 2430 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) [2024-06-21 18:52:26,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:26,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:52:26,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:26,667 INFO L124 PetriNetUnfolderBase]: 504/911 cut-off events. [2024-06-21 18:52:26,667 INFO L125 PetriNetUnfolderBase]: For 186595/186595 co-relation queries the response was YES. [2024-06-21 18:52:26,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8271 conditions, 911 events. 504/911 cut-off events. For 186595/186595 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4461 event pairs, 53 based on Foata normal form. 1/911 useless extension candidates. Maximal degree in co-relation 8139. Up to 741 conditions per place. [2024-06-21 18:52:26,676 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 212 selfloop transitions, 58 changer transitions 0/273 dead transitions. [2024-06-21 18:52:26,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 273 transitions, 3244 flow [2024-06-21 18:52:26,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:52:26,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:52:26,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-21 18:52:26,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-21 18:52:26,679 INFO L175 Difference]: Start difference. First operand has 282 places, 258 transitions, 2430 flow. Second operand 10 states and 131 transitions. [2024-06-21 18:52:26,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 273 transitions, 3244 flow [2024-06-21 18:52:27,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 273 transitions, 3052 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-21 18:52:27,067 INFO L231 Difference]: Finished difference. Result has 283 places, 260 transitions, 2399 flow [2024-06-21 18:52:27,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2238, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2399, PETRI_PLACES=283, PETRI_TRANSITIONS=260} [2024-06-21 18:52:27,067 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 251 predicate places. [2024-06-21 18:52:27,068 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 260 transitions, 2399 flow [2024-06-21 18:52:27,068 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) [2024-06-21 18:52:27,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:52:27,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:52:27,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-21 18:52:27,068 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:52:27,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:52:27,068 INFO L85 PathProgramCache]: Analyzing trace with hash 572711474, now seen corresponding path program 20 times [2024-06-21 18:52:27,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:52:27,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487161950] [2024-06-21 18:52:27,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:52:27,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:52:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:28,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:28,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:28,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487161950] [2024-06-21 18:52:28,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487161950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:28,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:28,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:52:28,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762047864] [2024-06-21 18:52:28,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:28,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:52:28,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:28,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:52:28,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:52:28,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:52:28,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 260 transitions, 2399 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) [2024-06-21 18:52:28,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:28,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:52:28,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:28,584 INFO L124 PetriNetUnfolderBase]: 502/908 cut-off events. [2024-06-21 18:52:28,584 INFO L125 PetriNetUnfolderBase]: For 185029/185029 co-relation queries the response was YES. [2024-06-21 18:52:28,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8151 conditions, 908 events. 502/908 cut-off events. For 185029/185029 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4450 event pairs, 53 based on Foata normal form. 1/908 useless extension candidates. Maximal degree in co-relation 8018. Up to 739 conditions per place. [2024-06-21 18:52:28,592 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 204 selfloop transitions, 65 changer transitions 0/272 dead transitions. [2024-06-21 18:52:28,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 272 transitions, 2967 flow [2024-06-21 18:52:28,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:52:28,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:52:28,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-21 18:52:28,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-21 18:52:28,593 INFO L175 Difference]: Start difference. First operand has 283 places, 260 transitions, 2399 flow. Second operand 10 states and 128 transitions. [2024-06-21 18:52:28,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 272 transitions, 2967 flow [2024-06-21 18:52:28,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 272 transitions, 2802 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-21 18:52:28,959 INFO L231 Difference]: Finished difference. Result has 286 places, 260 transitions, 2369 flow [2024-06-21 18:52:28,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2234, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2369, PETRI_PLACES=286, PETRI_TRANSITIONS=260} [2024-06-21 18:52:28,960 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 254 predicate places. [2024-06-21 18:52:28,960 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 260 transitions, 2369 flow [2024-06-21 18:52:28,960 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) [2024-06-21 18:52:28,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:52:28,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:52:28,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-21 18:52:28,960 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:52:28,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:52:28,960 INFO L85 PathProgramCache]: Analyzing trace with hash 572711722, now seen corresponding path program 15 times [2024-06-21 18:52:28,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:52:28,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685319979] [2024-06-21 18:52:28,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:52:28,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:52:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:30,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:30,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:30,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685319979] [2024-06-21 18:52:30,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685319979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:30,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:30,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:52:30,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097956660] [2024-06-21 18:52:30,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:30,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:52:30,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:30,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:52:30,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:52:30,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:52:30,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 260 transitions, 2369 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) [2024-06-21 18:52:30,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:30,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:52:30,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:30,461 INFO L124 PetriNetUnfolderBase]: 500/905 cut-off events. [2024-06-21 18:52:30,461 INFO L125 PetriNetUnfolderBase]: For 183072/183072 co-relation queries the response was YES. [2024-06-21 18:52:30,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8028 conditions, 905 events. 500/905 cut-off events. For 183072/183072 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4433 event pairs, 55 based on Foata normal form. 1/905 useless extension candidates. Maximal degree in co-relation 7894. Up to 787 conditions per place. [2024-06-21 18:52:30,470 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 228 selfloop transitions, 41 changer transitions 0/272 dead transitions. [2024-06-21 18:52:30,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 272 transitions, 2937 flow [2024-06-21 18:52:30,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:52:30,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:52:30,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 18:52:30,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-21 18:52:30,471 INFO L175 Difference]: Start difference. First operand has 286 places, 260 transitions, 2369 flow. Second operand 10 states and 126 transitions. [2024-06-21 18:52:30,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 272 transitions, 2937 flow [2024-06-21 18:52:30,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 272 transitions, 2697 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-21 18:52:30,892 INFO L231 Difference]: Finished difference. Result has 285 places, 260 transitions, 2216 flow [2024-06-21 18:52:30,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2129, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2216, PETRI_PLACES=285, PETRI_TRANSITIONS=260} [2024-06-21 18:52:30,893 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 253 predicate places. [2024-06-21 18:52:30,893 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 260 transitions, 2216 flow [2024-06-21 18:52:30,893 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) [2024-06-21 18:52:30,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:52:30,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:52:30,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-21 18:52:30,894 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:52:30,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:52:30,894 INFO L85 PathProgramCache]: Analyzing trace with hash -554028046, now seen corresponding path program 1 times [2024-06-21 18:52:30,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:52:30,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460122137] [2024-06-21 18:52:30,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:52:30,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:52:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:32,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:32,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:32,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460122137] [2024-06-21 18:52:32,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460122137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:32,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:32,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:52:32,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051497842] [2024-06-21 18:52:32,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:32,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:52:32,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:32,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:52:32,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:52:33,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:52:33,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 260 transitions, 2216 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:52:33,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:33,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:52:33,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:33,344 INFO L124 PetriNetUnfolderBase]: 467/863 cut-off events. [2024-06-21 18:52:33,344 INFO L125 PetriNetUnfolderBase]: For 184550/184551 co-relation queries the response was YES. [2024-06-21 18:52:33,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7480 conditions, 863 events. 467/863 cut-off events. For 184550/184551 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4307 event pairs, 87 based on Foata normal form. 3/857 useless extension candidates. Maximal degree in co-relation 7345. Up to 725 conditions per place. [2024-06-21 18:52:33,352 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 214 selfloop transitions, 17 changer transitions 0/270 dead transitions. [2024-06-21 18:52:33,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 270 transitions, 2700 flow [2024-06-21 18:52:33,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:52:33,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:52:33,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 18:52:33,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36639118457300274 [2024-06-21 18:52:33,353 INFO L175 Difference]: Start difference. First operand has 285 places, 260 transitions, 2216 flow. Second operand 11 states and 133 transitions. [2024-06-21 18:52:33,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 270 transitions, 2700 flow [2024-06-21 18:52:33,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 270 transitions, 2596 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-21 18:52:33,740 INFO L231 Difference]: Finished difference. Result has 286 places, 260 transitions, 2150 flow [2024-06-21 18:52:33,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2112, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2150, PETRI_PLACES=286, PETRI_TRANSITIONS=260} [2024-06-21 18:52:33,741 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 254 predicate places. [2024-06-21 18:52:33,741 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 260 transitions, 2150 flow [2024-06-21 18:52:33,741 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) [2024-06-21 18:52:33,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:52:33,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:52:33,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-21 18:52:33,741 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:52:33,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:52:33,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1227933754, now seen corresponding path program 1 times [2024-06-21 18:52:33,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:52:33,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672889695] [2024-06-21 18:52:33,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:52:33,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:52:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:34,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:34,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:34,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672889695] [2024-06-21 18:52:34,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672889695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:34,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:34,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:52:34,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198535977] [2024-06-21 18:52:34,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:34,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:52:34,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:34,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:52:34,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:52:35,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:52:35,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 260 transitions, 2150 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) [2024-06-21 18:52:35,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:35,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:52:35,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:35,495 INFO L124 PetriNetUnfolderBase]: 500/907 cut-off events. [2024-06-21 18:52:35,496 INFO L125 PetriNetUnfolderBase]: For 179070/179070 co-relation queries the response was YES. [2024-06-21 18:52:35,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7742 conditions, 907 events. 500/907 cut-off events. For 179070/179070 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4458 event pairs, 60 based on Foata normal form. 1/907 useless extension candidates. Maximal degree in co-relation 7606. Up to 779 conditions per place. [2024-06-21 18:52:35,505 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 236 selfloop transitions, 36 changer transitions 0/275 dead transitions. [2024-06-21 18:52:35,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 275 transitions, 2772 flow [2024-06-21 18:52:35,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:52:35,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:52:35,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 18:52:35,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3746556473829201 [2024-06-21 18:52:35,506 INFO L175 Difference]: Start difference. First operand has 286 places, 260 transitions, 2150 flow. Second operand 11 states and 136 transitions. [2024-06-21 18:52:35,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 275 transitions, 2772 flow [2024-06-21 18:52:35,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 275 transitions, 2716 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-21 18:52:35,878 INFO L231 Difference]: Finished difference. Result has 286 places, 262 transitions, 2217 flow [2024-06-21 18:52:35,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2217, PETRI_PLACES=286, PETRI_TRANSITIONS=262} [2024-06-21 18:52:35,878 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 254 predicate places. [2024-06-21 18:52:35,878 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 262 transitions, 2217 flow [2024-06-21 18:52:35,878 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) [2024-06-21 18:52:35,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:52:35,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:52:35,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-21 18:52:35,879 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:52:35,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:52:35,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1231658621, now seen corresponding path program 1 times [2024-06-21 18:52:35,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:52:35,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536160557] [2024-06-21 18:52:35,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:52:35,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:52:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:37,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:37,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:37,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536160557] [2024-06-21 18:52:37,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536160557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:37,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:37,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:52:37,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744586575] [2024-06-21 18:52:37,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:37,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:52:37,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:37,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:52:37,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:52:37,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:52:37,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 262 transitions, 2217 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) [2024-06-21 18:52:37,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:37,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:52:37,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:37,499 INFO L124 PetriNetUnfolderBase]: 503/912 cut-off events. [2024-06-21 18:52:37,499 INFO L125 PetriNetUnfolderBase]: For 182454/182454 co-relation queries the response was YES. [2024-06-21 18:52:37,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7854 conditions, 912 events. 503/912 cut-off events. For 182454/182454 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4498 event pairs, 53 based on Foata normal form. 1/912 useless extension candidates. Maximal degree in co-relation 7719. Up to 807 conditions per place. [2024-06-21 18:52:37,508 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 243 selfloop transitions, 30 changer transitions 0/276 dead transitions. [2024-06-21 18:52:37,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 276 transitions, 2823 flow [2024-06-21 18:52:37,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:52:37,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:52:37,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 18:52:37,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-21 18:52:37,509 INFO L175 Difference]: Start difference. First operand has 286 places, 262 transitions, 2217 flow. Second operand 10 states and 126 transitions. [2024-06-21 18:52:37,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 276 transitions, 2823 flow [2024-06-21 18:52:37,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 276 transitions, 2716 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-21 18:52:37,870 INFO L231 Difference]: Finished difference. Result has 287 places, 264 transitions, 2207 flow [2024-06-21 18:52:37,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2110, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2207, PETRI_PLACES=287, PETRI_TRANSITIONS=264} [2024-06-21 18:52:37,871 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 255 predicate places. [2024-06-21 18:52:37,871 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 264 transitions, 2207 flow [2024-06-21 18:52:37,871 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) [2024-06-21 18:52:37,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:52:37,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:52:37,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-21 18:52:37,871 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:52:37,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:52:37,872 INFO L85 PathProgramCache]: Analyzing trace with hash 163015622, now seen corresponding path program 2 times [2024-06-21 18:52:37,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:52:37,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340243294] [2024-06-21 18:52:37,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:52:37,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:52:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:39,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:39,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:39,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340243294] [2024-06-21 18:52:39,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340243294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:39,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:39,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:52:39,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908192836] [2024-06-21 18:52:39,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:39,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:52:39,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:39,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:52:39,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:52:39,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:52:39,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 264 transitions, 2207 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) [2024-06-21 18:52:39,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:39,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:52:39,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:40,093 INFO L124 PetriNetUnfolderBase]: 511/927 cut-off events. [2024-06-21 18:52:40,093 INFO L125 PetriNetUnfolderBase]: For 191812/191812 co-relation queries the response was YES. [2024-06-21 18:52:40,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8109 conditions, 927 events. 511/927 cut-off events. For 191812/191812 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4576 event pairs, 64 based on Foata normal form. 1/927 useless extension candidates. Maximal degree in co-relation 7973. Up to 781 conditions per place. [2024-06-21 18:52:40,101 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 234 selfloop transitions, 44 changer transitions 0/281 dead transitions. [2024-06-21 18:52:40,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 281 transitions, 3103 flow [2024-06-21 18:52:40,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:52:40,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:52:40,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-21 18:52:40,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-21 18:52:40,108 INFO L175 Difference]: Start difference. First operand has 287 places, 264 transitions, 2207 flow. Second operand 11 states and 139 transitions. [2024-06-21 18:52:40,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 281 transitions, 3103 flow [2024-06-21 18:52:40,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 281 transitions, 3022 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-21 18:52:40,543 INFO L231 Difference]: Finished difference. Result has 290 places, 268 transitions, 2315 flow [2024-06-21 18:52:40,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2126, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2315, PETRI_PLACES=290, PETRI_TRANSITIONS=268} [2024-06-21 18:52:40,543 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 258 predicate places. [2024-06-21 18:52:40,543 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 268 transitions, 2315 flow [2024-06-21 18:52:40,543 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) [2024-06-21 18:52:40,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:52:40,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:52:40,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-21 18:52:40,544 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:52:40,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:52:40,544 INFO L85 PathProgramCache]: Analyzing trace with hash 163010042, now seen corresponding path program 3 times [2024-06-21 18:52:40,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:52:40,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944741328] [2024-06-21 18:52:40,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:52:40,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:52:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:41,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:41,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:41,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944741328] [2024-06-21 18:52:41,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944741328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:41,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:41,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:52:41,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181236586] [2024-06-21 18:52:41,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:41,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:52:41,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:41,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:52:41,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:52:42,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:52:42,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 268 transitions, 2315 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) [2024-06-21 18:52:42,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:42,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:52:42,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:42,680 INFO L124 PetriNetUnfolderBase]: 509/924 cut-off events. [2024-06-21 18:52:42,680 INFO L125 PetriNetUnfolderBase]: For 190223/190223 co-relation queries the response was YES. [2024-06-21 18:52:42,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8045 conditions, 924 events. 509/924 cut-off events. For 190223/190223 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4565 event pairs, 64 based on Foata normal form. 1/924 useless extension candidates. Maximal degree in co-relation 7908. Up to 779 conditions per place. [2024-06-21 18:52:42,687 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 234 selfloop transitions, 43 changer transitions 0/280 dead transitions. [2024-06-21 18:52:42,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 280 transitions, 2901 flow [2024-06-21 18:52:42,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:52:42,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:52:42,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-21 18:52:42,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-21 18:52:42,688 INFO L175 Difference]: Start difference. First operand has 290 places, 268 transitions, 2315 flow. Second operand 11 states and 139 transitions. [2024-06-21 18:52:42,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 280 transitions, 2901 flow [2024-06-21 18:52:43,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 280 transitions, 2778 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-21 18:52:43,181 INFO L231 Difference]: Finished difference. Result has 294 places, 268 transitions, 2283 flow [2024-06-21 18:52:43,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2192, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2283, PETRI_PLACES=294, PETRI_TRANSITIONS=268} [2024-06-21 18:52:43,181 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 262 predicate places. [2024-06-21 18:52:43,181 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 268 transitions, 2283 flow [2024-06-21 18:52:43,181 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) [2024-06-21 18:52:43,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:52:43,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:52:43,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-21 18:52:43,182 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:52:43,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:52:43,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1165395782, now seen corresponding path program 1 times [2024-06-21 18:52:43,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:52:43,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669530774] [2024-06-21 18:52:43,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:52:43,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:52:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:44,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:44,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:44,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669530774] [2024-06-21 18:52:44,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669530774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:44,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:44,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:52:44,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887108744] [2024-06-21 18:52:44,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:44,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:52:44,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:44,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:52:44,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:52:44,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:52:44,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 268 transitions, 2283 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:52:44,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:44,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:52:44,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:44,878 INFO L124 PetriNetUnfolderBase]: 512/929 cut-off events. [2024-06-21 18:52:44,878 INFO L125 PetriNetUnfolderBase]: For 193369/193369 co-relation queries the response was YES. [2024-06-21 18:52:44,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8108 conditions, 929 events. 512/929 cut-off events. For 193369/193369 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4589 event pairs, 61 based on Foata normal form. 1/929 useless extension candidates. Maximal degree in co-relation 7969. Up to 818 conditions per place. [2024-06-21 18:52:44,888 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 244 selfloop transitions, 36 changer transitions 0/283 dead transitions. [2024-06-21 18:52:44,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 283 transitions, 2903 flow [2024-06-21 18:52:44,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:52:44,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:52:44,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-21 18:52:44,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175084175084175 [2024-06-21 18:52:44,889 INFO L175 Difference]: Start difference. First operand has 294 places, 268 transitions, 2283 flow. Second operand 9 states and 124 transitions. [2024-06-21 18:52:44,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 283 transitions, 2903 flow [2024-06-21 18:52:45,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 283 transitions, 2803 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-21 18:52:45,436 INFO L231 Difference]: Finished difference. Result has 293 places, 270 transitions, 2294 flow [2024-06-21 18:52:45,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2183, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2294, PETRI_PLACES=293, PETRI_TRANSITIONS=270} [2024-06-21 18:52:45,437 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 261 predicate places. [2024-06-21 18:52:45,437 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 270 transitions, 2294 flow [2024-06-21 18:52:45,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:52:45,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:52:45,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:52:45,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-21 18:52:45,437 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:52:45,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:52:45,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1165395503, now seen corresponding path program 2 times [2024-06-21 18:52:45,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:52:45,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334870413] [2024-06-21 18:52:45,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:52:45,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:52:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:46,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:46,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:46,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334870413] [2024-06-21 18:52:46,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334870413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:46,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:46,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:52:46,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231982769] [2024-06-21 18:52:46,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:46,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:52:46,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:46,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:52:46,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:52:46,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:52:46,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 270 transitions, 2294 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) [2024-06-21 18:52:46,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:46,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:52:46,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:47,211 INFO L124 PetriNetUnfolderBase]: 520/942 cut-off events. [2024-06-21 18:52:47,212 INFO L125 PetriNetUnfolderBase]: For 202676/202676 co-relation queries the response was YES. [2024-06-21 18:52:47,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8356 conditions, 942 events. 520/942 cut-off events. For 202676/202676 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4658 event pairs, 57 based on Foata normal form. 1/942 useless extension candidates. Maximal degree in co-relation 8217. Up to 808 conditions per place. [2024-06-21 18:52:47,220 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 240 selfloop transitions, 43 changer transitions 0/286 dead transitions. [2024-06-21 18:52:47,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 286 transitions, 3174 flow [2024-06-21 18:52:47,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:52:47,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:52:47,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 18:52:47,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-21 18:52:47,221 INFO L175 Difference]: Start difference. First operand has 293 places, 270 transitions, 2294 flow. Second operand 10 states and 130 transitions. [2024-06-21 18:52:47,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 286 transitions, 3174 flow [2024-06-21 18:52:47,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 286 transitions, 3083 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-21 18:52:47,763 INFO L231 Difference]: Finished difference. Result has 296 places, 274 transitions, 2362 flow [2024-06-21 18:52:47,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2203, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2362, PETRI_PLACES=296, PETRI_TRANSITIONS=274} [2024-06-21 18:52:47,763 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 264 predicate places. [2024-06-21 18:52:47,763 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 274 transitions, 2362 flow [2024-06-21 18:52:47,763 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) [2024-06-21 18:52:47,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:52:47,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:52:47,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-21 18:52:47,763 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:52:47,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:52:47,764 INFO L85 PathProgramCache]: Analyzing trace with hash 307107962, now seen corresponding path program 4 times [2024-06-21 18:52:47,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:52:47,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281931948] [2024-06-21 18:52:47,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:52:47,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:52:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:49,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:49,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:49,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281931948] [2024-06-21 18:52:49,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281931948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:49,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:49,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:52:49,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330570997] [2024-06-21 18:52:49,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:49,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:52:49,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:49,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:52:49,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:52:49,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:52:49,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 274 transitions, 2362 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) [2024-06-21 18:52:49,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:49,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:52:49,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:49,868 INFO L124 PetriNetUnfolderBase]: 523/947 cut-off events. [2024-06-21 18:52:49,868 INFO L125 PetriNetUnfolderBase]: For 210125/210125 co-relation queries the response was YES. [2024-06-21 18:52:49,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8470 conditions, 947 events. 523/947 cut-off events. For 210125/210125 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4690 event pairs, 63 based on Foata normal form. 1/947 useless extension candidates. Maximal degree in co-relation 8329. Up to 793 conditions per place. [2024-06-21 18:52:49,878 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 235 selfloop transitions, 49 changer transitions 0/287 dead transitions. [2024-06-21 18:52:49,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 287 transitions, 3008 flow [2024-06-21 18:52:49,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:52:49,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:52:49,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-21 18:52:49,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-21 18:52:49,879 INFO L175 Difference]: Start difference. First operand has 296 places, 274 transitions, 2362 flow. Second operand 10 states and 133 transitions. [2024-06-21 18:52:49,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 287 transitions, 3008 flow [2024-06-21 18:52:50,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 287 transitions, 2927 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-21 18:52:50,482 INFO L231 Difference]: Finished difference. Result has 300 places, 276 transitions, 2438 flow [2024-06-21 18:52:50,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2281, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2438, PETRI_PLACES=300, PETRI_TRANSITIONS=276} [2024-06-21 18:52:50,482 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 268 predicate places. [2024-06-21 18:52:50,482 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 276 transitions, 2438 flow [2024-06-21 18:52:50,482 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) [2024-06-21 18:52:50,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:52:50,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:52:50,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-21 18:52:50,483 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:52:50,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:52:50,483 INFO L85 PathProgramCache]: Analyzing trace with hash 307108179, now seen corresponding path program 3 times [2024-06-21 18:52:50,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:52:50,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138735955] [2024-06-21 18:52:50,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:52:50,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:52:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:51,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:51,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:51,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138735955] [2024-06-21 18:52:51,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138735955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:51,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:51,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:52:51,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75684269] [2024-06-21 18:52:51,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:51,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:52:51,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:51,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:52:51,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:52:51,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:52:51,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 276 transitions, 2438 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) [2024-06-21 18:52:51,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:51,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:52:51,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:52,189 INFO L124 PetriNetUnfolderBase]: 526/952 cut-off events. [2024-06-21 18:52:52,189 INFO L125 PetriNetUnfolderBase]: For 214091/214091 co-relation queries the response was YES. [2024-06-21 18:52:52,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8611 conditions, 952 events. 526/952 cut-off events. For 214091/214091 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 4727 event pairs, 57 based on Foata normal form. 1/952 useless extension candidates. Maximal degree in co-relation 8468. Up to 817 conditions per place. [2024-06-21 18:52:52,198 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 244 selfloop transitions, 43 changer transitions 0/290 dead transitions. [2024-06-21 18:52:52,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 290 transitions, 3296 flow [2024-06-21 18:52:52,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:52:52,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:52:52,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-21 18:52:52,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-21 18:52:52,199 INFO L175 Difference]: Start difference. First operand has 300 places, 276 transitions, 2438 flow. Second operand 10 states and 131 transitions. [2024-06-21 18:52:52,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 290 transitions, 3296 flow [2024-06-21 18:52:52,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 290 transitions, 3155 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-21 18:52:52,851 INFO L231 Difference]: Finished difference. Result has 302 places, 278 transitions, 2418 flow [2024-06-21 18:52:52,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2297, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2418, PETRI_PLACES=302, PETRI_TRANSITIONS=278} [2024-06-21 18:52:52,852 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 270 predicate places. [2024-06-21 18:52:52,852 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 278 transitions, 2418 flow [2024-06-21 18:52:52,852 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) [2024-06-21 18:52:52,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:52:52,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:52:52,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-21 18:52:52,852 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:52:52,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:52:52,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1375543354, now seen corresponding path program 5 times [2024-06-21 18:52:52,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:52:52,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651916919] [2024-06-21 18:52:52,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:52:52,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:52:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:54,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:54,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:54,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651916919] [2024-06-21 18:52:54,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651916919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:54,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:54,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:52:54,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857920239] [2024-06-21 18:52:54,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:54,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:52:54,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:54,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:52:54,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:52:54,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:52:54,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 278 transitions, 2418 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) [2024-06-21 18:52:54,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:54,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:52:54,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:54,881 INFO L124 PetriNetUnfolderBase]: 534/969 cut-off events. [2024-06-21 18:52:54,881 INFO L125 PetriNetUnfolderBase]: For 221044/221044 co-relation queries the response was YES. [2024-06-21 18:52:54,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8863 conditions, 969 events. 534/969 cut-off events. For 221044/221044 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 4838 event pairs, 63 based on Foata normal form. 1/969 useless extension candidates. Maximal degree in co-relation 8719. Up to 801 conditions per place. [2024-06-21 18:52:54,890 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 239 selfloop transitions, 52 changer transitions 0/294 dead transitions. [2024-06-21 18:52:54,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 294 transitions, 3364 flow [2024-06-21 18:52:54,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:52:54,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:52:54,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 18:52:54,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-21 18:52:54,892 INFO L175 Difference]: Start difference. First operand has 302 places, 278 transitions, 2418 flow. Second operand 11 states and 142 transitions. [2024-06-21 18:52:54,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 294 transitions, 3364 flow [2024-06-21 18:52:55,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 294 transitions, 3271 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-21 18:52:55,515 INFO L231 Difference]: Finished difference. Result has 306 places, 282 transitions, 2546 flow [2024-06-21 18:52:55,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2325, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2546, PETRI_PLACES=306, PETRI_TRANSITIONS=282} [2024-06-21 18:52:55,516 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 274 predicate places. [2024-06-21 18:52:55,516 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 282 transitions, 2546 flow [2024-06-21 18:52:55,516 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) [2024-06-21 18:52:55,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:52:55,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:52:55,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-21 18:52:55,516 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:52:55,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:52:55,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1375549151, now seen corresponding path program 4 times [2024-06-21 18:52:55,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:52:55,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009907555] [2024-06-21 18:52:55,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:52:55,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:52:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:56,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:56,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:56,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009907555] [2024-06-21 18:52:56,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009907555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:56,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:56,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:52:56,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540362903] [2024-06-21 18:52:56,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:56,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:52:56,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:56,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:52:56,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:52:56,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:52:56,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 282 transitions, 2546 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) [2024-06-21 18:52:56,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:56,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:52:56,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:57,219 INFO L124 PetriNetUnfolderBase]: 532/966 cut-off events. [2024-06-21 18:52:57,219 INFO L125 PetriNetUnfolderBase]: For 219011/219011 co-relation queries the response was YES. [2024-06-21 18:52:57,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8800 conditions, 966 events. 532/966 cut-off events. For 219011/219011 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 4878 event pairs, 52 based on Foata normal form. 1/966 useless extension candidates. Maximal degree in co-relation 8655. Up to 828 conditions per place. [2024-06-21 18:52:57,230 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 248 selfloop transitions, 42 changer transitions 0/293 dead transitions. [2024-06-21 18:52:57,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 293 transitions, 3154 flow [2024-06-21 18:52:57,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:52:57,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:52:57,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-21 18:52:57,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-21 18:52:57,230 INFO L175 Difference]: Start difference. First operand has 306 places, 282 transitions, 2546 flow. Second operand 10 states and 131 transitions. [2024-06-21 18:52:57,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 293 transitions, 3154 flow [2024-06-21 18:52:57,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 293 transitions, 3021 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-21 18:52:57,898 INFO L231 Difference]: Finished difference. Result has 309 places, 282 transitions, 2502 flow [2024-06-21 18:52:57,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2413, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2502, PETRI_PLACES=309, PETRI_TRANSITIONS=282} [2024-06-21 18:52:57,898 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 277 predicate places. [2024-06-21 18:52:57,899 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 282 transitions, 2502 flow [2024-06-21 18:52:57,899 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) [2024-06-21 18:52:57,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:52:57,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:52:57,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-21 18:52:57,899 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:52:57,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:52:57,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1375548934, now seen corresponding path program 6 times [2024-06-21 18:52:57,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:52:57,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802460161] [2024-06-21 18:52:57,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:52:57,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:52:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:52:59,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:52:59,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:52:59,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802460161] [2024-06-21 18:52:59,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802460161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:52:59,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:52:59,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:52:59,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468426720] [2024-06-21 18:52:59,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:52:59,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:52:59,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:52:59,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:52:59,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:52:59,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:52:59,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 282 transitions, 2502 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) [2024-06-21 18:52:59,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:52:59,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:52:59,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:52:59,805 INFO L124 PetriNetUnfolderBase]: 530/963 cut-off events. [2024-06-21 18:52:59,805 INFO L125 PetriNetUnfolderBase]: For 215498/215498 co-relation queries the response was YES. [2024-06-21 18:52:59,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8676 conditions, 963 events. 530/963 cut-off events. For 215498/215498 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 4809 event pairs, 63 based on Foata normal form. 1/963 useless extension candidates. Maximal degree in co-relation 8529. Up to 787 conditions per place. [2024-06-21 18:52:59,814 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 236 selfloop transitions, 54 changer transitions 0/293 dead transitions. [2024-06-21 18:52:59,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 293 transitions, 3110 flow [2024-06-21 18:52:59,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:52:59,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:52:59,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 18:52:59,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-21 18:52:59,814 INFO L175 Difference]: Start difference. First operand has 309 places, 282 transitions, 2502 flow. Second operand 11 states and 142 transitions. [2024-06-21 18:52:59,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 293 transitions, 3110 flow [2024-06-21 18:53:00,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 293 transitions, 2965 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-21 18:53:00,482 INFO L231 Difference]: Finished difference. Result has 310 places, 282 transitions, 2470 flow [2024-06-21 18:53:00,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2357, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2470, PETRI_PLACES=310, PETRI_TRANSITIONS=282} [2024-06-21 18:53:00,483 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 278 predicate places. [2024-06-21 18:53:00,483 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 282 transitions, 2470 flow [2024-06-21 18:53:00,483 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) [2024-06-21 18:53:00,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:53:00,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:53:00,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-21 18:53:00,483 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:53:00,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:53:00,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1366484753, now seen corresponding path program 5 times [2024-06-21 18:53:00,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:53:00,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270886107] [2024-06-21 18:53:00,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:53:00,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:53:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:53:01,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:53:01,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:53:01,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270886107] [2024-06-21 18:53:01,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270886107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:53:01,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:53:01,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:53:01,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030370097] [2024-06-21 18:53:01,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:53:01,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:53:01,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:53:01,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:53:01,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:53:01,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:53:01,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 282 transitions, 2470 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) [2024-06-21 18:53:01,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:53:01,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:53:01,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:53:02,253 INFO L124 PetriNetUnfolderBase]: 548/992 cut-off events. [2024-06-21 18:53:02,253 INFO L125 PetriNetUnfolderBase]: For 239788/239788 co-relation queries the response was YES. [2024-06-21 18:53:02,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9267 conditions, 992 events. 548/992 cut-off events. For 239788/239788 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 4995 event pairs, 52 based on Foata normal form. 1/992 useless extension candidates. Maximal degree in co-relation 9119. Up to 796 conditions per place. [2024-06-21 18:53:02,261 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 237 selfloop transitions, 63 changer transitions 0/303 dead transitions. [2024-06-21 18:53:02,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 303 transitions, 3940 flow [2024-06-21 18:53:02,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:53:02,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:53:02,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-21 18:53:02,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-21 18:53:02,263 INFO L175 Difference]: Start difference. First operand has 310 places, 282 transitions, 2470 flow. Second operand 10 states and 137 transitions. [2024-06-21 18:53:02,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 303 transitions, 3940 flow [2024-06-21 18:53:02,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 303 transitions, 3820 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 18:53:02,894 INFO L231 Difference]: Finished difference. Result has 310 places, 290 transitions, 2629 flow [2024-06-21 18:53:02,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2350, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2629, PETRI_PLACES=310, PETRI_TRANSITIONS=290} [2024-06-21 18:53:02,894 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 278 predicate places. [2024-06-21 18:53:02,894 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 290 transitions, 2629 flow [2024-06-21 18:53:02,894 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) [2024-06-21 18:53:02,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:53:02,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:53:02,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-21 18:53:02,894 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:53:02,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:53:02,895 INFO L85 PathProgramCache]: Analyzing trace with hash 154930106, now seen corresponding path program 2 times [2024-06-21 18:53:02,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:53:02,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601639579] [2024-06-21 18:53:02,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:53:02,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:53:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:53:04,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:53:04,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:53:04,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601639579] [2024-06-21 18:53:04,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601639579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:53:04,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:53:04,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:53:04,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518478918] [2024-06-21 18:53:04,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:53:04,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:53:04,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:53:04,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:53:04,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:53:04,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:53:04,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 290 transitions, 2629 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:53:04,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:53:04,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:53:04,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:53:04,620 INFO L124 PetriNetUnfolderBase]: 561/1013 cut-off events. [2024-06-21 18:53:04,620 INFO L125 PetriNetUnfolderBase]: For 257730/257730 co-relation queries the response was YES. [2024-06-21 18:53:04,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9735 conditions, 1013 events. 561/1013 cut-off events. For 257730/257730 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5156 event pairs, 56 based on Foata normal form. 1/1013 useless extension candidates. Maximal degree in co-relation 9586. Up to 820 conditions per place. [2024-06-21 18:53:04,630 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 247 selfloop transitions, 59 changer transitions 0/309 dead transitions. [2024-06-21 18:53:04,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 309 transitions, 3835 flow [2024-06-21 18:53:04,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:53:04,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:53:04,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-06-21 18:53:04,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377104377104377 [2024-06-21 18:53:04,631 INFO L175 Difference]: Start difference. First operand has 310 places, 290 transitions, 2629 flow. Second operand 9 states and 130 transitions. [2024-06-21 18:53:04,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 309 transitions, 3835 flow [2024-06-21 18:53:05,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 309 transitions, 3739 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-21 18:53:05,331 INFO L231 Difference]: Finished difference. Result has 315 places, 296 transitions, 2757 flow [2024-06-21 18:53:05,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2533, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2757, PETRI_PLACES=315, PETRI_TRANSITIONS=296} [2024-06-21 18:53:05,332 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 283 predicate places. [2024-06-21 18:53:05,332 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 296 transitions, 2757 flow [2024-06-21 18:53:05,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:53:05,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:53:05,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:53:05,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-21 18:53:05,332 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:53:05,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:53:05,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1867199068, now seen corresponding path program 7 times [2024-06-21 18:53:05,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:53:05,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928525810] [2024-06-21 18:53:05,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:53:05,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:53:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:53:06,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:53:06,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:53:06,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928525810] [2024-06-21 18:53:06,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928525810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:53:06,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:53:06,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:53:06,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861133028] [2024-06-21 18:53:06,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:53:06,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:53:06,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:53:06,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:53:06,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:53:06,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:53:06,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 296 transitions, 2757 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) [2024-06-21 18:53:06,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:53:06,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:53:06,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:53:07,301 INFO L124 PetriNetUnfolderBase]: 574/1038 cut-off events. [2024-06-21 18:53:07,301 INFO L125 PetriNetUnfolderBase]: For 276789/276789 co-relation queries the response was YES. [2024-06-21 18:53:07,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10324 conditions, 1038 events. 574/1038 cut-off events. For 276789/276789 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5288 event pairs, 63 based on Foata normal form. 1/1038 useless extension candidates. Maximal degree in co-relation 10174. Up to 815 conditions per place. [2024-06-21 18:53:07,311 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 242 selfloop transitions, 69 changer transitions 0/314 dead transitions. [2024-06-21 18:53:07,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 314 transitions, 4053 flow [2024-06-21 18:53:07,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:53:07,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:53:07,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 18:53:07,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022038567493113 [2024-06-21 18:53:07,312 INFO L175 Difference]: Start difference. First operand has 315 places, 296 transitions, 2757 flow. Second operand 11 states and 146 transitions. [2024-06-21 18:53:07,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 314 transitions, 4053 flow [2024-06-21 18:53:08,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 314 transitions, 3981 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-21 18:53:08,065 INFO L231 Difference]: Finished difference. Result has 322 places, 302 transitions, 3006 flow [2024-06-21 18:53:08,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2685, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3006, PETRI_PLACES=322, PETRI_TRANSITIONS=302} [2024-06-21 18:53:08,065 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 290 predicate places. [2024-06-21 18:53:08,065 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 302 transitions, 3006 flow [2024-06-21 18:53:08,065 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) [2024-06-21 18:53:08,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:53:08,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:53:08,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-21 18:53:08,066 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:53:08,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:53:08,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1859847201, now seen corresponding path program 6 times [2024-06-21 18:53:08,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:53:08,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207171710] [2024-06-21 18:53:08,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:53:08,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:53:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:53:09,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:53:09,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:53:09,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207171710] [2024-06-21 18:53:09,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207171710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:53:09,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:53:09,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:53:09,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048589160] [2024-06-21 18:53:09,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:53:09,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:53:09,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:53:09,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:53:09,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:53:09,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:53:09,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 302 transitions, 3006 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) [2024-06-21 18:53:09,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:53:09,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:53:09,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:53:09,854 INFO L124 PetriNetUnfolderBase]: 572/1035 cut-off events. [2024-06-21 18:53:09,854 INFO L125 PetriNetUnfolderBase]: For 274867/274867 co-relation queries the response was YES. [2024-06-21 18:53:09,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10342 conditions, 1035 events. 572/1035 cut-off events. For 274867/274867 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5282 event pairs, 57 based on Foata normal form. 1/1035 useless extension candidates. Maximal degree in co-relation 10189. Up to 836 conditions per place. [2024-06-21 18:53:09,864 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 247 selfloop transitions, 64 changer transitions 0/314 dead transitions. [2024-06-21 18:53:09,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 314 transitions, 4132 flow [2024-06-21 18:53:09,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:53:09,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:53:09,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-21 18:53:09,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 18:53:09,865 INFO L175 Difference]: Start difference. First operand has 322 places, 302 transitions, 3006 flow. Second operand 10 states and 135 transitions. [2024-06-21 18:53:09,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 314 transitions, 4132 flow [2024-06-21 18:53:10,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 314 transitions, 3891 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-21 18:53:10,618 INFO L231 Difference]: Finished difference. Result has 324 places, 302 transitions, 2898 flow [2024-06-21 18:53:10,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2765, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2898, PETRI_PLACES=324, PETRI_TRANSITIONS=302} [2024-06-21 18:53:10,618 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 292 predicate places. [2024-06-21 18:53:10,618 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 302 transitions, 2898 flow [2024-06-21 18:53:10,618 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) [2024-06-21 18:53:10,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:53:10,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:53:10,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-21 18:53:10,618 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:53:10,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:53:10,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1366744223, now seen corresponding path program 7 times [2024-06-21 18:53:10,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:53:10,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546649638] [2024-06-21 18:53:10,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:53:10,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:53:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:53:11,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:53:11,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:53:11,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546649638] [2024-06-21 18:53:11,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546649638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:53:11,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:53:11,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:53:11,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055787518] [2024-06-21 18:53:11,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:53:11,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:53:11,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:53:11,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:53:11,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:53:12,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:53:12,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 302 transitions, 2898 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) [2024-06-21 18:53:12,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:53:12,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:53:12,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:53:12,414 INFO L124 PetriNetUnfolderBase]: 570/1032 cut-off events. [2024-06-21 18:53:12,414 INFO L125 PetriNetUnfolderBase]: For 270949/270949 co-relation queries the response was YES. [2024-06-21 18:53:12,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10050 conditions, 1032 events. 570/1032 cut-off events. For 270949/270949 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5260 event pairs, 57 based on Foata normal form. 1/1032 useless extension candidates. Maximal degree in co-relation 9897. Up to 834 conditions per place. [2024-06-21 18:53:12,427 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 240 selfloop transitions, 70 changer transitions 0/313 dead transitions. [2024-06-21 18:53:12,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 313 transitions, 3784 flow [2024-06-21 18:53:12,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:53:12,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:53:12,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-21 18:53:12,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-21 18:53:12,428 INFO L175 Difference]: Start difference. First operand has 324 places, 302 transitions, 2898 flow. Second operand 10 states and 133 transitions. [2024-06-21 18:53:12,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 313 transitions, 3784 flow [2024-06-21 18:53:13,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 313 transitions, 3638 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-21 18:53:13,180 INFO L231 Difference]: Finished difference. Result has 326 places, 302 transitions, 2897 flow [2024-06-21 18:53:13,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2752, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2897, PETRI_PLACES=326, PETRI_TRANSITIONS=302} [2024-06-21 18:53:13,180 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 294 predicate places. [2024-06-21 18:53:13,180 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 302 transitions, 2897 flow [2024-06-21 18:53:13,181 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) [2024-06-21 18:53:13,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:53:13,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:53:13,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-21 18:53:13,181 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:53:13,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:53:13,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1359119866, now seen corresponding path program 8 times [2024-06-21 18:53:13,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:53:13,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117062872] [2024-06-21 18:53:13,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:53:13,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:53:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:53:14,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:53:14,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:53:14,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117062872] [2024-06-21 18:53:14,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117062872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:53:14,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:53:14,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:53:14,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451224610] [2024-06-21 18:53:14,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:53:14,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:53:14,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:53:14,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:53:14,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:53:14,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:53:14,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 302 transitions, 2897 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) [2024-06-21 18:53:14,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:53:14,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:53:14,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:53:15,397 INFO L124 PetriNetUnfolderBase]: 568/1029 cut-off events. [2024-06-21 18:53:15,397 INFO L125 PetriNetUnfolderBase]: For 268023/268023 co-relation queries the response was YES. [2024-06-21 18:53:15,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9935 conditions, 1029 events. 568/1029 cut-off events. For 268023/268023 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5251 event pairs, 63 based on Foata normal form. 1/1029 useless extension candidates. Maximal degree in co-relation 9781. Up to 807 conditions per place. [2024-06-21 18:53:15,406 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 239 selfloop transitions, 71 changer transitions 0/313 dead transitions. [2024-06-21 18:53:15,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 313 transitions, 3785 flow [2024-06-21 18:53:15,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:53:15,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:53:15,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 18:53:15,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-21 18:53:15,407 INFO L175 Difference]: Start difference. First operand has 326 places, 302 transitions, 2897 flow. Second operand 11 states and 144 transitions. [2024-06-21 18:53:15,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 313 transitions, 3785 flow [2024-06-21 18:53:16,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 313 transitions, 3618 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-21 18:53:16,136 INFO L231 Difference]: Finished difference. Result has 328 places, 302 transitions, 2877 flow [2024-06-21 18:53:16,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2730, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2877, PETRI_PLACES=328, PETRI_TRANSITIONS=302} [2024-06-21 18:53:16,137 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 296 predicate places. [2024-06-21 18:53:16,137 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 302 transitions, 2877 flow [2024-06-21 18:53:16,137 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) [2024-06-21 18:53:16,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:53:16,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:53:16,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-21 18:53:16,137 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:53:16,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:53:16,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1359125663, now seen corresponding path program 8 times [2024-06-21 18:53:16,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:53:16,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258850141] [2024-06-21 18:53:16,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:53:16,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:53:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:53:17,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:53:17,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:53:17,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258850141] [2024-06-21 18:53:17,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258850141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:53:17,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:53:17,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:53:17,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886272004] [2024-06-21 18:53:17,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:53:17,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:53:17,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:53:17,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:53:17,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:53:17,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:53:17,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 302 transitions, 2877 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) [2024-06-21 18:53:17,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:53:17,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:53:17,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:53:17,989 INFO L124 PetriNetUnfolderBase]: 571/1034 cut-off events. [2024-06-21 18:53:17,989 INFO L125 PetriNetUnfolderBase]: For 272699/272699 co-relation queries the response was YES. [2024-06-21 18:53:17,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9989 conditions, 1034 events. 571/1034 cut-off events. For 272699/272699 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5302 event pairs, 52 based on Foata normal form. 1/1034 useless extension candidates. Maximal degree in co-relation 9834. Up to 835 conditions per place. [2024-06-21 18:53:18,000 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 247 selfloop transitions, 65 changer transitions 0/315 dead transitions. [2024-06-21 18:53:18,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 315 transitions, 3809 flow [2024-06-21 18:53:18,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:53:18,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:53:18,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-21 18:53:18,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 18:53:18,001 INFO L175 Difference]: Start difference. First operand has 328 places, 302 transitions, 2877 flow. Second operand 10 states and 135 transitions. [2024-06-21 18:53:18,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 315 transitions, 3809 flow [2024-06-21 18:53:18,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 315 transitions, 3668 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-21 18:53:18,760 INFO L231 Difference]: Finished difference. Result has 329 places, 304 transitions, 2909 flow [2024-06-21 18:53:18,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2736, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2909, PETRI_PLACES=329, PETRI_TRANSITIONS=304} [2024-06-21 18:53:18,760 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 297 predicate places. [2024-06-21 18:53:18,760 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 304 transitions, 2909 flow [2024-06-21 18:53:18,761 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) [2024-06-21 18:53:18,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:53:18,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:53:18,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-21 18:53:18,761 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:53:18,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:53:18,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1359327473, now seen corresponding path program 9 times [2024-06-21 18:53:18,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:53:18,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246852224] [2024-06-21 18:53:18,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:53:18,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:53:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:53:20,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:53:20,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:53:20,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246852224] [2024-06-21 18:53:20,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246852224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:53:20,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:53:20,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:53:20,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342847723] [2024-06-21 18:53:20,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:53:20,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:53:20,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:53:20,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:53:20,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:53:20,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:53:20,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 304 transitions, 2909 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) [2024-06-21 18:53:20,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:53:20,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:53:20,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:53:20,568 INFO L124 PetriNetUnfolderBase]: 574/1039 cut-off events. [2024-06-21 18:53:20,568 INFO L125 PetriNetUnfolderBase]: For 277084/277084 co-relation queries the response was YES. [2024-06-21 18:53:20,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10062 conditions, 1039 events. 574/1039 cut-off events. For 277084/277084 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5329 event pairs, 57 based on Foata normal form. 1/1039 useless extension candidates. Maximal degree in co-relation 9906. Up to 839 conditions per place. [2024-06-21 18:53:20,579 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 250 selfloop transitions, 64 changer transitions 0/317 dead transitions. [2024-06-21 18:53:20,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 317 transitions, 3851 flow [2024-06-21 18:53:20,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:53:20,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:53:20,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-21 18:53:20,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-21 18:53:20,580 INFO L175 Difference]: Start difference. First operand has 329 places, 304 transitions, 2909 flow. Second operand 10 states and 137 transitions. [2024-06-21 18:53:20,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 317 transitions, 3851 flow [2024-06-21 18:53:21,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 317 transitions, 3668 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 18:53:21,410 INFO L231 Difference]: Finished difference. Result has 331 places, 306 transitions, 2901 flow [2024-06-21 18:53:21,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2736, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2901, PETRI_PLACES=331, PETRI_TRANSITIONS=306} [2024-06-21 18:53:21,411 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 299 predicate places. [2024-06-21 18:53:21,411 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 306 transitions, 2901 flow [2024-06-21 18:53:21,411 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) [2024-06-21 18:53:21,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:53:21,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:53:21,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-21 18:53:21,411 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:53:21,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:53:21,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1359334913, now seen corresponding path program 10 times [2024-06-21 18:53:21,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:53:21,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860438753] [2024-06-21 18:53:21,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:53:21,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:53:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:53:22,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:53:22,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:53:22,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860438753] [2024-06-21 18:53:22,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860438753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:53:22,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:53:22,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:53:22,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447492992] [2024-06-21 18:53:22,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:53:22,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:53:22,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:53:22,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:53:22,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:53:22,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:53:22,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 306 transitions, 2901 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) [2024-06-21 18:53:22,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:53:22,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:53:22,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:53:23,187 INFO L124 PetriNetUnfolderBase]: 572/1036 cut-off events. [2024-06-21 18:53:23,187 INFO L125 PetriNetUnfolderBase]: For 273684/273684 co-relation queries the response was YES. [2024-06-21 18:53:23,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9860 conditions, 1036 events. 572/1036 cut-off events. For 273684/273684 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5309 event pairs, 57 based on Foata normal form. 1/1036 useless extension candidates. Maximal degree in co-relation 9704. Up to 837 conditions per place. [2024-06-21 18:53:23,196 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 248 selfloop transitions, 65 changer transitions 0/316 dead transitions. [2024-06-21 18:53:23,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 316 transitions, 3551 flow [2024-06-21 18:53:23,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:53:23,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:53:23,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-21 18:53:23,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 18:53:23,197 INFO L175 Difference]: Start difference. First operand has 331 places, 306 transitions, 2901 flow. Second operand 10 states and 135 transitions. [2024-06-21 18:53:23,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 316 transitions, 3551 flow [2024-06-21 18:53:23,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 316 transitions, 3342 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-21 18:53:23,931 INFO L231 Difference]: Finished difference. Result has 332 places, 306 transitions, 2827 flow [2024-06-21 18:53:23,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2692, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2827, PETRI_PLACES=332, PETRI_TRANSITIONS=306} [2024-06-21 18:53:23,931 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 300 predicate places. [2024-06-21 18:53:23,931 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 306 transitions, 2827 flow [2024-06-21 18:53:23,931 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) [2024-06-21 18:53:23,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:53:23,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:53:23,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-21 18:53:23,932 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:53:23,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:53:23,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1366477096, now seen corresponding path program 9 times [2024-06-21 18:53:23,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:53:23,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462551898] [2024-06-21 18:53:23,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:53:23,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:53:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:53:25,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:53:25,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:53:25,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462551898] [2024-06-21 18:53:25,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462551898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:53:25,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:53:25,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:53:25,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098659387] [2024-06-21 18:53:25,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:53:25,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:53:25,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:53:25,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:53:25,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:53:25,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:53:25,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 306 transitions, 2827 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) [2024-06-21 18:53:25,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:53:25,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:53:25,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:53:26,145 INFO L124 PetriNetUnfolderBase]: 575/1043 cut-off events. [2024-06-21 18:53:26,145 INFO L125 PetriNetUnfolderBase]: For 278150/278150 co-relation queries the response was YES. [2024-06-21 18:53:26,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9898 conditions, 1043 events. 575/1043 cut-off events. For 278150/278150 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5368 event pairs, 63 based on Foata normal form. 1/1043 useless extension candidates. Maximal degree in co-relation 9741. Up to 818 conditions per place. [2024-06-21 18:53:26,158 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 240 selfloop transitions, 76 changer transitions 0/319 dead transitions. [2024-06-21 18:53:26,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 319 transitions, 3783 flow [2024-06-21 18:53:26,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:53:26,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:53:26,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 18:53:26,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-21 18:53:26,159 INFO L175 Difference]: Start difference. First operand has 332 places, 306 transitions, 2827 flow. Second operand 11 states and 143 transitions. [2024-06-21 18:53:26,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 319 transitions, 3783 flow [2024-06-21 18:53:26,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 319 transitions, 3617 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-21 18:53:26,976 INFO L231 Difference]: Finished difference. Result has 333 places, 308 transitions, 2866 flow [2024-06-21 18:53:26,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2661, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2866, PETRI_PLACES=333, PETRI_TRANSITIONS=308} [2024-06-21 18:53:26,977 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 301 predicate places. [2024-06-21 18:53:26,977 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 308 transitions, 2866 flow [2024-06-21 18:53:26,977 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) [2024-06-21 18:53:26,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:53:26,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:53:26,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-21 18:53:26,977 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:53:26,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:53:26,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1366744502, now seen corresponding path program 3 times [2024-06-21 18:53:26,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:53:26,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841971915] [2024-06-21 18:53:26,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:53:26,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:53:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:53:28,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:53:28,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:53:28,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841971915] [2024-06-21 18:53:28,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841971915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:53:28,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:53:28,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:53:28,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880322199] [2024-06-21 18:53:28,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:53:28,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:53:28,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:53:28,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:53:28,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:53:28,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:53:28,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 308 transitions, 2866 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:53:28,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:53:28,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:53:28,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:53:28,734 INFO L124 PetriNetUnfolderBase]: 578/1048 cut-off events. [2024-06-21 18:53:28,734 INFO L125 PetriNetUnfolderBase]: For 286804/286804 co-relation queries the response was YES. [2024-06-21 18:53:28,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9978 conditions, 1048 events. 578/1048 cut-off events. For 286804/286804 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5397 event pairs, 47 based on Foata normal form. 1/1048 useless extension candidates. Maximal degree in co-relation 9820. Up to 848 conditions per place. [2024-06-21 18:53:28,774 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 254 selfloop transitions, 66 changer transitions 0/323 dead transitions. [2024-06-21 18:53:28,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 323 transitions, 4072 flow [2024-06-21 18:53:28,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:53:28,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:53:28,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-06-21 18:53:28,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-21 18:53:28,776 INFO L175 Difference]: Start difference. First operand has 333 places, 308 transitions, 2866 flow. Second operand 9 states and 129 transitions. [2024-06-21 18:53:28,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 323 transitions, 4072 flow [2024-06-21 18:53:29,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 323 transitions, 3922 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-21 18:53:29,805 INFO L231 Difference]: Finished difference. Result has 334 places, 310 transitions, 2886 flow [2024-06-21 18:53:29,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2716, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2886, PETRI_PLACES=334, PETRI_TRANSITIONS=310} [2024-06-21 18:53:29,805 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 302 predicate places. [2024-06-21 18:53:29,805 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 310 transitions, 2886 flow [2024-06-21 18:53:29,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:53:29,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:53:29,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:53:29,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-21 18:53:29,806 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:53:29,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:53:29,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1866989322, now seen corresponding path program 4 times [2024-06-21 18:53:29,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:53:29,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556165564] [2024-06-21 18:53:29,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:53:29,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:53:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:53:31,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:53:31,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:53:31,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556165564] [2024-06-21 18:53:31,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556165564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:53:31,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:53:31,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:53:31,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176098000] [2024-06-21 18:53:31,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:53:31,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:53:31,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:53:31,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:53:31,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:53:31,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:53:31,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 310 transitions, 2886 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:53:31,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:53:31,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:53:31,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:53:31,459 INFO L124 PetriNetUnfolderBase]: 576/1045 cut-off events. [2024-06-21 18:53:31,459 INFO L125 PetriNetUnfolderBase]: For 282866/282866 co-relation queries the response was YES. [2024-06-21 18:53:31,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9838 conditions, 1045 events. 576/1045 cut-off events. For 282866/282866 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5371 event pairs, 47 based on Foata normal form. 1/1045 useless extension candidates. Maximal degree in co-relation 9680. Up to 846 conditions per place. [2024-06-21 18:53:31,471 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 261 selfloop transitions, 58 changer transitions 0/322 dead transitions. [2024-06-21 18:53:31,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 322 transitions, 3806 flow [2024-06-21 18:53:31,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:53:31,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:53:31,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-06-21 18:53:31,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377104377104377 [2024-06-21 18:53:31,473 INFO L175 Difference]: Start difference. First operand has 334 places, 310 transitions, 2886 flow. Second operand 9 states and 130 transitions. [2024-06-21 18:53:31,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 322 transitions, 3806 flow [2024-06-21 18:53:32,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 322 transitions, 3658 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-21 18:53:32,542 INFO L231 Difference]: Finished difference. Result has 337 places, 310 transitions, 2860 flow [2024-06-21 18:53:32,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2738, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2860, PETRI_PLACES=337, PETRI_TRANSITIONS=310} [2024-06-21 18:53:32,543 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 305 predicate places. [2024-06-21 18:53:32,543 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 310 transitions, 2860 flow [2024-06-21 18:53:32,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:53:32,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:53:32,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:53:32,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-21 18:53:32,544 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:53:32,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:53:32,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1866997258, now seen corresponding path program 10 times [2024-06-21 18:53:32,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:53:32,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974080863] [2024-06-21 18:53:32,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:53:32,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:53:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:53:33,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:53:33,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:53:33,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974080863] [2024-06-21 18:53:33,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974080863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:53:33,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:53:33,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:53:33,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994099199] [2024-06-21 18:53:33,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:53:33,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:53:33,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:53:33,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:53:33,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:53:33,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:53:33,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 310 transitions, 2860 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) [2024-06-21 18:53:33,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:53:33,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:53:33,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:53:34,454 INFO L124 PetriNetUnfolderBase]: 574/1042 cut-off events. [2024-06-21 18:53:34,454 INFO L125 PetriNetUnfolderBase]: For 278987/278987 co-relation queries the response was YES. [2024-06-21 18:53:34,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9683 conditions, 1042 events. 574/1042 cut-off events. For 278987/278987 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5360 event pairs, 54 based on Foata normal form. 1/1042 useless extension candidates. Maximal degree in co-relation 9524. Up to 818 conditions per place. [2024-06-21 18:53:34,467 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 247 selfloop transitions, 70 changer transitions 0/320 dead transitions. [2024-06-21 18:53:34,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 320 transitions, 3518 flow [2024-06-21 18:53:34,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:53:34,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:53:34,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-21 18:53:34,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-06-21 18:53:34,468 INFO L175 Difference]: Start difference. First operand has 337 places, 310 transitions, 2860 flow. Second operand 11 states and 145 transitions. [2024-06-21 18:53:34,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 320 transitions, 3518 flow [2024-06-21 18:53:35,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 320 transitions, 3303 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-21 18:53:35,421 INFO L231 Difference]: Finished difference. Result has 339 places, 310 transitions, 2790 flow [2024-06-21 18:53:35,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2645, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2790, PETRI_PLACES=339, PETRI_TRANSITIONS=310} [2024-06-21 18:53:35,421 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 307 predicate places. [2024-06-21 18:53:35,421 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 310 transitions, 2790 flow [2024-06-21 18:53:35,422 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) [2024-06-21 18:53:35,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:53:35,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:53:35,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-21 18:53:35,422 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:53:35,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:53:35,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1859570712, now seen corresponding path program 5 times [2024-06-21 18:53:35,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:53:35,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244943524] [2024-06-21 18:53:35,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:53:35,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:53:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:53:36,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:53:36,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:53:36,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244943524] [2024-06-21 18:53:36,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244943524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:53:36,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:53:36,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:53:36,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713812895] [2024-06-21 18:53:36,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:53:36,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:53:36,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:53:36,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:53:36,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:53:36,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:53:36,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 310 transitions, 2790 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:53:36,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:53:36,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:53:36,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:53:37,301 INFO L124 PetriNetUnfolderBase]: 572/1039 cut-off events. [2024-06-21 18:53:37,301 INFO L125 PetriNetUnfolderBase]: For 274859/274859 co-relation queries the response was YES. [2024-06-21 18:53:37,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9513 conditions, 1039 events. 572/1039 cut-off events. For 274859/274859 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5365 event pairs, 47 based on Foata normal form. 1/1039 useless extension candidates. Maximal degree in co-relation 9352. Up to 841 conditions per place. [2024-06-21 18:53:37,313 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 245 selfloop transitions, 73 changer transitions 0/321 dead transitions. [2024-06-21 18:53:37,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 321 transitions, 3452 flow [2024-06-21 18:53:37,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:53:37,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:53:37,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-21 18:53:37,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-21 18:53:37,314 INFO L175 Difference]: Start difference. First operand has 339 places, 310 transitions, 2790 flow. Second operand 9 states and 126 transitions. [2024-06-21 18:53:37,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 321 transitions, 3452 flow [2024-06-21 18:53:38,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 321 transitions, 3234 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-21 18:53:38,173 INFO L231 Difference]: Finished difference. Result has 336 places, 310 transitions, 2723 flow [2024-06-21 18:53:38,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2572, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2723, PETRI_PLACES=336, PETRI_TRANSITIONS=310} [2024-06-21 18:53:38,173 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 304 predicate places. [2024-06-21 18:53:38,173 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 310 transitions, 2723 flow [2024-06-21 18:53:38,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:53:38,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:53:38,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:53:38,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-21 18:53:38,174 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:53:38,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:53:38,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1859570371, now seen corresponding path program 1 times [2024-06-21 18:53:38,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:53:38,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125418742] [2024-06-21 18:53:38,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:53:38,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:53:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:53:39,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:53:39,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:53:39,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125418742] [2024-06-21 18:53:39,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125418742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:53:39,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:53:39,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:53:39,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160658758] [2024-06-21 18:53:39,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:53:39,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:53:39,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:53:39,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:53:39,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:53:39,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-21 18:53:39,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 310 transitions, 2723 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:53:39,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:53:39,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-21 18:53:39,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:53:40,183 INFO L124 PetriNetUnfolderBase]: 543/1007 cut-off events. [2024-06-21 18:53:40,183 INFO L125 PetriNetUnfolderBase]: For 279991/279992 co-relation queries the response was YES. [2024-06-21 18:53:40,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9309 conditions, 1007 events. 543/1007 cut-off events. For 279991/279992 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5319 event pairs, 64 based on Foata normal form. 2/1003 useless extension candidates. Maximal degree in co-relation 9148. Up to 824 conditions per place. [2024-06-21 18:53:40,195 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 254 selfloop transitions, 25 changer transitions 0/323 dead transitions. [2024-06-21 18:53:40,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 323 transitions, 3333 flow [2024-06-21 18:53:40,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:53:40,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:53:40,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-06-21 18:53:40,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-21 18:53:40,196 INFO L175 Difference]: Start difference. First operand has 336 places, 310 transitions, 2723 flow. Second operand 9 states and 129 transitions. [2024-06-21 18:53:40,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 323 transitions, 3333 flow [2024-06-21 18:53:41,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 323 transitions, 3179 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-21 18:53:41,245 INFO L231 Difference]: Finished difference. Result has 337 places, 312 transitions, 2654 flow [2024-06-21 18:53:41,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2569, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2654, PETRI_PLACES=337, PETRI_TRANSITIONS=312} [2024-06-21 18:53:41,245 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 305 predicate places. [2024-06-21 18:53:41,246 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 312 transitions, 2654 flow [2024-06-21 18:53:41,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:53:41,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:53:41,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:53:41,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-21 18:53:41,246 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:53:41,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:53:41,246 INFO L85 PathProgramCache]: Analyzing trace with hash 2110463414, now seen corresponding path program 6 times [2024-06-21 18:53:41,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:53:41,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717988197] [2024-06-21 18:53:41,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:53:41,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:53:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:53:42,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:53:42,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:53:42,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717988197] [2024-06-21 18:53:42,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717988197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:53:42,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:53:42,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:53:42,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765130520] [2024-06-21 18:53:42,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:53:42,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:53:42,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:53:42,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:53:42,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:53:42,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:53:42,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 312 transitions, 2654 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:53:42,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:53:42,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:53:42,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:53:43,027 INFO L124 PetriNetUnfolderBase]: 588/1064 cut-off events. [2024-06-21 18:53:43,027 INFO L125 PetriNetUnfolderBase]: For 299114/299114 co-relation queries the response was YES. [2024-06-21 18:53:43,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9932 conditions, 1064 events. 588/1064 cut-off events. For 299114/299114 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5510 event pairs, 61 based on Foata normal form. 1/1064 useless extension candidates. Maximal degree in co-relation 9770. Up to 768 conditions per place. [2024-06-21 18:53:43,036 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 251 selfloop transitions, 78 changer transitions 0/332 dead transitions. [2024-06-21 18:53:43,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 332 transitions, 4268 flow [2024-06-21 18:53:43,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:53:43,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:53:43,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-21 18:53:43,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45791245791245794 [2024-06-21 18:53:43,038 INFO L175 Difference]: Start difference. First operand has 337 places, 312 transitions, 2654 flow. Second operand 9 states and 136 transitions. [2024-06-21 18:53:43,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 332 transitions, 4268 flow [2024-06-21 18:53:44,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 332 transitions, 4199 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-21 18:53:44,050 INFO L231 Difference]: Finished difference. Result has 339 places, 320 transitions, 2894 flow [2024-06-21 18:53:44,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2585, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2894, PETRI_PLACES=339, PETRI_TRANSITIONS=320} [2024-06-21 18:53:44,050 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 307 predicate places. [2024-06-21 18:53:44,050 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 320 transitions, 2894 flow [2024-06-21 18:53:44,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:53:44,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:53:44,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:53:44,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-21 18:53:44,050 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:53:44,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:53:44,051 INFO L85 PathProgramCache]: Analyzing trace with hash -2111298783, now seen corresponding path program 11 times [2024-06-21 18:53:44,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:53:44,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422578079] [2024-06-21 18:53:44,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:53:44,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:53:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:53:45,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:53:45,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:53:45,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422578079] [2024-06-21 18:53:45,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422578079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:53:45,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:53:45,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:53:45,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157639970] [2024-06-21 18:53:45,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:53:45,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:53:45,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:53:45,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:53:45,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:53:45,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:53:45,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 320 transitions, 2894 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) [2024-06-21 18:53:45,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:53:45,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:53:45,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:53:45,826 INFO L124 PetriNetUnfolderBase]: 601/1086 cut-off events. [2024-06-21 18:53:45,826 INFO L125 PetriNetUnfolderBase]: For 321698/321698 co-relation queries the response was YES. [2024-06-21 18:53:45,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10519 conditions, 1086 events. 601/1086 cut-off events. For 321698/321698 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5628 event pairs, 62 based on Foata normal form. 1/1086 useless extension candidates. Maximal degree in co-relation 10356. Up to 663 conditions per place. [2024-06-21 18:53:45,839 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 223 selfloop transitions, 114 changer transitions 0/340 dead transitions. [2024-06-21 18:53:45,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 340 transitions, 4530 flow [2024-06-21 18:53:45,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:53:45,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:53:45,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-21 18:53:45,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-21 18:53:45,840 INFO L175 Difference]: Start difference. First operand has 339 places, 320 transitions, 2894 flow. Second operand 10 states and 139 transitions. [2024-06-21 18:53:45,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 340 transitions, 4530 flow [2024-06-21 18:53:46,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 340 transitions, 4373 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-21 18:53:46,683 INFO L231 Difference]: Finished difference. Result has 345 places, 328 transitions, 3118 flow [2024-06-21 18:53:46,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2737, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3118, PETRI_PLACES=345, PETRI_TRANSITIONS=328} [2024-06-21 18:53:46,683 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 313 predicate places. [2024-06-21 18:53:46,683 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 328 transitions, 3118 flow [2024-06-21 18:53:46,684 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) [2024-06-21 18:53:46,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:53:46,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:53:46,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-21 18:53:46,684 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:53:46,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:53:46,684 INFO L85 PathProgramCache]: Analyzing trace with hash 2110196008, now seen corresponding path program 11 times [2024-06-21 18:53:46,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:53:46,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138707383] [2024-06-21 18:53:46,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:53:46,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:53:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:53:48,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:53:48,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:53:48,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138707383] [2024-06-21 18:53:48,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138707383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:53:48,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:53:48,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:53:48,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546970715] [2024-06-21 18:53:48,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:53:48,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:53:48,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:53:48,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:53:48,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:53:48,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:53:48,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 328 transitions, 3118 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) [2024-06-21 18:53:48,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:53:48,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:53:48,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:53:48,961 INFO L124 PetriNetUnfolderBase]: 614/1111 cut-off events. [2024-06-21 18:53:48,961 INFO L125 PetriNetUnfolderBase]: For 344975/344975 co-relation queries the response was YES. [2024-06-21 18:53:48,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11145 conditions, 1111 events. 614/1111 cut-off events. For 344975/344975 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5818 event pairs, 70 based on Foata normal form. 1/1111 useless extension candidates. Maximal degree in co-relation 10980. Up to 676 conditions per place. [2024-06-21 18:53:48,971 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 230 selfloop transitions, 115 changer transitions 0/348 dead transitions. [2024-06-21 18:53:48,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 348 transitions, 4848 flow [2024-06-21 18:53:48,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:53:48,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:53:48,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 18:53:48,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-21 18:53:48,972 INFO L175 Difference]: Start difference. First operand has 345 places, 328 transitions, 3118 flow. Second operand 11 states and 147 transitions. [2024-06-21 18:53:48,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 348 transitions, 4848 flow [2024-06-21 18:53:50,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 348 transitions, 4759 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-21 18:53:50,150 INFO L231 Difference]: Finished difference. Result has 352 places, 336 transitions, 3484 flow [2024-06-21 18:53:50,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3029, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3484, PETRI_PLACES=352, PETRI_TRANSITIONS=336} [2024-06-21 18:53:50,151 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 320 predicate places. [2024-06-21 18:53:50,151 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 336 transitions, 3484 flow [2024-06-21 18:53:50,151 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) [2024-06-21 18:53:50,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:53:50,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:53:50,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-21 18:53:50,151 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:53:50,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:53:50,151 INFO L85 PathProgramCache]: Analyzing trace with hash 4986717, now seen corresponding path program 2 times [2024-06-21 18:53:50,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:53:50,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517495747] [2024-06-21 18:53:50,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:53:50,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:53:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:53:51,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:53:51,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:53:51,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517495747] [2024-06-21 18:53:51,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517495747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:53:51,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:53:51,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:53:51,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915246610] [2024-06-21 18:53:51,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:53:51,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:53:51,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:53:51,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:53:51,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:53:52,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:53:52,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 336 transitions, 3484 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:53:52,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:53:52,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:53:52,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:53:52,603 INFO L124 PetriNetUnfolderBase]: 589/1084 cut-off events. [2024-06-21 18:53:52,603 INFO L125 PetriNetUnfolderBase]: For 366156/366157 co-relation queries the response was YES. [2024-06-21 18:53:52,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11336 conditions, 1084 events. 589/1084 cut-off events. For 366156/366157 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5781 event pairs, 81 based on Foata normal form. 2/1077 useless extension candidates. Maximal degree in co-relation 11169. Up to 903 conditions per place. [2024-06-21 18:53:52,618 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 281 selfloop transitions, 22 changer transitions 0/351 dead transitions. [2024-06-21 18:53:52,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 351 transitions, 4442 flow [2024-06-21 18:53:52,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:53:52,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:53:52,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-21 18:53:52,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2024-06-21 18:53:52,619 INFO L175 Difference]: Start difference. First operand has 352 places, 336 transitions, 3484 flow. Second operand 12 states and 147 transitions. [2024-06-21 18:53:52,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 351 transitions, 4442 flow [2024-06-21 18:53:53,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 351 transitions, 4334 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-21 18:53:53,701 INFO L231 Difference]: Finished difference. Result has 359 places, 340 transitions, 3489 flow [2024-06-21 18:53:53,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3376, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3489, PETRI_PLACES=359, PETRI_TRANSITIONS=340} [2024-06-21 18:53:53,702 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 327 predicate places. [2024-06-21 18:53:53,702 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 340 transitions, 3489 flow [2024-06-21 18:53:53,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:53:53,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:53:53,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:53:53,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-21 18:53:53,702 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:53:53,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:53:53,703 INFO L85 PathProgramCache]: Analyzing trace with hash -320417400, now seen corresponding path program 12 times [2024-06-21 18:53:53,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:53:53,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751575791] [2024-06-21 18:53:53,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:53:53,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:53:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:53:55,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:53:55,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:53:55,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751575791] [2024-06-21 18:53:55,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751575791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:53:55,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:53:55,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:53:55,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704689116] [2024-06-21 18:53:55,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:53:55,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:53:55,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:53:55,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:53:55,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:53:55,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:53:55,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 340 transitions, 3489 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) [2024-06-21 18:53:55,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:53:55,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:53:55,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:53:55,963 INFO L124 PetriNetUnfolderBase]: 620/1121 cut-off events. [2024-06-21 18:53:55,963 INFO L125 PetriNetUnfolderBase]: For 355566/355566 co-relation queries the response was YES. [2024-06-21 18:53:55,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11420 conditions, 1121 events. 620/1121 cut-off events. For 355566/355566 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5855 event pairs, 61 based on Foata normal form. 1/1121 useless extension candidates. Maximal degree in co-relation 11251. Up to 687 conditions per place. [2024-06-21 18:53:55,977 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 202 selfloop transitions, 145 changer transitions 0/350 dead transitions. [2024-06-21 18:53:55,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 350 transitions, 4475 flow [2024-06-21 18:53:55,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:53:55,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:53:55,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 18:53:55,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-21 18:53:55,978 INFO L175 Difference]: Start difference. First operand has 359 places, 340 transitions, 3489 flow. Second operand 11 states and 141 transitions. [2024-06-21 18:53:55,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 350 transitions, 4475 flow [2024-06-21 18:53:57,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 350 transitions, 4382 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-21 18:53:57,123 INFO L231 Difference]: Finished difference. Result has 362 places, 340 transitions, 3691 flow [2024-06-21 18:53:57,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3396, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3691, PETRI_PLACES=362, PETRI_TRANSITIONS=340} [2024-06-21 18:53:57,123 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 330 predicate places. [2024-06-21 18:53:57,123 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 340 transitions, 3691 flow [2024-06-21 18:53:57,124 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) [2024-06-21 18:53:57,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:53:57,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:53:57,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-21 18:53:57,124 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:53:57,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:53:57,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1936609693, now seen corresponding path program 12 times [2024-06-21 18:53:57,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:53:57,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913079303] [2024-06-21 18:53:57,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:53:57,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:53:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:53:58,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:53:58,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:53:58,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913079303] [2024-06-21 18:53:58,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913079303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:53:58,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:53:58,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:53:58,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484179317] [2024-06-21 18:53:58,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:53:58,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:53:58,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:53:58,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:53:58,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:53:58,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:53:58,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 340 transitions, 3691 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) [2024-06-21 18:53:58,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:53:58,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:53:58,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:53:59,007 INFO L124 PetriNetUnfolderBase]: 623/1126 cut-off events. [2024-06-21 18:53:59,007 INFO L125 PetriNetUnfolderBase]: For 361033/361033 co-relation queries the response was YES. [2024-06-21 18:53:59,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11711 conditions, 1126 events. 623/1126 cut-off events. For 361033/361033 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5895 event pairs, 53 based on Foata normal form. 1/1126 useless extension candidates. Maximal degree in co-relation 11540. Up to 698 conditions per place. [2024-06-21 18:53:59,022 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 218 selfloop transitions, 132 changer transitions 0/353 dead transitions. [2024-06-21 18:53:59,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 353 transitions, 4995 flow [2024-06-21 18:53:59,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:53:59,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:53:59,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-21 18:53:59,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 18:53:59,023 INFO L175 Difference]: Start difference. First operand has 362 places, 340 transitions, 3691 flow. Second operand 10 states and 135 transitions. [2024-06-21 18:53:59,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 353 transitions, 4995 flow [2024-06-21 18:54:00,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 353 transitions, 4728 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-21 18:54:00,082 INFO L231 Difference]: Finished difference. Result has 362 places, 342 transitions, 3729 flow [2024-06-21 18:54:00,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3424, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3729, PETRI_PLACES=362, PETRI_TRANSITIONS=342} [2024-06-21 18:54:00,083 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 330 predicate places. [2024-06-21 18:54:00,083 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 342 transitions, 3729 flow [2024-06-21 18:54:00,083 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) [2024-06-21 18:54:00,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:54:00,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:54:00,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-21 18:54:00,083 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:54:00,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:54:00,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1936601974, now seen corresponding path program 7 times [2024-06-21 18:54:00,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:54:00,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941070230] [2024-06-21 18:54:00,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:54:00,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:54:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:54:01,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:54:01,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:54:01,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941070230] [2024-06-21 18:54:01,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941070230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:54:01,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:54:01,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:54:01,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933323921] [2024-06-21 18:54:01,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:54:01,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:54:01,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:54:01,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:54:01,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:54:01,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:54:01,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 342 transitions, 3729 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:54:01,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:54:01,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:54:01,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:54:01,935 INFO L124 PetriNetUnfolderBase]: 626/1130 cut-off events. [2024-06-21 18:54:01,935 INFO L125 PetriNetUnfolderBase]: For 366348/366348 co-relation queries the response was YES. [2024-06-21 18:54:01,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11753 conditions, 1130 events. 626/1130 cut-off events. For 366348/366348 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 5901 event pairs, 52 based on Foata normal form. 1/1130 useless extension candidates. Maximal degree in co-relation 11582. Up to 829 conditions per place. [2024-06-21 18:54:01,949 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 263 selfloop transitions, 89 changer transitions 0/355 dead transitions. [2024-06-21 18:54:01,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 355 transitions, 5041 flow [2024-06-21 18:54:01,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:54:01,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:54:01,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-21 18:54:01,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-21 18:54:01,950 INFO L175 Difference]: Start difference. First operand has 362 places, 342 transitions, 3729 flow. Second operand 9 states and 132 transitions. [2024-06-21 18:54:01,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 355 transitions, 5041 flow [2024-06-21 18:54:03,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 355 transitions, 4818 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-21 18:54:03,122 INFO L231 Difference]: Finished difference. Result has 364 places, 344 transitions, 3725 flow [2024-06-21 18:54:03,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3506, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3725, PETRI_PLACES=364, PETRI_TRANSITIONS=344} [2024-06-21 18:54:03,123 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 332 predicate places. [2024-06-21 18:54:03,123 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 344 transitions, 3725 flow [2024-06-21 18:54:03,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:54:03,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:54:03,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:54:03,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-21 18:54:03,124 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:54:03,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:54:03,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1936342504, now seen corresponding path program 8 times [2024-06-21 18:54:03,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:54:03,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336831863] [2024-06-21 18:54:03,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:54:03,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:54:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:54:04,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:54:04,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:54:04,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336831863] [2024-06-21 18:54:04,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336831863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:54:04,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:54:04,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:54:04,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141877340] [2024-06-21 18:54:04,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:54:04,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:54:04,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:54:04,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:54:04,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:54:04,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:54:04,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 344 transitions, 3725 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:54:04,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:54:04,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:54:04,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:54:04,972 INFO L124 PetriNetUnfolderBase]: 634/1143 cut-off events. [2024-06-21 18:54:04,972 INFO L125 PetriNetUnfolderBase]: For 381188/381188 co-relation queries the response was YES. [2024-06-21 18:54:04,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11972 conditions, 1143 events. 634/1143 cut-off events. For 381188/381188 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 5982 event pairs, 52 based on Foata normal form. 1/1143 useless extension candidates. Maximal degree in co-relation 11801. Up to 839 conditions per place. [2024-06-21 18:54:04,984 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 267 selfloop transitions, 90 changer transitions 0/360 dead transitions. [2024-06-21 18:54:04,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 360 transitions, 5373 flow [2024-06-21 18:54:04,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:54:04,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:54:04,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-21 18:54:04,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-21 18:54:04,986 INFO L175 Difference]: Start difference. First operand has 364 places, 344 transitions, 3725 flow. Second operand 9 states and 135 transitions. [2024-06-21 18:54:04,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 360 transitions, 5373 flow [2024-06-21 18:54:06,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 360 transitions, 5144 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-21 18:54:06,243 INFO L231 Difference]: Finished difference. Result has 366 places, 348 transitions, 3761 flow [2024-06-21 18:54:06,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3512, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3761, PETRI_PLACES=366, PETRI_TRANSITIONS=348} [2024-06-21 18:54:06,244 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 334 predicate places. [2024-06-21 18:54:06,244 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 348 transitions, 3761 flow [2024-06-21 18:54:06,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:54:06,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:54:06,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:54:06,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-21 18:54:06,244 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:54:06,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:54:06,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1936333204, now seen corresponding path program 9 times [2024-06-21 18:54:06,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:54:06,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222543457] [2024-06-21 18:54:06,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:54:06,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:54:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:54:07,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:54:07,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:54:07,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222543457] [2024-06-21 18:54:07,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222543457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:54:07,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:54:07,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:54:07,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331676468] [2024-06-21 18:54:07,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:54:07,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:54:07,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:54:07,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:54:07,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:54:07,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:54:07,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 348 transitions, 3761 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:54:07,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:54:07,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:54:07,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:54:08,195 INFO L124 PetriNetUnfolderBase]: 632/1140 cut-off events. [2024-06-21 18:54:08,195 INFO L125 PetriNetUnfolderBase]: For 376804/376804 co-relation queries the response was YES. [2024-06-21 18:54:08,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11811 conditions, 1140 events. 632/1140 cut-off events. For 376804/376804 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 5989 event pairs, 52 based on Foata normal form. 1/1140 useless extension candidates. Maximal degree in co-relation 11639. Up to 837 conditions per place. [2024-06-21 18:54:08,211 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 265 selfloop transitions, 91 changer transitions 0/359 dead transitions. [2024-06-21 18:54:08,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 359 transitions, 5053 flow [2024-06-21 18:54:08,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:54:08,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:54:08,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-21 18:54:08,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478114478114478 [2024-06-21 18:54:08,212 INFO L175 Difference]: Start difference. First operand has 366 places, 348 transitions, 3761 flow. Second operand 9 states and 133 transitions. [2024-06-21 18:54:08,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 359 transitions, 5053 flow [2024-06-21 18:54:09,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 359 transitions, 4847 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-21 18:54:09,428 INFO L231 Difference]: Finished difference. Result has 370 places, 348 transitions, 3742 flow [2024-06-21 18:54:09,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3555, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3742, PETRI_PLACES=370, PETRI_TRANSITIONS=348} [2024-06-21 18:54:09,429 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 338 predicate places. [2024-06-21 18:54:09,429 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 348 transitions, 3742 flow [2024-06-21 18:54:09,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:54:09,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:54:09,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:54:09,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-21 18:54:09,429 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:54:09,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:54:09,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1936332863, now seen corresponding path program 3 times [2024-06-21 18:54:09,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:54:09,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772194803] [2024-06-21 18:54:09,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:54:09,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:54:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:54:11,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:54:11,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:54:11,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772194803] [2024-06-21 18:54:11,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772194803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:54:11,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:54:11,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:54:11,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909382335] [2024-06-21 18:54:11,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:54:11,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:54:11,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:54:11,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:54:11,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:54:11,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-21 18:54:11,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 348 transitions, 3742 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:54:11,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:54:11,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-21 18:54:11,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:54:11,586 INFO L124 PetriNetUnfolderBase]: 601/1107 cut-off events. [2024-06-21 18:54:11,586 INFO L125 PetriNetUnfolderBase]: For 388847/388848 co-relation queries the response was YES. [2024-06-21 18:54:11,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11614 conditions, 1107 events. 601/1107 cut-off events. For 388847/388848 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 5935 event pairs, 58 based on Foata normal form. 2/1104 useless extension candidates. Maximal degree in co-relation 11441. Up to 864 conditions per place. [2024-06-21 18:54:11,598 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 267 selfloop transitions, 41 changer transitions 0/359 dead transitions. [2024-06-21 18:54:11,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 359 transitions, 4412 flow [2024-06-21 18:54:11,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:54:11,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:54:11,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-21 18:54:11,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478114478114478 [2024-06-21 18:54:11,599 INFO L175 Difference]: Start difference. First operand has 370 places, 348 transitions, 3742 flow. Second operand 9 states and 133 transitions. [2024-06-21 18:54:11,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 359 transitions, 4412 flow [2024-06-21 18:54:12,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 359 transitions, 4225 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-21 18:54:12,806 INFO L231 Difference]: Finished difference. Result has 371 places, 350 transitions, 3680 flow [2024-06-21 18:54:12,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3555, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3680, PETRI_PLACES=371, PETRI_TRANSITIONS=350} [2024-06-21 18:54:12,806 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 339 predicate places. [2024-06-21 18:54:12,807 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 350 transitions, 3680 flow [2024-06-21 18:54:12,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:54:12,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:54:12,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:54:12,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-21 18:54:12,807 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:54:12,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:54:12,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1936342783, now seen corresponding path program 13 times [2024-06-21 18:54:12,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:54:12,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128938919] [2024-06-21 18:54:12,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:54:12,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:54:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:54:14,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:54:14,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:54:14,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128938919] [2024-06-21 18:54:14,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128938919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:54:14,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:54:14,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:54:14,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142403293] [2024-06-21 18:54:14,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:54:14,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:54:14,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:54:14,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:54:14,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:54:14,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:54:14,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 350 transitions, 3680 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) [2024-06-21 18:54:14,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:54:14,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:54:14,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:54:14,659 INFO L124 PetriNetUnfolderBase]: 643/1157 cut-off events. [2024-06-21 18:54:14,659 INFO L125 PetriNetUnfolderBase]: For 396745/396745 co-relation queries the response was YES. [2024-06-21 18:54:14,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12052 conditions, 1157 events. 643/1157 cut-off events. For 396745/396745 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6078 event pairs, 53 based on Foata normal form. 1/1157 useless extension candidates. Maximal degree in co-relation 11878. Up to 728 conditions per place. [2024-06-21 18:54:14,674 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 230 selfloop transitions, 133 changer transitions 0/366 dead transitions. [2024-06-21 18:54:14,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 366 transitions, 5338 flow [2024-06-21 18:54:14,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:54:14,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:54:14,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-21 18:54:14,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-21 18:54:14,675 INFO L175 Difference]: Start difference. First operand has 371 places, 350 transitions, 3680 flow. Second operand 10 states and 138 transitions. [2024-06-21 18:54:14,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 366 transitions, 5338 flow [2024-06-21 18:54:15,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 366 transitions, 5229 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-21 18:54:15,945 INFO L231 Difference]: Finished difference. Result has 374 places, 354 transitions, 3902 flow [2024-06-21 18:54:15,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3571, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3902, PETRI_PLACES=374, PETRI_TRANSITIONS=354} [2024-06-21 18:54:15,946 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 342 predicate places. [2024-06-21 18:54:15,946 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 354 transitions, 3902 flow [2024-06-21 18:54:15,946 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) [2024-06-21 18:54:15,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:54:15,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:54:15,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-21 18:54:15,946 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:54:15,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:54:15,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1936602253, now seen corresponding path program 14 times [2024-06-21 18:54:15,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:54:15,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127021948] [2024-06-21 18:54:15,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:54:15,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:54:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:54:17,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:54:17,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:54:17,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127021948] [2024-06-21 18:54:17,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127021948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:54:17,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:54:17,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:54:17,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132344445] [2024-06-21 18:54:17,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:54:17,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:54:17,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:54:17,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:54:17,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:54:17,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:54:17,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 354 transitions, 3902 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) [2024-06-21 18:54:17,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:54:17,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:54:17,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:54:17,847 INFO L124 PetriNetUnfolderBase]: 641/1154 cut-off events. [2024-06-21 18:54:17,847 INFO L125 PetriNetUnfolderBase]: For 392700/392700 co-relation queries the response was YES. [2024-06-21 18:54:17,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12094 conditions, 1154 events. 641/1154 cut-off events. For 392700/392700 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6054 event pairs, 53 based on Foata normal form. 1/1154 useless extension candidates. Maximal degree in co-relation 11918. Up to 726 conditions per place. [2024-06-21 18:54:17,863 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 228 selfloop transitions, 134 changer transitions 0/365 dead transitions. [2024-06-21 18:54:17,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 365 transitions, 5218 flow [2024-06-21 18:54:17,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:54:17,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:54:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-21 18:54:17,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121212121212121 [2024-06-21 18:54:17,864 INFO L175 Difference]: Start difference. First operand has 374 places, 354 transitions, 3902 flow. Second operand 10 states and 136 transitions. [2024-06-21 18:54:17,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 365 transitions, 5218 flow [2024-06-21 18:54:19,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 365 transitions, 4931 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-21 18:54:19,210 INFO L231 Difference]: Finished difference. Result has 378 places, 354 transitions, 3888 flow [2024-06-21 18:54:19,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3615, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3888, PETRI_PLACES=378, PETRI_TRANSITIONS=354} [2024-06-21 18:54:19,210 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 346 predicate places. [2024-06-21 18:54:19,210 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 354 transitions, 3888 flow [2024-06-21 18:54:19,210 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) [2024-06-21 18:54:19,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:54:19,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:54:19,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-21 18:54:19,211 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:54:19,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:54:19,211 INFO L85 PathProgramCache]: Analyzing trace with hash 4600426, now seen corresponding path program 10 times [2024-06-21 18:54:19,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:54:19,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005059125] [2024-06-21 18:54:19,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:54:19,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:54:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:54:20,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:54:20,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:54:20,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005059125] [2024-06-21 18:54:20,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005059125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:54:20,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:54:20,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:54:20,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333650774] [2024-06-21 18:54:20,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:54:20,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:54:20,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:54:20,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:54:20,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:54:20,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:54:20,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 354 transitions, 3888 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) [2024-06-21 18:54:20,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:54:20,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:54:20,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:54:21,212 INFO L124 PetriNetUnfolderBase]: 644/1161 cut-off events. [2024-06-21 18:54:21,212 INFO L125 PetriNetUnfolderBase]: For 398370/398370 co-relation queries the response was YES. [2024-06-21 18:54:21,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12147 conditions, 1161 events. 644/1161 cut-off events. For 398370/398370 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6092 event pairs, 92 based on Foata normal form. 1/1161 useless extension candidates. Maximal degree in co-relation 11970. Up to 1079 conditions per place. [2024-06-21 18:54:21,228 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 344 selfloop transitions, 18 changer transitions 0/365 dead transitions. [2024-06-21 18:54:21,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 365 transitions, 4666 flow [2024-06-21 18:54:21,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:54:21,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:54:21,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-21 18:54:21,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-21 18:54:21,229 INFO L175 Difference]: Start difference. First operand has 378 places, 354 transitions, 3888 flow. Second operand 10 states and 117 transitions. [2024-06-21 18:54:21,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 365 transitions, 4666 flow [2024-06-21 18:54:22,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 365 transitions, 4403 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-21 18:54:22,290 INFO L231 Difference]: Finished difference. Result has 380 places, 356 transitions, 3704 flow [2024-06-21 18:54:22,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3625, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3704, PETRI_PLACES=380, PETRI_TRANSITIONS=356} [2024-06-21 18:54:22,290 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 348 predicate places. [2024-06-21 18:54:22,290 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 356 transitions, 3704 flow [2024-06-21 18:54:22,291 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) [2024-06-21 18:54:22,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:54:22,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:54:22,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-21 18:54:22,291 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:54:22,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:54:22,292 INFO L85 PathProgramCache]: Analyzing trace with hash -6450764, now seen corresponding path program 11 times [2024-06-21 18:54:22,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:54:22,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091151076] [2024-06-21 18:54:22,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:54:22,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:54:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:54:23,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:54:23,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:54:23,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091151076] [2024-06-21 18:54:23,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091151076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:54:23,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:54:23,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:54:23,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071422040] [2024-06-21 18:54:23,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:54:23,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:54:23,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:54:23,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:54:23,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:54:23,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:54:23,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 356 transitions, 3704 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:54:23,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:54:23,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:54:23,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:54:24,076 INFO L124 PetriNetUnfolderBase]: 647/1163 cut-off events. [2024-06-21 18:54:24,076 INFO L125 PetriNetUnfolderBase]: For 403461/403461 co-relation queries the response was YES. [2024-06-21 18:54:24,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11999 conditions, 1163 events. 647/1163 cut-off events. For 403461/403461 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6107 event pairs, 52 based on Foata normal form. 1/1163 useless extension candidates. Maximal degree in co-relation 11821. Up to 860 conditions per place. [2024-06-21 18:54:24,090 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 259 selfloop transitions, 107 changer transitions 0/369 dead transitions. [2024-06-21 18:54:24,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 369 transitions, 5074 flow [2024-06-21 18:54:24,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:54:24,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:54:24,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-06-21 18:54:24,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44107744107744107 [2024-06-21 18:54:24,091 INFO L175 Difference]: Start difference. First operand has 380 places, 356 transitions, 3704 flow. Second operand 9 states and 131 transitions. [2024-06-21 18:54:24,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 369 transitions, 5074 flow [2024-06-21 18:54:25,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 369 transitions, 5017 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-21 18:54:25,283 INFO L231 Difference]: Finished difference. Result has 381 places, 358 transitions, 3904 flow [2024-06-21 18:54:25,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3647, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3904, PETRI_PLACES=381, PETRI_TRANSITIONS=358} [2024-06-21 18:54:25,284 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 349 predicate places. [2024-06-21 18:54:25,284 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 358 transitions, 3904 flow [2024-06-21 18:54:25,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:54:25,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:54:25,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:54:25,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-21 18:54:25,284 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:54:25,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:54:25,284 INFO L85 PathProgramCache]: Analyzing trace with hash 2110473055, now seen corresponding path program 4 times [2024-06-21 18:54:25,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:54:25,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613420975] [2024-06-21 18:54:25,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:54:25,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:54:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:54:26,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:54:26,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:54:26,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613420975] [2024-06-21 18:54:26,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613420975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:54:26,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:54:26,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:54:26,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079657829] [2024-06-21 18:54:26,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:54:26,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:54:26,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:54:26,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:54:26,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:54:27,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-21 18:54:27,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 358 transitions, 3904 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:54:27,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:54:27,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-21 18:54:27,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:54:27,385 INFO L124 PetriNetUnfolderBase]: 615/1129 cut-off events. [2024-06-21 18:54:27,386 INFO L125 PetriNetUnfolderBase]: For 416041/416042 co-relation queries the response was YES. [2024-06-21 18:54:27,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11998 conditions, 1129 events. 615/1129 cut-off events. For 416041/416042 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6064 event pairs, 58 based on Foata normal form. 2/1126 useless extension candidates. Maximal degree in co-relation 11820. Up to 884 conditions per place. [2024-06-21 18:54:27,401 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 277 selfloop transitions, 39 changer transitions 0/369 dead transitions. [2024-06-21 18:54:27,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 369 transitions, 4594 flow [2024-06-21 18:54:27,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:54:27,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:54:27,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-06-21 18:54:27,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511784511784512 [2024-06-21 18:54:27,402 INFO L175 Difference]: Start difference. First operand has 381 places, 358 transitions, 3904 flow. Second operand 9 states and 134 transitions. [2024-06-21 18:54:27,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 369 transitions, 4594 flow [2024-06-21 18:54:28,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 369 transitions, 4327 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-21 18:54:28,487 INFO L231 Difference]: Finished difference. Result has 382 places, 360 transitions, 3762 flow [2024-06-21 18:54:28,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3637, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3762, PETRI_PLACES=382, PETRI_TRANSITIONS=360} [2024-06-21 18:54:28,487 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 350 predicate places. [2024-06-21 18:54:28,487 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 360 transitions, 3762 flow [2024-06-21 18:54:28,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:54:28,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:54:28,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:54:28,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-21 18:54:28,488 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:54:28,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:54:28,488 INFO L85 PathProgramCache]: Analyzing trace with hash -6441123, now seen corresponding path program 5 times [2024-06-21 18:54:28,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:54:28,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27767052] [2024-06-21 18:54:28,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:54:28,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:54:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:54:30,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:54:30,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:54:30,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27767052] [2024-06-21 18:54:30,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27767052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:54:30,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:54:30,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:54:30,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832765882] [2024-06-21 18:54:30,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:54:30,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:54:30,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:54:30,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:54:30,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:54:30,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-21 18:54:30,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 360 transitions, 3762 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:54:30,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:54:30,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-21 18:54:30,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:54:30,541 INFO L124 PetriNetUnfolderBase]: 613/1126 cut-off events. [2024-06-21 18:54:30,542 INFO L125 PetriNetUnfolderBase]: For 410236/410237 co-relation queries the response was YES. [2024-06-21 18:54:30,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11716 conditions, 1126 events. 613/1126 cut-off events. For 410236/410237 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6055 event pairs, 58 based on Foata normal form. 2/1123 useless extension candidates. Maximal degree in co-relation 11537. Up to 881 conditions per place. [2024-06-21 18:54:30,556 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 274 selfloop transitions, 44 changer transitions 0/371 dead transitions. [2024-06-21 18:54:30,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 371 transitions, 4460 flow [2024-06-21 18:54:30,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:54:30,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:54:30,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-21 18:54:30,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-21 18:54:30,557 INFO L175 Difference]: Start difference. First operand has 382 places, 360 transitions, 3762 flow. Second operand 9 states and 132 transitions. [2024-06-21 18:54:30,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 371 transitions, 4460 flow [2024-06-21 18:54:31,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 371 transitions, 4351 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-21 18:54:31,953 INFO L231 Difference]: Finished difference. Result has 384 places, 362 transitions, 3792 flow [2024-06-21 18:54:31,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3653, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3792, PETRI_PLACES=384, PETRI_TRANSITIONS=362} [2024-06-21 18:54:31,953 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 352 predicate places. [2024-06-21 18:54:31,954 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 362 transitions, 3792 flow [2024-06-21 18:54:31,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:54:31,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:54:31,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:54:31,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-21 18:54:31,954 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:54:31,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:54:31,954 INFO L85 PathProgramCache]: Analyzing trace with hash -2118923140, now seen corresponding path program 13 times [2024-06-21 18:54:31,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:54:31,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296924959] [2024-06-21 18:54:31,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:54:31,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:54:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:54:33,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:54:33,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:54:33,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296924959] [2024-06-21 18:54:33,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296924959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:54:33,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:54:33,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:54:33,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356906185] [2024-06-21 18:54:33,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:54:33,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:54:33,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:54:33,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:54:33,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:54:33,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:54:33,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 362 transitions, 3792 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) [2024-06-21 18:54:33,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:54:33,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:54:33,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:54:34,130 INFO L124 PetriNetUnfolderBase]: 651/1173 cut-off events. [2024-06-21 18:54:34,131 INFO L125 PetriNetUnfolderBase]: For 408471/408471 co-relation queries the response was YES. [2024-06-21 18:54:34,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12069 conditions, 1173 events. 651/1173 cut-off events. For 408471/408471 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6218 event pairs, 61 based on Foata normal form. 1/1173 useless extension candidates. Maximal degree in co-relation 11889. Up to 738 conditions per place. [2024-06-21 18:54:34,146 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 249 selfloop transitions, 123 changer transitions 0/375 dead transitions. [2024-06-21 18:54:34,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 375 transitions, 5202 flow [2024-06-21 18:54:34,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:54:34,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:54:34,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 18:54:34,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-21 18:54:34,147 INFO L175 Difference]: Start difference. First operand has 384 places, 362 transitions, 3792 flow. Second operand 11 states and 143 transitions. [2024-06-21 18:54:34,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 375 transitions, 5202 flow [2024-06-21 18:54:35,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 375 transitions, 5079 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-21 18:54:35,579 INFO L231 Difference]: Finished difference. Result has 388 places, 364 transitions, 3974 flow [2024-06-21 18:54:35,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3669, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3974, PETRI_PLACES=388, PETRI_TRANSITIONS=364} [2024-06-21 18:54:35,579 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 356 predicate places. [2024-06-21 18:54:35,579 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 364 transitions, 3974 flow [2024-06-21 18:54:35,580 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) [2024-06-21 18:54:35,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:54:35,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:54:35,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-21 18:54:35,580 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:54:35,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:54:35,580 INFO L85 PathProgramCache]: Analyzing trace with hash -6451043, now seen corresponding path program 15 times [2024-06-21 18:54:35,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:54:35,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443718592] [2024-06-21 18:54:35,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:54:35,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:54:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:54:36,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:54:36,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:54:36,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443718592] [2024-06-21 18:54:36,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443718592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:54:36,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:54:36,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:54:36,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115355800] [2024-06-21 18:54:36,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:54:36,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:54:36,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:54:36,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:54:36,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:54:37,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:54:37,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 364 transitions, 3974 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) [2024-06-21 18:54:37,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:54:37,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:54:37,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:54:37,488 INFO L124 PetriNetUnfolderBase]: 649/1170 cut-off events. [2024-06-21 18:54:37,489 INFO L125 PetriNetUnfolderBase]: For 403495/403495 co-relation queries the response was YES. [2024-06-21 18:54:37,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12067 conditions, 1170 events. 649/1170 cut-off events. For 403495/403495 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6174 event pairs, 53 based on Foata normal form. 1/1170 useless extension candidates. Maximal degree in co-relation 11885. Up to 741 conditions per place. [2024-06-21 18:54:37,504 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 207 selfloop transitions, 164 changer transitions 0/374 dead transitions. [2024-06-21 18:54:37,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 374 transitions, 5034 flow [2024-06-21 18:54:37,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:54:37,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:54:37,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-21 18:54:37,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-21 18:54:37,506 INFO L175 Difference]: Start difference. First operand has 388 places, 364 transitions, 3974 flow. Second operand 10 states and 133 transitions. [2024-06-21 18:54:37,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 374 transitions, 5034 flow [2024-06-21 18:54:38,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 374 transitions, 4734 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-21 18:54:38,730 INFO L231 Difference]: Finished difference. Result has 390 places, 364 transitions, 4007 flow [2024-06-21 18:54:38,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3674, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4007, PETRI_PLACES=390, PETRI_TRANSITIONS=364} [2024-06-21 18:54:38,730 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 358 predicate places. [2024-06-21 18:54:38,730 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 364 transitions, 4007 flow [2024-06-21 18:54:38,731 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) [2024-06-21 18:54:38,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:54:38,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:54:38,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-21 18:54:38,731 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:54:38,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:54:38,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1622633974, now seen corresponding path program 12 times [2024-06-21 18:54:38,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:54:38,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44410994] [2024-06-21 18:54:38,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:54:38,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:54:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:54:40,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:54:40,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:54:40,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44410994] [2024-06-21 18:54:40,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44410994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:54:40,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:54:40,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:54:40,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964491761] [2024-06-21 18:54:40,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:54:40,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:54:40,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:54:40,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:54:40,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:54:40,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:54:40,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 364 transitions, 4007 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:54:40,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:54:40,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:54:40,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:54:40,739 INFO L124 PetriNetUnfolderBase]: 647/1166 cut-off events. [2024-06-21 18:54:40,739 INFO L125 PetriNetUnfolderBase]: For 397375/397375 co-relation queries the response was YES. [2024-06-21 18:54:40,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11958 conditions, 1166 events. 647/1166 cut-off events. For 397375/397375 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6167 event pairs, 52 based on Foata normal form. 1/1166 useless extension candidates. Maximal degree in co-relation 11775. Up to 862 conditions per place. [2024-06-21 18:54:40,755 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 265 selfloop transitions, 106 changer transitions 0/374 dead transitions. [2024-06-21 18:54:40,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 374 transitions, 5069 flow [2024-06-21 18:54:40,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:54:40,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:54:40,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-06-21 18:54:40,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44107744107744107 [2024-06-21 18:54:40,756 INFO L175 Difference]: Start difference. First operand has 390 places, 364 transitions, 4007 flow. Second operand 9 states and 131 transitions. [2024-06-21 18:54:40,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 374 transitions, 5069 flow [2024-06-21 18:54:41,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 374 transitions, 4773 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-21 18:54:41,819 INFO L231 Difference]: Finished difference. Result has 389 places, 364 transitions, 3928 flow [2024-06-21 18:54:41,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3711, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3928, PETRI_PLACES=389, PETRI_TRANSITIONS=364} [2024-06-21 18:54:41,820 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 357 predicate places. [2024-06-21 18:54:41,820 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 364 transitions, 3928 flow [2024-06-21 18:54:41,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:54:41,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:54:41,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:54:41,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-21 18:54:41,820 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:54:41,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:54:41,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1611591743, now seen corresponding path program 6 times [2024-06-21 18:54:41,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:54:41,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736677756] [2024-06-21 18:54:41,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:54:41,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:54:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:54:43,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:54:43,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:54:43,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736677756] [2024-06-21 18:54:43,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736677756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:54:43,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:54:43,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:54:43,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978855388] [2024-06-21 18:54:43,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:54:43,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:54:43,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:54:43,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:54:43,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:54:43,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:54:43,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 364 transitions, 3928 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:54:43,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:54:43,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:54:43,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:54:44,082 INFO L124 PetriNetUnfolderBase]: 610/1122 cut-off events. [2024-06-21 18:54:44,082 INFO L125 PetriNetUnfolderBase]: For 398398/398399 co-relation queries the response was YES. [2024-06-21 18:54:44,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11484 conditions, 1122 events. 610/1122 cut-off events. For 398398/398399 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6074 event pairs, 81 based on Foata normal form. 2/1115 useless extension candidates. Maximal degree in co-relation 11301. Up to 939 conditions per place. [2024-06-21 18:54:44,097 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 302 selfloop transitions, 18 changer transitions 0/373 dead transitions. [2024-06-21 18:54:44,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 373 transitions, 4588 flow [2024-06-21 18:54:44,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:54:44,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:54:44,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 18:54:44,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-21 18:54:44,098 INFO L175 Difference]: Start difference. First operand has 389 places, 364 transitions, 3928 flow. Second operand 10 states and 126 transitions. [2024-06-21 18:54:44,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 373 transitions, 4588 flow [2024-06-21 18:54:45,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 373 transitions, 4348 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-21 18:54:45,205 INFO L231 Difference]: Finished difference. Result has 391 places, 364 transitions, 3729 flow [2024-06-21 18:54:45,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3688, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3729, PETRI_PLACES=391, PETRI_TRANSITIONS=364} [2024-06-21 18:54:45,205 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 359 predicate places. [2024-06-21 18:54:45,206 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 364 transitions, 3729 flow [2024-06-21 18:54:45,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:54:45,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:54:45,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:54:45,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-21 18:54:45,206 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:54:45,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:54:45,206 INFO L85 PathProgramCache]: Analyzing trace with hash 2110472714, now seen corresponding path program 13 times [2024-06-21 18:54:45,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:54:45,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739841505] [2024-06-21 18:54:45,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:54:45,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:54:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:54:46,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:54:46,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:54:46,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739841505] [2024-06-21 18:54:46,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739841505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:54:46,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:54:46,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:54:46,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071567598] [2024-06-21 18:54:46,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:54:46,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:54:46,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:54:46,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:54:46,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:54:46,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:54:46,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 364 transitions, 3729 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:54:46,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:54:46,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:54:46,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:54:47,130 INFO L124 PetriNetUnfolderBase]: 643/1160 cut-off events. [2024-06-21 18:54:47,130 INFO L125 PetriNetUnfolderBase]: For 384950/384950 co-relation queries the response was YES. [2024-06-21 18:54:47,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11407 conditions, 1160 events. 643/1160 cut-off events. For 384950/384950 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6128 event pairs, 52 based on Foata normal form. 1/1160 useless extension candidates. Maximal degree in co-relation 11222. Up to 857 conditions per place. [2024-06-21 18:54:47,146 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 281 selfloop transitions, 90 changer transitions 0/374 dead transitions. [2024-06-21 18:54:47,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 374 transitions, 4795 flow [2024-06-21 18:54:47,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:54:47,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:54:47,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-21 18:54:47,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478114478114478 [2024-06-21 18:54:47,147 INFO L175 Difference]: Start difference. First operand has 391 places, 364 transitions, 3729 flow. Second operand 9 states and 133 transitions. [2024-06-21 18:54:47,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 374 transitions, 4795 flow [2024-06-21 18:54:48,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 374 transitions, 4734 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-21 18:54:48,230 INFO L231 Difference]: Finished difference. Result has 391 places, 364 transitions, 3853 flow [2024-06-21 18:54:48,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3668, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3853, PETRI_PLACES=391, PETRI_TRANSITIONS=364} [2024-06-21 18:54:48,230 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 359 predicate places. [2024-06-21 18:54:48,230 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 364 transitions, 3853 flow [2024-06-21 18:54:48,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:54:48,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:54:48,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:54:48,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-21 18:54:48,231 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:54:48,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:54:48,231 INFO L85 PathProgramCache]: Analyzing trace with hash 2110203944, now seen corresponding path program 14 times [2024-06-21 18:54:48,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:54:48,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824710376] [2024-06-21 18:54:48,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:54:48,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:54:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:54:49,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:54:49,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:54:49,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824710376] [2024-06-21 18:54:49,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824710376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:54:49,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:54:49,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:54:49,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496765647] [2024-06-21 18:54:49,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:54:49,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:54:49,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:54:49,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:54:49,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:54:49,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:54:49,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 364 transitions, 3853 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:54:49,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:54:49,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:54:49,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:54:50,040 INFO L124 PetriNetUnfolderBase]: 646/1165 cut-off events. [2024-06-21 18:54:50,040 INFO L125 PetriNetUnfolderBase]: For 390204/390204 co-relation queries the response was YES. [2024-06-21 18:54:50,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11613 conditions, 1165 events. 646/1165 cut-off events. For 390204/390204 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6178 event pairs, 52 based on Foata normal form. 1/1165 useless extension candidates. Maximal degree in co-relation 11428. Up to 861 conditions per place. [2024-06-21 18:54:50,055 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 284 selfloop transitions, 89 changer transitions 0/376 dead transitions. [2024-06-21 18:54:50,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 376 transitions, 4961 flow [2024-06-21 18:54:50,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:54:50,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:54:50,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-21 18:54:50,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-21 18:54:50,056 INFO L175 Difference]: Start difference. First operand has 391 places, 364 transitions, 3853 flow. Second operand 9 states and 135 transitions. [2024-06-21 18:54:50,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 376 transitions, 4961 flow [2024-06-21 18:54:51,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 376 transitions, 4780 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-21 18:54:51,163 INFO L231 Difference]: Finished difference. Result has 393 places, 366 transitions, 3891 flow [2024-06-21 18:54:51,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3676, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3891, PETRI_PLACES=393, PETRI_TRANSITIONS=366} [2024-06-21 18:54:51,163 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 361 predicate places. [2024-06-21 18:54:51,163 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 366 transitions, 3891 flow [2024-06-21 18:54:51,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:54:51,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:54:51,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:54:51,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-21 18:54:51,164 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:54:51,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:54:51,164 INFO L85 PathProgramCache]: Analyzing trace with hash 2102844575, now seen corresponding path program 16 times [2024-06-21 18:54:51,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:54:51,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059798466] [2024-06-21 18:54:51,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:54:51,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:54:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:54:52,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:54:52,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:54:52,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059798466] [2024-06-21 18:54:52,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059798466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:54:52,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:54:52,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:54:52,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181004865] [2024-06-21 18:54:52,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:54:52,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:54:52,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:54:52,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:54:52,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:54:52,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:54:52,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 366 transitions, 3891 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) [2024-06-21 18:54:52,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:54:52,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:54:52,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:54:53,053 INFO L124 PetriNetUnfolderBase]: 649/1171 cut-off events. [2024-06-21 18:54:53,053 INFO L125 PetriNetUnfolderBase]: For 395494/395494 co-relation queries the response was YES. [2024-06-21 18:54:53,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11683 conditions, 1171 events. 649/1171 cut-off events. For 395494/395494 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6219 event pairs, 53 based on Foata normal form. 1/1171 useless extension candidates. Maximal degree in co-relation 11497. Up to 741 conditions per place. [2024-06-21 18:54:53,065 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 247 selfloop transitions, 129 changer transitions 0/379 dead transitions. [2024-06-21 18:54:53,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 379 transitions, 5315 flow [2024-06-21 18:54:53,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:54:53,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:54:53,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-21 18:54:53,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121212121212121 [2024-06-21 18:54:53,066 INFO L175 Difference]: Start difference. First operand has 393 places, 366 transitions, 3891 flow. Second operand 10 states and 136 transitions. [2024-06-21 18:54:53,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 379 transitions, 5315 flow [2024-06-21 18:54:54,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 379 transitions, 5128 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-21 18:54:54,299 INFO L231 Difference]: Finished difference. Result has 397 places, 368 transitions, 4003 flow [2024-06-21 18:54:54,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3704, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4003, PETRI_PLACES=397, PETRI_TRANSITIONS=368} [2024-06-21 18:54:54,300 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 365 predicate places. [2024-06-21 18:54:54,300 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 368 transitions, 4003 flow [2024-06-21 18:54:54,300 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) [2024-06-21 18:54:54,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:54:54,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:54:54,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-21 18:54:54,300 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:54:54,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:54:54,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2110203665, now seen corresponding path program 17 times [2024-06-21 18:54:54,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:54:54,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50495340] [2024-06-21 18:54:54,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:54:54,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:54:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:54:55,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:54:55,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:54:55,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50495340] [2024-06-21 18:54:55,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50495340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:54:55,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:54:55,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:54:55,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682437066] [2024-06-21 18:54:55,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:54:55,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:54:55,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:54:55,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:54:55,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:54:55,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:54:55,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 368 transitions, 4003 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) [2024-06-21 18:54:55,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:54:55,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:54:55,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:54:56,142 INFO L124 PetriNetUnfolderBase]: 657/1184 cut-off events. [2024-06-21 18:54:56,142 INFO L125 PetriNetUnfolderBase]: For 412997/412997 co-relation queries the response was YES. [2024-06-21 18:54:56,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12043 conditions, 1184 events. 657/1184 cut-off events. For 412997/412997 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6316 event pairs, 53 based on Foata normal form. 1/1184 useless extension candidates. Maximal degree in co-relation 11855. Up to 751 conditions per place. [2024-06-21 18:54:56,158 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 258 selfloop transitions, 123 changer transitions 0/384 dead transitions. [2024-06-21 18:54:56,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 384 transitions, 5795 flow [2024-06-21 18:54:56,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:54:56,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:54:56,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-21 18:54:56,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-06-21 18:54:56,158 INFO L175 Difference]: Start difference. First operand has 397 places, 368 transitions, 4003 flow. Second operand 10 states and 141 transitions. [2024-06-21 18:54:56,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 384 transitions, 5795 flow [2024-06-21 18:54:57,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 384 transitions, 5527 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-21 18:54:57,368 INFO L231 Difference]: Finished difference. Result has 400 places, 372 transitions, 4066 flow [2024-06-21 18:54:57,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3747, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4066, PETRI_PLACES=400, PETRI_TRANSITIONS=372} [2024-06-21 18:54:57,369 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 368 predicate places. [2024-06-21 18:54:57,369 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 372 transitions, 4066 flow [2024-06-21 18:54:57,369 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) [2024-06-21 18:54:57,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:54:57,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:54:57,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-21 18:54:57,369 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:54:57,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:54:57,370 INFO L85 PathProgramCache]: Analyzing trace with hash 2110196225, now seen corresponding path program 18 times [2024-06-21 18:54:57,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:54:57,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585407940] [2024-06-21 18:54:57,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:54:57,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:54:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:54:58,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:54:58,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:54:58,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585407940] [2024-06-21 18:54:58,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585407940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:54:58,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:54:58,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:54:58,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616997118] [2024-06-21 18:54:58,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:54:58,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:54:58,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:54:58,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:54:58,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:54:58,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:54:58,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 372 transitions, 4066 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) [2024-06-21 18:54:58,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:54:58,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:54:58,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:54:59,291 INFO L124 PetriNetUnfolderBase]: 655/1181 cut-off events. [2024-06-21 18:54:59,291 INFO L125 PetriNetUnfolderBase]: For 406317/406317 co-relation queries the response was YES. [2024-06-21 18:54:59,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11869 conditions, 1181 events. 655/1181 cut-off events. For 406317/406317 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6293 event pairs, 53 based on Foata normal form. 1/1181 useless extension candidates. Maximal degree in co-relation 11680. Up to 749 conditions per place. [2024-06-21 18:54:59,308 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 256 selfloop transitions, 124 changer transitions 0/383 dead transitions. [2024-06-21 18:54:59,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 383 transitions, 5470 flow [2024-06-21 18:54:59,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:54:59,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:54:59,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-21 18:54:59,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-21 18:54:59,309 INFO L175 Difference]: Start difference. First operand has 400 places, 372 transitions, 4066 flow. Second operand 10 states and 139 transitions. [2024-06-21 18:54:59,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 383 transitions, 5470 flow [2024-06-21 18:55:00,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 383 transitions, 5206 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-21 18:55:00,333 INFO L231 Difference]: Finished difference. Result has 404 places, 372 transitions, 4055 flow [2024-06-21 18:55:00,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3802, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4055, PETRI_PLACES=404, PETRI_TRANSITIONS=372} [2024-06-21 18:55:00,333 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 372 predicate places. [2024-06-21 18:55:00,333 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 372 transitions, 4055 flow [2024-06-21 18:55:00,333 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) [2024-06-21 18:55:00,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:55:00,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:55:00,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-21 18:55:00,333 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:55:00,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:55:00,334 INFO L85 PathProgramCache]: Analyzing trace with hash 2102844358, now seen corresponding path program 14 times [2024-06-21 18:55:00,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:55:00,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905725004] [2024-06-21 18:55:00,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:55:00,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:55:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:55:01,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:55:01,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:55:01,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905725004] [2024-06-21 18:55:01,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905725004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:55:01,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:55:01,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:55:01,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72029324] [2024-06-21 18:55:01,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:55:01,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:55:01,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:55:01,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:55:01,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:55:02,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:55:02,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 372 transitions, 4055 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) [2024-06-21 18:55:02,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:55:02,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:55:02,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:55:02,587 INFO L124 PetriNetUnfolderBase]: 658/1188 cut-off events. [2024-06-21 18:55:02,587 INFO L125 PetriNetUnfolderBase]: For 411756/411756 co-relation queries the response was YES. [2024-06-21 18:55:02,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11935 conditions, 1188 events. 658/1188 cut-off events. For 411756/411756 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6364 event pairs, 61 based on Foata normal form. 1/1188 useless extension candidates. Maximal degree in co-relation 11745. Up to 750 conditions per place. [2024-06-21 18:55:02,602 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 260 selfloop transitions, 122 changer transitions 0/385 dead transitions. [2024-06-21 18:55:02,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 385 transitions, 5517 flow [2024-06-21 18:55:02,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:55:02,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:55:02,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 18:55:02,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-21 18:55:02,603 INFO L175 Difference]: Start difference. First operand has 404 places, 372 transitions, 4055 flow. Second operand 11 states and 144 transitions. [2024-06-21 18:55:02,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 385 transitions, 5517 flow [2024-06-21 18:55:03,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 385 transitions, 5279 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-21 18:55:03,636 INFO L231 Difference]: Finished difference. Result has 407 places, 374 transitions, 4116 flow [2024-06-21 18:55:03,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3817, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4116, PETRI_PLACES=407, PETRI_TRANSITIONS=374} [2024-06-21 18:55:03,636 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 375 predicate places. [2024-06-21 18:55:03,637 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 374 transitions, 4116 flow [2024-06-21 18:55:03,637 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) [2024-06-21 18:55:03,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:55:03,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:55:03,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-21 18:55:03,637 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:55:03,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:55:03,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1332576122, now seen corresponding path program 15 times [2024-06-21 18:55:03,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:55:03,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202868001] [2024-06-21 18:55:03,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:55:03,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:55:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:55:05,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:55:05,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:55:05,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202868001] [2024-06-21 18:55:05,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202868001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:55:05,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:55:05,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:55:05,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882986098] [2024-06-21 18:55:05,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:55:05,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:55:05,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:55:05,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:55:05,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:55:05,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:55:05,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 374 transitions, 4116 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:55:05,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:55:05,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:55:05,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:55:05,514 INFO L124 PetriNetUnfolderBase]: 656/1184 cut-off events. [2024-06-21 18:55:05,514 INFO L125 PetriNetUnfolderBase]: For 404788/404788 co-relation queries the response was YES. [2024-06-21 18:55:05,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11796 conditions, 1184 events. 656/1184 cut-off events. For 404788/404788 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6302 event pairs, 61 based on Foata normal form. 1/1184 useless extension candidates. Maximal degree in co-relation 11605. Up to 879 conditions per place. [2024-06-21 18:55:05,529 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 285 selfloop transitions, 95 changer transitions 0/383 dead transitions. [2024-06-21 18:55:05,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 383 transitions, 4896 flow [2024-06-21 18:55:05,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:55:05,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:55:05,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-06-21 18:55:05,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44107744107744107 [2024-06-21 18:55:05,530 INFO L175 Difference]: Start difference. First operand has 407 places, 374 transitions, 4116 flow. Second operand 9 states and 131 transitions. [2024-06-21 18:55:05,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 383 transitions, 4896 flow [2024-06-21 18:55:06,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 383 transitions, 4613 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-21 18:55:06,809 INFO L231 Difference]: Finished difference. Result has 408 places, 374 transitions, 4028 flow [2024-06-21 18:55:06,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3833, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4028, PETRI_PLACES=408, PETRI_TRANSITIONS=374} [2024-06-21 18:55:06,809 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 376 predicate places. [2024-06-21 18:55:06,810 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 374 transitions, 4028 flow [2024-06-21 18:55:06,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:55:06,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:55:06,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:55:06,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-21 18:55:06,810 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:55:06,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:55:06,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1332575843, now seen corresponding path program 19 times [2024-06-21 18:55:06,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:55:06,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026142490] [2024-06-21 18:55:06,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:55:06,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:55:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:55:08,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:55:08,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:55:08,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026142490] [2024-06-21 18:55:08,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026142490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:55:08,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:55:08,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:55:08,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735686164] [2024-06-21 18:55:08,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:55:08,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:55:08,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:55:08,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:55:08,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:55:08,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:55:08,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 374 transitions, 4028 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) [2024-06-21 18:55:08,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:55:08,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:55:08,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:55:08,649 INFO L124 PetriNetUnfolderBase]: 659/1190 cut-off events. [2024-06-21 18:55:08,650 INFO L125 PetriNetUnfolderBase]: For 409413/409413 co-relation queries the response was YES. [2024-06-21 18:55:08,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11766 conditions, 1190 events. 659/1190 cut-off events. For 409413/409413 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6350 event pairs, 53 based on Foata normal form. 1/1190 useless extension candidates. Maximal degree in co-relation 11575. Up to 755 conditions per place. [2024-06-21 18:55:08,667 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 255 selfloop transitions, 129 changer transitions 0/387 dead transitions. [2024-06-21 18:55:08,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 387 transitions, 5490 flow [2024-06-21 18:55:08,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:55:08,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:55:08,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-21 18:55:08,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-21 18:55:08,668 INFO L175 Difference]: Start difference. First operand has 408 places, 374 transitions, 4028 flow. Second operand 10 states and 137 transitions. [2024-06-21 18:55:08,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 387 transitions, 5490 flow [2024-06-21 18:55:09,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 387 transitions, 5267 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 18:55:09,618 INFO L231 Difference]: Finished difference. Result has 408 places, 376 transitions, 4106 flow [2024-06-21 18:55:09,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3805, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4106, PETRI_PLACES=408, PETRI_TRANSITIONS=376} [2024-06-21 18:55:09,619 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 376 predicate places. [2024-06-21 18:55:09,619 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 376 transitions, 4106 flow [2024-06-21 18:55:09,619 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) [2024-06-21 18:55:09,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:55:09,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:55:09,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-21 18:55:09,619 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:55:09,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:55:09,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1332568186, now seen corresponding path program 15 times [2024-06-21 18:55:09,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:55:09,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810894756] [2024-06-21 18:55:09,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:55:09,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:55:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:55:11,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:55:11,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:55:11,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810894756] [2024-06-21 18:55:11,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810894756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:55:11,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:55:11,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:55:11,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750904866] [2024-06-21 18:55:11,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:55:11,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:55:11,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:55:11,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:55:11,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:55:11,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:55:11,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 376 transitions, 4106 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) [2024-06-21 18:55:11,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:55:11,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:55:11,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:55:11,886 INFO L124 PetriNetUnfolderBase]: 657/1187 cut-off events. [2024-06-21 18:55:11,886 INFO L125 PetriNetUnfolderBase]: For 402359/402359 co-relation queries the response was YES. [2024-06-21 18:55:11,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11667 conditions, 1187 events. 657/1187 cut-off events. For 402359/402359 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6340 event pairs, 61 based on Foata normal form. 1/1187 useless extension candidates. Maximal degree in co-relation 11474. Up to 750 conditions per place. [2024-06-21 18:55:11,902 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 263 selfloop transitions, 120 changer transitions 0/386 dead transitions. [2024-06-21 18:55:11,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 386 transitions, 5212 flow [2024-06-21 18:55:11,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:55:11,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:55:11,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-21 18:55:11,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-21 18:55:11,903 INFO L175 Difference]: Start difference. First operand has 408 places, 376 transitions, 4106 flow. Second operand 10 states and 137 transitions. [2024-06-21 18:55:11,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 386 transitions, 5212 flow [2024-06-21 18:55:13,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 386 transitions, 4858 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-21 18:55:13,033 INFO L231 Difference]: Finished difference. Result has 408 places, 376 transitions, 3997 flow [2024-06-21 18:55:13,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3752, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3997, PETRI_PLACES=408, PETRI_TRANSITIONS=376} [2024-06-21 18:55:13,033 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 376 predicate places. [2024-06-21 18:55:13,033 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 376 transitions, 3997 flow [2024-06-21 18:55:13,033 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) [2024-06-21 18:55:13,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:55:13,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:55:13,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-21 18:55:13,034 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:55:13,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:55:13,034 INFO L85 PathProgramCache]: Analyzing trace with hash 2103046385, now seen corresponding path program 20 times [2024-06-21 18:55:13,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:55:13,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016370998] [2024-06-21 18:55:13,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:55:13,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:55:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:55:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:55:14,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:55:14,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016370998] [2024-06-21 18:55:14,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016370998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:55:14,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:55:14,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:55:14,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55193746] [2024-06-21 18:55:14,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:55:14,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:55:14,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:55:14,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:55:14,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:55:14,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:55:14,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 376 transitions, 3997 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) [2024-06-21 18:55:14,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:55:14,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:55:14,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:55:14,993 INFO L124 PetriNetUnfolderBase]: 655/1184 cut-off events. [2024-06-21 18:55:14,994 INFO L125 PetriNetUnfolderBase]: For 389013/389013 co-relation queries the response was YES. [2024-06-21 18:55:15,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11431 conditions, 1184 events. 655/1184 cut-off events. For 389013/389013 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6331 event pairs, 57 based on Foata normal form. 1/1184 useless extension candidates. Maximal degree in co-relation 11237. Up to 750 conditions per place. [2024-06-21 18:55:15,009 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 255 selfloop transitions, 128 changer transitions 0/386 dead transitions. [2024-06-21 18:55:15,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 386 transitions, 5105 flow [2024-06-21 18:55:15,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:55:15,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:55:15,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-21 18:55:15,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-21 18:55:15,010 INFO L175 Difference]: Start difference. First operand has 408 places, 376 transitions, 3997 flow. Second operand 10 states and 137 transitions. [2024-06-21 18:55:15,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 386 transitions, 5105 flow [2024-06-21 18:55:16,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 386 transitions, 4802 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-21 18:55:16,175 INFO L231 Difference]: Finished difference. Result has 407 places, 376 transitions, 3955 flow [2024-06-21 18:55:16,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3694, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3955, PETRI_PLACES=407, PETRI_TRANSITIONS=376} [2024-06-21 18:55:16,176 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 375 predicate places. [2024-06-21 18:55:16,176 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 376 transitions, 3955 flow [2024-06-21 18:55:16,176 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) [2024-06-21 18:55:16,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:55:16,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:55:16,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-21 18:55:16,176 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:55:16,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:55:16,176 INFO L85 PathProgramCache]: Analyzing trace with hash 281900414, now seen corresponding path program 16 times [2024-06-21 18:55:16,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:55:16,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114084016] [2024-06-21 18:55:16,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:55:16,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:55:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:55:17,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:55:17,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:55:17,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114084016] [2024-06-21 18:55:17,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114084016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:55:17,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:55:17,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:55:17,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873480597] [2024-06-21 18:55:17,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:55:17,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:55:17,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:55:17,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:55:17,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:55:17,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:55:17,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 376 transitions, 3955 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) [2024-06-21 18:55:17,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:55:17,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:55:17,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:55:17,932 INFO L124 PetriNetUnfolderBase]: 658/1189 cut-off events. [2024-06-21 18:55:17,932 INFO L125 PetriNetUnfolderBase]: For 398838/398838 co-relation queries the response was YES. [2024-06-21 18:55:17,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11500 conditions, 1189 events. 658/1189 cut-off events. For 398838/398838 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 6369 event pairs, 58 based on Foata normal form. 1/1189 useless extension candidates. Maximal degree in co-relation 11305. Up to 1043 conditions per place. [2024-06-21 18:55:17,948 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 355 selfloop transitions, 38 changer transitions 0/396 dead transitions. [2024-06-21 18:55:17,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 396 transitions, 4847 flow [2024-06-21 18:55:17,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:55:17,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:55:17,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-21 18:55:17,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-21 18:55:17,949 INFO L175 Difference]: Start difference. First operand has 407 places, 376 transitions, 3955 flow. Second operand 10 states and 132 transitions. [2024-06-21 18:55:17,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 396 transitions, 4847 flow [2024-06-21 18:55:19,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 396 transitions, 4552 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-21 18:55:19,538 INFO L231 Difference]: Finished difference. Result has 407 places, 378 transitions, 3803 flow [2024-06-21 18:55:19,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3660, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3803, PETRI_PLACES=407, PETRI_TRANSITIONS=378} [2024-06-21 18:55:19,539 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 375 predicate places. [2024-06-21 18:55:19,539 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 378 transitions, 3803 flow [2024-06-21 18:55:19,539 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) [2024-06-21 18:55:19,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:55:19,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:55:19,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-21 18:55:19,539 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:55:19,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:55:19,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1995846374, now seen corresponding path program 17 times [2024-06-21 18:55:19,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:55:19,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030928446] [2024-06-21 18:55:19,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:55:19,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:55:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:55:20,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:55:20,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:55:20,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030928446] [2024-06-21 18:55:20,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030928446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:55:20,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:55:20,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:55:20,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958175634] [2024-06-21 18:55:20,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:55:20,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:55:20,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:55:20,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:55:20,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:55:20,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:55:20,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 378 transitions, 3803 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) [2024-06-21 18:55:20,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:55:20,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:55:20,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:55:21,220 INFO L124 PetriNetUnfolderBase]: 661/1194 cut-off events. [2024-06-21 18:55:21,220 INFO L125 PetriNetUnfolderBase]: For 403798/403798 co-relation queries the response was YES. [2024-06-21 18:55:21,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11412 conditions, 1194 events. 661/1194 cut-off events. For 403798/403798 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 6390 event pairs, 59 based on Foata normal form. 1/1194 useless extension candidates. Maximal degree in co-relation 11217. Up to 1048 conditions per place. [2024-06-21 18:55:21,237 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 354 selfloop transitions, 42 changer transitions 0/399 dead transitions. [2024-06-21 18:55:21,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 399 transitions, 4707 flow [2024-06-21 18:55:21,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:55:21,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:55:21,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-21 18:55:21,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-21 18:55:21,238 INFO L175 Difference]: Start difference. First operand has 407 places, 378 transitions, 3803 flow. Second operand 11 states and 139 transitions. [2024-06-21 18:55:21,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 399 transitions, 4707 flow [2024-06-21 18:55:22,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 399 transitions, 4586 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-21 18:55:22,517 INFO L231 Difference]: Finished difference. Result has 410 places, 380 transitions, 3837 flow [2024-06-21 18:55:22,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3682, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3837, PETRI_PLACES=410, PETRI_TRANSITIONS=380} [2024-06-21 18:55:22,517 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 378 predicate places. [2024-06-21 18:55:22,517 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 380 transitions, 3837 flow [2024-06-21 18:55:22,517 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) [2024-06-21 18:55:22,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:55:22,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:55:22,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-21 18:55:22,517 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:55:22,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:55:22,518 INFO L85 PathProgramCache]: Analyzing trace with hash 775376160, now seen corresponding path program 18 times [2024-06-21 18:55:22,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:55:22,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323339536] [2024-06-21 18:55:22,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:55:22,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:55:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:55:24,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:55:24,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:55:24,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323339536] [2024-06-21 18:55:24,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323339536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:55:24,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:55:24,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:55:24,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467551301] [2024-06-21 18:55:24,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:55:24,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:55:24,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:55:24,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:55:24,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:55:24,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:55:24,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 380 transitions, 3837 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) [2024-06-21 18:55:24,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:55:24,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:55:24,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:55:24,602 INFO L124 PetriNetUnfolderBase]: 669/1208 cut-off events. [2024-06-21 18:55:24,602 INFO L125 PetriNetUnfolderBase]: For 422691/422691 co-relation queries the response was YES. [2024-06-21 18:55:24,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11758 conditions, 1208 events. 669/1208 cut-off events. For 422691/422691 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 6464 event pairs, 57 based on Foata normal form. 1/1208 useless extension candidates. Maximal degree in co-relation 11561. Up to 1039 conditions per place. [2024-06-21 18:55:24,619 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 350 selfloop transitions, 49 changer transitions 0/402 dead transitions. [2024-06-21 18:55:24,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 402 transitions, 5139 flow [2024-06-21 18:55:24,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:55:24,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:55:24,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 18:55:24,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-21 18:55:24,620 INFO L175 Difference]: Start difference. First operand has 410 places, 380 transitions, 3837 flow. Second operand 11 states and 142 transitions. [2024-06-21 18:55:24,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 402 transitions, 5139 flow [2024-06-21 18:55:25,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 402 transitions, 5006 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-21 18:55:25,995 INFO L231 Difference]: Finished difference. Result has 412 places, 384 transitions, 3943 flow [2024-06-21 18:55:25,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3704, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3943, PETRI_PLACES=412, PETRI_TRANSITIONS=384} [2024-06-21 18:55:25,995 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 380 predicate places. [2024-06-21 18:55:25,995 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 384 transitions, 3943 flow [2024-06-21 18:55:25,996 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) [2024-06-21 18:55:25,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:55:25,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:55:25,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-21 18:55:25,996 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:55:25,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:55:25,996 INFO L85 PathProgramCache]: Analyzing trace with hash 775948327, now seen corresponding path program 21 times [2024-06-21 18:55:25,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:55:25,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618346341] [2024-06-21 18:55:25,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:55:25,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:55:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:55:27,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:55:27,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:55:27,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618346341] [2024-06-21 18:55:27,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618346341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:55:27,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:55:27,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:55:27,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052018130] [2024-06-21 18:55:27,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:55:27,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:55:27,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:55:27,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:55:27,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:55:27,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:55:27,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 384 transitions, 3943 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) [2024-06-21 18:55:27,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:55:27,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:55:27,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:55:27,605 INFO L124 PetriNetUnfolderBase]: 672/1210 cut-off events. [2024-06-21 18:55:27,606 INFO L125 PetriNetUnfolderBase]: For 427813/427813 co-relation queries the response was YES. [2024-06-21 18:55:27,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11800 conditions, 1210 events. 672/1210 cut-off events. For 427813/427813 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6464 event pairs, 62 based on Foata normal form. 1/1206 useless extension candidates. Maximal degree in co-relation 11602. Up to 1089 conditions per place. [2024-06-21 18:55:27,622 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 367 selfloop transitions, 33 changer transitions 0/403 dead transitions. [2024-06-21 18:55:27,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 403 transitions, 4827 flow [2024-06-21 18:55:27,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:55:27,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:55:27,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 18:55:27,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3746556473829201 [2024-06-21 18:55:27,623 INFO L175 Difference]: Start difference. First operand has 412 places, 384 transitions, 3943 flow. Second operand 11 states and 136 transitions. [2024-06-21 18:55:27,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 403 transitions, 4827 flow [2024-06-21 18:55:29,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 403 transitions, 4703 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-21 18:55:29,085 INFO L231 Difference]: Finished difference. Result has 416 places, 386 transitions, 3934 flow [2024-06-21 18:55:29,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3819, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3934, PETRI_PLACES=416, PETRI_TRANSITIONS=386} [2024-06-21 18:55:29,085 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 384 predicate places. [2024-06-21 18:55:29,086 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 386 transitions, 3934 flow [2024-06-21 18:55:29,086 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) [2024-06-21 18:55:29,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:55:29,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:55:29,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-21 18:55:29,086 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:55:29,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:55:29,087 INFO L85 PathProgramCache]: Analyzing trace with hash 775941600, now seen corresponding path program 19 times [2024-06-21 18:55:29,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:55:29,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580424884] [2024-06-21 18:55:29,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:55:29,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:55:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:55:30,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:55:30,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:55:30,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580424884] [2024-06-21 18:55:30,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580424884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:55:30,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:55:30,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:55:30,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427720375] [2024-06-21 18:55:30,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:55:30,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:55:30,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:55:30,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:55:30,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:55:30,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:55:30,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 386 transitions, 3934 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) [2024-06-21 18:55:30,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:55:30,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:55:30,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:55:30,917 INFO L124 PetriNetUnfolderBase]: 670/1209 cut-off events. [2024-06-21 18:55:30,917 INFO L125 PetriNetUnfolderBase]: For 418827/418827 co-relation queries the response was YES. [2024-06-21 18:55:30,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11615 conditions, 1209 events. 670/1209 cut-off events. For 418827/418827 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6481 event pairs, 59 based on Foata normal form. 1/1208 useless extension candidates. Maximal degree in co-relation 11415. Up to 1048 conditions per place. [2024-06-21 18:55:30,934 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 352 selfloop transitions, 48 changer transitions 0/403 dead transitions. [2024-06-21 18:55:30,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 403 transitions, 4778 flow [2024-06-21 18:55:30,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:55:30,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:55:30,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-21 18:55:30,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856749311294766 [2024-06-21 18:55:30,935 INFO L175 Difference]: Start difference. First operand has 416 places, 386 transitions, 3934 flow. Second operand 11 states and 140 transitions. [2024-06-21 18:55:30,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 403 transitions, 4778 flow [2024-06-21 18:55:32,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 403 transitions, 4643 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-21 18:55:32,417 INFO L231 Difference]: Finished difference. Result has 418 places, 386 transitions, 3900 flow [2024-06-21 18:55:32,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3799, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3900, PETRI_PLACES=418, PETRI_TRANSITIONS=386} [2024-06-21 18:55:32,417 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 386 predicate places. [2024-06-21 18:55:32,417 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 386 transitions, 3900 flow [2024-06-21 18:55:32,417 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) [2024-06-21 18:55:32,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:55:32,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:55:32,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-21 18:55:32,418 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:55:32,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:55:32,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1293386214, now seen corresponding path program 20 times [2024-06-21 18:55:32,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:55:32,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694190158] [2024-06-21 18:55:32,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:55:32,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:55:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:55:33,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:55:33,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:55:33,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694190158] [2024-06-21 18:55:33,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694190158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:55:33,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:55:33,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:55:33,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719691896] [2024-06-21 18:55:33,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:55:33,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:55:33,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:55:33,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:55:33,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:55:33,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:55:33,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 386 transitions, 3900 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) [2024-06-21 18:55:33,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:55:33,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:55:33,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:55:34,337 INFO L124 PetriNetUnfolderBase]: 673/1217 cut-off events. [2024-06-21 18:55:34,337 INFO L125 PetriNetUnfolderBase]: For 424017/424017 co-relation queries the response was YES. [2024-06-21 18:55:34,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11687 conditions, 1217 events. 673/1217 cut-off events. For 424017/424017 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 6525 event pairs, 65 based on Foata normal form. 1/1217 useless extension candidates. Maximal degree in co-relation 11486. Up to 1068 conditions per place. [2024-06-21 18:55:34,351 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 365 selfloop transitions, 37 changer transitions 0/405 dead transitions. [2024-06-21 18:55:34,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 405 transitions, 4820 flow [2024-06-21 18:55:34,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:55:34,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:55:34,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-21 18:55:34,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-21 18:55:34,352 INFO L175 Difference]: Start difference. First operand has 418 places, 386 transitions, 3900 flow. Second operand 11 states and 139 transitions. [2024-06-21 18:55:34,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 405 transitions, 4820 flow [2024-06-21 18:55:36,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 405 transitions, 4719 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 18:55:36,012 INFO L231 Difference]: Finished difference. Result has 419 places, 388 transitions, 3952 flow [2024-06-21 18:55:36,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3799, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3952, PETRI_PLACES=419, PETRI_TRANSITIONS=388} [2024-06-21 18:55:36,012 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 387 predicate places. [2024-06-21 18:55:36,012 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 388 transitions, 3952 flow [2024-06-21 18:55:36,013 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) [2024-06-21 18:55:36,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:55:36,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:55:36,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-21 18:55:36,013 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:55:36,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:55:36,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1179058683, now seen corresponding path program 22 times [2024-06-21 18:55:36,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:55:36,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084522358] [2024-06-21 18:55:36,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:55:36,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:55:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:55:37,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:55:37,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:55:37,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084522358] [2024-06-21 18:55:37,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084522358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:55:37,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:55:37,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:55:37,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115381732] [2024-06-21 18:55:37,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:55:37,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:55:37,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:55:37,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:55:37,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:55:37,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:55:37,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 388 transitions, 3952 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) [2024-06-21 18:55:37,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:55:37,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:55:37,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:55:37,651 INFO L124 PetriNetUnfolderBase]: 676/1219 cut-off events. [2024-06-21 18:55:37,651 INFO L125 PetriNetUnfolderBase]: For 429380/429380 co-relation queries the response was YES. [2024-06-21 18:55:37,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11743 conditions, 1219 events. 676/1219 cut-off events. For 429380/429380 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6544 event pairs, 64 based on Foata normal form. 1/1215 useless extension candidates. Maximal degree in co-relation 11541. Up to 1096 conditions per place. [2024-06-21 18:55:37,668 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 373 selfloop transitions, 30 changer transitions 0/406 dead transitions. [2024-06-21 18:55:37,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 406 transitions, 4844 flow [2024-06-21 18:55:37,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:55:37,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:55:37,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-21 18:55:37,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-21 18:55:37,669 INFO L175 Difference]: Start difference. First operand has 419 places, 388 transitions, 3952 flow. Second operand 10 states and 129 transitions. [2024-06-21 18:55:37,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 406 transitions, 4844 flow [2024-06-21 18:55:39,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 406 transitions, 4713 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-21 18:55:39,391 INFO L231 Difference]: Finished difference. Result has 420 places, 390 transitions, 3934 flow [2024-06-21 18:55:39,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3821, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3934, PETRI_PLACES=420, PETRI_TRANSITIONS=390} [2024-06-21 18:55:39,392 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 388 predicate places. [2024-06-21 18:55:39,392 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 390 transitions, 3934 flow [2024-06-21 18:55:39,392 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) [2024-06-21 18:55:39,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:55:39,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:55:39,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-21 18:55:39,392 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:55:39,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:55:39,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1177904394, now seen corresponding path program 21 times [2024-06-21 18:55:39,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:55:39,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203083637] [2024-06-21 18:55:39,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:55:39,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:55:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:55:40,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:55:40,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:55:40,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203083637] [2024-06-21 18:55:40,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203083637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:55:40,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:55:40,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:55:40,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599637583] [2024-06-21 18:55:40,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:55:40,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:55:40,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:55:40,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:55:40,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:55:40,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:55:40,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 390 transitions, 3934 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) [2024-06-21 18:55:40,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:55:40,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:55:40,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:55:41,412 INFO L124 PetriNetUnfolderBase]: 684/1237 cut-off events. [2024-06-21 18:55:41,413 INFO L125 PetriNetUnfolderBase]: For 449254/449254 co-relation queries the response was YES. [2024-06-21 18:55:41,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12081 conditions, 1237 events. 684/1237 cut-off events. For 449254/449254 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 6680 event pairs, 63 based on Foata normal form. 1/1237 useless extension candidates. Maximal degree in co-relation 11879. Up to 1070 conditions per place. [2024-06-21 18:55:41,430 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 363 selfloop transitions, 45 changer transitions 0/411 dead transitions. [2024-06-21 18:55:41,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 411 transitions, 5278 flow [2024-06-21 18:55:41,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:55:41,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:55:41,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 18:55:41,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-21 18:55:41,431 INFO L175 Difference]: Start difference. First operand has 420 places, 390 transitions, 3934 flow. Second operand 11 states and 142 transitions. [2024-06-21 18:55:41,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 411 transitions, 5278 flow [2024-06-21 18:55:43,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 411 transitions, 5189 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-21 18:55:43,047 INFO L231 Difference]: Finished difference. Result has 423 places, 394 transitions, 4092 flow [2024-06-21 18:55:43,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3845, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4092, PETRI_PLACES=423, PETRI_TRANSITIONS=394} [2024-06-21 18:55:43,047 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 391 predicate places. [2024-06-21 18:55:43,047 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 394 transitions, 4092 flow [2024-06-21 18:55:43,047 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) [2024-06-21 18:55:43,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:55:43,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:55:43,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-21 18:55:43,048 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:55:43,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:55:43,048 INFO L85 PathProgramCache]: Analyzing trace with hash 912854844, now seen corresponding path program 22 times [2024-06-21 18:55:43,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:55:43,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236210760] [2024-06-21 18:55:43,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:55:43,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:55:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:55:44,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:55:44,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:55:44,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236210760] [2024-06-21 18:55:44,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236210760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:55:44,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:55:44,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:55:44,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423962247] [2024-06-21 18:55:44,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:55:44,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:55:44,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:55:44,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:55:44,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:55:44,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:55:44,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 394 transitions, 4092 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) [2024-06-21 18:55:44,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:55:44,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:55:44,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:55:45,443 INFO L124 PetriNetUnfolderBase]: 682/1234 cut-off events. [2024-06-21 18:55:45,443 INFO L125 PetriNetUnfolderBase]: For 440359/440359 co-relation queries the response was YES. [2024-06-21 18:55:45,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11913 conditions, 1234 events. 682/1234 cut-off events. For 440359/440359 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 6669 event pairs, 63 based on Foata normal form. 1/1234 useless extension candidates. Maximal degree in co-relation 11709. Up to 1068 conditions per place. [2024-06-21 18:55:45,460 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 363 selfloop transitions, 44 changer transitions 0/410 dead transitions. [2024-06-21 18:55:45,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 410 transitions, 4948 flow [2024-06-21 18:55:45,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:55:45,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:55:45,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 18:55:45,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-21 18:55:45,461 INFO L175 Difference]: Start difference. First operand has 423 places, 394 transitions, 4092 flow. Second operand 11 states and 142 transitions. [2024-06-21 18:55:45,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 410 transitions, 4948 flow [2024-06-21 18:55:47,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 410 transitions, 4777 flow, removed 61 selfloop flow, removed 7 redundant places. [2024-06-21 18:55:47,225 INFO L231 Difference]: Finished difference. Result has 427 places, 394 transitions, 4014 flow [2024-06-21 18:55:47,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3921, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4014, PETRI_PLACES=427, PETRI_TRANSITIONS=394} [2024-06-21 18:55:47,225 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 395 predicate places. [2024-06-21 18:55:47,225 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 394 transitions, 4014 flow [2024-06-21 18:55:47,226 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) [2024-06-21 18:55:47,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:55:47,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:55:47,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-21 18:55:47,226 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:55:47,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:55:47,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1023348070, now seen corresponding path program 23 times [2024-06-21 18:55:47,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:55:47,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569672125] [2024-06-21 18:55:47,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:55:47,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:55:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:55:48,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:55:48,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:55:48,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569672125] [2024-06-21 18:55:48,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569672125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:55:48,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:55:48,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:55:48,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240671930] [2024-06-21 18:55:48,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:55:48,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:55:48,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:55:48,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:55:48,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:55:48,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:55:48,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 394 transitions, 4014 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) [2024-06-21 18:55:48,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:55:48,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:55:48,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:55:49,167 INFO L124 PetriNetUnfolderBase]: 685/1235 cut-off events. [2024-06-21 18:55:49,167 INFO L125 PetriNetUnfolderBase]: For 445182/445182 co-relation queries the response was YES. [2024-06-21 18:55:49,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11972 conditions, 1235 events. 685/1235 cut-off events. For 445182/445182 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 6684 event pairs, 54 based on Foata normal form. 1/1229 useless extension candidates. Maximal degree in co-relation 11766. Up to 1046 conditions per place. [2024-06-21 18:55:49,185 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 346 selfloop transitions, 62 changer transitions 0/411 dead transitions. [2024-06-21 18:55:49,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 411 transitions, 4946 flow [2024-06-21 18:55:49,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:55:49,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:55:49,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 18:55:49,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-21 18:55:49,186 INFO L175 Difference]: Start difference. First operand has 427 places, 394 transitions, 4014 flow. Second operand 11 states and 141 transitions. [2024-06-21 18:55:49,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 411 transitions, 4946 flow [2024-06-21 18:55:51,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 411 transitions, 4846 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 18:55:51,145 INFO L231 Difference]: Finished difference. Result has 428 places, 396 transitions, 4125 flow [2024-06-21 18:55:51,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3914, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4125, PETRI_PLACES=428, PETRI_TRANSITIONS=396} [2024-06-21 18:55:51,145 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 396 predicate places. [2024-06-21 18:55:51,145 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 396 transitions, 4125 flow [2024-06-21 18:55:51,145 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) [2024-06-21 18:55:51,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:55:51,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:55:51,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-21 18:55:51,146 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:55:51,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:55:51,146 INFO L85 PathProgramCache]: Analyzing trace with hash 2091617731, now seen corresponding path program 23 times [2024-06-21 18:55:51,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:55:51,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569916521] [2024-06-21 18:55:51,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:55:51,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:55:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:55:52,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:55:52,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:55:52,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569916521] [2024-06-21 18:55:52,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569916521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:55:52,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:55:52,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:55:52,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287744770] [2024-06-21 18:55:52,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:55:52,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:55:52,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:55:52,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:55:52,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:55:52,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:55:52,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 396 transitions, 4125 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) [2024-06-21 18:55:52,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:55:52,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:55:52,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:55:52,923 INFO L124 PetriNetUnfolderBase]: 698/1253 cut-off events. [2024-06-21 18:55:52,923 INFO L125 PetriNetUnfolderBase]: For 480210/480210 co-relation queries the response was YES. [2024-06-21 18:55:52,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12579 conditions, 1253 events. 698/1253 cut-off events. For 480210/480210 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 6729 event pairs, 57 based on Foata normal form. 1/1245 useless extension candidates. Maximal degree in co-relation 12372. Up to 1094 conditions per place. [2024-06-21 18:55:52,940 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 367 selfloop transitions, 49 changer transitions 0/419 dead transitions. [2024-06-21 18:55:52,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 419 transitions, 5827 flow [2024-06-21 18:55:52,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:55:52,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:55:52,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 18:55:52,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-21 18:55:52,941 INFO L175 Difference]: Start difference. First operand has 428 places, 396 transitions, 4125 flow. Second operand 11 states and 141 transitions. [2024-06-21 18:55:52,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 419 transitions, 5827 flow [2024-06-21 18:55:54,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 419 transitions, 5638 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-21 18:55:54,874 INFO L231 Difference]: Finished difference. Result has 430 places, 402 transitions, 4187 flow [2024-06-21 18:55:54,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3936, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4187, PETRI_PLACES=430, PETRI_TRANSITIONS=402} [2024-06-21 18:55:54,875 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 398 predicate places. [2024-06-21 18:55:54,875 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 402 transitions, 4187 flow [2024-06-21 18:55:54,875 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) [2024-06-21 18:55:54,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:55:54,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:55:54,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-21 18:55:54,875 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:55:54,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:55:54,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1012455910, now seen corresponding path program 24 times [2024-06-21 18:55:54,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:55:54,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391010556] [2024-06-21 18:55:54,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:55:54,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:55:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:55:56,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:55:56,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:55:56,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391010556] [2024-06-21 18:55:56,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391010556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:55:56,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:55:56,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:55:56,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780696767] [2024-06-21 18:55:56,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:55:56,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:55:56,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:55:56,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:55:56,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:55:56,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:55:56,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 402 transitions, 4187 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) [2024-06-21 18:55:56,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:55:56,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:55:56,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:55:57,138 INFO L124 PetriNetUnfolderBase]: 706/1275 cut-off events. [2024-06-21 18:55:57,138 INFO L125 PetriNetUnfolderBase]: For 501513/501513 co-relation queries the response was YES. [2024-06-21 18:55:57,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12931 conditions, 1275 events. 706/1275 cut-off events. For 501513/501513 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 6912 event pairs, 53 based on Foata normal form. 1/1275 useless extension candidates. Maximal degree in co-relation 12723. Up to 1052 conditions per place. [2024-06-21 18:55:57,156 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 351 selfloop transitions, 68 changer transitions 0/422 dead transitions. [2024-06-21 18:55:57,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 422 transitions, 5573 flow [2024-06-21 18:55:57,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:55:57,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:55:57,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 18:55:57,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-21 18:55:57,157 INFO L175 Difference]: Start difference. First operand has 430 places, 402 transitions, 4187 flow. Second operand 11 states and 143 transitions. [2024-06-21 18:55:57,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 422 transitions, 5573 flow [2024-06-21 18:55:59,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 422 transitions, 5481 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-21 18:55:59,045 INFO L231 Difference]: Finished difference. Result has 435 places, 406 transitions, 4404 flow [2024-06-21 18:55:59,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4095, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4404, PETRI_PLACES=435, PETRI_TRANSITIONS=406} [2024-06-21 18:55:59,046 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 403 predicate places. [2024-06-21 18:55:59,046 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 406 transitions, 4404 flow [2024-06-21 18:55:59,046 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) [2024-06-21 18:55:59,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:55:59,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:55:59,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-21 18:55:59,046 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:55:59,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:55:59,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1012258533, now seen corresponding path program 24 times [2024-06-21 18:55:59,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:55:59,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242126026] [2024-06-21 18:55:59,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:55:59,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:55:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:56:00,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:56:00,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:56:00,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242126026] [2024-06-21 18:56:00,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242126026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:56:00,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:56:00,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:56:00,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564781404] [2024-06-21 18:56:00,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:56:00,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:56:00,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:56:00,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:56:00,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:56:00,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:56:00,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 406 transitions, 4404 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) [2024-06-21 18:56:00,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:56:00,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:56:00,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:56:00,823 INFO L124 PetriNetUnfolderBase]: 704/1264 cut-off events. [2024-06-21 18:56:00,823 INFO L125 PetriNetUnfolderBase]: For 492276/492276 co-relation queries the response was YES. [2024-06-21 18:56:00,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12831 conditions, 1264 events. 704/1264 cut-off events. For 492276/492276 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 6810 event pairs, 57 based on Foata normal form. 1/1255 useless extension candidates. Maximal degree in co-relation 12621. Up to 1105 conditions per place. [2024-06-21 18:56:00,841 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 372 selfloop transitions, 47 changer transitions 0/422 dead transitions. [2024-06-21 18:56:00,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 422 transitions, 5628 flow [2024-06-21 18:56:00,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:56:00,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:56:00,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 18:56:00,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-21 18:56:00,842 INFO L175 Difference]: Start difference. First operand has 435 places, 406 transitions, 4404 flow. Second operand 11 states and 141 transitions. [2024-06-21 18:56:00,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 422 transitions, 5628 flow [2024-06-21 18:56:02,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 422 transitions, 5373 flow, removed 59 selfloop flow, removed 9 redundant places. [2024-06-21 18:56:02,640 INFO L231 Difference]: Finished difference. Result has 437 places, 406 transitions, 4248 flow [2024-06-21 18:56:02,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4149, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4248, PETRI_PLACES=437, PETRI_TRANSITIONS=406} [2024-06-21 18:56:02,640 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 405 predicate places. [2024-06-21 18:56:02,640 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 406 transitions, 4248 flow [2024-06-21 18:56:02,640 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) [2024-06-21 18:56:02,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:56:02,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:56:02,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-21 18:56:02,641 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:56:02,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:56:02,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1012265260, now seen corresponding path program 25 times [2024-06-21 18:56:02,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:56:02,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520574286] [2024-06-21 18:56:02,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:56:02,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:56:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:56:04,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:56:04,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:56:04,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520574286] [2024-06-21 18:56:04,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520574286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:56:04,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:56:04,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:56:04,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975805] [2024-06-21 18:56:04,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:56:04,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:56:04,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:56:04,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:56:04,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:56:04,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:56:04,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 406 transitions, 4248 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) [2024-06-21 18:56:04,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:56:04,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:56:04,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:56:04,667 INFO L124 PetriNetUnfolderBase]: 702/1263 cut-off events. [2024-06-21 18:56:04,667 INFO L125 PetriNetUnfolderBase]: For 481475/481475 co-relation queries the response was YES. [2024-06-21 18:56:04,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12466 conditions, 1263 events. 702/1263 cut-off events. For 481475/481475 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 6827 event pairs, 56 based on Foata normal form. 1/1257 useless extension candidates. Maximal degree in co-relation 12256. Up to 1074 conditions per place. [2024-06-21 18:56:04,686 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 361 selfloop transitions, 57 changer transitions 0/421 dead transitions. [2024-06-21 18:56:04,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 421 transitions, 5122 flow [2024-06-21 18:56:04,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:56:04,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:56:04,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 18:56:04,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-21 18:56:04,686 INFO L175 Difference]: Start difference. First operand has 437 places, 406 transitions, 4248 flow. Second operand 11 states and 141 transitions. [2024-06-21 18:56:04,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 421 transitions, 5122 flow [2024-06-21 18:56:06,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 421 transitions, 4957 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-21 18:56:06,366 INFO L231 Difference]: Finished difference. Result has 438 places, 406 transitions, 4202 flow [2024-06-21 18:56:06,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4083, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4202, PETRI_PLACES=438, PETRI_TRANSITIONS=406} [2024-06-21 18:56:06,366 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 406 predicate places. [2024-06-21 18:56:06,366 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 406 transitions, 4202 flow [2024-06-21 18:56:06,367 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) [2024-06-21 18:56:06,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:56:06,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:56:06,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-21 18:56:06,367 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:56:06,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:56:06,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1005782943, now seen corresponding path program 25 times [2024-06-21 18:56:06,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:56:06,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511427282] [2024-06-21 18:56:06,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:56:06,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:56:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:56:07,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:56:07,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:56:07,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511427282] [2024-06-21 18:56:07,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511427282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:56:07,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:56:07,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:56:07,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000495086] [2024-06-21 18:56:07,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:56:07,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:56:07,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:56:07,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:56:07,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:56:07,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:56:07,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 406 transitions, 4202 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) [2024-06-21 18:56:07,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:56:07,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:56:07,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:56:08,158 INFO L124 PetriNetUnfolderBase]: 700/1258 cut-off events. [2024-06-21 18:56:08,158 INFO L125 PetriNetUnfolderBase]: For 471117/471117 co-relation queries the response was YES. [2024-06-21 18:56:08,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12255 conditions, 1258 events. 700/1258 cut-off events. For 471117/471117 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 6794 event pairs, 57 based on Foata normal form. 1/1249 useless extension candidates. Maximal degree in co-relation 12044. Up to 1100 conditions per place. [2024-06-21 18:56:08,177 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 366 selfloop transitions, 52 changer transitions 0/421 dead transitions. [2024-06-21 18:56:08,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 421 transitions, 5076 flow [2024-06-21 18:56:08,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:56:08,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:56:08,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-21 18:56:08,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38016528925619836 [2024-06-21 18:56:08,178 INFO L175 Difference]: Start difference. First operand has 438 places, 406 transitions, 4202 flow. Second operand 11 states and 138 transitions. [2024-06-21 18:56:08,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 421 transitions, 5076 flow [2024-06-21 18:56:10,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 421 transitions, 4922 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-21 18:56:10,113 INFO L231 Difference]: Finished difference. Result has 439 places, 406 transitions, 4157 flow [2024-06-21 18:56:10,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4048, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4157, PETRI_PLACES=439, PETRI_TRANSITIONS=406} [2024-06-21 18:56:10,113 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 407 predicate places. [2024-06-21 18:56:10,113 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 406 transitions, 4157 flow [2024-06-21 18:56:10,113 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) [2024-06-21 18:56:10,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:56:10,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:56:10,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-21 18:56:10,114 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:56:10,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:56:10,114 INFO L85 PathProgramCache]: Analyzing trace with hash 2006656958, now seen corresponding path program 26 times [2024-06-21 18:56:10,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:56:10,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600978283] [2024-06-21 18:56:10,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:56:10,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:56:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:56:11,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:56:11,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:56:11,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600978283] [2024-06-21 18:56:11,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600978283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:56:11,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:56:11,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:56:11,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197460354] [2024-06-21 18:56:11,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:56:11,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:56:11,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:56:11,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:56:11,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:56:11,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:56:11,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 406 transitions, 4157 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) [2024-06-21 18:56:11,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:56:11,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:56:11,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:56:12,127 INFO L124 PetriNetUnfolderBase]: 703/1272 cut-off events. [2024-06-21 18:56:12,128 INFO L125 PetriNetUnfolderBase]: For 476718/476718 co-relation queries the response was YES. [2024-06-21 18:56:12,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12333 conditions, 1272 events. 703/1272 cut-off events. For 476718/476718 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 6926 event pairs, 52 based on Foata normal form. 1/1272 useless extension candidates. Maximal degree in co-relation 12121. Up to 1118 conditions per place. [2024-06-21 18:56:12,146 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 385 selfloop transitions, 36 changer transitions 0/424 dead transitions. [2024-06-21 18:56:12,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 424 transitions, 5121 flow [2024-06-21 18:56:12,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:56:12,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:56:12,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-21 18:56:12,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-21 18:56:12,147 INFO L175 Difference]: Start difference. First operand has 439 places, 406 transitions, 4157 flow. Second operand 11 states and 139 transitions. [2024-06-21 18:56:12,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 424 transitions, 5121 flow [2024-06-21 18:56:14,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 424 transitions, 5014 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-21 18:56:14,038 INFO L231 Difference]: Finished difference. Result has 440 places, 408 transitions, 4209 flow [2024-06-21 18:56:14,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4050, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4209, PETRI_PLACES=440, PETRI_TRANSITIONS=408} [2024-06-21 18:56:14,038 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 408 predicate places. [2024-06-21 18:56:14,038 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 408 transitions, 4209 flow [2024-06-21 18:56:14,038 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) [2024-06-21 18:56:14,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:56:14,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:56:14,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-21 18:56:14,039 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:56:14,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:56:14,039 INFO L85 PathProgramCache]: Analyzing trace with hash 2010376028, now seen corresponding path program 27 times [2024-06-21 18:56:14,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:56:14,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029490730] [2024-06-21 18:56:14,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:56:14,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:56:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:56:15,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:56:15,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:56:15,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029490730] [2024-06-21 18:56:15,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029490730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:56:15,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:56:15,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:56:15,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548006149] [2024-06-21 18:56:15,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:56:15,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:56:15,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:56:15,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:56:15,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:56:15,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:56:15,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 408 transitions, 4209 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) [2024-06-21 18:56:15,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:56:15,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:56:15,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:56:16,132 INFO L124 PetriNetUnfolderBase]: 711/1289 cut-off events. [2024-06-21 18:56:16,132 INFO L125 PetriNetUnfolderBase]: For 499507/499507 co-relation queries the response was YES. [2024-06-21 18:56:16,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12737 conditions, 1289 events. 711/1289 cut-off events. For 499507/499507 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 7008 event pairs, 52 based on Foata normal form. 1/1289 useless extension candidates. Maximal degree in co-relation 12524. Up to 1115 conditions per place. [2024-06-21 18:56:16,152 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 382 selfloop transitions, 43 changer transitions 0/428 dead transitions. [2024-06-21 18:56:16,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 428 transitions, 5619 flow [2024-06-21 18:56:16,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:56:16,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:56:16,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 18:56:16,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-21 18:56:16,157 INFO L175 Difference]: Start difference. First operand has 440 places, 408 transitions, 4209 flow. Second operand 11 states and 143 transitions. [2024-06-21 18:56:16,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 428 transitions, 5619 flow [2024-06-21 18:56:17,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 428 transitions, 5482 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-21 18:56:17,928 INFO L231 Difference]: Finished difference. Result has 442 places, 412 transitions, 4331 flow [2024-06-21 18:56:17,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4072, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4331, PETRI_PLACES=442, PETRI_TRANSITIONS=412} [2024-06-21 18:56:17,929 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 410 predicate places. [2024-06-21 18:56:17,929 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 412 transitions, 4331 flow [2024-06-21 18:56:17,929 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) [2024-06-21 18:56:17,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:56:17,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:56:17,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-21 18:56:17,929 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:56:17,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:56:17,929 INFO L85 PathProgramCache]: Analyzing trace with hash 2010381825, now seen corresponding path program 26 times [2024-06-21 18:56:17,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:56:17,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496703825] [2024-06-21 18:56:17,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:56:17,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:56:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:56:19,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:56:19,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:56:19,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496703825] [2024-06-21 18:56:19,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496703825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:56:19,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:56:19,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:56:19,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809339277] [2024-06-21 18:56:19,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:56:19,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:56:19,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:56:19,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:56:19,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:56:19,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:56:19,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 412 transitions, 4331 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) [2024-06-21 18:56:19,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:56:19,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:56:19,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:56:19,764 INFO L124 PetriNetUnfolderBase]: 714/1294 cut-off events. [2024-06-21 18:56:19,764 INFO L125 PetriNetUnfolderBase]: For 504945/504945 co-relation queries the response was YES. [2024-06-21 18:56:19,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12782 conditions, 1294 events. 714/1294 cut-off events. For 504945/504945 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 7053 event pairs, 50 based on Foata normal form. 1/1294 useless extension candidates. Maximal degree in co-relation 12568. Up to 1159 conditions per place. [2024-06-21 18:56:19,783 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 396 selfloop transitions, 30 changer transitions 0/429 dead transitions. [2024-06-21 18:56:19,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 429 transitions, 5275 flow [2024-06-21 18:56:19,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:56:19,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:56:19,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 18:56:19,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3746556473829201 [2024-06-21 18:56:19,784 INFO L175 Difference]: Start difference. First operand has 442 places, 412 transitions, 4331 flow. Second operand 11 states and 136 transitions. [2024-06-21 18:56:19,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 429 transitions, 5275 flow [2024-06-21 18:56:21,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 429 transitions, 5141 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-21 18:56:21,896 INFO L231 Difference]: Finished difference. Result has 446 places, 414 transitions, 4318 flow [2024-06-21 18:56:21,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4197, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4318, PETRI_PLACES=446, PETRI_TRANSITIONS=414} [2024-06-21 18:56:21,897 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 414 predicate places. [2024-06-21 18:56:21,897 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 414 transitions, 4318 flow [2024-06-21 18:56:21,897 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) [2024-06-21 18:56:21,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:56:21,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:56:21,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-21 18:56:21,898 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:56:21,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:56:21,898 INFO L85 PathProgramCache]: Analyzing trace with hash 2010381608, now seen corresponding path program 28 times [2024-06-21 18:56:21,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:56:21,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162750319] [2024-06-21 18:56:21,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:56:21,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:56:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:56:23,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:56:23,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:56:23,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162750319] [2024-06-21 18:56:23,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162750319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:56:23,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:56:23,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:56:23,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942177890] [2024-06-21 18:56:23,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:56:23,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:56:23,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:56:23,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:56:23,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:56:23,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:56:23,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 414 transitions, 4318 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) [2024-06-21 18:56:23,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:56:23,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:56:23,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:56:24,096 INFO L124 PetriNetUnfolderBase]: 712/1291 cut-off events. [2024-06-21 18:56:24,096 INFO L125 PetriNetUnfolderBase]: For 493649/493649 co-relation queries the response was YES. [2024-06-21 18:56:24,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12555 conditions, 1291 events. 712/1291 cut-off events. For 493649/493649 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 7067 event pairs, 52 based on Foata normal form. 1/1291 useless extension candidates. Maximal degree in co-relation 12339. Up to 1118 conditions per place. [2024-06-21 18:56:24,111 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 382 selfloop transitions, 44 changer transitions 0/429 dead transitions. [2024-06-21 18:56:24,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 429 transitions, 5210 flow [2024-06-21 18:56:24,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:56:24,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:56:24,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 18:56:24,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-21 18:56:24,112 INFO L175 Difference]: Start difference. First operand has 446 places, 414 transitions, 4318 flow. Second operand 11 states and 141 transitions. [2024-06-21 18:56:24,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 429 transitions, 5210 flow [2024-06-21 18:56:25,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 429 transitions, 5057 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-06-21 18:56:25,831 INFO L231 Difference]: Finished difference. Result has 448 places, 414 transitions, 4258 flow [2024-06-21 18:56:25,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4165, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4258, PETRI_PLACES=448, PETRI_TRANSITIONS=414} [2024-06-21 18:56:25,831 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 416 predicate places. [2024-06-21 18:56:25,831 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 414 transitions, 4258 flow [2024-06-21 18:56:25,831 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) [2024-06-21 18:56:25,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:56:25,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:56:25,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-21 18:56:25,832 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:56:25,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:56:25,832 INFO L85 PathProgramCache]: Analyzing trace with hash -2140694941, now seen corresponding path program 27 times [2024-06-21 18:56:25,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:56:25,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519721992] [2024-06-21 18:56:25,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:56:25,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:56:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:56:27,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:56:27,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:56:27,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519721992] [2024-06-21 18:56:27,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519721992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:56:27,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:56:27,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:56:27,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918605291] [2024-06-21 18:56:27,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:56:27,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:56:27,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:56:27,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:56:27,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:56:27,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:56:27,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 414 transitions, 4258 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) [2024-06-21 18:56:27,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:56:27,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:56:27,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:56:27,676 INFO L124 PetriNetUnfolderBase]: 720/1304 cut-off events. [2024-06-21 18:56:27,676 INFO L125 PetriNetUnfolderBase]: For 515265/515265 co-relation queries the response was YES. [2024-06-21 18:56:27,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12850 conditions, 1304 events. 720/1304 cut-off events. For 515265/515265 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 7132 event pairs, 50 based on Foata normal form. 1/1304 useless extension candidates. Maximal degree in co-relation 12633. Up to 1142 conditions per place. [2024-06-21 18:56:27,695 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 390 selfloop transitions, 40 changer transitions 0/433 dead transitions. [2024-06-21 18:56:27,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 433 transitions, 5628 flow [2024-06-21 18:56:27,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:56:27,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:56:27,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 18:56:27,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-21 18:56:27,697 INFO L175 Difference]: Start difference. First operand has 448 places, 414 transitions, 4258 flow. Second operand 11 states and 142 transitions. [2024-06-21 18:56:27,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 433 transitions, 5628 flow [2024-06-21 18:56:29,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 433 transitions, 5535 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 18:56:29,467 INFO L231 Difference]: Finished difference. Result has 449 places, 418 transitions, 4366 flow [2024-06-21 18:56:29,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4165, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4366, PETRI_PLACES=449, PETRI_TRANSITIONS=418} [2024-06-21 18:56:29,467 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 417 predicate places. [2024-06-21 18:56:29,467 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 418 transitions, 4366 flow [2024-06-21 18:56:29,467 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) [2024-06-21 18:56:29,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:56:29,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:56:29,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-21 18:56:29,467 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:56:29,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:56:29,468 INFO L85 PathProgramCache]: Analyzing trace with hash -2140695158, now seen corresponding path program 29 times [2024-06-21 18:56:29,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:56:29,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152009107] [2024-06-21 18:56:29,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:56:29,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:56:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:56:30,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:56:30,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:56:30,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152009107] [2024-06-21 18:56:30,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152009107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:56:30,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:56:30,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:56:30,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020018516] [2024-06-21 18:56:30,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:56:30,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:56:30,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:56:30,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:56:30,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:56:30,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:56:30,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 418 transitions, 4366 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) [2024-06-21 18:56:30,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:56:30,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:56:30,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:56:31,559 INFO L124 PetriNetUnfolderBase]: 733/1329 cut-off events. [2024-06-21 18:56:31,559 INFO L125 PetriNetUnfolderBase]: For 556209/556209 co-relation queries the response was YES. [2024-06-21 18:56:31,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13609 conditions, 1329 events. 733/1329 cut-off events. For 556209/556209 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 7321 event pairs, 52 based on Foata normal form. 1/1329 useless extension candidates. Maximal degree in co-relation 13391. Up to 1123 conditions per place. [2024-06-21 18:56:31,579 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 383 selfloop transitions, 54 changer transitions 0/440 dead transitions. [2024-06-21 18:56:31,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 440 transitions, 6262 flow [2024-06-21 18:56:31,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:56:31,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:56:31,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 18:56:31,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-21 18:56:31,580 INFO L175 Difference]: Start difference. First operand has 449 places, 418 transitions, 4366 flow. Second operand 11 states and 147 transitions. [2024-06-21 18:56:31,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 440 transitions, 6262 flow [2024-06-21 18:56:33,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 440 transitions, 6163 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-21 18:56:33,476 INFO L231 Difference]: Finished difference. Result has 453 places, 424 transitions, 4642 flow [2024-06-21 18:56:33,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4267, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4642, PETRI_PLACES=453, PETRI_TRANSITIONS=424} [2024-06-21 18:56:33,476 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 421 predicate places. [2024-06-21 18:56:33,477 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 424 transitions, 4642 flow [2024-06-21 18:56:33,477 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) [2024-06-21 18:56:33,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:56:33,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:56:33,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-21 18:56:33,477 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:56:33,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:56:33,477 INFO L85 PathProgramCache]: Analyzing trace with hash -2140700738, now seen corresponding path program 30 times [2024-06-21 18:56:33,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:56:33,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732547223] [2024-06-21 18:56:33,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:56:33,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:56:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:56:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:56:35,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:56:35,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732547223] [2024-06-21 18:56:35,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732547223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:56:35,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:56:35,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:56:35,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432088104] [2024-06-21 18:56:35,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:56:35,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:56:35,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:56:35,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:56:35,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:56:35,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:56:35,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 424 transitions, 4642 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) [2024-06-21 18:56:35,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:56:35,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:56:35,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:56:35,961 INFO L124 PetriNetUnfolderBase]: 731/1326 cut-off events. [2024-06-21 18:56:35,961 INFO L125 PetriNetUnfolderBase]: For 545676/545676 co-relation queries the response was YES. [2024-06-21 18:56:35,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13456 conditions, 1326 events. 731/1326 cut-off events. For 545676/545676 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 7326 event pairs, 52 based on Foata normal form. 1/1326 useless extension candidates. Maximal degree in co-relation 13236. Up to 1121 conditions per place. [2024-06-21 18:56:35,976 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 381 selfloop transitions, 55 changer transitions 0/439 dead transitions. [2024-06-21 18:56:35,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 439 transitions, 5916 flow [2024-06-21 18:56:35,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:56:35,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:56:35,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-21 18:56:35,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-06-21 18:56:35,977 INFO L175 Difference]: Start difference. First operand has 453 places, 424 transitions, 4642 flow. Second operand 11 states and 145 transitions. [2024-06-21 18:56:35,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 439 transitions, 5916 flow [2024-06-21 18:56:37,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 439 transitions, 5664 flow, removed 85 selfloop flow, removed 7 redundant places. [2024-06-21 18:56:37,997 INFO L231 Difference]: Finished difference. Result has 457 places, 424 transitions, 4505 flow [2024-06-21 18:56:37,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4390, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4505, PETRI_PLACES=457, PETRI_TRANSITIONS=424} [2024-06-21 18:56:37,997 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 425 predicate places. [2024-06-21 18:56:37,997 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 424 transitions, 4505 flow [2024-06-21 18:56:37,997 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) [2024-06-21 18:56:37,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:56:37,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:56:37,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-21 18:56:37,998 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:56:37,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:56:37,998 INFO L85 PathProgramCache]: Analyzing trace with hash 373105423, now seen corresponding path program 28 times [2024-06-21 18:56:37,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:56:37,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400443050] [2024-06-21 18:56:37,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:56:37,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:56:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:56:39,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:56:39,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:56:39,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400443050] [2024-06-21 18:56:39,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400443050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:56:39,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:56:39,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:56:39,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523378605] [2024-06-21 18:56:39,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:56:39,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:56:39,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:56:39,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:56:39,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:56:39,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:56:39,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 424 transitions, 4505 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) [2024-06-21 18:56:39,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:56:39,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:56:39,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:56:39,900 INFO L124 PetriNetUnfolderBase]: 734/1331 cut-off events. [2024-06-21 18:56:39,900 INFO L125 PetriNetUnfolderBase]: For 549826/549826 co-relation queries the response was YES. [2024-06-21 18:56:39,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13395 conditions, 1331 events. 734/1331 cut-off events. For 549826/549826 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 7334 event pairs, 50 based on Foata normal form. 1/1331 useless extension candidates. Maximal degree in co-relation 13174. Up to 1164 conditions per place. [2024-06-21 18:56:39,920 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 393 selfloop transitions, 45 changer transitions 0/441 dead transitions. [2024-06-21 18:56:39,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 441 transitions, 5833 flow [2024-06-21 18:56:39,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:56:39,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:56:39,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-21 18:56:39,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856749311294766 [2024-06-21 18:56:39,921 INFO L175 Difference]: Start difference. First operand has 457 places, 424 transitions, 4505 flow. Second operand 11 states and 140 transitions. [2024-06-21 18:56:39,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 441 transitions, 5833 flow [2024-06-21 18:56:41,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 441 transitions, 5725 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-21 18:56:41,825 INFO L231 Difference]: Finished difference. Result has 459 places, 426 transitions, 4540 flow [2024-06-21 18:56:41,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4397, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4540, PETRI_PLACES=459, PETRI_TRANSITIONS=426} [2024-06-21 18:56:41,826 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 427 predicate places. [2024-06-21 18:56:41,826 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 426 transitions, 4540 flow [2024-06-21 18:56:41,826 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) [2024-06-21 18:56:41,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:56:41,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:56:41,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-21 18:56:41,826 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:56:41,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:56:41,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2140493131, now seen corresponding path program 29 times [2024-06-21 18:56:41,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:56:41,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6126954] [2024-06-21 18:56:41,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:56:41,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:56:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:56:43,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:56:43,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:56:43,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6126954] [2024-06-21 18:56:43,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6126954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:56:43,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:56:43,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:56:43,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378594242] [2024-06-21 18:56:43,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:56:43,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:56:43,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:56:43,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:56:43,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:56:43,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:56:43,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 426 transitions, 4540 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) [2024-06-21 18:56:43,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:56:43,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:56:43,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:56:43,666 INFO L124 PetriNetUnfolderBase]: 732/1328 cut-off events. [2024-06-21 18:56:43,667 INFO L125 PetriNetUnfolderBase]: For 538834/538834 co-relation queries the response was YES. [2024-06-21 18:56:43,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13199 conditions, 1328 events. 732/1328 cut-off events. For 538834/538834 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 7304 event pairs, 50 based on Foata normal form. 1/1328 useless extension candidates. Maximal degree in co-relation 12977. Up to 1162 conditions per place. [2024-06-21 18:56:43,687 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 394 selfloop transitions, 43 changer transitions 0/440 dead transitions. [2024-06-21 18:56:43,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 440 transitions, 5450 flow [2024-06-21 18:56:43,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:56:43,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:56:43,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-21 18:56:43,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856749311294766 [2024-06-21 18:56:43,688 INFO L175 Difference]: Start difference. First operand has 459 places, 426 transitions, 4540 flow. Second operand 11 states and 140 transitions. [2024-06-21 18:56:43,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 440 transitions, 5450 flow [2024-06-21 18:56:45,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 440 transitions, 5311 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-21 18:56:45,868 INFO L231 Difference]: Finished difference. Result has 462 places, 426 transitions, 4492 flow [2024-06-21 18:56:45,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4401, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4492, PETRI_PLACES=462, PETRI_TRANSITIONS=426} [2024-06-21 18:56:45,868 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 430 predicate places. [2024-06-21 18:56:45,868 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 426 transitions, 4492 flow [2024-06-21 18:56:45,868 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) [2024-06-21 18:56:45,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:56:45,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:56:45,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-21 18:56:45,869 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:56:45,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:56:45,869 INFO L85 PathProgramCache]: Analyzing trace with hash 957126806, now seen corresponding path program 31 times [2024-06-21 18:56:45,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:56:45,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543076907] [2024-06-21 18:56:45,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:56:45,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:56:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:56:47,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:56:47,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:56:47,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543076907] [2024-06-21 18:56:47,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543076907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:56:47,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:56:47,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:56:47,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847607922] [2024-06-21 18:56:47,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:56:47,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:56:47,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:56:47,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:56:47,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:56:47,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:56:47,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 426 transitions, 4492 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) [2024-06-21 18:56:47,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:56:47,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:56:47,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:56:47,889 INFO L124 PetriNetUnfolderBase]: 730/1325 cut-off events. [2024-06-21 18:56:47,889 INFO L125 PetriNetUnfolderBase]: For 527206/527206 co-relation queries the response was YES. [2024-06-21 18:56:47,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12953 conditions, 1325 events. 730/1325 cut-off events. For 527206/527206 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 7317 event pairs, 52 based on Foata normal form. 1/1325 useless extension candidates. Maximal degree in co-relation 12730. Up to 1121 conditions per place. [2024-06-21 18:56:47,909 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 380 selfloop transitions, 57 changer transitions 0/440 dead transitions. [2024-06-21 18:56:47,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 440 transitions, 5402 flow [2024-06-21 18:56:47,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:56:47,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:56:47,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 18:56:47,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-21 18:56:47,910 INFO L175 Difference]: Start difference. First operand has 462 places, 426 transitions, 4492 flow. Second operand 11 states and 143 transitions. [2024-06-21 18:56:47,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 440 transitions, 5402 flow [2024-06-21 18:56:49,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 440 transitions, 5241 flow, removed 28 selfloop flow, removed 11 redundant places. [2024-06-21 18:56:49,975 INFO L231 Difference]: Finished difference. Result has 462 places, 426 transitions, 4450 flow [2024-06-21 18:56:49,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4331, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4450, PETRI_PLACES=462, PETRI_TRANSITIONS=426} [2024-06-21 18:56:49,975 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 430 predicate places. [2024-06-21 18:56:49,975 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 426 transitions, 4450 flow [2024-06-21 18:56:49,976 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) [2024-06-21 18:56:49,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:56:49,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:56:49,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-21 18:56:49,976 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:56:49,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:56:49,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1088266397, now seen corresponding path program 30 times [2024-06-21 18:56:49,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:56:49,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873022762] [2024-06-21 18:56:49,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:56:49,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:56:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:56:51,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:56:51,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:56:51,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873022762] [2024-06-21 18:56:51,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873022762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:56:51,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:56:51,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:56:51,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821758644] [2024-06-21 18:56:51,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:56:51,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:56:51,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:56:51,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:56:51,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:56:51,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:56:51,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 426 transitions, 4450 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) [2024-06-21 18:56:51,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:56:51,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:56:51,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:56:51,932 INFO L124 PetriNetUnfolderBase]: 738/1338 cut-off events. [2024-06-21 18:56:51,932 INFO L125 PetriNetUnfolderBase]: For 550447/550447 co-relation queries the response was YES. [2024-06-21 18:56:51,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13290 conditions, 1338 events. 738/1338 cut-off events. For 550447/550447 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 7398 event pairs, 54 based on Foata normal form. 1/1338 useless extension candidates. Maximal degree in co-relation 13066. Up to 1071 conditions per place. [2024-06-21 18:56:51,952 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 365 selfloop transitions, 77 changer transitions 0/445 dead transitions. [2024-06-21 18:56:51,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 445 transitions, 6234 flow [2024-06-21 18:56:51,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:56:51,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:56:51,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-21 18:56:51,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-06-21 18:56:51,953 INFO L175 Difference]: Start difference. First operand has 462 places, 426 transitions, 4450 flow. Second operand 11 states and 145 transitions. [2024-06-21 18:56:51,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 445 transitions, 6234 flow [2024-06-21 18:56:54,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 445 transitions, 6104 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-21 18:56:54,018 INFO L231 Difference]: Finished difference. Result has 462 places, 430 transitions, 4599 flow [2024-06-21 18:56:54,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4320, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4599, PETRI_PLACES=462, PETRI_TRANSITIONS=430} [2024-06-21 18:56:54,018 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 430 predicate places. [2024-06-21 18:56:54,018 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 430 transitions, 4599 flow [2024-06-21 18:56:54,019 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) [2024-06-21 18:56:54,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:56:54,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:56:54,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-21 18:56:54,019 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:56:54,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:56:54,020 INFO L85 PathProgramCache]: Analyzing trace with hash 567037393, now seen corresponding path program 31 times [2024-06-21 18:56:54,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:56:54,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619926055] [2024-06-21 18:56:54,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:56:54,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:56:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:56:55,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:56:55,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:56:55,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619926055] [2024-06-21 18:56:55,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619926055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:56:55,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:56:55,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:56:55,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674307590] [2024-06-21 18:56:55,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:56:55,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:56:55,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:56:55,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:56:55,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:56:55,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:56:55,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 430 transitions, 4599 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) [2024-06-21 18:56:55,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:56:55,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:56:55,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:56:56,104 INFO L124 PetriNetUnfolderBase]: 741/1343 cut-off events. [2024-06-21 18:56:56,104 INFO L125 PetriNetUnfolderBase]: For 556827/556827 co-relation queries the response was YES. [2024-06-21 18:56:56,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13425 conditions, 1343 events. 741/1343 cut-off events. For 556827/556827 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 7434 event pairs, 54 based on Foata normal form. 1/1343 useless extension candidates. Maximal degree in co-relation 13200. Up to 1075 conditions per place. [2024-06-21 18:56:56,124 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 366 selfloop transitions, 78 changer transitions 0/447 dead transitions. [2024-06-21 18:56:56,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 447 transitions, 6335 flow [2024-06-21 18:56:56,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:56:56,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:56:56,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 18:56:56,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022038567493113 [2024-06-21 18:56:56,126 INFO L175 Difference]: Start difference. First operand has 462 places, 430 transitions, 4599 flow. Second operand 11 states and 146 transitions. [2024-06-21 18:56:56,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 447 transitions, 6335 flow [2024-06-21 18:56:58,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 447 transitions, 5908 flow, removed 45 selfloop flow, removed 11 redundant places. [2024-06-21 18:56:58,425 INFO L231 Difference]: Finished difference. Result has 462 places, 432 transitions, 4397 flow [2024-06-21 18:56:58,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4190, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4397, PETRI_PLACES=462, PETRI_TRANSITIONS=432} [2024-06-21 18:56:58,425 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 430 predicate places. [2024-06-21 18:56:58,426 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 432 transitions, 4397 flow [2024-06-21 18:56:58,426 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) [2024-06-21 18:56:58,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:56:58,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:56:58,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-21 18:56:58,426 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:56:58,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:56:58,426 INFO L85 PathProgramCache]: Analyzing trace with hash 574454143, now seen corresponding path program 32 times [2024-06-21 18:56:58,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:56:58,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812410712] [2024-06-21 18:56:58,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:56:58,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:56:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:56:59,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:56:59,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:56:59,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812410712] [2024-06-21 18:56:59,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812410712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:56:59,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:56:59,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:56:59,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749361194] [2024-06-21 18:56:59,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:56:59,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:56:59,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:56:59,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:56:59,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:56:59,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:56:59,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 432 transitions, 4397 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) [2024-06-21 18:56:59,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:56:59,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:56:59,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:57:00,328 INFO L124 PetriNetUnfolderBase]: 744/1348 cut-off events. [2024-06-21 18:57:00,328 INFO L125 PetriNetUnfolderBase]: For 561637/561637 co-relation queries the response was YES. [2024-06-21 18:57:00,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13180 conditions, 1348 events. 744/1348 cut-off events. For 561637/561637 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 7457 event pairs, 54 based on Foata normal form. 1/1348 useless extension candidates. Maximal degree in co-relation 12957. Up to 1079 conditions per place. [2024-06-21 18:57:00,348 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 346 selfloop transitions, 99 changer transitions 0/448 dead transitions. [2024-06-21 18:57:00,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 448 transitions, 5747 flow [2024-06-21 18:57:00,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:57:00,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:57:00,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 18:57:00,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-21 18:57:00,349 INFO L175 Difference]: Start difference. First operand has 462 places, 432 transitions, 4397 flow. Second operand 11 states and 141 transitions. [2024-06-21 18:57:00,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 448 transitions, 5747 flow [2024-06-21 18:57:02,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 448 transitions, 5564 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-21 18:57:02,492 INFO L231 Difference]: Finished difference. Result has 465 places, 434 transitions, 4467 flow [2024-06-21 18:57:02,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4218, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4467, PETRI_PLACES=465, PETRI_TRANSITIONS=434} [2024-06-21 18:57:02,492 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 433 predicate places. [2024-06-21 18:57:02,492 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 434 transitions, 4467 flow [2024-06-21 18:57:02,492 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) [2024-06-21 18:57:02,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:57:02,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:57:02,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-21 18:57:02,492 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:57:02,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:57:02,493 INFO L85 PathProgramCache]: Analyzing trace with hash 574187233, now seen corresponding path program 33 times [2024-06-21 18:57:02,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:57:02,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907667485] [2024-06-21 18:57:02,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:57:02,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:57:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:57:03,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:57:03,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:57:03,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907667485] [2024-06-21 18:57:03,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907667485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:57:03,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:57:03,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:57:03,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573823087] [2024-06-21 18:57:03,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:57:03,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:57:03,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:57:03,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:57:03,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:57:03,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:57:03,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 434 transitions, 4467 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) [2024-06-21 18:57:03,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:57:03,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:57:03,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:57:04,536 INFO L124 PetriNetUnfolderBase]: 747/1353 cut-off events. [2024-06-21 18:57:04,537 INFO L125 PetriNetUnfolderBase]: For 567612/567612 co-relation queries the response was YES. [2024-06-21 18:57:04,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13278 conditions, 1353 events. 747/1353 cut-off events. For 567612/567612 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 7481 event pairs, 54 based on Foata normal form. 1/1353 useless extension candidates. Maximal degree in co-relation 13054. Up to 1083 conditions per place. [2024-06-21 18:57:04,556 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 358 selfloop transitions, 90 changer transitions 0/451 dead transitions. [2024-06-21 18:57:04,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 451 transitions, 6205 flow [2024-06-21 18:57:04,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:57:04,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:57:04,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 18:57:04,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-21 18:57:04,557 INFO L175 Difference]: Start difference. First operand has 465 places, 434 transitions, 4467 flow. Second operand 11 states and 143 transitions. [2024-06-21 18:57:04,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 451 transitions, 6205 flow [2024-06-21 18:57:06,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 451 transitions, 5779 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-21 18:57:06,627 INFO L231 Difference]: Finished difference. Result has 466 places, 436 transitions, 4276 flow [2024-06-21 18:57:06,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4047, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4276, PETRI_PLACES=466, PETRI_TRANSITIONS=436} [2024-06-21 18:57:06,628 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 434 predicate places. [2024-06-21 18:57:06,628 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 436 transitions, 4276 flow [2024-06-21 18:57:06,628 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) [2024-06-21 18:57:06,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:57:06,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:57:06,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-21 18:57:06,628 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:57:06,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:57:06,628 INFO L85 PathProgramCache]: Analyzing trace with hash 567037176, now seen corresponding path program 32 times [2024-06-21 18:57:06,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:57:06,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833741519] [2024-06-21 18:57:06,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:57:06,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:57:06,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:57:07,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:57:07,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:57:07,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833741519] [2024-06-21 18:57:07,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833741519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:57:07,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:57:07,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:57:07,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132853011] [2024-06-21 18:57:07,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:57:07,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:57:07,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:57:07,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:57:07,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:57:08,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:57:08,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 436 transitions, 4276 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) [2024-06-21 18:57:08,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:57:08,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:57:08,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:57:08,678 INFO L124 PetriNetUnfolderBase]: 755/1368 cut-off events. [2024-06-21 18:57:08,678 INFO L125 PetriNetUnfolderBase]: For 592676/592676 co-relation queries the response was YES. [2024-06-21 18:57:08,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13598 conditions, 1368 events. 755/1368 cut-off events. For 592676/592676 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 7604 event pairs, 58 based on Foata normal form. 1/1368 useless extension candidates. Maximal degree in co-relation 13373. Up to 1044 conditions per place. [2024-06-21 18:57:08,698 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 353 selfloop transitions, 99 changer transitions 0/455 dead transitions. [2024-06-21 18:57:08,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 455 transitions, 6148 flow [2024-06-21 18:57:08,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:57:08,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:57:08,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 18:57:08,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-21 18:57:08,699 INFO L175 Difference]: Start difference. First operand has 466 places, 436 transitions, 4276 flow. Second operand 11 states and 147 transitions. [2024-06-21 18:57:08,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 455 transitions, 6148 flow [2024-06-21 18:57:11,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 455 transitions, 5929 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-21 18:57:11,404 INFO L231 Difference]: Finished difference. Result has 468 places, 440 transitions, 4432 flow [2024-06-21 18:57:11,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4057, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4432, PETRI_PLACES=468, PETRI_TRANSITIONS=440} [2024-06-21 18:57:11,404 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 436 predicate places. [2024-06-21 18:57:11,404 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 440 transitions, 4432 flow [2024-06-21 18:57:11,404 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) [2024-06-21 18:57:11,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:57:11,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:57:11,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-21 18:57:11,406 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:57:11,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:57:11,406 INFO L85 PathProgramCache]: Analyzing trace with hash 566829786, now seen corresponding path program 33 times [2024-06-21 18:57:11,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:57:11,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371134405] [2024-06-21 18:57:11,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:57:11,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:57:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:57:13,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:57:13,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:57:13,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371134405] [2024-06-21 18:57:13,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371134405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:57:13,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:57:13,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:57:13,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113429657] [2024-06-21 18:57:13,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:57:13,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:57:13,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:57:13,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:57:13,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:57:13,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:57:13,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 440 transitions, 4432 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) [2024-06-21 18:57:13,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:57:13,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:57:13,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:57:13,678 INFO L124 PetriNetUnfolderBase]: 758/1375 cut-off events. [2024-06-21 18:57:13,678 INFO L125 PetriNetUnfolderBase]: For 600017/600017 co-relation queries the response was YES. [2024-06-21 18:57:13,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13714 conditions, 1375 events. 758/1375 cut-off events. For 600017/600017 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 7631 event pairs, 58 based on Foata normal form. 1/1375 useless extension candidates. Maximal degree in co-relation 13488. Up to 1048 conditions per place. [2024-06-21 18:57:13,698 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 349 selfloop transitions, 104 changer transitions 0/456 dead transitions. [2024-06-21 18:57:13,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 456 transitions, 5844 flow [2024-06-21 18:57:13,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:57:13,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:57:13,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 18:57:13,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-21 18:57:13,699 INFO L175 Difference]: Start difference. First operand has 468 places, 440 transitions, 4432 flow. Second operand 11 states and 144 transitions. [2024-06-21 18:57:13,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 456 transitions, 5844 flow [2024-06-21 18:57:16,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 456 transitions, 5293 flow, removed 59 selfloop flow, removed 11 redundant places. [2024-06-21 18:57:16,134 INFO L231 Difference]: Finished difference. Result has 468 places, 442 transitions, 4184 flow [2024-06-21 18:57:16,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3899, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4184, PETRI_PLACES=468, PETRI_TRANSITIONS=442} [2024-06-21 18:57:16,134 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 436 predicate places. [2024-06-21 18:57:16,135 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 442 transitions, 4184 flow [2024-06-21 18:57:16,135 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) [2024-06-21 18:57:16,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:57:16,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:57:16,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-21 18:57:16,135 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:57:16,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:57:16,136 INFO L85 PathProgramCache]: Analyzing trace with hash 566835583, now seen corresponding path program 34 times [2024-06-21 18:57:16,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:57:16,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358551318] [2024-06-21 18:57:16,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:57:16,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:57:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:57:17,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:57:17,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:57:17,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358551318] [2024-06-21 18:57:17,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358551318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:57:17,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:57:17,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:57:17,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810953732] [2024-06-21 18:57:17,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:57:17,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:57:17,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:57:17,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:57:17,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:57:17,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:57:17,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 442 transitions, 4184 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) [2024-06-21 18:57:17,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:57:17,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:57:17,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:57:18,257 INFO L124 PetriNetUnfolderBase]: 756/1372 cut-off events. [2024-06-21 18:57:18,257 INFO L125 PetriNetUnfolderBase]: For 585826/585826 co-relation queries the response was YES. [2024-06-21 18:57:18,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13104 conditions, 1372 events. 756/1372 cut-off events. For 585826/585826 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 7646 event pairs, 45 based on Foata normal form. 1/1372 useless extension candidates. Maximal degree in co-relation 12880. Up to 1099 conditions per place. [2024-06-21 18:57:18,278 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 368 selfloop transitions, 85 changer transitions 0/456 dead transitions. [2024-06-21 18:57:18,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 456 transitions, 5508 flow [2024-06-21 18:57:18,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:57:18,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:57:18,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 18:57:18,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-21 18:57:18,279 INFO L175 Difference]: Start difference. First operand has 468 places, 442 transitions, 4184 flow. Second operand 11 states and 143 transitions. [2024-06-21 18:57:18,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 456 transitions, 5508 flow [2024-06-21 18:57:20,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 456 transitions, 5213 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-21 18:57:20,304 INFO L231 Difference]: Finished difference. Result has 471 places, 442 transitions, 4064 flow [2024-06-21 18:57:20,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3889, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4064, PETRI_PLACES=471, PETRI_TRANSITIONS=442} [2024-06-21 18:57:20,304 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 439 predicate places. [2024-06-21 18:57:20,304 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 442 transitions, 4064 flow [2024-06-21 18:57:20,305 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) [2024-06-21 18:57:20,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:57:20,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:57:20,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-21 18:57:20,305 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:57:20,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:57:20,306 INFO L85 PathProgramCache]: Analyzing trace with hash 574187016, now seen corresponding path program 34 times [2024-06-21 18:57:20,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:57:20,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914013630] [2024-06-21 18:57:20,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:57:20,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:57:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:57:21,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:57:21,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:57:21,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914013630] [2024-06-21 18:57:21,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914013630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:57:21,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:57:21,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:57:21,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89249577] [2024-06-21 18:57:21,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:57:21,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:57:21,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:57:21,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:57:21,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:57:21,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:57:21,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 442 transitions, 4064 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) [2024-06-21 18:57:21,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:57:21,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:57:21,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:57:22,379 INFO L124 PetriNetUnfolderBase]: 754/1369 cut-off events. [2024-06-21 18:57:22,379 INFO L125 PetriNetUnfolderBase]: For 572525/572525 co-relation queries the response was YES. [2024-06-21 18:57:22,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12774 conditions, 1369 events. 754/1369 cut-off events. For 572525/572525 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 7610 event pairs, 49 based on Foata normal form. 1/1369 useless extension candidates. Maximal degree in co-relation 12549. Up to 1043 conditions per place. [2024-06-21 18:57:22,400 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 336 selfloop transitions, 117 changer transitions 0/456 dead transitions. [2024-06-21 18:57:22,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 456 transitions, 5390 flow [2024-06-21 18:57:22,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:57:22,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:57:22,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 18:57:22,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-21 18:57:22,401 INFO L175 Difference]: Start difference. First operand has 471 places, 442 transitions, 4064 flow. Second operand 11 states and 143 transitions. [2024-06-21 18:57:22,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 456 transitions, 5390 flow [2024-06-21 18:57:24,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 456 transitions, 5148 flow, removed 29 selfloop flow, removed 11 redundant places. [2024-06-21 18:57:24,592 INFO L231 Difference]: Finished difference. Result has 471 places, 442 transitions, 4061 flow [2024-06-21 18:57:24,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3822, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4061, PETRI_PLACES=471, PETRI_TRANSITIONS=442} [2024-06-21 18:57:24,592 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 439 predicate places. [2024-06-21 18:57:24,592 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 442 transitions, 4061 flow [2024-06-21 18:57:24,592 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) [2024-06-21 18:57:24,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:57:24,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:57:24,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-21 18:57:24,592 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:57:24,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:57:24,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1088475864, now seen corresponding path program 35 times [2024-06-21 18:57:24,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:57:24,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378296084] [2024-06-21 18:57:24,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:57:24,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:57:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:57:25,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:57:25,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:57:25,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378296084] [2024-06-21 18:57:25,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378296084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:57:25,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:57:25,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:57:25,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590023647] [2024-06-21 18:57:25,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:57:25,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:57:25,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:57:25,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:57:25,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:57:26,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:57:26,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 442 transitions, 4061 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) [2024-06-21 18:57:26,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:57:26,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:57:26,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:57:26,603 INFO L124 PetriNetUnfolderBase]: 752/1366 cut-off events. [2024-06-21 18:57:26,603 INFO L125 PetriNetUnfolderBase]: For 559352/559352 co-relation queries the response was YES. [2024-06-21 18:57:26,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12574 conditions, 1366 events. 752/1366 cut-off events. For 559352/559352 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 7602 event pairs, 49 based on Foata normal form. 1/1366 useless extension candidates. Maximal degree in co-relation 12348. Up to 1041 conditions per place. [2024-06-21 18:57:26,624 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 350 selfloop transitions, 102 changer transitions 0/455 dead transitions. [2024-06-21 18:57:26,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 455 transitions, 4997 flow [2024-06-21 18:57:26,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:57:26,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:57:26,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 18:57:26,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-21 18:57:26,625 INFO L175 Difference]: Start difference. First operand has 471 places, 442 transitions, 4061 flow. Second operand 11 states and 144 transitions. [2024-06-21 18:57:26,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 455 transitions, 4997 flow [2024-06-21 18:57:28,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 455 transitions, 4560 flow, removed 30 selfloop flow, removed 11 redundant places. [2024-06-21 18:57:28,357 INFO L231 Difference]: Finished difference. Result has 471 places, 442 transitions, 3833 flow [2024-06-21 18:57:28,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3624, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3833, PETRI_PLACES=471, PETRI_TRANSITIONS=442} [2024-06-21 18:57:28,358 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 439 predicate places. [2024-06-21 18:57:28,358 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 442 transitions, 3833 flow [2024-06-21 18:57:28,358 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) [2024-06-21 18:57:28,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:57:28,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:57:28,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-21 18:57:28,358 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:57:28,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:57:28,358 INFO L85 PathProgramCache]: Analyzing trace with hash 574194673, now seen corresponding path program 35 times [2024-06-21 18:57:28,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:57:28,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217286833] [2024-06-21 18:57:28,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:57:28,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:57:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:57:29,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:57:29,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:57:29,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217286833] [2024-06-21 18:57:29,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217286833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:57:29,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:57:29,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:57:29,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514218650] [2024-06-21 18:57:29,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:57:29,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:57:29,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:57:29,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:57:29,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:57:29,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:57:29,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 442 transitions, 3833 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) [2024-06-21 18:57:29,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:57:29,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:57:29,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:57:30,342 INFO L124 PetriNetUnfolderBase]: 750/1363 cut-off events. [2024-06-21 18:57:30,342 INFO L125 PetriNetUnfolderBase]: For 545079/545079 co-relation queries the response was YES. [2024-06-21 18:57:30,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12227 conditions, 1363 events. 750/1363 cut-off events. For 545079/545079 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 7595 event pairs, 54 based on Foata normal form. 1/1363 useless extension candidates. Maximal degree in co-relation 12000. Up to 1091 conditions per place. [2024-06-21 18:57:30,362 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 363 selfloop transitions, 89 changer transitions 0/455 dead transitions. [2024-06-21 18:57:30,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 455 transitions, 4769 flow [2024-06-21 18:57:30,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:57:30,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:57:30,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 18:57:30,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-21 18:57:30,363 INFO L175 Difference]: Start difference. First operand has 471 places, 442 transitions, 3833 flow. Second operand 11 states and 142 transitions. [2024-06-21 18:57:30,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 455 transitions, 4769 flow [2024-06-21 18:57:33,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 455 transitions, 4514 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-21 18:57:33,017 INFO L231 Difference]: Finished difference. Result has 471 places, 442 transitions, 3761 flow [2024-06-21 18:57:33,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3578, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3761, PETRI_PLACES=471, PETRI_TRANSITIONS=442} [2024-06-21 18:57:33,018 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 439 predicate places. [2024-06-21 18:57:33,018 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 442 transitions, 3761 flow [2024-06-21 18:57:33,018 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) [2024-06-21 18:57:33,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:57:33,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:57:33,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-21 18:57:33,018 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:57:33,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:57:33,018 INFO L85 PathProgramCache]: Analyzing trace with hash 753871119, now seen corresponding path program 1 times [2024-06-21 18:57:33,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:57:33,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783213611] [2024-06-21 18:57:33,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:57:33,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:57:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:57:34,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:57:34,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:57:34,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783213611] [2024-06-21 18:57:34,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783213611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:57:34,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:57:34,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:57:34,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571545487] [2024-06-21 18:57:34,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:57:34,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:57:34,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:57:34,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:57:34,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:57:34,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:57:34,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 442 transitions, 3761 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:57:34,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:57:34,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:57:34,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:57:35,173 INFO L124 PetriNetUnfolderBase]: 716/1333 cut-off events. [2024-06-21 18:57:35,173 INFO L125 PetriNetUnfolderBase]: For 570514/570514 co-relation queries the response was YES. [2024-06-21 18:57:35,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12046 conditions, 1333 events. 716/1333 cut-off events. For 570514/570514 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 7603 event pairs, 64 based on Foata normal form. 2/1334 useless extension candidates. Maximal degree in co-relation 11818. Up to 1020 conditions per place. [2024-06-21 18:57:35,193 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 348 selfloop transitions, 35 changer transitions 0/457 dead transitions. [2024-06-21 18:57:35,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 457 transitions, 4607 flow [2024-06-21 18:57:35,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:57:35,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:57:35,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 18:57:35,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022038567493113 [2024-06-21 18:57:35,194 INFO L175 Difference]: Start difference. First operand has 471 places, 442 transitions, 3761 flow. Second operand 11 states and 146 transitions. [2024-06-21 18:57:35,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 457 transitions, 4607 flow [2024-06-21 18:57:38,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 457 transitions, 4374 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-21 18:57:38,328 INFO L231 Difference]: Finished difference. Result has 471 places, 443 transitions, 3646 flow [2024-06-21 18:57:38,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3528, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3646, PETRI_PLACES=471, PETRI_TRANSITIONS=443} [2024-06-21 18:57:38,329 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 439 predicate places. [2024-06-21 18:57:38,329 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 443 transitions, 3646 flow [2024-06-21 18:57:38,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:57:38,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:57:38,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:57:38,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-21 18:57:38,330 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:57:38,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:57:38,330 INFO L85 PathProgramCache]: Analyzing trace with hash -591620487, now seen corresponding path program 2 times [2024-06-21 18:57:38,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:57:38,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004487282] [2024-06-21 18:57:38,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:57:38,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:57:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:57:39,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:57:39,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:57:39,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004487282] [2024-06-21 18:57:39,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004487282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:57:39,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:57:39,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:57:39,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60355539] [2024-06-21 18:57:39,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:57:39,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:57:39,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:57:39,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:57:39,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:57:39,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:57:39,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 443 transitions, 3646 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:57:39,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:57:39,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:57:39,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:57:40,308 INFO L124 PetriNetUnfolderBase]: 725/1352 cut-off events. [2024-06-21 18:57:40,308 INFO L125 PetriNetUnfolderBase]: For 577279/577279 co-relation queries the response was YES. [2024-06-21 18:57:40,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12077 conditions, 1352 events. 725/1352 cut-off events. For 577279/577279 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 7776 event pairs, 62 based on Foata normal form. 2/1353 useless extension candidates. Maximal degree in co-relation 11848. Up to 1030 conditions per place. [2024-06-21 18:57:40,328 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 353 selfloop transitions, 34 changer transitions 0/461 dead transitions. [2024-06-21 18:57:40,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 461 transitions, 4512 flow [2024-06-21 18:57:40,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:57:40,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:57:40,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 18:57:40,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-21 18:57:40,329 INFO L175 Difference]: Start difference. First operand has 471 places, 443 transitions, 3646 flow. Second operand 11 states and 147 transitions. [2024-06-21 18:57:40,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 461 transitions, 4512 flow [2024-06-21 18:57:43,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 461 transitions, 4404 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-21 18:57:43,162 INFO L231 Difference]: Finished difference. Result has 474 places, 445 transitions, 3664 flow [2024-06-21 18:57:43,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3538, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3664, PETRI_PLACES=474, PETRI_TRANSITIONS=445} [2024-06-21 18:57:43,162 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 442 predicate places. [2024-06-21 18:57:43,162 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 445 transitions, 3664 flow [2024-06-21 18:57:43,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:57:43,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:57:43,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:57:43,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-21 18:57:43,163 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:57:43,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:57:43,163 INFO L85 PathProgramCache]: Analyzing trace with hash -473472357, now seen corresponding path program 3 times [2024-06-21 18:57:43,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:57:43,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619893133] [2024-06-21 18:57:43,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:57:43,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:57:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:57:45,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:57:45,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:57:45,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619893133] [2024-06-21 18:57:45,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619893133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:57:45,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:57:45,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:57:45,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223530548] [2024-06-21 18:57:45,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:57:45,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:57:45,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:57:45,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:57:45,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:57:45,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:57:45,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 445 transitions, 3664 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:57:45,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:57:45,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:57:45,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:57:45,772 INFO L124 PetriNetUnfolderBase]: 726/1357 cut-off events. [2024-06-21 18:57:45,772 INFO L125 PetriNetUnfolderBase]: For 584142/584142 co-relation queries the response was YES. [2024-06-21 18:57:45,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12163 conditions, 1357 events. 726/1357 cut-off events. For 584142/584142 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 7848 event pairs, 54 based on Foata normal form. 2/1358 useless extension candidates. Maximal degree in co-relation 11932. Up to 1036 conditions per place. [2024-06-21 18:57:45,793 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 347 selfloop transitions, 38 changer transitions 0/459 dead transitions. [2024-06-21 18:57:45,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 459 transitions, 4514 flow [2024-06-21 18:57:45,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:57:45,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:57:45,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 18:57:45,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-21 18:57:45,794 INFO L175 Difference]: Start difference. First operand has 474 places, 445 transitions, 3664 flow. Second operand 11 states and 147 transitions. [2024-06-21 18:57:45,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 459 transitions, 4514 flow [2024-06-21 18:57:48,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 459 transitions, 4408 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-21 18:57:48,212 INFO L231 Difference]: Finished difference. Result has 477 places, 446 transitions, 3686 flow [2024-06-21 18:57:48,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3558, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3686, PETRI_PLACES=477, PETRI_TRANSITIONS=446} [2024-06-21 18:57:48,212 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 445 predicate places. [2024-06-21 18:57:48,212 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 446 transitions, 3686 flow [2024-06-21 18:57:48,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:57:48,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:57:48,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:57:48,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-21 18:57:48,213 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:57:48,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:57:48,214 INFO L85 PathProgramCache]: Analyzing trace with hash -588758567, now seen corresponding path program 1 times [2024-06-21 18:57:48,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:57:48,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192350714] [2024-06-21 18:57:48,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:57:48,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:57:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:57:49,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:57:49,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:57:49,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192350714] [2024-06-21 18:57:49,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192350714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:57:49,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:57:49,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:57:49,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040224562] [2024-06-21 18:57:49,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:57:49,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:57:49,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:57:49,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:57:49,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:57:49,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:57:49,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 446 transitions, 3686 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) [2024-06-21 18:57:49,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:57:49,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:57:49,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:57:50,320 INFO L124 PetriNetUnfolderBase]: 770/1403 cut-off events. [2024-06-21 18:57:50,320 INFO L125 PetriNetUnfolderBase]: For 568883/568883 co-relation queries the response was YES. [2024-06-21 18:57:50,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12410 conditions, 1403 events. 770/1403 cut-off events. For 568883/568883 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 7930 event pairs, 56 based on Foata normal form. 1/1403 useless extension candidates. Maximal degree in co-relation 12178. Up to 1234 conditions per place. [2024-06-21 18:57:50,342 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 421 selfloop transitions, 38 changer transitions 0/462 dead transitions. [2024-06-21 18:57:50,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 462 transitions, 4688 flow [2024-06-21 18:57:50,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:57:50,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:57:50,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-21 18:57:50,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-21 18:57:50,343 INFO L175 Difference]: Start difference. First operand has 477 places, 446 transitions, 3686 flow. Second operand 11 states and 139 transitions. [2024-06-21 18:57:50,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 462 transitions, 4688 flow [2024-06-21 18:57:52,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 462 transitions, 4570 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-21 18:57:52,839 INFO L231 Difference]: Finished difference. Result has 479 places, 448 transitions, 3699 flow [2024-06-21 18:57:52,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3568, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3699, PETRI_PLACES=479, PETRI_TRANSITIONS=448} [2024-06-21 18:57:52,840 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 447 predicate places. [2024-06-21 18:57:52,840 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 448 transitions, 3699 flow [2024-06-21 18:57:52,840 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) [2024-06-21 18:57:52,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:57:52,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:57:52,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-21 18:57:52,840 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:57:52,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:57:52,840 INFO L85 PathProgramCache]: Analyzing trace with hash 758344729, now seen corresponding path program 2 times [2024-06-21 18:57:52,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:57:52,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132202229] [2024-06-21 18:57:52,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:57:52,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:57:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:57:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:57:54,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:57:54,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132202229] [2024-06-21 18:57:54,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132202229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:57:54,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:57:54,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:57:54,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663667801] [2024-06-21 18:57:54,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:57:54,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:57:54,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:57:54,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:57:54,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:57:55,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:57:55,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 448 transitions, 3699 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) [2024-06-21 18:57:55,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:57:55,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:57:55,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:57:55,867 INFO L124 PetriNetUnfolderBase]: 778/1418 cut-off events. [2024-06-21 18:57:55,867 INFO L125 PetriNetUnfolderBase]: For 588256/588256 co-relation queries the response was YES. [2024-06-21 18:57:55,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12723 conditions, 1418 events. 778/1418 cut-off events. For 588256/588256 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 8024 event pairs, 56 based on Foata normal form. 1/1418 useless extension candidates. Maximal degree in co-relation 12490. Up to 1220 conditions per place. [2024-06-21 18:57:55,889 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 415 selfloop transitions, 48 changer transitions 0/466 dead transitions. [2024-06-21 18:57:55,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 466 transitions, 5161 flow [2024-06-21 18:57:55,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:57:55,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:57:55,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-21 18:57:55,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-21 18:57:55,890 INFO L175 Difference]: Start difference. First operand has 479 places, 448 transitions, 3699 flow. Second operand 12 states and 152 transitions. [2024-06-21 18:57:55,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 466 transitions, 5161 flow [2024-06-21 18:57:58,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 466 transitions, 5046 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-21 18:57:58,908 INFO L231 Difference]: Finished difference. Result has 482 places, 452 transitions, 3789 flow [2024-06-21 18:57:58,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3584, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3789, PETRI_PLACES=482, PETRI_TRANSITIONS=452} [2024-06-21 18:57:58,908 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 450 predicate places. [2024-06-21 18:57:58,909 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 452 transitions, 3789 flow [2024-06-21 18:57:58,909 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) [2024-06-21 18:57:58,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:57:58,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:57:58,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-21 18:57:58,909 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:57:58,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:57:58,909 INFO L85 PathProgramCache]: Analyzing trace with hash -473294417, now seen corresponding path program 3 times [2024-06-21 18:57:58,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:57:58,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170382284] [2024-06-21 18:57:58,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:57:58,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:57:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:58:00,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:58:00,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:58:00,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170382284] [2024-06-21 18:58:00,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170382284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:58:00,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:58:00,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:58:00,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133814155] [2024-06-21 18:58:00,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:58:00,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:58:00,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:58:00,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:58:00,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:58:00,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:58:00,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 452 transitions, 3789 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) [2024-06-21 18:58:00,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:58:00,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:58:00,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:58:01,600 INFO L124 PetriNetUnfolderBase]: 781/1425 cut-off events. [2024-06-21 18:58:01,600 INFO L125 PetriNetUnfolderBase]: For 597878/597878 co-relation queries the response was YES. [2024-06-21 18:58:01,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12824 conditions, 1425 events. 781/1425 cut-off events. For 597878/597878 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 8095 event pairs, 56 based on Foata normal form. 1/1425 useless extension candidates. Maximal degree in co-relation 12590. Up to 1224 conditions per place. [2024-06-21 18:58:01,617 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 414 selfloop transitions, 51 changer transitions 0/468 dead transitions. [2024-06-21 18:58:01,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 468 transitions, 5211 flow [2024-06-21 18:58:01,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:58:01,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:58:01,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-21 18:58:01,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813131313131313 [2024-06-21 18:58:01,618 INFO L175 Difference]: Start difference. First operand has 482 places, 452 transitions, 3789 flow. Second operand 12 states and 151 transitions. [2024-06-21 18:58:01,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 468 transitions, 5211 flow [2024-06-21 18:58:03,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 468 transitions, 5100 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-21 18:58:03,911 INFO L231 Difference]: Finished difference. Result has 486 places, 454 transitions, 3839 flow [2024-06-21 18:58:03,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3684, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3839, PETRI_PLACES=486, PETRI_TRANSITIONS=454} [2024-06-21 18:58:03,911 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 454 predicate places. [2024-06-21 18:58:03,911 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 454 transitions, 3839 flow [2024-06-21 18:58:03,911 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) [2024-06-21 18:58:03,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:58:03,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:58:03,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-21 18:58:03,912 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:58:03,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:58:03,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1299543851, now seen corresponding path program 1 times [2024-06-21 18:58:03,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:58:03,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410274089] [2024-06-21 18:58:03,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:58:03,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:58:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:58:05,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:58:05,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:58:05,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410274089] [2024-06-21 18:58:05,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410274089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:58:05,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:58:05,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:58:05,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688108927] [2024-06-21 18:58:05,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:58:05,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:58:05,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:58:05,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:58:05,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:58:05,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:58:05,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 454 transitions, 3839 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:58:05,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:58:05,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:58:05,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:58:05,849 INFO L124 PetriNetUnfolderBase]: 784/1424 cut-off events. [2024-06-21 18:58:05,850 INFO L125 PetriNetUnfolderBase]: For 606588/606588 co-relation queries the response was YES. [2024-06-21 18:58:05,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12915 conditions, 1424 events. 784/1424 cut-off events. For 606588/606588 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 8088 event pairs, 63 based on Foata normal form. 1/1418 useless extension candidates. Maximal degree in co-relation 12679. Up to 1247 conditions per place. [2024-06-21 18:58:05,872 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 418 selfloop transitions, 51 changer transitions 0/472 dead transitions. [2024-06-21 18:58:05,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 472 transitions, 4851 flow [2024-06-21 18:58:05,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:58:05,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:58:05,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-21 18:58:05,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-21 18:58:05,874 INFO L175 Difference]: Start difference. First operand has 486 places, 454 transitions, 3839 flow. Second operand 10 states and 138 transitions. [2024-06-21 18:58:05,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 472 transitions, 4851 flow [2024-06-21 18:58:07,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 472 transitions, 4708 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-21 18:58:07,382 INFO L231 Difference]: Finished difference. Result has 486 places, 456 transitions, 3844 flow [2024-06-21 18:58:07,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3696, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3844, PETRI_PLACES=486, PETRI_TRANSITIONS=456} [2024-06-21 18:58:07,382 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 454 predicate places. [2024-06-21 18:58:07,382 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 456 transitions, 3844 flow [2024-06-21 18:58:07,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:58:07,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:58:07,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:58:07,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-21 18:58:07,382 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:58:07,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:58:07,383 INFO L85 PathProgramCache]: Analyzing trace with hash 758524219, now seen corresponding path program 4 times [2024-06-21 18:58:07,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:58:07,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833723156] [2024-06-21 18:58:07,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:58:07,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:58:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:58:08,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:58:08,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:58:08,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833723156] [2024-06-21 18:58:08,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833723156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:58:08,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:58:08,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:58:08,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861462359] [2024-06-21 18:58:08,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:58:08,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:58:08,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:58:08,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:58:08,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:58:09,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:58:09,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 456 transitions, 3844 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) [2024-06-21 18:58:09,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:58:09,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:58:09,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:58:09,675 INFO L124 PetriNetUnfolderBase]: 782/1427 cut-off events. [2024-06-21 18:58:09,676 INFO L125 PetriNetUnfolderBase]: For 590939/590939 co-relation queries the response was YES. [2024-06-21 18:58:09,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12714 conditions, 1427 events. 782/1427 cut-off events. For 590939/590939 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 8123 event pairs, 55 based on Foata normal form. 1/1427 useless extension candidates. Maximal degree in co-relation 12478. Up to 1227 conditions per place. [2024-06-21 18:58:09,698 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 413 selfloop transitions, 53 changer transitions 0/469 dead transitions. [2024-06-21 18:58:09,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 469 transitions, 4810 flow [2024-06-21 18:58:09,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:58:09,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:58:09,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 18:58:09,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-21 18:58:09,699 INFO L175 Difference]: Start difference. First operand has 486 places, 456 transitions, 3844 flow. Second operand 11 states and 142 transitions. [2024-06-21 18:58:09,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 469 transitions, 4810 flow [2024-06-21 18:58:11,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 469 transitions, 4646 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-21 18:58:11,473 INFO L231 Difference]: Finished difference. Result has 489 places, 456 transitions, 3791 flow [2024-06-21 18:58:11,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3680, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3791, PETRI_PLACES=489, PETRI_TRANSITIONS=456} [2024-06-21 18:58:11,473 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 457 predicate places. [2024-06-21 18:58:11,473 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 456 transitions, 3791 flow [2024-06-21 18:58:11,473 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) [2024-06-21 18:58:11,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:58:11,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:58:11,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-21 18:58:11,473 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:58:11,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:58:11,474 INFO L85 PathProgramCache]: Analyzing trace with hash 923978903, now seen corresponding path program 4 times [2024-06-21 18:58:11,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:58:11,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138261301] [2024-06-21 18:58:11,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:58:11,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:58:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:58:13,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:58:13,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:58:13,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138261301] [2024-06-21 18:58:13,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138261301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:58:13,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:58:13,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 18:58:13,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166935280] [2024-06-21 18:58:13,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:58:13,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 18:58:13,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:58:13,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 18:58:13,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 18:58:13,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:58:13,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 456 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) [2024-06-21 18:58:13,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:58:13,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:58:13,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:58:13,940 INFO L124 PetriNetUnfolderBase]: 746/1395 cut-off events. [2024-06-21 18:58:13,940 INFO L125 PetriNetUnfolderBase]: For 621686/621686 co-relation queries the response was YES. [2024-06-21 18:58:13,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12547 conditions, 1395 events. 746/1395 cut-off events. For 621686/621686 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 8121 event pairs, 49 based on Foata normal form. 2/1396 useless extension candidates. Maximal degree in co-relation 12309. Up to 1066 conditions per place. [2024-06-21 18:58:13,962 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 354 selfloop transitions, 41 changer transitions 0/469 dead transitions. [2024-06-21 18:58:13,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 469 transitions, 4659 flow [2024-06-21 18:58:13,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:58:13,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:58:13,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-21 18:58:13,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40771349862258954 [2024-06-21 18:58:13,964 INFO L175 Difference]: Start difference. First operand has 489 places, 456 transitions, 3791 flow. Second operand 11 states and 148 transitions. [2024-06-21 18:58:13,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 469 transitions, 4659 flow [2024-06-21 18:58:16,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 469 transitions, 4548 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 18:58:16,432 INFO L231 Difference]: Finished difference. Result has 490 places, 457 transitions, 3816 flow [2024-06-21 18:58:16,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3680, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3816, PETRI_PLACES=490, PETRI_TRANSITIONS=457} [2024-06-21 18:58:16,432 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 458 predicate places. [2024-06-21 18:58:16,432 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 457 transitions, 3816 flow [2024-06-21 18:58:16,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:58:16,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:58:16,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:58:16,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-21 18:58:16,432 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:58:16,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:58:16,433 INFO L85 PathProgramCache]: Analyzing trace with hash -301153095, now seen corresponding path program 1 times [2024-06-21 18:58:16,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:58:16,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006040639] [2024-06-21 18:58:16,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:58:16,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:58:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:58:17,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:58:17,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:58:17,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006040639] [2024-06-21 18:58:17,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006040639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:58:17,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:58:17,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:58:17,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855807436] [2024-06-21 18:58:17,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:58:17,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:58:17,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:58:17,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:58:17,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:58:18,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:58:18,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 457 transitions, 3816 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:58:18,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:58:18,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:58:18,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:58:18,588 INFO L124 PetriNetUnfolderBase]: 789/1440 cut-off events. [2024-06-21 18:58:18,588 INFO L125 PetriNetUnfolderBase]: For 604582/604582 co-relation queries the response was YES. [2024-06-21 18:58:18,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12845 conditions, 1440 events. 789/1440 cut-off events. For 604582/604582 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 8232 event pairs, 70 based on Foata normal form. 1/1440 useless extension candidates. Maximal degree in co-relation 12606. Up to 1286 conditions per place. [2024-06-21 18:58:18,611 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 432 selfloop transitions, 38 changer transitions 0/473 dead transitions. [2024-06-21 18:58:18,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 473 transitions, 4826 flow [2024-06-21 18:58:18,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:58:18,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:58:18,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-21 18:58:18,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 18:58:18,611 INFO L175 Difference]: Start difference. First operand has 490 places, 457 transitions, 3816 flow. Second operand 10 states and 135 transitions. [2024-06-21 18:58:18,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 473 transitions, 4826 flow [2024-06-21 18:58:20,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 473 transitions, 4700 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-21 18:58:20,248 INFO L231 Difference]: Finished difference. Result has 491 places, 459 transitions, 3811 flow [2024-06-21 18:58:20,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3690, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3811, PETRI_PLACES=491, PETRI_TRANSITIONS=459} [2024-06-21 18:58:20,249 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 459 predicate places. [2024-06-21 18:58:20,249 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 459 transitions, 3811 flow [2024-06-21 18:58:20,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:58:20,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:58:20,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:58:20,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-21 18:58:20,249 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:58:20,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:58:20,250 INFO L85 PathProgramCache]: Analyzing trace with hash -307648525, now seen corresponding path program 2 times [2024-06-21 18:58:20,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:58:20,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755976954] [2024-06-21 18:58:20,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:58:20,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:58:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:58:21,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:58:21,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:58:21,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755976954] [2024-06-21 18:58:21,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755976954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:58:21,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:58:21,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:58:21,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575540259] [2024-06-21 18:58:21,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:58:21,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:58:21,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:58:21,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:58:21,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:58:21,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:58:21,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 459 transitions, 3811 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:58:21,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:58:21,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:58:21,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:58:22,296 INFO L124 PetriNetUnfolderBase]: 797/1442 cut-off events. [2024-06-21 18:58:22,296 INFO L125 PetriNetUnfolderBase]: For 629679/629679 co-relation queries the response was YES. [2024-06-21 18:58:22,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13115 conditions, 1442 events. 797/1442 cut-off events. For 629679/629679 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 8160 event pairs, 53 based on Foata normal form. 1/1433 useless extension candidates. Maximal degree in co-relation 12876. Up to 1159 conditions per place. [2024-06-21 18:58:22,318 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 398 selfloop transitions, 77 changer transitions 0/478 dead transitions. [2024-06-21 18:58:22,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 478 transitions, 5285 flow [2024-06-21 18:58:22,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:58:22,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:58:22,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-21 18:58:22,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-06-21 18:58:22,319 INFO L175 Difference]: Start difference. First operand has 491 places, 459 transitions, 3811 flow. Second operand 10 states and 144 transitions. [2024-06-21 18:58:22,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 478 transitions, 5285 flow [2024-06-21 18:58:24,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 478 transitions, 5180 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-21 18:58:24,423 INFO L231 Difference]: Finished difference. Result has 493 places, 463 transitions, 3947 flow [2024-06-21 18:58:24,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3706, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3947, PETRI_PLACES=493, PETRI_TRANSITIONS=463} [2024-06-21 18:58:24,423 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 461 predicate places. [2024-06-21 18:58:24,423 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 463 transitions, 3947 flow [2024-06-21 18:58:24,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:58:24,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:58:24,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:58:24,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-21 18:58:24,424 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:58:24,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:58:24,424 INFO L85 PathProgramCache]: Analyzing trace with hash -307828263, now seen corresponding path program 5 times [2024-06-21 18:58:24,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:58:24,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982993760] [2024-06-21 18:58:24,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:58:24,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:58:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:58:26,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:58:26,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:58:26,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982993760] [2024-06-21 18:58:26,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982993760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:58:26,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:58:26,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:58:26,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926422] [2024-06-21 18:58:26,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:58:26,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:58:26,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:58:26,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:58:26,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:58:26,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:58:26,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 463 transitions, 3947 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) [2024-06-21 18:58:26,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:58:26,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:58:26,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:58:27,126 INFO L124 PetriNetUnfolderBase]: 805/1468 cut-off events. [2024-06-21 18:58:27,126 INFO L125 PetriNetUnfolderBase]: For 659052/659052 co-relation queries the response was YES. [2024-06-21 18:58:27,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13595 conditions, 1468 events. 805/1468 cut-off events. For 659052/659052 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 8416 event pairs, 54 based on Foata normal form. 1/1468 useless extension candidates. Maximal degree in co-relation 13355. Up to 1230 conditions per place. [2024-06-21 18:58:27,149 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 416 selfloop transitions, 61 changer transitions 0/480 dead transitions. [2024-06-21 18:58:27,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 480 transitions, 5455 flow [2024-06-21 18:58:27,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:58:27,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:58:27,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-21 18:58:27,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40771349862258954 [2024-06-21 18:58:27,150 INFO L175 Difference]: Start difference. First operand has 493 places, 463 transitions, 3947 flow. Second operand 11 states and 148 transitions. [2024-06-21 18:58:27,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 480 transitions, 5455 flow [2024-06-21 18:58:29,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 480 transitions, 5341 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-21 18:58:29,127 INFO L231 Difference]: Finished difference. Result has 498 places, 467 transitions, 4072 flow [2024-06-21 18:58:29,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3833, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4072, PETRI_PLACES=498, PETRI_TRANSITIONS=467} [2024-06-21 18:58:29,128 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 466 predicate places. [2024-06-21 18:58:29,128 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 467 transitions, 4072 flow [2024-06-21 18:58:29,128 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) [2024-06-21 18:58:29,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:58:29,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:58:29,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-21 18:58:29,128 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:58:29,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:58:29,129 INFO L85 PathProgramCache]: Analyzing trace with hash -307648773, now seen corresponding path program 6 times [2024-06-21 18:58:29,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:58:29,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791774800] [2024-06-21 18:58:29,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:58:29,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:58:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:58:30,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:58:30,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:58:30,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791774800] [2024-06-21 18:58:30,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791774800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:58:30,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:58:30,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:58:30,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627481521] [2024-06-21 18:58:30,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:58:30,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:58:30,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:58:30,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:58:30,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:58:31,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:58:31,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 467 transitions, 4072 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) [2024-06-21 18:58:31,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:58:31,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:58:31,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:58:31,722 INFO L124 PetriNetUnfolderBase]: 813/1483 cut-off events. [2024-06-21 18:58:31,722 INFO L125 PetriNetUnfolderBase]: For 687921/687921 co-relation queries the response was YES. [2024-06-21 18:58:31,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14070 conditions, 1483 events. 813/1483 cut-off events. For 687921/687921 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 8526 event pairs, 54 based on Foata normal form. 1/1483 useless extension candidates. Maximal degree in co-relation 13827. Up to 1222 conditions per place. [2024-06-21 18:58:31,746 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 413 selfloop transitions, 69 changer transitions 0/485 dead transitions. [2024-06-21 18:58:31,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 485 transitions, 6018 flow [2024-06-21 18:58:31,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:58:31,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:58:31,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-21 18:58:31,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39646464646464646 [2024-06-21 18:58:31,747 INFO L175 Difference]: Start difference. First operand has 498 places, 467 transitions, 4072 flow. Second operand 12 states and 157 transitions. [2024-06-21 18:58:31,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 485 transitions, 6018 flow [2024-06-21 18:58:33,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 485 transitions, 5870 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-21 18:58:33,802 INFO L231 Difference]: Finished difference. Result has 503 places, 471 transitions, 4183 flow [2024-06-21 18:58:33,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3944, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4183, PETRI_PLACES=503, PETRI_TRANSITIONS=471} [2024-06-21 18:58:33,802 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 471 predicate places. [2024-06-21 18:58:33,802 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 471 transitions, 4183 flow [2024-06-21 18:58:33,802 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) [2024-06-21 18:58:33,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:58:33,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:58:33,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-21 18:58:33,802 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:58:33,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:58:33,803 INFO L85 PathProgramCache]: Analyzing trace with hash 924156843, now seen corresponding path program 7 times [2024-06-21 18:58:33,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:58:33,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51006633] [2024-06-21 18:58:33,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:58:33,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:58:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:58:35,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:58:35,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:58:35,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51006633] [2024-06-21 18:58:35,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51006633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:58:35,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:58:35,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:58:35,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788330595] [2024-06-21 18:58:35,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:58:35,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:58:35,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:58:35,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:58:35,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:58:35,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:58:35,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 471 transitions, 4183 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) [2024-06-21 18:58:35,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:58:35,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:58:35,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:58:36,147 INFO L124 PetriNetUnfolderBase]: 811/1480 cut-off events. [2024-06-21 18:58:36,147 INFO L125 PetriNetUnfolderBase]: For 672530/672530 co-relation queries the response was YES. [2024-06-21 18:58:36,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13893 conditions, 1480 events. 811/1480 cut-off events. For 672530/672530 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 8492 event pairs, 52 based on Foata normal form. 1/1480 useless extension candidates. Maximal degree in co-relation 13648. Up to 1258 conditions per place. [2024-06-21 18:58:36,172 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 422 selfloop transitions, 58 changer transitions 0/483 dead transitions. [2024-06-21 18:58:36,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 483 transitions, 5173 flow [2024-06-21 18:58:36,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:58:36,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:58:36,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 18:58:36,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-21 18:58:36,185 INFO L175 Difference]: Start difference. First operand has 503 places, 471 transitions, 4183 flow. Second operand 11 states and 147 transitions. [2024-06-21 18:58:36,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 483 transitions, 5173 flow [2024-06-21 18:58:38,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 483 transitions, 4978 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-21 18:58:38,654 INFO L231 Difference]: Finished difference. Result has 506 places, 471 transitions, 4109 flow [2024-06-21 18:58:38,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3988, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4109, PETRI_PLACES=506, PETRI_TRANSITIONS=471} [2024-06-21 18:58:38,655 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 474 predicate places. [2024-06-21 18:58:38,655 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 471 transitions, 4109 flow [2024-06-21 18:58:38,655 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) [2024-06-21 18:58:38,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:58:38,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:58:38,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-21 18:58:38,655 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:58:38,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:58:38,656 INFO L85 PathProgramCache]: Analyzing trace with hash 930650103, now seen corresponding path program 8 times [2024-06-21 18:58:38,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:58:38,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084029584] [2024-06-21 18:58:38,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:58:38,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:58:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:58:40,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:58:40,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:58:40,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084029584] [2024-06-21 18:58:40,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084029584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:58:40,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:58:40,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:58:40,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802657479] [2024-06-21 18:58:40,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:58:40,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:58:40,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:58:40,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:58:40,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:58:40,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:58:40,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 471 transitions, 4109 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) [2024-06-21 18:58:40,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:58:40,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:58:40,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:58:40,862 INFO L124 PetriNetUnfolderBase]: 814/1485 cut-off events. [2024-06-21 18:58:40,862 INFO L125 PetriNetUnfolderBase]: For 678413/678413 co-relation queries the response was YES. [2024-06-21 18:58:40,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13892 conditions, 1485 events. 814/1485 cut-off events. For 678413/678413 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 8534 event pairs, 54 based on Foata normal form. 1/1485 useless extension candidates. Maximal degree in co-relation 13646. Up to 1224 conditions per place. [2024-06-21 18:58:40,886 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 403 selfloop transitions, 80 changer transitions 0/486 dead transitions. [2024-06-21 18:58:40,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 486 transitions, 5577 flow [2024-06-21 18:58:40,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:58:40,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:58:40,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-21 18:58:40,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-21 18:58:40,887 INFO L175 Difference]: Start difference. First operand has 506 places, 471 transitions, 4109 flow. Second operand 12 states and 153 transitions. [2024-06-21 18:58:40,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 486 transitions, 5577 flow [2024-06-21 18:58:42,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 486 transitions, 5455 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-21 18:58:42,971 INFO L231 Difference]: Finished difference. Result has 508 places, 473 transitions, 4202 flow [2024-06-21 18:58:42,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3987, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4202, PETRI_PLACES=508, PETRI_TRANSITIONS=473} [2024-06-21 18:58:42,971 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 476 predicate places. [2024-06-21 18:58:42,971 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 473 transitions, 4202 flow [2024-06-21 18:58:42,971 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) [2024-06-21 18:58:42,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:58:42,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:58:42,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-21 18:58:42,971 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:58:42,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:58:42,972 INFO L85 PathProgramCache]: Analyzing trace with hash -301153405, now seen corresponding path program 3 times [2024-06-21 18:58:42,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:58:42,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496431548] [2024-06-21 18:58:42,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:58:42,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:58:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:58:44,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:58:44,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:58:44,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496431548] [2024-06-21 18:58:44,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496431548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:58:44,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:58:44,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:58:44,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647319070] [2024-06-21 18:58:44,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:58:44,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:58:44,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:58:44,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:58:44,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:58:44,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:58:44,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 473 transitions, 4202 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:58:44,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:58:44,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:58:44,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:58:44,914 INFO L124 PetriNetUnfolderBase]: 817/1483 cut-off events. [2024-06-21 18:58:44,914 INFO L125 PetriNetUnfolderBase]: For 685229/685229 co-relation queries the response was YES. [2024-06-21 18:58:44,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14006 conditions, 1483 events. 817/1483 cut-off events. For 685229/685229 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 8493 event pairs, 53 based on Foata normal form. 1/1474 useless extension candidates. Maximal degree in co-relation 13759. Up to 1191 conditions per place. [2024-06-21 18:58:44,939 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 387 selfloop transitions, 100 changer transitions 0/490 dead transitions. [2024-06-21 18:58:44,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 490 transitions, 5672 flow [2024-06-21 18:58:44,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:58:44,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:58:44,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-21 18:58:44,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-06-21 18:58:44,940 INFO L175 Difference]: Start difference. First operand has 508 places, 473 transitions, 4202 flow. Second operand 10 states and 141 transitions. [2024-06-21 18:58:44,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 490 transitions, 5672 flow [2024-06-21 18:58:46,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 490 transitions, 5504 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-21 18:58:46,805 INFO L231 Difference]: Finished difference. Result has 509 places, 475 transitions, 4277 flow [2024-06-21 18:58:46,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4034, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4277, PETRI_PLACES=509, PETRI_TRANSITIONS=475} [2024-06-21 18:58:46,806 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 477 predicate places. [2024-06-21 18:58:46,806 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 475 transitions, 4277 flow [2024-06-21 18:58:46,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:58:46,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:58:46,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:58:46,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-21 18:58:46,806 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:58:46,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:58:46,807 INFO L85 PathProgramCache]: Analyzing trace with hash 930650351, now seen corresponding path program 4 times [2024-06-21 18:58:46,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:58:46,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376691141] [2024-06-21 18:58:46,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:58:46,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:58:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:58:48,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:58:48,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:58:48,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376691141] [2024-06-21 18:58:48,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376691141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:58:48,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:58:48,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:58:48,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749250573] [2024-06-21 18:58:48,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:58:48,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:58:48,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:58:48,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:58:48,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:58:48,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:58:48,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 475 transitions, 4277 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:58:48,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:58:48,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:58:48,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:58:48,849 INFO L124 PetriNetUnfolderBase]: 820/1488 cut-off events. [2024-06-21 18:58:48,849 INFO L125 PetriNetUnfolderBase]: For 691341/691341 co-relation queries the response was YES. [2024-06-21 18:58:48,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14114 conditions, 1488 events. 820/1488 cut-off events. For 691341/691341 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 8515 event pairs, 53 based on Foata normal form. 1/1479 useless extension candidates. Maximal degree in co-relation 13867. Up to 1195 conditions per place. [2024-06-21 18:58:48,873 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 397 selfloop transitions, 92 changer transitions 0/492 dead transitions. [2024-06-21 18:58:48,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 492 transitions, 5757 flow [2024-06-21 18:58:48,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:58:48,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:58:48,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-06-21 18:58:48,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303030303030303 [2024-06-21 18:58:48,874 INFO L175 Difference]: Start difference. First operand has 509 places, 475 transitions, 4277 flow. Second operand 10 states and 142 transitions. [2024-06-21 18:58:48,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 492 transitions, 5757 flow [2024-06-21 18:58:50,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 492 transitions, 5540 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-21 18:58:50,915 INFO L231 Difference]: Finished difference. Result has 512 places, 477 transitions, 4293 flow [2024-06-21 18:58:50,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4068, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4293, PETRI_PLACES=512, PETRI_TRANSITIONS=477} [2024-06-21 18:58:50,916 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 480 predicate places. [2024-06-21 18:58:50,916 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 477 transitions, 4293 flow [2024-06-21 18:58:50,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:58:50,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:58:50,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:58:50,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-21 18:58:50,917 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:58:50,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:58:50,917 INFO L85 PathProgramCache]: Analyzing trace with hash 930419711, now seen corresponding path program 5 times [2024-06-21 18:58:50,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:58:50,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452408229] [2024-06-21 18:58:50,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:58:50,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:58:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:58:52,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:58:52,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:58:52,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452408229] [2024-06-21 18:58:52,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452408229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:58:52,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:58:52,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:58:52,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27254282] [2024-06-21 18:58:52,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:58:52,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:58:52,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:58:52,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:58:52,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:58:52,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:58:52,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 477 transitions, 4293 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:58:52,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:58:52,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:58:52,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:58:52,933 INFO L124 PetriNetUnfolderBase]: 818/1483 cut-off events. [2024-06-21 18:58:52,933 INFO L125 PetriNetUnfolderBase]: For 675046/675046 co-relation queries the response was YES. [2024-06-21 18:58:52,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13881 conditions, 1483 events. 818/1483 cut-off events. For 675046/675046 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 8500 event pairs, 53 based on Foata normal form. 1/1474 useless extension candidates. Maximal degree in co-relation 13633. Up to 1193 conditions per place. [2024-06-21 18:58:52,956 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 403 selfloop transitions, 85 changer transitions 0/491 dead transitions. [2024-06-21 18:58:52,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 491 transitions, 5303 flow [2024-06-21 18:58:52,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:58:52,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:58:52,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-06-21 18:58:52,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303030303030303 [2024-06-21 18:58:52,957 INFO L175 Difference]: Start difference. First operand has 512 places, 477 transitions, 4293 flow. Second operand 10 states and 142 transitions. [2024-06-21 18:58:52,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 491 transitions, 5303 flow [2024-06-21 18:58:54,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 491 transitions, 5110 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-21 18:58:54,961 INFO L231 Difference]: Finished difference. Result has 515 places, 477 transitions, 4277 flow [2024-06-21 18:58:54,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4100, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4277, PETRI_PLACES=515, PETRI_TRANSITIONS=477} [2024-06-21 18:58:54,962 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 483 predicate places. [2024-06-21 18:58:54,962 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 477 transitions, 4277 flow [2024-06-21 18:58:54,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:58:54,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:58:54,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:58:54,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-21 18:58:54,962 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:58:54,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:58:54,963 INFO L85 PathProgramCache]: Analyzing trace with hash 930412953, now seen corresponding path program 9 times [2024-06-21 18:58:54,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:58:54,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814326672] [2024-06-21 18:58:54,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:58:54,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:58:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:58:56,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:58:56,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:58:56,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814326672] [2024-06-21 18:58:56,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814326672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:58:56,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:58:56,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:58:56,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724260446] [2024-06-21 18:58:56,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:58:56,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:58:56,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:58:56,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:58:56,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:58:56,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:58:56,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 477 transitions, 4277 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) [2024-06-21 18:58:56,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:58:56,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:58:56,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:58:57,406 INFO L124 PetriNetUnfolderBase]: 821/1499 cut-off events. [2024-06-21 18:58:57,406 INFO L125 PetriNetUnfolderBase]: For 681553/681553 co-relation queries the response was YES. [2024-06-21 18:58:57,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13948 conditions, 1499 events. 821/1499 cut-off events. For 681553/681553 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 8699 event pairs, 54 based on Foata normal form. 1/1499 useless extension candidates. Maximal degree in co-relation 13699. Up to 1271 conditions per place. [2024-06-21 18:58:57,430 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 427 selfloop transitions, 62 changer transitions 0/492 dead transitions. [2024-06-21 18:58:57,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 492 transitions, 5765 flow [2024-06-21 18:58:57,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:58:57,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:58:57,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 18:58:57,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-21 18:58:57,431 INFO L175 Difference]: Start difference. First operand has 515 places, 477 transitions, 4277 flow. Second operand 11 states and 147 transitions. [2024-06-21 18:58:57,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 492 transitions, 5765 flow [2024-06-21 18:58:59,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 492 transitions, 5509 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-21 18:58:59,545 INFO L231 Difference]: Finished difference. Result has 515 places, 479 transitions, 4200 flow [2024-06-21 18:58:59,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4021, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4200, PETRI_PLACES=515, PETRI_TRANSITIONS=479} [2024-06-21 18:58:59,545 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 483 predicate places. [2024-06-21 18:58:59,545 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 479 transitions, 4200 flow [2024-06-21 18:58:59,545 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) [2024-06-21 18:58:59,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:58:59,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:58:59,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-21 18:58:59,545 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:58:59,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:58:59,546 INFO L85 PathProgramCache]: Analyzing trace with hash 930419463, now seen corresponding path program 10 times [2024-06-21 18:58:59,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:58:59,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679021948] [2024-06-21 18:58:59,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:58:59,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:58:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:59:01,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:59:01,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:59:01,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679021948] [2024-06-21 18:59:01,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679021948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:59:01,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:59:01,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:59:01,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875238079] [2024-06-21 18:59:01,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:59:01,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:59:01,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:59:01,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:59:01,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:59:01,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:59:01,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 479 transitions, 4200 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) [2024-06-21 18:59:01,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:59:01,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:59:01,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:59:01,853 INFO L124 PetriNetUnfolderBase]: 819/1496 cut-off events. [2024-06-21 18:59:01,854 INFO L125 PetriNetUnfolderBase]: For 662704/662704 co-relation queries the response was YES. [2024-06-21 18:59:01,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13616 conditions, 1496 events. 819/1496 cut-off events. For 662704/662704 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 8656 event pairs, 54 based on Foata normal form. 1/1496 useless extension candidates. Maximal degree in co-relation 13365. Up to 1233 conditions per place. [2024-06-21 18:59:01,877 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 413 selfloop transitions, 75 changer transitions 0/491 dead transitions. [2024-06-21 18:59:01,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 491 transitions, 5206 flow [2024-06-21 18:59:01,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:59:01,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:59:01,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-21 18:59:01,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-21 18:59:01,878 INFO L175 Difference]: Start difference. First operand has 515 places, 479 transitions, 4200 flow. Second operand 12 states and 154 transitions. [2024-06-21 18:59:01,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 491 transitions, 5206 flow [2024-06-21 18:59:04,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 491 transitions, 4983 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-06-21 18:59:04,106 INFO L231 Difference]: Finished difference. Result has 517 places, 479 transitions, 4132 flow [2024-06-21 18:59:04,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3977, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4132, PETRI_PLACES=517, PETRI_TRANSITIONS=479} [2024-06-21 18:59:04,107 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 485 predicate places. [2024-06-21 18:59:04,107 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 479 transitions, 4132 flow [2024-06-21 18:59:04,107 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) [2024-06-21 18:59:04,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:59:04,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:59:04,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-21 18:59:04,107 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:59:04,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:59:04,107 INFO L85 PathProgramCache]: Analyzing trace with hash -816961351, now seen corresponding path program 5 times [2024-06-21 18:59:04,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:59:04,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457117559] [2024-06-21 18:59:04,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:59:04,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:59:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:59:05,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:59:05,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:59:05,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457117559] [2024-06-21 18:59:05,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457117559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:59:05,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:59:05,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:59:05,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345819753] [2024-06-21 18:59:05,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:59:05,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:59:05,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:59:05,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:59:05,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:59:05,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:59:05,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 479 transitions, 4132 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:59:05,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:59:05,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:59:05,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:59:06,588 INFO L124 PetriNetUnfolderBase]: 777/1456 cut-off events. [2024-06-21 18:59:06,589 INFO L125 PetriNetUnfolderBase]: For 696986/696986 co-relation queries the response was YES. [2024-06-21 18:59:06,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13441 conditions, 1456 events. 777/1456 cut-off events. For 696986/696986 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 8690 event pairs, 49 based on Foata normal form. 2/1454 useless extension candidates. Maximal degree in co-relation 13189. Up to 1106 conditions per place. [2024-06-21 18:59:06,613 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 370 selfloop transitions, 47 changer transitions 0/491 dead transitions. [2024-06-21 18:59:06,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 491 transitions, 5042 flow [2024-06-21 18:59:06,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:59:06,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:59:06,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-21 18:59:06,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41046831955922863 [2024-06-21 18:59:06,614 INFO L175 Difference]: Start difference. First operand has 517 places, 479 transitions, 4132 flow. Second operand 11 states and 149 transitions. [2024-06-21 18:59:06,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 491 transitions, 5042 flow [2024-06-21 18:59:08,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 491 transitions, 4853 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-21 18:59:08,728 INFO L231 Difference]: Finished difference. Result has 516 places, 480 transitions, 4093 flow [2024-06-21 18:59:08,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3943, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4093, PETRI_PLACES=516, PETRI_TRANSITIONS=480} [2024-06-21 18:59:08,728 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 484 predicate places. [2024-06-21 18:59:08,728 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 480 transitions, 4093 flow [2024-06-21 18:59:08,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:59:08,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:59:08,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:59:08,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-21 18:59:08,729 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:59:08,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:59:08,729 INFO L85 PathProgramCache]: Analyzing trace with hash -588636493, now seen corresponding path program 6 times [2024-06-21 18:59:08,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:59:08,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381481135] [2024-06-21 18:59:08,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:59:08,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:59:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:59:10,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:59:10,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:59:10,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381481135] [2024-06-21 18:59:10,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381481135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:59:10,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:59:10,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:59:10,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062019050] [2024-06-21 18:59:10,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:59:10,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:59:10,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:59:10,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:59:10,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:59:10,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:59:10,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 480 transitions, 4093 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:59:10,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:59:10,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:59:10,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:59:10,798 INFO L124 PetriNetUnfolderBase]: 841/1533 cut-off events. [2024-06-21 18:59:10,798 INFO L125 PetriNetUnfolderBase]: For 748991/748991 co-relation queries the response was YES. [2024-06-21 18:59:10,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14579 conditions, 1533 events. 841/1533 cut-off events. For 748991/748991 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 8915 event pairs, 46 based on Foata normal form. 1/1533 useless extension candidates. Maximal degree in co-relation 14326. Up to 1056 conditions per place. [2024-06-21 18:59:10,824 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 376 selfloop transitions, 124 changer transitions 0/503 dead transitions. [2024-06-21 18:59:10,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 503 transitions, 6597 flow [2024-06-21 18:59:10,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:59:10,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:59:10,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-21 18:59:10,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4484848484848485 [2024-06-21 18:59:10,825 INFO L175 Difference]: Start difference. First operand has 516 places, 480 transitions, 4093 flow. Second operand 10 states and 148 transitions. [2024-06-21 18:59:10,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 503 transitions, 6597 flow [2024-06-21 18:59:13,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 503 transitions, 6457 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-21 18:59:13,119 INFO L231 Difference]: Finished difference. Result has 517 places, 488 transitions, 4378 flow [2024-06-21 18:59:13,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3953, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4378, PETRI_PLACES=517, PETRI_TRANSITIONS=488} [2024-06-21 18:59:13,119 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 485 predicate places. [2024-06-21 18:59:13,120 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 488 transitions, 4378 flow [2024-06-21 18:59:13,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:59:13,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:59:13,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:59:13,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-21 18:59:13,120 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:59:13,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:59:13,120 INFO L85 PathProgramCache]: Analyzing trace with hash -588636183, now seen corresponding path program 2 times [2024-06-21 18:59:13,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:59:13,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526241138] [2024-06-21 18:59:13,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:59:13,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:59:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:59:14,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:59:14,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:59:14,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526241138] [2024-06-21 18:59:14,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526241138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:59:14,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:59:14,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 18:59:14,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839781522] [2024-06-21 18:59:14,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:59:14,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 18:59:14,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:59:14,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 18:59:14,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 18:59:15,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:59:15,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 488 transitions, 4378 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) [2024-06-21 18:59:15,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:59:15,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:59:15,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:59:15,605 INFO L124 PetriNetUnfolderBase]: 844/1536 cut-off events. [2024-06-21 18:59:15,605 INFO L125 PetriNetUnfolderBase]: For 755090/755090 co-relation queries the response was YES. [2024-06-21 18:59:15,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14752 conditions, 1536 events. 844/1536 cut-off events. For 755090/755090 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 8906 event pairs, 56 based on Foata normal form. 1/1536 useless extension candidates. Maximal degree in co-relation 14499. Up to 1301 conditions per place. [2024-06-21 18:59:15,630 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 435 selfloop transitions, 64 changer transitions 0/502 dead transitions. [2024-06-21 18:59:15,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 502 transitions, 5444 flow [2024-06-21 18:59:15,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:59:15,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:59:15,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 18:59:15,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-21 18:59:15,631 INFO L175 Difference]: Start difference. First operand has 517 places, 488 transitions, 4378 flow. Second operand 11 states and 147 transitions. [2024-06-21 18:59:15,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 502 transitions, 5444 flow [2024-06-21 18:59:17,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 502 transitions, 5312 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-21 18:59:17,974 INFO L231 Difference]: Finished difference. Result has 524 places, 490 transitions, 4423 flow [2024-06-21 18:59:17,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4246, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4423, PETRI_PLACES=524, PETRI_TRANSITIONS=490} [2024-06-21 18:59:17,974 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 492 predicate places. [2024-06-21 18:59:17,974 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 490 transitions, 4423 flow [2024-06-21 18:59:17,975 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) [2024-06-21 18:59:17,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:59:17,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:59:17,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-21 18:59:17,975 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:59:17,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:59:17,976 INFO L85 PathProgramCache]: Analyzing trace with hash -816956391, now seen corresponding path program 11 times [2024-06-21 18:59:17,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:59:17,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90560351] [2024-06-21 18:59:17,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:59:17,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:59:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:59:19,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:59:19,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:59:19,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90560351] [2024-06-21 18:59:19,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90560351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:59:19,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:59:19,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:59:19,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828345170] [2024-06-21 18:59:19,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:59:19,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:59:19,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:59:19,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:59:19,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:59:20,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:59:20,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 490 transitions, 4423 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) [2024-06-21 18:59:20,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:59:20,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:59:20,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:59:20,682 INFO L124 PetriNetUnfolderBase]: 852/1553 cut-off events. [2024-06-21 18:59:20,682 INFO L125 PetriNetUnfolderBase]: For 785418/785418 co-relation queries the response was YES. [2024-06-21 18:59:20,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15200 conditions, 1553 events. 852/1553 cut-off events. For 785418/785418 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 9038 event pairs, 54 based on Foata normal form. 1/1553 useless extension candidates. Maximal degree in co-relation 14944. Up to 1241 conditions per place. [2024-06-21 18:59:20,707 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 416 selfloop transitions, 87 changer transitions 0/506 dead transitions. [2024-06-21 18:59:20,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 506 transitions, 6011 flow [2024-06-21 18:59:20,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:59:20,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:59:20,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-21 18:59:20,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2024-06-21 18:59:20,709 INFO L175 Difference]: Start difference. First operand has 524 places, 490 transitions, 4423 flow. Second operand 12 states and 158 transitions. [2024-06-21 18:59:20,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 506 transitions, 6011 flow [2024-06-21 18:59:23,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 506 transitions, 5850 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-21 18:59:23,426 INFO L231 Difference]: Finished difference. Result has 527 places, 494 transitions, 4561 flow [2024-06-21 18:59:23,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4262, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4561, PETRI_PLACES=527, PETRI_TRANSITIONS=494} [2024-06-21 18:59:23,426 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 495 predicate places. [2024-06-21 18:59:23,426 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 494 transitions, 4561 flow [2024-06-21 18:59:23,427 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) [2024-06-21 18:59:23,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:59:23,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:59:23,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-21 18:59:23,427 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:59:23,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:59:23,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1820456989, now seen corresponding path program 7 times [2024-06-21 18:59:23,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:59:23,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127125311] [2024-06-21 18:59:23,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:59:23,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:59:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:59:24,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:59:24,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:59:24,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127125311] [2024-06-21 18:59:24,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127125311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:59:24,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:59:24,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:59:24,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984738871] [2024-06-21 18:59:24,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:59:24,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:59:24,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:59:24,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:59:24,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:59:24,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 18:59:24,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 494 transitions, 4561 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:59:24,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:59:24,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 18:59:24,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:59:25,472 INFO L124 PetriNetUnfolderBase]: 855/1558 cut-off events. [2024-06-21 18:59:25,472 INFO L125 PetriNetUnfolderBase]: For 793026/793026 co-relation queries the response was YES. [2024-06-21 18:59:25,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15312 conditions, 1558 events. 855/1558 cut-off events. For 793026/793026 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 9071 event pairs, 46 based on Foata normal form. 1/1558 useless extension candidates. Maximal degree in co-relation 15055. Up to 1078 conditions per place. [2024-06-21 18:59:25,499 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 384 selfloop transitions, 124 changer transitions 0/511 dead transitions. [2024-06-21 18:59:25,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 511 transitions, 6965 flow [2024-06-21 18:59:25,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:59:25,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:59:25,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-21 18:59:25,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45151515151515154 [2024-06-21 18:59:25,500 INFO L175 Difference]: Start difference. First operand has 527 places, 494 transitions, 4561 flow. Second operand 10 states and 149 transitions. [2024-06-21 18:59:25,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 511 transitions, 6965 flow [2024-06-21 18:59:28,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 511 transitions, 6798 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-21 18:59:28,316 INFO L231 Difference]: Finished difference. Result has 529 places, 496 transitions, 4682 flow [2024-06-21 18:59:28,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4394, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4682, PETRI_PLACES=529, PETRI_TRANSITIONS=496} [2024-06-21 18:59:28,316 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 497 predicate places. [2024-06-21 18:59:28,316 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 496 transitions, 4682 flow [2024-06-21 18:59:28,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:59:28,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:59:28,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:59:28,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-21 18:59:28,317 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:59:28,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:59:28,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1820687877, now seen corresponding path program 12 times [2024-06-21 18:59:28,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:59:28,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281427614] [2024-06-21 18:59:28,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:59:28,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:59:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:59:29,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:59:29,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:59:29,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281427614] [2024-06-21 18:59:29,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281427614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:59:29,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:59:29,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:59:29,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547737521] [2024-06-21 18:59:29,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:59:29,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:59:29,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:59:29,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:59:29,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:59:30,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:59:30,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 496 transitions, 4682 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) [2024-06-21 18:59:30,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:59:30,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:59:30,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:59:30,832 INFO L124 PetriNetUnfolderBase]: 868/1583 cut-off events. [2024-06-21 18:59:30,832 INFO L125 PetriNetUnfolderBase]: For 849363/849363 co-relation queries the response was YES. [2024-06-21 18:59:30,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16159 conditions, 1583 events. 868/1583 cut-off events. For 849363/849363 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 9247 event pairs, 54 based on Foata normal form. 1/1583 useless extension candidates. Maximal degree in co-relation 15901. Up to 1214 conditions per place. [2024-06-21 18:59:30,859 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 407 selfloop transitions, 106 changer transitions 0/516 dead transitions. [2024-06-21 18:59:30,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 516 transitions, 7210 flow [2024-06-21 18:59:30,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:59:30,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:59:30,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-21 18:59:30,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-21 18:59:30,860 INFO L175 Difference]: Start difference. First operand has 529 places, 496 transitions, 4682 flow. Second operand 12 states and 160 transitions. [2024-06-21 18:59:30,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 516 transitions, 7210 flow [2024-06-21 18:59:33,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 516 transitions, 6952 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-21 18:59:33,752 INFO L231 Difference]: Finished difference. Result has 534 places, 502 transitions, 4785 flow [2024-06-21 18:59:33,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4424, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4785, PETRI_PLACES=534, PETRI_TRANSITIONS=502} [2024-06-21 18:59:33,753 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 502 predicate places. [2024-06-21 18:59:33,753 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 502 transitions, 4785 flow [2024-06-21 18:59:33,753 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) [2024-06-21 18:59:33,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:59:33,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:59:33,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-21 18:59:33,753 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:59:33,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:59:33,753 INFO L85 PathProgramCache]: Analyzing trace with hash -2048589027, now seen corresponding path program 13 times [2024-06-21 18:59:33,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:59:33,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823483781] [2024-06-21 18:59:33,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:59:33,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:59:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:59:35,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:59:35,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:59:35,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823483781] [2024-06-21 18:59:35,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823483781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:59:35,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:59:35,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:59:35,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477890907] [2024-06-21 18:59:35,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:59:35,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:59:35,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:59:35,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:59:35,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:59:35,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:59:35,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 502 transitions, 4785 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) [2024-06-21 18:59:35,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:59:35,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:59:35,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:59:36,283 INFO L124 PetriNetUnfolderBase]: 876/1596 cut-off events. [2024-06-21 18:59:36,283 INFO L125 PetriNetUnfolderBase]: For 884664/884664 co-relation queries the response was YES. [2024-06-21 18:59:36,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16511 conditions, 1596 events. 876/1596 cut-off events. For 884664/884664 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 9318 event pairs, 48 based on Foata normal form. 1/1596 useless extension candidates. Maximal degree in co-relation 16251. Up to 1224 conditions per place. [2024-06-21 18:59:36,309 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 409 selfloop transitions, 107 changer transitions 0/519 dead transitions. [2024-06-21 18:59:36,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 519 transitions, 6839 flow [2024-06-21 18:59:36,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:59:36,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:59:36,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-21 18:59:36,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-21 18:59:36,310 INFO L175 Difference]: Start difference. First operand has 534 places, 502 transitions, 4785 flow. Second operand 12 states and 160 transitions. [2024-06-21 18:59:36,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 519 transitions, 6839 flow [2024-06-21 18:59:40,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 519 transitions, 6655 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-21 18:59:40,861 INFO L231 Difference]: Finished difference. Result has 539 places, 506 transitions, 4924 flow [2024-06-21 18:59:40,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4605, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4924, PETRI_PLACES=539, PETRI_TRANSITIONS=506} [2024-06-21 18:59:40,861 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 507 predicate places. [2024-06-21 18:59:40,861 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 506 transitions, 4924 flow [2024-06-21 18:59:40,862 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) [2024-06-21 18:59:40,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:59:40,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:59:40,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-21 18:59:40,862 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:59:40,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:59:40,862 INFO L85 PathProgramCache]: Analyzing trace with hash -2048595537, now seen corresponding path program 14 times [2024-06-21 18:59:40,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:59:40,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404697112] [2024-06-21 18:59:40,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:59:40,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:59:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:59:42,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:59:42,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:59:42,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404697112] [2024-06-21 18:59:42,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404697112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:59:42,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:59:42,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:59:42,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908543617] [2024-06-21 18:59:42,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:59:42,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:59:42,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:59:42,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:59:42,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:59:42,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:59:42,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 506 transitions, 4924 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) [2024-06-21 18:59:42,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:59:42,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:59:42,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:59:43,321 INFO L124 PetriNetUnfolderBase]: 874/1593 cut-off events. [2024-06-21 18:59:43,321 INFO L125 PetriNetUnfolderBase]: For 865669/865669 co-relation queries the response was YES. [2024-06-21 18:59:43,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16281 conditions, 1593 events. 874/1593 cut-off events. For 865669/865669 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 9353 event pairs, 52 based on Foata normal form. 1/1593 useless extension candidates. Maximal degree in co-relation 16020. Up to 1222 conditions per place. [2024-06-21 18:59:43,348 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 409 selfloop transitions, 106 changer transitions 0/518 dead transitions. [2024-06-21 18:59:43,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 518 transitions, 6428 flow [2024-06-21 18:59:43,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:59:43,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:59:43,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-21 18:59:43,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-21 18:59:43,349 INFO L175 Difference]: Start difference. First operand has 539 places, 506 transitions, 4924 flow. Second operand 12 states and 160 transitions. [2024-06-21 18:59:43,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 518 transitions, 6428 flow [2024-06-21 18:59:46,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 518 transitions, 6170 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-21 18:59:46,958 INFO L231 Difference]: Finished difference. Result has 543 places, 506 transitions, 4883 flow [2024-06-21 18:59:46,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4666, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4883, PETRI_PLACES=543, PETRI_TRANSITIONS=506} [2024-06-21 18:59:46,958 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 511 predicate places. [2024-06-21 18:59:46,958 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 506 transitions, 4883 flow [2024-06-21 18:59:46,958 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) [2024-06-21 18:59:46,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:59:46,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:59:46,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-21 18:59:46,959 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:59:46,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:59:46,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1820457237, now seen corresponding path program 15 times [2024-06-21 18:59:46,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:59:46,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983276408] [2024-06-21 18:59:46,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:59:46,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:59:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:59:48,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:59:48,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:59:48,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983276408] [2024-06-21 18:59:48,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983276408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:59:48,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:59:48,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:59:48,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684418858] [2024-06-21 18:59:48,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:59:48,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:59:48,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:59:48,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:59:48,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:59:48,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:59:48,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 506 transitions, 4883 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) [2024-06-21 18:59:48,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:59:48,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:59:48,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:59:49,152 INFO L124 PetriNetUnfolderBase]: 877/1600 cut-off events. [2024-06-21 18:59:49,152 INFO L125 PetriNetUnfolderBase]: For 871244/871244 co-relation queries the response was YES. [2024-06-21 18:59:49,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16318 conditions, 1600 events. 877/1600 cut-off events. For 871244/871244 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 9404 event pairs, 54 based on Foata normal form. 1/1600 useless extension candidates. Maximal degree in co-relation 16056. Up to 1226 conditions per place. [2024-06-21 18:59:49,180 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 408 selfloop transitions, 111 changer transitions 0/522 dead transitions. [2024-06-21 18:59:49,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 522 transitions, 7353 flow [2024-06-21 18:59:49,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:59:49,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:59:49,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-21 18:59:49,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065656565656566 [2024-06-21 18:59:49,181 INFO L175 Difference]: Start difference. First operand has 543 places, 506 transitions, 4883 flow. Second operand 12 states and 161 transitions. [2024-06-21 18:59:49,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 522 transitions, 7353 flow [2024-06-21 18:59:52,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 522 transitions, 7131 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-21 18:59:52,808 INFO L231 Difference]: Finished difference. Result has 544 places, 508 transitions, 4944 flow [2024-06-21 18:59:52,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4665, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4944, PETRI_PLACES=544, PETRI_TRANSITIONS=508} [2024-06-21 18:59:52,808 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 512 predicate places. [2024-06-21 18:59:52,808 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 508 transitions, 4944 flow [2024-06-21 18:59:52,808 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) [2024-06-21 18:59:52,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:59:52,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:59:52,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-21 18:59:52,809 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:59:52,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:59:52,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1820694387, now seen corresponding path program 16 times [2024-06-21 18:59:52,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:59:52,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843665446] [2024-06-21 18:59:52,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:59:52,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:59:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:59:54,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:59:54,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:59:54,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843665446] [2024-06-21 18:59:54,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843665446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:59:54,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:59:54,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 18:59:54,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716964952] [2024-06-21 18:59:54,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:59:54,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 18:59:54,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:59:54,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 18:59:54,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 18:59:54,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 18:59:54,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 508 transitions, 4944 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) [2024-06-21 18:59:54,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:59:54,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 18:59:54,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:59:55,362 INFO L124 PetriNetUnfolderBase]: 875/1597 cut-off events. [2024-06-21 18:59:55,362 INFO L125 PetriNetUnfolderBase]: For 855761/855761 co-relation queries the response was YES. [2024-06-21 18:59:55,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16105 conditions, 1597 events. 875/1597 cut-off events. For 855761/855761 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 9368 event pairs, 54 based on Foata normal form. 1/1597 useless extension candidates. Maximal degree in co-relation 15842. Up to 1224 conditions per place. [2024-06-21 18:59:55,386 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 404 selfloop transitions, 114 changer transitions 0/521 dead transitions. [2024-06-21 18:59:55,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 521 transitions, 6910 flow [2024-06-21 18:59:55,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 18:59:55,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 18:59:55,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-21 18:59:55,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2024-06-21 18:59:55,397 INFO L175 Difference]: Start difference. First operand has 544 places, 508 transitions, 4944 flow. Second operand 12 states and 158 transitions. [2024-06-21 18:59:55,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 521 transitions, 6910 flow [2024-06-21 18:59:58,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 521 transitions, 6623 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-21 18:59:58,921 INFO L231 Difference]: Finished difference. Result has 547 places, 508 transitions, 4890 flow [2024-06-21 18:59:58,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4657, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4890, PETRI_PLACES=547, PETRI_TRANSITIONS=508} [2024-06-21 18:59:58,922 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 515 predicate places. [2024-06-21 18:59:58,922 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 508 transitions, 4890 flow [2024-06-21 18:59:58,922 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) [2024-06-21 18:59:58,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:59:58,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:59:58,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-21 18:59:58,922 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 18:59:58,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:59:58,922 INFO L85 PathProgramCache]: Analyzing trace with hash -580592923, now seen corresponding path program 8 times [2024-06-21 18:59:58,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:59:58,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679205174] [2024-06-21 18:59:58,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:59:58,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:59:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:00:00,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:00:00,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:00:00,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679205174] [2024-06-21 19:00:00,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679205174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:00:00,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:00:00,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:00:00,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554390596] [2024-06-21 19:00:00,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:00:00,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:00:00,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:00:00,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:00:00,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:00:00,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 19:00:00,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 508 transitions, 4890 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:00:00,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:00:00,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 19:00:00,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:00:01,024 INFO L124 PetriNetUnfolderBase]: 883/1610 cut-off events. [2024-06-21 19:00:01,025 INFO L125 PetriNetUnfolderBase]: For 888435/888435 co-relation queries the response was YES. [2024-06-21 19:00:01,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16414 conditions, 1610 events. 883/1610 cut-off events. For 888435/888435 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 9468 event pairs, 46 based on Foata normal form. 1/1610 useless extension candidates. Maximal degree in co-relation 16150. Up to 1121 conditions per place. [2024-06-21 19:00:01,054 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 377 selfloop transitions, 147 changer transitions 0/527 dead transitions. [2024-06-21 19:00:01,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 527 transitions, 7404 flow [2024-06-21 19:00:01,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:00:01,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:00:01,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-21 19:00:01,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-06-21 19:00:01,054 INFO L175 Difference]: Start difference. First operand has 547 places, 508 transitions, 4890 flow. Second operand 10 states and 147 transitions. [2024-06-21 19:00:01,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 527 transitions, 7404 flow [2024-06-21 19:00:04,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 527 transitions, 7244 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 19:00:04,887 INFO L231 Difference]: Finished difference. Result has 548 places, 512 transitions, 5105 flow [2024-06-21 19:00:04,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4730, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5105, PETRI_PLACES=548, PETRI_TRANSITIONS=512} [2024-06-21 19:00:04,888 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 516 predicate places. [2024-06-21 19:00:04,888 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 512 transitions, 5105 flow [2024-06-21 19:00:04,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:00:04,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:00:04,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:00:04,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-21 19:00:04,888 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:00:04,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:00:04,888 INFO L85 PathProgramCache]: Analyzing trace with hash -816776653, now seen corresponding path program 9 times [2024-06-21 19:00:04,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:00:04,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418697367] [2024-06-21 19:00:04,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:00:04,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:00:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:00:06,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:00:06,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:00:06,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418697367] [2024-06-21 19:00:06,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418697367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:00:06,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:00:06,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:00:06,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905318257] [2024-06-21 19:00:06,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:00:06,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:00:06,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:00:06,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:00:06,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:00:06,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 19:00:06,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 512 transitions, 5105 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:00:06,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:00:06,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 19:00:06,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:00:06,929 INFO L124 PetriNetUnfolderBase]: 886/1615 cut-off events. [2024-06-21 19:00:06,929 INFO L125 PetriNetUnfolderBase]: For 896675/896675 co-relation queries the response was YES. [2024-06-21 19:00:06,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16608 conditions, 1615 events. 886/1615 cut-off events. For 896675/896675 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 9482 event pairs, 46 based on Foata normal form. 1/1615 useless extension candidates. Maximal degree in co-relation 16344. Up to 1125 conditions per place. [2024-06-21 19:00:06,957 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 395 selfloop transitions, 129 changer transitions 0/527 dead transitions. [2024-06-21 19:00:06,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 527 transitions, 6685 flow [2024-06-21 19:00:06,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:00:06,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:00:06,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 146 transitions. [2024-06-21 19:00:06,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44242424242424244 [2024-06-21 19:00:06,959 INFO L175 Difference]: Start difference. First operand has 548 places, 512 transitions, 5105 flow. Second operand 10 states and 146 transitions. [2024-06-21 19:00:06,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 527 transitions, 6685 flow [2024-06-21 19:00:10,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 527 transitions, 6424 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-21 19:00:10,915 INFO L231 Difference]: Finished difference. Result has 552 places, 514 transitions, 5156 flow [2024-06-21 19:00:10,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4848, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5156, PETRI_PLACES=552, PETRI_TRANSITIONS=514} [2024-06-21 19:00:10,915 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 520 predicate places. [2024-06-21 19:00:10,916 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 514 transitions, 5156 flow [2024-06-21 19:00:10,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:00:10,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:00:10,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:00:10,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-21 19:00:10,916 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:00:10,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:00:10,917 INFO L85 PathProgramCache]: Analyzing trace with hash -2042339427, now seen corresponding path program 17 times [2024-06-21 19:00:10,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:00:10,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096129512] [2024-06-21 19:00:10,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:00:10,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:00:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:00:12,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:00:12,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:00:12,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096129512] [2024-06-21 19:00:12,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096129512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:00:12,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:00:12,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:00:12,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333302963] [2024-06-21 19:00:12,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:00:12,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:00:12,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:00:12,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:00:12,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:00:12,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 19:00:12,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 514 transitions, 5156 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) [2024-06-21 19:00:12,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:00:12,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 19:00:12,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:00:13,451 INFO L124 PetriNetUnfolderBase]: 889/1622 cut-off events. [2024-06-21 19:00:13,451 INFO L125 PetriNetUnfolderBase]: For 905000/905000 co-relation queries the response was YES. [2024-06-21 19:00:13,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16675 conditions, 1622 events. 889/1622 cut-off events. For 905000/905000 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 9574 event pairs, 54 based on Foata normal form. 1/1622 useless extension candidates. Maximal degree in co-relation 16410. Up to 1246 conditions per place. [2024-06-21 19:00:13,481 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 418 selfloop transitions, 108 changer transitions 0/529 dead transitions. [2024-06-21 19:00:13,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 529 transitions, 7204 flow [2024-06-21 19:00:13,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:00:13,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:00:13,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 162 transitions. [2024-06-21 19:00:13,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 19:00:13,482 INFO L175 Difference]: Start difference. First operand has 552 places, 514 transitions, 5156 flow. Second operand 12 states and 162 transitions. [2024-06-21 19:00:13,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 529 transitions, 7204 flow [2024-06-21 19:00:17,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 529 transitions, 6900 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-21 19:00:17,422 INFO L231 Difference]: Finished difference. Result has 556 places, 516 transitions, 5127 flow [2024-06-21 19:00:17,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4852, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5127, PETRI_PLACES=556, PETRI_TRANSITIONS=516} [2024-06-21 19:00:17,423 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 524 predicate places. [2024-06-21 19:00:17,423 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 516 transitions, 5127 flow [2024-06-21 19:00:17,423 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) [2024-06-21 19:00:17,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:00:17,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:00:17,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-21 19:00:17,425 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:00:17,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:00:17,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1820687629, now seen corresponding path program 10 times [2024-06-21 19:00:17,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:00:17,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762375491] [2024-06-21 19:00:17,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:00:17,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:00:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:00:18,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:00:18,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:00:18,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762375491] [2024-06-21 19:00:18,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762375491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:00:18,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:00:18,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:00:18,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868376530] [2024-06-21 19:00:18,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:00:18,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:00:18,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:00:18,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:00:18,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:00:18,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 19:00:18,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 516 transitions, 5127 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:00:18,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:00:18,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 19:00:18,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:00:19,617 INFO L124 PetriNetUnfolderBase]: 887/1619 cut-off events. [2024-06-21 19:00:19,617 INFO L125 PetriNetUnfolderBase]: For 886865/886865 co-relation queries the response was YES. [2024-06-21 19:00:19,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16292 conditions, 1619 events. 887/1619 cut-off events. For 886865/886865 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 9542 event pairs, 46 based on Foata normal form. 1/1619 useless extension candidates. Maximal degree in co-relation 16026. Up to 1128 conditions per place. [2024-06-21 19:00:19,643 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 393 selfloop transitions, 134 changer transitions 0/530 dead transitions. [2024-06-21 19:00:19,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 530 transitions, 7129 flow [2024-06-21 19:00:19,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:00:19,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:00:19,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 146 transitions. [2024-06-21 19:00:19,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44242424242424244 [2024-06-21 19:00:19,645 INFO L175 Difference]: Start difference. First operand has 556 places, 516 transitions, 5127 flow. Second operand 10 states and 146 transitions. [2024-06-21 19:00:19,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 530 transitions, 7129 flow [2024-06-21 19:00:23,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 530 transitions, 6678 flow, removed 32 selfloop flow, removed 13 redundant places. [2024-06-21 19:00:23,364 INFO L231 Difference]: Finished difference. Result has 553 places, 516 transitions, 4950 flow [2024-06-21 19:00:23,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4676, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4950, PETRI_PLACES=553, PETRI_TRANSITIONS=516} [2024-06-21 19:00:23,365 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 521 predicate places. [2024-06-21 19:00:23,365 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 516 transitions, 4950 flow [2024-06-21 19:00:23,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:00:23,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:00:23,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:00:23,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-21 19:00:23,365 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:00:23,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:00:23,365 INFO L85 PathProgramCache]: Analyzing trace with hash -39573229, now seen corresponding path program 3 times [2024-06-21 19:00:23,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:00:23,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852625097] [2024-06-21 19:00:23,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:00:23,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:00:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:00:24,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:00:24,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:00:24,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852625097] [2024-06-21 19:00:24,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852625097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:00:24,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:00:24,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:00:24,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119283572] [2024-06-21 19:00:24,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:00:24,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:00:24,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:00:24,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:00:24,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:00:25,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 19:00:25,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 516 transitions, 4950 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:00:25,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:00:25,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 19:00:25,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:00:25,590 INFO L124 PetriNetUnfolderBase]: 890/1624 cut-off events. [2024-06-21 19:00:25,590 INFO L125 PetriNetUnfolderBase]: For 893302/893302 co-relation queries the response was YES. [2024-06-21 19:00:25,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16311 conditions, 1624 events. 890/1624 cut-off events. For 893302/893302 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 9617 event pairs, 56 based on Foata normal form. 1/1624 useless extension candidates. Maximal degree in co-relation 16045. Up to 1377 conditions per place. [2024-06-21 19:00:25,618 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 459 selfloop transitions, 68 changer transitions 0/530 dead transitions. [2024-06-21 19:00:25,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 530 transitions, 6076 flow [2024-06-21 19:00:25,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:00:25,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:00:25,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-21 19:00:25,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-21 19:00:25,619 INFO L175 Difference]: Start difference. First operand has 553 places, 516 transitions, 4950 flow. Second operand 10 states and 138 transitions. [2024-06-21 19:00:25,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 530 transitions, 6076 flow [2024-06-21 19:00:29,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 530 transitions, 5815 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 19:00:29,112 INFO L231 Difference]: Finished difference. Result has 554 places, 518 transitions, 4878 flow [2024-06-21 19:00:29,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4689, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4878, PETRI_PLACES=554, PETRI_TRANSITIONS=518} [2024-06-21 19:00:29,113 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 522 predicate places. [2024-06-21 19:00:29,113 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 518 transitions, 4878 flow [2024-06-21 19:00:29,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:00:29,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:00:29,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:00:29,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-21 19:00:29,113 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:00:29,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:00:29,114 INFO L85 PathProgramCache]: Analyzing trace with hash -810520543, now seen corresponding path program 11 times [2024-06-21 19:00:29,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:00:29,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351956098] [2024-06-21 19:00:29,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:00:29,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:00:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:00:30,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:00:30,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:00:30,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351956098] [2024-06-21 19:00:30,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351956098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:00:30,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:00:30,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:00:30,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146498198] [2024-06-21 19:00:30,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:00:30,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:00:30,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:00:30,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:00:30,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:00:30,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 19:00:30,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 518 transitions, 4878 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:00:30,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:00:30,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 19:00:30,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:00:31,248 INFO L124 PetriNetUnfolderBase]: 893/1629 cut-off events. [2024-06-21 19:00:31,249 INFO L125 PetriNetUnfolderBase]: For 900175/900175 co-relation queries the response was YES. [2024-06-21 19:00:31,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16276 conditions, 1629 events. 893/1629 cut-off events. For 900175/900175 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 9645 event pairs, 46 based on Foata normal form. 1/1629 useless extension candidates. Maximal degree in co-relation 16009. Up to 1137 conditions per place. [2024-06-21 19:00:31,274 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 409 selfloop transitions, 122 changer transitions 0/534 dead transitions. [2024-06-21 19:00:31,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 534 transitions, 6934 flow [2024-06-21 19:00:31,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:00:31,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:00:31,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-21 19:00:31,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-21 19:00:31,275 INFO L175 Difference]: Start difference. First operand has 554 places, 518 transitions, 4878 flow. Second operand 10 states and 150 transitions. [2024-06-21 19:00:31,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 534 transitions, 6934 flow [2024-06-21 19:00:34,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 534 transitions, 6761 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-21 19:00:34,678 INFO L231 Difference]: Finished difference. Result has 556 places, 520 transitions, 4993 flow [2024-06-21 19:00:34,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4705, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4993, PETRI_PLACES=556, PETRI_TRANSITIONS=520} [2024-06-21 19:00:34,679 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 524 predicate places. [2024-06-21 19:00:34,679 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 520 transitions, 4993 flow [2024-06-21 19:00:34,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:00:34,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:00:34,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:00:34,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-21 19:00:34,679 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:00:34,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:00:34,679 INFO L85 PathProgramCache]: Analyzing trace with hash -810520791, now seen corresponding path program 18 times [2024-06-21 19:00:34,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:00:34,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107207900] [2024-06-21 19:00:34,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:00:34,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:00:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:00:36,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:00:36,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:00:36,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107207900] [2024-06-21 19:00:36,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107207900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:00:36,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:00:36,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:00:36,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695498237] [2024-06-21 19:00:36,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:00:36,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:00:36,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:00:36,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:00:36,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:00:36,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 19:00:36,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 520 transitions, 4993 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) [2024-06-21 19:00:36,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:00:36,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 19:00:36,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:00:37,119 INFO L124 PetriNetUnfolderBase]: 896/1636 cut-off events. [2024-06-21 19:00:37,119 INFO L125 PetriNetUnfolderBase]: For 908459/908459 co-relation queries the response was YES. [2024-06-21 19:00:37,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16447 conditions, 1636 events. 896/1636 cut-off events. For 908459/908459 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 9721 event pairs, 54 based on Foata normal form. 1/1636 useless extension candidates. Maximal degree in co-relation 16179. Up to 1349 conditions per place. [2024-06-21 19:00:37,149 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 453 selfloop transitions, 77 changer transitions 0/533 dead transitions. [2024-06-21 19:00:37,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 533 transitions, 6127 flow [2024-06-21 19:00:37,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:00:37,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:00:37,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-21 19:00:37,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4132231404958678 [2024-06-21 19:00:37,150 INFO L175 Difference]: Start difference. First operand has 556 places, 520 transitions, 4993 flow. Second operand 11 states and 150 transitions. [2024-06-21 19:00:37,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 533 transitions, 6127 flow [2024-06-21 19:00:41,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 533 transitions, 5751 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-21 19:00:41,061 INFO L231 Difference]: Finished difference. Result has 558 places, 522 transitions, 4828 flow [2024-06-21 19:00:41,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4617, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4828, PETRI_PLACES=558, PETRI_TRANSITIONS=522} [2024-06-21 19:00:41,061 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 526 predicate places. [2024-06-21 19:00:41,061 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 522 transitions, 4828 flow [2024-06-21 19:00:41,062 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) [2024-06-21 19:00:41,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:00:41,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:00:41,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-21 19:00:41,062 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:00:41,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:00:41,063 INFO L85 PathProgramCache]: Analyzing trace with hash -39284929, now seen corresponding path program 4 times [2024-06-21 19:00:41,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:00:41,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730174192] [2024-06-21 19:00:41,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:00:41,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:00:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:00:42,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:00:42,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:00:42,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730174192] [2024-06-21 19:00:42,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730174192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:00:42,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:00:42,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:00:42,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543281422] [2024-06-21 19:00:42,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:00:42,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:00:42,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:00:42,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:00:42,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:00:42,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 19:00:42,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 522 transitions, 4828 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:00:42,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:00:42,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 19:00:42,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:00:43,325 INFO L124 PetriNetUnfolderBase]: 899/1641 cut-off events. [2024-06-21 19:00:43,325 INFO L125 PetriNetUnfolderBase]: For 916034/916034 co-relation queries the response was YES. [2024-06-21 19:00:43,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16368 conditions, 1641 events. 899/1641 cut-off events. For 916034/916034 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 9745 event pairs, 56 based on Foata normal form. 1/1641 useless extension candidates. Maximal degree in co-relation 16098. Up to 1392 conditions per place. [2024-06-21 19:00:43,354 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 457 selfloop transitions, 76 changer transitions 0/536 dead transitions. [2024-06-21 19:00:43,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 536 transitions, 5970 flow [2024-06-21 19:00:43,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:00:43,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:00:43,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-21 19:00:43,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-06-21 19:00:43,355 INFO L175 Difference]: Start difference. First operand has 558 places, 522 transitions, 4828 flow. Second operand 11 states and 145 transitions. [2024-06-21 19:00:43,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 536 transitions, 5970 flow [2024-06-21 19:00:47,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 536 transitions, 5779 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-21 19:00:47,227 INFO L231 Difference]: Finished difference. Result has 560 places, 524 transitions, 4846 flow [2024-06-21 19:00:47,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4637, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4846, PETRI_PLACES=560, PETRI_TRANSITIONS=524} [2024-06-21 19:00:47,228 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 528 predicate places. [2024-06-21 19:00:47,228 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 524 transitions, 4846 flow [2024-06-21 19:00:47,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:00:47,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:00:47,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:00:47,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-21 19:00:47,228 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:00:47,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:00:47,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1812106209, now seen corresponding path program 5 times [2024-06-21 19:00:47,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:00:47,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28413989] [2024-06-21 19:00:47,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:00:47,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:00:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:00:48,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:00:48,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:00:48,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28413989] [2024-06-21 19:00:48,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28413989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:00:48,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:00:48,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:00:48,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654542596] [2024-06-21 19:00:48,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:00:48,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:00:48,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:00:48,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:00:48,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:00:49,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 19:00:49,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 524 transitions, 4846 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) [2024-06-21 19:00:49,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:00:49,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 19:00:49,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:00:49,701 INFO L124 PetriNetUnfolderBase]: 907/1654 cut-off events. [2024-06-21 19:00:49,701 INFO L125 PetriNetUnfolderBase]: For 950467/950467 co-relation queries the response was YES. [2024-06-21 19:00:49,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16773 conditions, 1654 events. 907/1654 cut-off events. For 950467/950467 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 9821 event pairs, 56 based on Foata normal form. 1/1654 useless extension candidates. Maximal degree in co-relation 16502. Up to 1386 conditions per place. [2024-06-21 19:00:49,724 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 451 selfloop transitions, 87 changer transitions 0/541 dead transitions. [2024-06-21 19:00:49,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 541 transitions, 6524 flow [2024-06-21 19:00:49,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:00:49,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:00:49,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 19:00:49,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-21 19:00:49,725 INFO L175 Difference]: Start difference. First operand has 560 places, 524 transitions, 4846 flow. Second operand 11 states and 147 transitions. [2024-06-21 19:00:49,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 541 transitions, 6524 flow [2024-06-21 19:00:53,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 541 transitions, 6331 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-21 19:00:53,674 INFO L231 Difference]: Finished difference. Result has 562 places, 528 transitions, 4940 flow [2024-06-21 19:00:53,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4653, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4940, PETRI_PLACES=562, PETRI_TRANSITIONS=528} [2024-06-21 19:00:53,675 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 530 predicate places. [2024-06-21 19:00:53,675 INFO L495 AbstractCegarLoop]: Abstraction has has 562 places, 528 transitions, 4940 flow [2024-06-21 19:00:53,675 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) [2024-06-21 19:00:53,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:00:53,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:00:53,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-21 19:00:53,675 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:00:53,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:00:53,675 INFO L85 PathProgramCache]: Analyzing trace with hash -2042093349, now seen corresponding path program 6 times [2024-06-21 19:00:53,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:00:53,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184677189] [2024-06-21 19:00:53,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:00:53,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:00:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:00:55,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:00:55,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:00:55,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184677189] [2024-06-21 19:00:55,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184677189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:00:55,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:00:55,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:00:55,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551657044] [2024-06-21 19:00:55,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:00:55,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:00:55,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:00:55,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:00:55,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:00:55,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 19:00:55,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 528 transitions, 4940 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:00:55,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:00:55,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 19:00:55,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:00:55,954 INFO L124 PetriNetUnfolderBase]: 905/1651 cut-off events. [2024-06-21 19:00:55,954 INFO L125 PetriNetUnfolderBase]: For 931091/931091 co-relation queries the response was YES. [2024-06-21 19:00:55,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16551 conditions, 1651 events. 905/1651 cut-off events. For 931091/931091 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 9808 event pairs, 56 based on Foata normal form. 1/1651 useless extension candidates. Maximal degree in co-relation 16279. Up to 1402 conditions per place. [2024-06-21 19:00:55,986 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 477 selfloop transitions, 60 changer transitions 0/540 dead transitions. [2024-06-21 19:00:55,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 540 transitions, 6042 flow [2024-06-21 19:00:55,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:00:55,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:00:55,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-21 19:00:55,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-21 19:00:55,987 INFO L175 Difference]: Start difference. First operand has 562 places, 528 transitions, 4940 flow. Second operand 10 states and 140 transitions. [2024-06-21 19:00:55,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 540 transitions, 6042 flow [2024-06-21 19:00:59,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 540 transitions, 5856 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-21 19:00:59,926 INFO L231 Difference]: Finished difference. Result has 565 places, 528 transitions, 4879 flow [2024-06-21 19:00:59,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4754, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4879, PETRI_PLACES=565, PETRI_TRANSITIONS=528} [2024-06-21 19:00:59,927 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 533 predicate places. [2024-06-21 19:00:59,927 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 528 transitions, 4879 flow [2024-06-21 19:00:59,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:00:59,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:00:59,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:00:59,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-21 19:00:59,927 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:00:59,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:00:59,927 INFO L85 PathProgramCache]: Analyzing trace with hash -2042102029, now seen corresponding path program 12 times [2024-06-21 19:00:59,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:00:59,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982010715] [2024-06-21 19:00:59,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:00:59,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:00:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:01:01,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:01:01,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:01:01,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982010715] [2024-06-21 19:01:01,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982010715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:01:01,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:01:01,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:01:01,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526927046] [2024-06-21 19:01:01,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:01:01,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:01:01,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:01:01,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:01:01,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:01:01,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 19:01:01,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 528 transitions, 4879 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:01,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:01:01,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 19:01:01,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:01:02,093 INFO L124 PetriNetUnfolderBase]: 908/1656 cut-off events. [2024-06-21 19:01:02,093 INFO L125 PetriNetUnfolderBase]: For 938673/938673 co-relation queries the response was YES. [2024-06-21 19:01:02,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16604 conditions, 1656 events. 908/1656 cut-off events. For 938673/938673 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 9849 event pairs, 46 based on Foata normal form. 1/1656 useless extension candidates. Maximal degree in co-relation 16331. Up to 1161 conditions per place. [2024-06-21 19:01:02,117 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 415 selfloop transitions, 126 changer transitions 0/544 dead transitions. [2024-06-21 19:01:02,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 544 transitions, 6973 flow [2024-06-21 19:01:02,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:01:02,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:01:02,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-21 19:01:02,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45151515151515154 [2024-06-21 19:01:02,118 INFO L175 Difference]: Start difference. First operand has 565 places, 528 transitions, 4879 flow. Second operand 10 states and 149 transitions. [2024-06-21 19:01:02,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 544 transitions, 6973 flow [2024-06-21 19:01:06,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 544 transitions, 6820 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-21 19:01:06,263 INFO L231 Difference]: Finished difference. Result has 566 places, 530 transitions, 5020 flow [2024-06-21 19:01:06,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4726, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5020, PETRI_PLACES=566, PETRI_TRANSITIONS=530} [2024-06-21 19:01:06,264 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 534 predicate places. [2024-06-21 19:01:06,264 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 530 transitions, 5020 flow [2024-06-21 19:01:06,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:06,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:01:06,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:01:06,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-21 19:01:06,264 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:01:06,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:01:06,264 INFO L85 PathProgramCache]: Analyzing trace with hash 516209247, now seen corresponding path program 1 times [2024-06-21 19:01:06,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:01:06,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692717981] [2024-06-21 19:01:06,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:01:06,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:01:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:01:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:01:08,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:01:08,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692717981] [2024-06-21 19:01:08,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692717981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:01:08,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:01:08,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:01:08,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204650342] [2024-06-21 19:01:08,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:01:08,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:01:08,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:01:08,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:01:08,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:01:08,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-21 19:01:08,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 530 transitions, 5020 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:08,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:01:08,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-21 19:01:08,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:01:08,887 INFO L124 PetriNetUnfolderBase]: 866/1613 cut-off events. [2024-06-21 19:01:08,887 INFO L125 PetriNetUnfolderBase]: For 998607/998608 co-relation queries the response was YES. [2024-06-21 19:01:08,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16549 conditions, 1613 events. 866/1613 cut-off events. For 998607/998608 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 9794 event pairs, 74 based on Foata normal form. 3/1610 useless extension candidates. Maximal degree in co-relation 16275. Up to 1345 conditions per place. [2024-06-21 19:01:08,916 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 457 selfloop transitions, 27 changer transitions 0/544 dead transitions. [2024-06-21 19:01:08,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 576 places, 544 transitions, 6050 flow [2024-06-21 19:01:08,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:01:08,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:01:08,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-21 19:01:08,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4132231404958678 [2024-06-21 19:01:08,917 INFO L175 Difference]: Start difference. First operand has 566 places, 530 transitions, 5020 flow. Second operand 11 states and 150 transitions. [2024-06-21 19:01:08,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 576 places, 544 transitions, 6050 flow [2024-06-21 19:01:12,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 544 transitions, 5691 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-21 19:01:12,662 INFO L231 Difference]: Finished difference. Result has 568 places, 531 transitions, 4753 flow [2024-06-21 19:01:12,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4661, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4753, PETRI_PLACES=568, PETRI_TRANSITIONS=531} [2024-06-21 19:01:12,663 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 536 predicate places. [2024-06-21 19:01:12,663 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 531 transitions, 4753 flow [2024-06-21 19:01:12,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:12,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:01:12,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:01:12,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-21 19:01:12,663 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:01:12,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:01:12,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1812116749, now seen corresponding path program 13 times [2024-06-21 19:01:12,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:01:12,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928067622] [2024-06-21 19:01:12,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:01:12,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:01:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:01:14,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:01:14,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:01:14,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928067622] [2024-06-21 19:01:14,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928067622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:01:14,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:01:14,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:01:14,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921873925] [2024-06-21 19:01:14,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:01:14,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:01:14,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:01:14,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:01:14,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:01:14,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 19:01:14,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 531 transitions, 4753 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:14,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:01:14,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 19:01:14,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:01:14,982 INFO L124 PetriNetUnfolderBase]: 910/1661 cut-off events. [2024-06-21 19:01:14,982 INFO L125 PetriNetUnfolderBase]: For 926614/926614 co-relation queries the response was YES. [2024-06-21 19:01:15,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16333 conditions, 1661 events. 910/1661 cut-off events. For 926614/926614 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 9882 event pairs, 46 based on Foata normal form. 1/1661 useless extension candidates. Maximal degree in co-relation 16057. Up to 1167 conditions per place. [2024-06-21 19:01:15,013 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 358 selfloop transitions, 183 changer transitions 0/544 dead transitions. [2024-06-21 19:01:15,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 544 transitions, 6341 flow [2024-06-21 19:01:15,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:01:15,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:01:15,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-21 19:01:15,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-21 19:01:15,014 INFO L175 Difference]: Start difference. First operand has 568 places, 531 transitions, 4753 flow. Second operand 10 states and 143 transitions. [2024-06-21 19:01:15,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 544 transitions, 6341 flow [2024-06-21 19:01:18,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 544 transitions, 6235 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-21 19:01:18,582 INFO L231 Difference]: Finished difference. Result has 569 places, 531 transitions, 5018 flow [2024-06-21 19:01:18,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4647, PETRI_DIFFERENCE_MINUEND_PLACES=559, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5018, PETRI_PLACES=569, PETRI_TRANSITIONS=531} [2024-06-21 19:01:18,582 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 537 predicate places. [2024-06-21 19:01:18,582 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 531 transitions, 5018 flow [2024-06-21 19:01:18,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:18,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:01:18,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:01:18,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-21 19:01:18,583 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:01:18,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:01:18,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1812413667, now seen corresponding path program 19 times [2024-06-21 19:01:18,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:01:18,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663364566] [2024-06-21 19:01:18,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:01:18,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:01:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:01:19,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:01:19,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:01:19,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663364566] [2024-06-21 19:01:19,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663364566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:01:19,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:01:19,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:01:19,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42214346] [2024-06-21 19:01:19,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:01:19,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:01:19,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:01:19,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:01:19,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:01:20,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 19:01:20,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 531 transitions, 5018 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) [2024-06-21 19:01:20,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:01:20,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 19:01:20,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:01:20,848 INFO L124 PetriNetUnfolderBase]: 908/1658 cut-off events. [2024-06-21 19:01:20,848 INFO L125 PetriNetUnfolderBase]: For 905630/905630 co-relation queries the response was YES. [2024-06-21 19:01:20,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16338 conditions, 1658 events. 908/1658 cut-off events. For 905630/905630 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 9877 event pairs, 54 based on Foata normal form. 1/1658 useless extension candidates. Maximal degree in co-relation 16062. Up to 1280 conditions per place. [2024-06-21 19:01:20,880 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 409 selfloop transitions, 131 changer transitions 0/543 dead transitions. [2024-06-21 19:01:20,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 543 transitions, 6604 flow [2024-06-21 19:01:20,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:01:20,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:01:20,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-21 19:01:20,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-21 19:01:20,881 INFO L175 Difference]: Start difference. First operand has 569 places, 531 transitions, 5018 flow. Second operand 12 states and 156 transitions. [2024-06-21 19:01:20,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 543 transitions, 6604 flow [2024-06-21 19:01:24,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 543 transitions, 6257 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-21 19:01:24,889 INFO L231 Difference]: Finished difference. Result has 573 places, 531 transitions, 4938 flow [2024-06-21 19:01:24,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4671, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4938, PETRI_PLACES=573, PETRI_TRANSITIONS=531} [2024-06-21 19:01:24,889 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 541 predicate places. [2024-06-21 19:01:24,889 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 531 transitions, 4938 flow [2024-06-21 19:01:24,889 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) [2024-06-21 19:01:24,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:01:24,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:01:24,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-21 19:01:24,890 INFO L420 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:01:24,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:01:24,890 INFO L85 PathProgramCache]: Analyzing trace with hash -2042102277, now seen corresponding path program 20 times [2024-06-21 19:01:24,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:01:24,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182069250] [2024-06-21 19:01:24,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:01:24,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:01:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:01:26,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:01:26,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:01:26,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182069250] [2024-06-21 19:01:26,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182069250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:01:26,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:01:26,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:01:26,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259607673] [2024-06-21 19:01:26,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:01:26,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:01:26,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:01:26,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:01:26,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:01:26,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 19:01:26,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 531 transitions, 4938 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) [2024-06-21 19:01:26,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:01:26,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 19:01:26,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:01:27,088 INFO L124 PetriNetUnfolderBase]: 906/1655 cut-off events. [2024-06-21 19:01:27,088 INFO L125 PetriNetUnfolderBase]: For 884357/884357 co-relation queries the response was YES. [2024-06-21 19:01:27,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16016 conditions, 1655 events. 906/1655 cut-off events. For 884357/884357 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 9869 event pairs, 54 based on Foata normal form. 1/1655 useless extension candidates. Maximal degree in co-relation 15738. Up to 1278 conditions per place. [2024-06-21 19:01:27,118 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 427 selfloop transitions, 112 changer transitions 0/542 dead transitions. [2024-06-21 19:01:27,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 542 transitions, 6042 flow [2024-06-21 19:01:27,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:01:27,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:01:27,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-21 19:01:27,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-21 19:01:27,119 INFO L175 Difference]: Start difference. First operand has 573 places, 531 transitions, 4938 flow. Second operand 12 states and 159 transitions. [2024-06-21 19:01:27,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 542 transitions, 6042 flow [2024-06-21 19:01:30,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 542 transitions, 5779 flow, removed 21 selfloop flow, removed 12 redundant places. [2024-06-21 19:01:30,332 INFO L231 Difference]: Finished difference. Result has 573 places, 531 transitions, 4904 flow [2024-06-21 19:01:30,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4675, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4904, PETRI_PLACES=573, PETRI_TRANSITIONS=531} [2024-06-21 19:01:30,333 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 541 predicate places. [2024-06-21 19:01:30,333 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 531 transitions, 4904 flow [2024-06-21 19:01:30,333 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) [2024-06-21 19:01:30,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:01:30,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:01:30,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-21 19:01:30,333 INFO L420 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:01:30,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:01:30,333 INFO L85 PathProgramCache]: Analyzing trace with hash -810281533, now seen corresponding path program 14 times [2024-06-21 19:01:30,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:01:30,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148483639] [2024-06-21 19:01:30,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:01:30,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:01:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:01:31,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:01:31,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:01:31,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148483639] [2024-06-21 19:01:31,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148483639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:01:31,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:01:31,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:01:31,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228825040] [2024-06-21 19:01:31,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:01:31,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:01:31,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:01:31,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:01:31,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:01:31,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 19:01:31,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 531 transitions, 4904 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:31,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:01:31,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 19:01:31,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:01:32,457 INFO L124 PetriNetUnfolderBase]: 904/1652 cut-off events. [2024-06-21 19:01:32,457 INFO L125 PetriNetUnfolderBase]: For 862226/862226 co-relation queries the response was YES. [2024-06-21 19:01:32,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15734 conditions, 1652 events. 904/1652 cut-off events. For 862226/862226 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 9823 event pairs, 46 based on Foata normal form. 1/1652 useless extension candidates. Maximal degree in co-relation 15455. Up to 1159 conditions per place. [2024-06-21 19:01:32,488 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 411 selfloop transitions, 130 changer transitions 0/544 dead transitions. [2024-06-21 19:01:32,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 544 transitions, 6498 flow [2024-06-21 19:01:32,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:01:32,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:01:32,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-21 19:01:32,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-06-21 19:01:32,489 INFO L175 Difference]: Start difference. First operand has 573 places, 531 transitions, 4904 flow. Second operand 10 states and 147 transitions. [2024-06-21 19:01:32,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 544 transitions, 6498 flow [2024-06-21 19:01:37,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 544 transitions, 6168 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-06-21 19:01:37,249 INFO L231 Difference]: Finished difference. Result has 571 places, 531 transitions, 4839 flow [2024-06-21 19:01:37,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4574, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4839, PETRI_PLACES=571, PETRI_TRANSITIONS=531} [2024-06-21 19:01:37,249 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 539 predicate places. [2024-06-21 19:01:37,250 INFO L495 AbstractCegarLoop]: Abstraction has has 571 places, 531 transitions, 4839 flow [2024-06-21 19:01:37,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:37,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:01:37,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:01:37,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-21 19:01:37,250 INFO L420 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:01:37,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:01:37,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1812413419, now seen corresponding path program 15 times [2024-06-21 19:01:37,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:01:37,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152896146] [2024-06-21 19:01:37,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:01:37,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:01:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:01:38,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:01:38,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:01:38,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152896146] [2024-06-21 19:01:38,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152896146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:01:38,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:01:38,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:01:38,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287822308] [2024-06-21 19:01:38,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:01:38,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:01:38,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:01:38,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:01:38,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:01:38,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 19:01:38,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 531 transitions, 4839 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:38,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:01:38,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 19:01:38,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:01:39,302 INFO L124 PetriNetUnfolderBase]: 902/1649 cut-off events. [2024-06-21 19:01:39,302 INFO L125 PetriNetUnfolderBase]: For 839932/839932 co-relation queries the response was YES. [2024-06-21 19:01:39,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15475 conditions, 1649 events. 902/1649 cut-off events. For 839932/839932 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 9807 event pairs, 46 based on Foata normal form. 1/1649 useless extension candidates. Maximal degree in co-relation 15196. Up to 1157 conditions per place. [2024-06-21 19:01:39,331 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 386 selfloop transitions, 154 changer transitions 0/543 dead transitions. [2024-06-21 19:01:39,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 543 transitions, 5947 flow [2024-06-21 19:01:39,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:01:39,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:01:39,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-21 19:01:39,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-21 19:01:39,332 INFO L175 Difference]: Start difference. First operand has 571 places, 531 transitions, 4839 flow. Second operand 10 states and 143 transitions. [2024-06-21 19:01:39,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 543 transitions, 5947 flow [2024-06-21 19:01:43,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 543 transitions, 5587 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-21 19:01:43,571 INFO L231 Difference]: Finished difference. Result has 571 places, 531 transitions, 4793 flow [2024-06-21 19:01:43,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4479, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4793, PETRI_PLACES=571, PETRI_TRANSITIONS=531} [2024-06-21 19:01:43,572 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 539 predicate places. [2024-06-21 19:01:43,572 INFO L495 AbstractCegarLoop]: Abstraction has has 571 places, 531 transitions, 4793 flow [2024-06-21 19:01:43,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:43,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:01:43,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:01:43,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-21 19:01:43,572 INFO L420 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:01:43,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:01:43,572 INFO L85 PathProgramCache]: Analyzing trace with hash 763488441, now seen corresponding path program 6 times [2024-06-21 19:01:43,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:01:43,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060967699] [2024-06-21 19:01:43,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:01:43,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:01:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:01:45,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:01:45,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:01:45,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060967699] [2024-06-21 19:01:45,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060967699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:01:45,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:01:45,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:01:45,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158330926] [2024-06-21 19:01:45,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:01:45,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:01:45,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:01:45,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:01:45,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:01:45,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 19:01:45,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 531 transitions, 4793 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:45,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:01:45,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 19:01:45,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:01:45,879 INFO L124 PetriNetUnfolderBase]: 857/1608 cut-off events. [2024-06-21 19:01:45,879 INFO L125 PetriNetUnfolderBase]: For 878066/878066 co-relation queries the response was YES. [2024-06-21 19:01:45,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15328 conditions, 1608 events. 857/1608 cut-off events. For 878066/878066 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 9817 event pairs, 62 based on Foata normal form. 2/1609 useless extension candidates. Maximal degree in co-relation 15048. Up to 1169 conditions per place. [2024-06-21 19:01:45,908 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 385 selfloop transitions, 83 changer transitions 0/542 dead transitions. [2024-06-21 19:01:45,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 542 transitions, 5803 flow [2024-06-21 19:01:45,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:01:45,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:01:45,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 19:01:45,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022038567493113 [2024-06-21 19:01:45,910 INFO L175 Difference]: Start difference. First operand has 571 places, 531 transitions, 4793 flow. Second operand 11 states and 146 transitions. [2024-06-21 19:01:45,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 542 transitions, 5803 flow [2024-06-21 19:01:50,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 542 transitions, 5464 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-21 19:01:50,768 INFO L231 Difference]: Finished difference. Result has 572 places, 532 transitions, 4678 flow [2024-06-21 19:01:50,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4454, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4678, PETRI_PLACES=572, PETRI_TRANSITIONS=532} [2024-06-21 19:01:50,768 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 540 predicate places. [2024-06-21 19:01:50,768 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 532 transitions, 4678 flow [2024-06-21 19:01:50,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:50,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:01:50,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:01:50,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-21 19:01:50,768 INFO L420 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:01:50,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:01:50,769 INFO L85 PathProgramCache]: Analyzing trace with hash -437782873, now seen corresponding path program 16 times [2024-06-21 19:01:50,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:01:50,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715765959] [2024-06-21 19:01:50,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:01:50,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:01:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:01:52,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:01:52,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:01:52,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715765959] [2024-06-21 19:01:52,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715765959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:01:52,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:01:52,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:01:52,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770410039] [2024-06-21 19:01:52,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:01:52,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:01:52,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:01:52,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:01:52,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:01:52,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 19:01:52,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 532 transitions, 4678 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:52,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:01:52,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 19:01:52,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:01:52,888 INFO L124 PetriNetUnfolderBase]: 924/1684 cut-off events. [2024-06-21 19:01:52,888 INFO L125 PetriNetUnfolderBase]: For 947717/947717 co-relation queries the response was YES. [2024-06-21 19:01:52,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16440 conditions, 1684 events. 924/1684 cut-off events. For 947717/947717 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 10011 event pairs, 49 based on Foata normal form. 1/1684 useless extension candidates. Maximal degree in co-relation 16158. Up to 998 conditions per place. [2024-06-21 19:01:52,919 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 393 selfloop transitions, 160 changer transitions 0/556 dead transitions. [2024-06-21 19:01:52,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 556 transitions, 7976 flow [2024-06-21 19:01:52,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:01:52,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:01:52,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-21 19:01:52,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-06-21 19:01:52,920 INFO L175 Difference]: Start difference. First operand has 572 places, 532 transitions, 4678 flow. Second operand 10 states and 155 transitions. [2024-06-21 19:01:52,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 556 transitions, 7976 flow [2024-06-21 19:01:57,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 556 transitions, 7762 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-21 19:01:57,391 INFO L231 Difference]: Finished difference. Result has 573 places, 542 transitions, 5003 flow [2024-06-21 19:01:57,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4464, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5003, PETRI_PLACES=573, PETRI_TRANSITIONS=542} [2024-06-21 19:01:57,391 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 541 predicate places. [2024-06-21 19:01:57,391 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 542 transitions, 5003 flow [2024-06-21 19:01:57,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:57,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:01:57,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:01:57,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-21 19:01:57,392 INFO L420 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:01:57,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:01:57,392 INFO L85 PathProgramCache]: Analyzing trace with hash 763493401, now seen corresponding path program 21 times [2024-06-21 19:01:57,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:01:57,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605458754] [2024-06-21 19:01:57,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:01:57,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:01:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:01:59,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:01:59,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:01:59,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605458754] [2024-06-21 19:01:59,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605458754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:01:59,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:01:59,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:01:59,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156429494] [2024-06-21 19:01:59,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:01:59,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:01:59,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:01:59,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:01:59,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:01:59,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 19:01:59,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 542 transitions, 5003 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) [2024-06-21 19:01:59,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:01:59,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 19:01:59,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:00,402 INFO L124 PetriNetUnfolderBase]: 932/1699 cut-off events. [2024-06-21 19:02:00,402 INFO L125 PetriNetUnfolderBase]: For 982201/982201 co-relation queries the response was YES. [2024-06-21 19:02:00,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16979 conditions, 1699 events. 932/1699 cut-off events. For 982201/982201 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 10148 event pairs, 64 based on Foata normal form. 1/1699 useless extension candidates. Maximal degree in co-relation 16697. Up to 869 conditions per place. [2024-06-21 19:02:00,434 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 341 selfloop transitions, 216 changer transitions 0/560 dead transitions. [2024-06-21 19:02:00,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 560 transitions, 7309 flow [2024-06-21 19:02:00,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:02:00,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:02:00,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-21 19:02:00,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2024-06-21 19:02:00,435 INFO L175 Difference]: Start difference. First operand has 573 places, 542 transitions, 5003 flow. Second operand 12 states and 158 transitions. [2024-06-21 19:02:00,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 560 transitions, 7309 flow [2024-06-21 19:02:04,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 560 transitions, 7011 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-21 19:02:04,614 INFO L231 Difference]: Finished difference. Result has 581 places, 548 transitions, 5332 flow [2024-06-21 19:02:04,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4705, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5332, PETRI_PLACES=581, PETRI_TRANSITIONS=548} [2024-06-21 19:02:04,614 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 549 predicate places. [2024-06-21 19:02:04,614 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 548 transitions, 5332 flow [2024-06-21 19:02:04,614 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) [2024-06-21 19:02:04,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:04,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:04,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2024-06-21 19:02:04,614 INFO L420 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:02:04,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:04,615 INFO L85 PathProgramCache]: Analyzing trace with hash 991804929, now seen corresponding path program 17 times [2024-06-21 19:02:04,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:04,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146679178] [2024-06-21 19:02:04,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:04,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:06,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:06,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:06,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146679178] [2024-06-21 19:02:06,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146679178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:06,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:06,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:02:06,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287251702] [2024-06-21 19:02:06,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:06,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:02:06,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:06,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:02:06,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:02:06,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 19:02:06,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 548 transitions, 5332 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:06,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:06,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 19:02:06,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:06,946 INFO L124 PetriNetUnfolderBase]: 945/1718 cut-off events. [2024-06-21 19:02:06,947 INFO L125 PetriNetUnfolderBase]: For 1051183/1051183 co-relation queries the response was YES. [2024-06-21 19:02:06,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17814 conditions, 1718 events. 945/1718 cut-off events. For 1051183/1051183 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 10257 event pairs, 55 based on Foata normal form. 1/1718 useless extension candidates. Maximal degree in co-relation 17530. Up to 1027 conditions per place. [2024-06-21 19:02:06,973 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 403 selfloop transitions, 163 changer transitions 0/569 dead transitions. [2024-06-21 19:02:06,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 569 transitions, 9070 flow [2024-06-21 19:02:06,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:02:06,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:02:06,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-21 19:02:06,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47878787878787876 [2024-06-21 19:02:06,975 INFO L175 Difference]: Start difference. First operand has 581 places, 548 transitions, 5332 flow. Second operand 10 states and 158 transitions. [2024-06-21 19:02:06,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 569 transitions, 9070 flow [2024-06-21 19:02:11,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 583 places, 569 transitions, 8876 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-21 19:02:11,687 INFO L231 Difference]: Finished difference. Result has 584 places, 554 transitions, 5583 flow [2024-06-21 19:02:11,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5138, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5583, PETRI_PLACES=584, PETRI_TRANSITIONS=554} [2024-06-21 19:02:11,688 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 552 predicate places. [2024-06-21 19:02:11,688 INFO L495 AbstractCegarLoop]: Abstraction has has 584 places, 554 transitions, 5583 flow [2024-06-21 19:02:11,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:11,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:11,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:11,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2024-06-21 19:02:11,688 INFO L420 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:02:11,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:11,689 INFO L85 PathProgramCache]: Analyzing trace with hash 763666381, now seen corresponding path program 22 times [2024-06-21 19:02:11,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:11,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561668935] [2024-06-21 19:02:11,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:11,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:13,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:13,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:13,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561668935] [2024-06-21 19:02:13,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561668935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:13,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:13,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:02:13,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621774446] [2024-06-21 19:02:13,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:13,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:02:13,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:13,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:02:13,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:02:13,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 19:02:13,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 554 transitions, 5583 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) [2024-06-21 19:02:13,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:13,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 19:02:13,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:14,771 INFO L124 PetriNetUnfolderBase]: 953/1735 cut-off events. [2024-06-21 19:02:14,771 INFO L125 PetriNetUnfolderBase]: For 1089539/1089539 co-relation queries the response was YES. [2024-06-21 19:02:14,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18396 conditions, 1735 events. 953/1735 cut-off events. For 1089539/1089539 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 10364 event pairs, 64 based on Foata normal form. 1/1735 useless extension candidates. Maximal degree in co-relation 18111. Up to 900 conditions per place. [2024-06-21 19:02:14,802 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 360 selfloop transitions, 208 changer transitions 0/571 dead transitions. [2024-06-21 19:02:14,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 571 transitions, 8325 flow [2024-06-21 19:02:14,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:02:14,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:02:14,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-21 19:02:14,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065656565656566 [2024-06-21 19:02:14,803 INFO L175 Difference]: Start difference. First operand has 584 places, 554 transitions, 5583 flow. Second operand 12 states and 161 transitions. [2024-06-21 19:02:14,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 571 transitions, 8325 flow [2024-06-21 19:02:19,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 590 places, 571 transitions, 7995 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-21 19:02:19,944 INFO L231 Difference]: Finished difference. Result has 591 places, 558 transitions, 5770 flow [2024-06-21 19:02:19,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5253, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5770, PETRI_PLACES=591, PETRI_TRANSITIONS=558} [2024-06-21 19:02:19,944 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 559 predicate places. [2024-06-21 19:02:19,944 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 558 transitions, 5770 flow [2024-06-21 19:02:19,944 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) [2024-06-21 19:02:19,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:19,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:19,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2024-06-21 19:02:19,945 INFO L420 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:02:19,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:19,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1580263963, now seen corresponding path program 7 times [2024-06-21 19:02:19,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:19,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648275572] [2024-06-21 19:02:19,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:19,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:21,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:21,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:21,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648275572] [2024-06-21 19:02:21,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648275572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:21,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:21,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:02:21,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047943306] [2024-06-21 19:02:21,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:21,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:02:21,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:21,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:02:21,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:02:22,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 19:02:22,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 558 transitions, 5770 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) [2024-06-21 19:02:22,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:22,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 19:02:22,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:22,875 INFO L124 PetriNetUnfolderBase]: 961/1748 cut-off events. [2024-06-21 19:02:22,875 INFO L125 PetriNetUnfolderBase]: For 1131965/1131965 co-relation queries the response was YES. [2024-06-21 19:02:22,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18896 conditions, 1748 events. 961/1748 cut-off events. For 1131965/1131965 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 10454 event pairs, 135 based on Foata normal form. 1/1748 useless extension candidates. Maximal degree in co-relation 18609. Up to 1610 conditions per place. [2024-06-21 19:02:22,902 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 547 selfloop transitions, 23 changer transitions 0/573 dead transitions. [2024-06-21 19:02:22,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 573 transitions, 7542 flow [2024-06-21 19:02:22,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:02:22,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:02:22,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-21 19:02:22,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34595959595959597 [2024-06-21 19:02:22,903 INFO L175 Difference]: Start difference. First operand has 591 places, 558 transitions, 5770 flow. Second operand 12 states and 137 transitions. [2024-06-21 19:02:22,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 573 transitions, 7542 flow [2024-06-21 19:02:29,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 573 transitions, 7122 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-21 19:02:29,063 INFO L231 Difference]: Finished difference. Result has 595 places, 562 transitions, 5517 flow [2024-06-21 19:02:29,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5350, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5517, PETRI_PLACES=595, PETRI_TRANSITIONS=562} [2024-06-21 19:02:29,063 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 563 predicate places. [2024-06-21 19:02:29,064 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 562 transitions, 5517 flow [2024-06-21 19:02:29,064 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) [2024-06-21 19:02:29,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:29,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:29,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2024-06-21 19:02:29,064 INFO L420 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:02:29,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:29,064 INFO L85 PathProgramCache]: Analyzing trace with hash 999848499, now seen corresponding path program 18 times [2024-06-21 19:02:29,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:29,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959003760] [2024-06-21 19:02:29,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:29,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:30,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:30,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:30,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959003760] [2024-06-21 19:02:30,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959003760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:30,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:30,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:02:30,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917668356] [2024-06-21 19:02:30,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:30,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:02:30,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:30,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:02:30,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:02:30,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 19:02:30,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 562 transitions, 5517 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:30,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:30,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 19:02:30,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:31,394 INFO L124 PetriNetUnfolderBase]: 959/1745 cut-off events. [2024-06-21 19:02:31,394 INFO L125 PetriNetUnfolderBase]: For 1107725/1107725 co-relation queries the response was YES. [2024-06-21 19:02:31,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18303 conditions, 1745 events. 959/1745 cut-off events. For 1107725/1107725 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 10463 event pairs, 55 based on Foata normal form. 1/1745 useless extension candidates. Maximal degree in co-relation 18015. Up to 1051 conditions per place. [2024-06-21 19:02:31,429 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 405 selfloop transitions, 167 changer transitions 0/575 dead transitions. [2024-06-21 19:02:31,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 575 transitions, 8183 flow [2024-06-21 19:02:31,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:02:31,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:02:31,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-21 19:02:31,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636363636363636 [2024-06-21 19:02:31,430 INFO L175 Difference]: Start difference. First operand has 595 places, 562 transitions, 5517 flow. Second operand 10 states and 153 transitions. [2024-06-21 19:02:31,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 575 transitions, 8183 flow [2024-06-21 19:02:36,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 575 transitions, 8071 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-21 19:02:36,595 INFO L231 Difference]: Finished difference. Result has 597 places, 562 transitions, 5744 flow [2024-06-21 19:02:36,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5405, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5744, PETRI_PLACES=597, PETRI_TRANSITIONS=562} [2024-06-21 19:02:36,596 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 565 predicate places. [2024-06-21 19:02:36,596 INFO L495 AbstractCegarLoop]: Abstraction has has 597 places, 562 transitions, 5744 flow [2024-06-21 19:02:36,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:36,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:36,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:36,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2024-06-21 19:02:36,596 INFO L420 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:02:36,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:36,597 INFO L85 PathProgramCache]: Analyzing trace with hash -437782563, now seen corresponding path program 8 times [2024-06-21 19:02:36,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:36,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819786686] [2024-06-21 19:02:36,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:36,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:38,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:38,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:38,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819786686] [2024-06-21 19:02:38,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819786686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:38,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:38,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:02:38,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035533983] [2024-06-21 19:02:38,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:38,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:02:38,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:38,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:02:38,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:02:38,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 19:02:38,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 562 transitions, 5744 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) [2024-06-21 19:02:38,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:38,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 19:02:38,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:39,189 INFO L124 PetriNetUnfolderBase]: 962/1747 cut-off events. [2024-06-21 19:02:39,189 INFO L125 PetriNetUnfolderBase]: For 1116987/1116987 co-relation queries the response was YES. [2024-06-21 19:02:39,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18647 conditions, 1747 events. 962/1747 cut-off events. For 1116987/1116987 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 10462 event pairs, 58 based on Foata normal form. 1/1747 useless extension candidates. Maximal degree in co-relation 18358. Up to 1397 conditions per place. [2024-06-21 19:02:39,222 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 478 selfloop transitions, 93 changer transitions 0/574 dead transitions. [2024-06-21 19:02:39,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 574 transitions, 6968 flow [2024-06-21 19:02:39,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:02:39,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:02:39,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-21 19:02:39,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.418732782369146 [2024-06-21 19:02:39,223 INFO L175 Difference]: Start difference. First operand has 597 places, 562 transitions, 5744 flow. Second operand 11 states and 152 transitions. [2024-06-21 19:02:39,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 574 transitions, 6968 flow [2024-06-21 19:02:44,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 574 transitions, 6636 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-21 19:02:44,438 INFO L231 Difference]: Finished difference. Result has 600 places, 564 transitions, 5667 flow [2024-06-21 19:02:44,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5412, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5667, PETRI_PLACES=600, PETRI_TRANSITIONS=564} [2024-06-21 19:02:44,438 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 568 predicate places. [2024-06-21 19:02:44,439 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 564 transitions, 5667 flow [2024-06-21 19:02:44,439 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) [2024-06-21 19:02:44,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:44,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:44,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2024-06-21 19:02:44,439 INFO L420 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:02:44,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:44,440 INFO L85 PathProgramCache]: Analyzing trace with hash -673966851, now seen corresponding path program 23 times [2024-06-21 19:02:44,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:44,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704305821] [2024-06-21 19:02:44,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:44,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:46,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:46,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:46,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704305821] [2024-06-21 19:02:46,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704305821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:46,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:46,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:02:46,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53841352] [2024-06-21 19:02:46,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:46,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:02:46,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:46,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:02:46,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:02:46,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 19:02:46,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 564 transitions, 5667 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) [2024-06-21 19:02:46,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:46,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 19:02:46,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:47,149 INFO L124 PetriNetUnfolderBase]: 960/1747 cut-off events. [2024-06-21 19:02:47,150 INFO L125 PetriNetUnfolderBase]: For 1093219/1093219 co-relation queries the response was YES. [2024-06-21 19:02:47,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18274 conditions, 1747 events. 960/1747 cut-off events. For 1093219/1093219 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 10464 event pairs, 64 based on Foata normal form. 1/1747 useless extension candidates. Maximal degree in co-relation 17983. Up to 913 conditions per place. [2024-06-21 19:02:47,185 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 364 selfloop transitions, 209 changer transitions 0/576 dead transitions. [2024-06-21 19:02:47,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 576 transitions, 7843 flow [2024-06-21 19:02:47,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:02:47,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:02:47,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-21 19:02:47,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-21 19:02:47,186 INFO L175 Difference]: Start difference. First operand has 600 places, 564 transitions, 5667 flow. Second operand 12 states and 159 transitions. [2024-06-21 19:02:47,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 576 transitions, 7843 flow [2024-06-21 19:02:52,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 602 places, 576 transitions, 7566 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-21 19:02:52,277 INFO L231 Difference]: Finished difference. Result has 603 places, 564 transitions, 5813 flow [2024-06-21 19:02:52,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5390, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5813, PETRI_PLACES=603, PETRI_TRANSITIONS=564} [2024-06-21 19:02:52,277 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 571 predicate places. [2024-06-21 19:02:52,277 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 564 transitions, 5813 flow [2024-06-21 19:02:52,277 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) [2024-06-21 19:02:52,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:52,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:52,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2024-06-21 19:02:52,278 INFO L420 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:02:52,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:52,278 INFO L85 PathProgramCache]: Analyzing trace with hash 380280507, now seen corresponding path program 2 times [2024-06-21 19:02:52,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:52,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005736414] [2024-06-21 19:02:52,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:52,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:54,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:54,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:54,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005736414] [2024-06-21 19:02:54,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005736414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:54,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:54,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:02:54,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969369327] [2024-06-21 19:02:54,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:54,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:02:54,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:54,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:02:54,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:02:54,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-21 19:02:54,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 564 transitions, 5813 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:54,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:54,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-21 19:02:54,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:54,966 INFO L124 PetriNetUnfolderBase]: 915/1701 cut-off events. [2024-06-21 19:02:54,966 INFO L125 PetriNetUnfolderBase]: For 1162664/1162665 co-relation queries the response was YES. [2024-06-21 19:02:54,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18237 conditions, 1701 events. 915/1701 cut-off events. For 1162664/1162665 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 10462 event pairs, 75 based on Foata normal form. 3/1699 useless extension candidates. Maximal degree in co-relation 17945. Up to 1382 conditions per place. [2024-06-21 19:02:54,999 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 467 selfloop transitions, 46 changer transitions 0/576 dead transitions. [2024-06-21 19:02:54,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 576 transitions, 6897 flow [2024-06-21 19:02:55,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:02:55,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:02:55,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 153 transitions. [2024-06-21 19:02:55,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4214876033057851 [2024-06-21 19:02:55,000 INFO L175 Difference]: Start difference. First operand has 603 places, 564 transitions, 5813 flow. Second operand 11 states and 153 transitions. [2024-06-21 19:02:55,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 576 transitions, 6897 flow [2024-06-21 19:03:00,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 602 places, 576 transitions, 6474 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-21 19:03:00,576 INFO L231 Difference]: Finished difference. Result has 603 places, 565 transitions, 5522 flow [2024-06-21 19:03:00,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5390, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5522, PETRI_PLACES=603, PETRI_TRANSITIONS=565} [2024-06-21 19:03:00,576 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 571 predicate places. [2024-06-21 19:03:00,576 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 565 transitions, 5522 flow [2024-06-21 19:03:00,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:03:00,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:00,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:00,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2024-06-21 19:03:00,576 INFO L420 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:03:00,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:00,577 INFO L85 PathProgramCache]: Analyzing trace with hash 379981605, now seen corresponding path program 9 times [2024-06-21 19:03:00,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:00,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61187292] [2024-06-21 19:03:00,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:00,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:02,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:02,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:02,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61187292] [2024-06-21 19:03:02,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61187292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:02,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:02,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:03:02,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336217533] [2024-06-21 19:03:02,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:02,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:03:02,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:02,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:03:02,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:03:02,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 19:03:02,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 565 transitions, 5522 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) [2024-06-21 19:03:02,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:02,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 19:03:02,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:03,163 INFO L124 PetriNetUnfolderBase]: 967/1757 cut-off events. [2024-06-21 19:03:03,164 INFO L125 PetriNetUnfolderBase]: For 1111156/1111156 co-relation queries the response was YES. [2024-06-21 19:03:03,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18316 conditions, 1757 events. 967/1757 cut-off events. For 1111156/1111156 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 10567 event pairs, 58 based on Foata normal form. 1/1757 useless extension candidates. Maximal degree in co-relation 18023. Up to 1407 conditions per place. [2024-06-21 19:03:03,196 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 462 selfloop transitions, 112 changer transitions 0/577 dead transitions. [2024-06-21 19:03:03,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 577 transitions, 6756 flow [2024-06-21 19:03:03,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:03:03,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:03:03,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-21 19:03:03,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40771349862258954 [2024-06-21 19:03:03,197 INFO L175 Difference]: Start difference. First operand has 603 places, 565 transitions, 5522 flow. Second operand 11 states and 148 transitions. [2024-06-21 19:03:03,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 577 transitions, 6756 flow [2024-06-21 19:03:08,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 577 transitions, 6634 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 19:03:08,299 INFO L231 Difference]: Finished difference. Result has 605 places, 567 transitions, 5697 flow [2024-06-21 19:03:08,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5400, PETRI_DIFFERENCE_MINUEND_PLACES=594, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5697, PETRI_PLACES=605, PETRI_TRANSITIONS=567} [2024-06-21 19:03:08,300 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 573 predicate places. [2024-06-21 19:03:08,300 INFO L495 AbstractCegarLoop]: Abstraction has has 605 places, 567 transitions, 5697 flow [2024-06-21 19:03:08,300 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) [2024-06-21 19:03:08,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:08,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:08,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2024-06-21 19:03:08,300 INFO L420 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:03:08,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:08,301 INFO L85 PathProgramCache]: Analyzing trace with hash 763673139, now seen corresponding path program 19 times [2024-06-21 19:03:08,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:08,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785481757] [2024-06-21 19:03:08,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:08,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:09,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:09,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:09,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785481757] [2024-06-21 19:03:09,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785481757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:09,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:09,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:03:09,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566387587] [2024-06-21 19:03:09,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:09,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:03:09,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:09,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:03:09,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:03:09,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 19:03:09,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 567 transitions, 5697 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:03:09,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:09,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 19:03:09,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:10,468 INFO L124 PetriNetUnfolderBase]: 970/1763 cut-off events. [2024-06-21 19:03:10,469 INFO L125 PetriNetUnfolderBase]: For 1118971/1118971 co-relation queries the response was YES. [2024-06-21 19:03:10,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18493 conditions, 1763 events. 970/1763 cut-off events. For 1118971/1118971 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 10567 event pairs, 55 based on Foata normal form. 1/1763 useless extension candidates. Maximal degree in co-relation 18199. Up to 1070 conditions per place. [2024-06-21 19:03:10,506 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 390 selfloop transitions, 187 changer transitions 0/580 dead transitions. [2024-06-21 19:03:10,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 580 transitions, 7423 flow [2024-06-21 19:03:10,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:03:10,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:03:10,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-21 19:03:10,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4484848484848485 [2024-06-21 19:03:10,507 INFO L175 Difference]: Start difference. First operand has 605 places, 567 transitions, 5697 flow. Second operand 10 states and 148 transitions. [2024-06-21 19:03:10,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 580 transitions, 7423 flow [2024-06-21 19:03:15,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 605 places, 580 transitions, 7142 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-21 19:03:15,554 INFO L231 Difference]: Finished difference. Result has 606 places, 569 transitions, 5835 flow [2024-06-21 19:03:15,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5416, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5835, PETRI_PLACES=606, PETRI_TRANSITIONS=569} [2024-06-21 19:03:15,555 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 574 predicate places. [2024-06-21 19:03:15,555 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 569 transitions, 5835 flow [2024-06-21 19:03:15,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:03:15,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:15,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:15,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2024-06-21 19:03:15,556 INFO L420 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:03:15,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:15,557 INFO L85 PathProgramCache]: Analyzing trace with hash 769922491, now seen corresponding path program 24 times [2024-06-21 19:03:15,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:15,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156958564] [2024-06-21 19:03:15,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:15,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:17,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:17,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:17,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156958564] [2024-06-21 19:03:17,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156958564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:17,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:17,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:03:17,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965086752] [2024-06-21 19:03:17,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:17,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:03:17,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:17,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:03:17,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:03:17,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-21 19:03:17,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 569 transitions, 5835 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) [2024-06-21 19:03:17,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:17,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-21 19:03:17,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:18,660 INFO L124 PetriNetUnfolderBase]: 978/1780 cut-off events. [2024-06-21 19:03:18,660 INFO L125 PetriNetUnfolderBase]: For 1160476/1160476 co-relation queries the response was YES. [2024-06-21 19:03:18,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19031 conditions, 1780 events. 978/1780 cut-off events. For 1160476/1160476 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 10716 event pairs, 64 based on Foata normal form. 1/1780 useless extension candidates. Maximal degree in co-relation 18737. Up to 941 conditions per place. [2024-06-21 19:03:18,695 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 377 selfloop transitions, 206 changer transitions 0/586 dead transitions. [2024-06-21 19:03:18,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 586 transitions, 8659 flow [2024-06-21 19:03:18,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:03:18,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:03:18,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 162 transitions. [2024-06-21 19:03:18,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 19:03:18,697 INFO L175 Difference]: Start difference. First operand has 606 places, 569 transitions, 5835 flow. Second operand 12 states and 162 transitions. [2024-06-21 19:03:18,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 586 transitions, 8659 flow [2024-06-21 19:03:23,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 586 transitions, 8298 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-21 19:03:23,747 INFO L231 Difference]: Finished difference. Result has 611 places, 573 transitions, 5991 flow [2024-06-21 19:03:23,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5474, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5991, PETRI_PLACES=611, PETRI_TRANSITIONS=573} [2024-06-21 19:03:23,747 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 579 predicate places. [2024-06-21 19:03:23,747 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 573 transitions, 5991 flow [2024-06-21 19:03:23,747 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) [2024-06-21 19:03:23,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:23,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:23,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2024-06-21 19:03:23,748 INFO L420 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:03:23,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:23,749 INFO L85 PathProgramCache]: Analyzing trace with hash 769929249, now seen corresponding path program 20 times [2024-06-21 19:03:23,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:23,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653417386] [2024-06-21 19:03:23,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:23,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:25,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:25,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:25,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653417386] [2024-06-21 19:03:25,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653417386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:25,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:25,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:03:25,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696589785] [2024-06-21 19:03:25,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:25,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:03:25,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:25,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:03:25,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:03:25,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-21 19:03:25,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 573 transitions, 5991 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:03:25,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:25,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-21 19:03:25,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:26,013 INFO L124 PetriNetUnfolderBase]: 981/1785 cut-off events. [2024-06-21 19:03:26,014 INFO L125 PetriNetUnfolderBase]: For 1170490/1170490 co-relation queries the response was YES. [2024-06-21 19:03:26,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19137 conditions, 1785 events. 981/1785 cut-off events. For 1170490/1170490 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 10770 event pairs, 55 based on Foata normal form. 1/1785 useless extension candidates. Maximal degree in co-relation 18841. Up to 1087 conditions per place. [2024-06-21 19:03:26,050 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 411 selfloop transitions, 173 changer transitions 0/587 dead transitions. [2024-06-21 19:03:26,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 587 transitions, 8247 flow [2024-06-21 19:03:26,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:03:26,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:03:26,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-21 19:03:26,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46060606060606063 [2024-06-21 19:03:26,052 INFO L175 Difference]: Start difference. First operand has 611 places, 573 transitions, 5991 flow. Second operand 10 states and 152 transitions. [2024-06-21 19:03:26,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 587 transitions, 8247 flow Killed by 15