./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe007_power.opt-thin001_power.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/safe007_power.opt-thin001_power.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe007_power.opt-thin001_power.opt.i ./goblint.2024-06-19_11-23-25.files/protection/safe007_power.opt-thin001_power.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:52:19,364 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:52:19,460 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:52:19,465 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:52:19,466 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:52:19,493 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:52:19,494 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:52:19,494 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:52:19,495 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:52:19,498 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:52:19,499 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:52:19,499 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:52:19,500 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:52:19,501 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:52:19,501 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:52:19,501 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:52:19,502 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:52:19,502 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:52:19,502 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:52:19,502 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:52:19,503 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:52:19,503 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:52:19,503 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:52:19,503 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:52:19,504 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:52:19,504 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:52:19,504 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:52:19,504 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:52:19,505 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:52:19,505 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:52:19,506 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:52:19,506 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:52:19,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:52:19,506 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:52:19,506 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:52:19,507 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:52:19,507 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:52:19,507 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:52:19,507 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:52:19,507 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:52:19,507 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:52:19,508 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:52:19,508 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:52:19,508 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:52:19,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:52:19,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:52:19,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:52:19,758 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:52:19,758 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:52:19,759 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe007_power.opt-thin001_power.opt.i [2024-06-27 18:52:20,855 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:52:21,097 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:52:21,098 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_power.opt-thin001_power.opt.i [2024-06-27 18:52:21,118 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f066feb0/c226544ba12b45fd9fb77575971c621f/FLAG6f95db343 [2024-06-27 18:52:21,445 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f066feb0/c226544ba12b45fd9fb77575971c621f [2024-06-27 18:52:21,447 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:52:21,447 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:52:21,449 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/safe007_power.opt-thin001_power.opt.yml/witness.yml [2024-06-27 18:52:21,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:52:21,633 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:52:21,634 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:52:21,634 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:52:21,638 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:52:21,638 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:52:21" (1/2) ... [2024-06-27 18:52:21,639 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c292bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:52:21, skipping insertion in model container [2024-06-27 18:52:21,639 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:52:21" (1/2) ... [2024-06-27 18:52:21,641 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@649cd7eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:52:21, skipping insertion in model container [2024-06-27 18:52:21,641 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:52:21" (2/2) ... [2024-06-27 18:52:21,642 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c292bb0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:52:21, skipping insertion in model container [2024-06-27 18:52:21,642 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:52:21" (2/2) ... [2024-06-27 18:52:21,642 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:52:21,754 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:52:21,756 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] (((((((((((((((((((((((((((((((((! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & y && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 18:52:21,756 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] (((((((((((((((((((((((((((((((((! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & y && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 18:52:21,756 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((((((((((((((! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & y && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 18:52:21,756 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:52:21,757 INFO L106 edCorrectnessWitness]: ghost_update [L851-L851] multithreaded = 1; [2024-06-27 18:52:21,798 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:52:21,943 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_power.opt-thin001_power.opt.i[969,982] [2024-06-27 18:52:22,131 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:52:22,146 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:52:22,185 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_power.opt-thin001_power.opt.i[969,982] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:52:22,305 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:52:22,353 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:52:22,353 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:52:22 WrapperNode [2024-06-27 18:52:22,354 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:52:22,354 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:52:22,355 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:52:22,355 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:52:22,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:52:22" (1/1) ... [2024-06-27 18:52:22,392 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:52:22" (1/1) ... [2024-06-27 18:52:22,425 INFO L138 Inliner]: procedures = 175, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 215 [2024-06-27 18:52:22,426 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:52:22,427 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:52:22,427 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:52:22,427 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:52:22,435 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:52:22" (1/1) ... [2024-06-27 18:52:22,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:52:22" (1/1) ... [2024-06-27 18:52:22,449 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:52:22" (1/1) ... [2024-06-27 18:52:22,474 INFO L175 MemorySlicer]: Split 30 memory accesses to 2 slices as follows [2, 28]. 93 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 5 writes are split as follows [0, 5]. [2024-06-27 18:52:22,476 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:52:22" (1/1) ... [2024-06-27 18:52:22,476 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:52:22" (1/1) ... [2024-06-27 18:52:22,486 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:52:22" (1/1) ... [2024-06-27 18:52:22,488 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:52:22" (1/1) ... [2024-06-27 18:52:22,490 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:52:22" (1/1) ... [2024-06-27 18:52:22,492 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:52:22" (1/1) ... [2024-06-27 18:52:22,511 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:52:22,512 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:52:22,512 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:52:22,512 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:52:22,513 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:52:22" (1/1) ... [2024-06-27 18:52:22,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:52:22,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:52:22,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 18:52:22,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 18:52:22,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 18:52:22,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 18:52:22,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 18:52:22,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 18:52:22,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:52:22,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:52:22,589 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:52:22,589 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:52:22,589 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:52:22,590 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:52:22,590 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:52:22,590 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:52:22,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:52:22,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 18:52:22,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:52:22,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:52:22,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:52:22,591 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:52:22,697 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:52:22,698 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:52:23,098 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:52:23,098 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:52:23,387 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:52:23,387 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:52:23,388 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:52:23 BoogieIcfgContainer [2024-06-27 18:52:23,388 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:52:23,390 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:52:23,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:52:23,392 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:52:23,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:52:21" (1/4) ... [2024-06-27 18:52:23,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bfe949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:52:23, skipping insertion in model container [2024-06-27 18:52:23,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:52:21" (2/4) ... [2024-06-27 18:52:23,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bfe949 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:52:23, skipping insertion in model container [2024-06-27 18:52:23,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:52:22" (3/4) ... [2024-06-27 18:52:23,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bfe949 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:52:23, skipping insertion in model container [2024-06-27 18:52:23,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:52:23" (4/4) ... [2024-06-27 18:52:23,395 INFO L112 eAbstractionObserver]: Analyzing ICFG safe007_power.opt-thin001_power.opt.i [2024-06-27 18:52:23,409 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:52:23,410 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:52:23,410 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:52:23,473 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:52:23,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 18:52:23,537 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-27 18:52:23,537 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:52:23,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-27 18:52:23,542 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 18:52:23,585 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-27 18:52:23,608 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:52:23,632 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;@47e1ad67, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:52:23,632 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:52:23,640 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:52:23,640 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:52:23,640 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:52:23,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:23,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:52:23,642 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:23,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:23,657 INFO L85 PathProgramCache]: Analyzing trace with hash 723299614, now seen corresponding path program 1 times [2024-06-27 18:52:23,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:23,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377958694] [2024-06-27 18:52:23,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:23,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:25,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:25,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:25,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377958694] [2024-06-27 18:52:25,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377958694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:25,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:25,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:52:25,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018443283] [2024-06-27 18:52:25,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:25,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:52:25,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:25,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:52:25,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:52:25,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 18:52:25,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:25,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:25,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 18:52:25,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:26,444 INFO L124 PetriNetUnfolderBase]: 3534/5564 cut-off events. [2024-06-27 18:52:26,444 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-06-27 18:52:26,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10739 conditions, 5564 events. 3534/5564 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 34514 event pairs, 2228 based on Foata normal form. 144/5133 useless extension candidates. Maximal degree in co-relation 10727. Up to 5098 conditions per place. [2024-06-27 18:52:26,467 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 46 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2024-06-27 18:52:26,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 243 flow [2024-06-27 18:52:26,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:52:26,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:52:26,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-06-27 18:52:26,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6597222222222222 [2024-06-27 18:52:26,479 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 95 transitions. [2024-06-27 18:52:26,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 243 flow [2024-06-27 18:52:26,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 238 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:52:26,486 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 138 flow [2024-06-27 18:52:26,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2024-06-27 18:52:26,490 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-27 18:52:26,490 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 138 flow [2024-06-27 18:52:26,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:26,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:26,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:26,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:52:26,492 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:26,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:26,492 INFO L85 PathProgramCache]: Analyzing trace with hash -20202630, now seen corresponding path program 1 times [2024-06-27 18:52:26,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:26,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625959735] [2024-06-27 18:52:26,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:26,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:28,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:28,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:28,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625959735] [2024-06-27 18:52:28,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625959735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:28,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:28,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:52:28,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406216921] [2024-06-27 18:52:28,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:28,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:52:28,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:28,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:52:28,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:52:28,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:52:28,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:28,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:28,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:52:28,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:29,720 INFO L124 PetriNetUnfolderBase]: 5299/8237 cut-off events. [2024-06-27 18:52:29,722 INFO L125 PetriNetUnfolderBase]: For 1082/1084 co-relation queries the response was YES. [2024-06-27 18:52:29,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17892 conditions, 8237 events. 5299/8237 cut-off events. For 1082/1084 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 50156 event pairs, 2404 based on Foata normal form. 5/7708 useless extension candidates. Maximal degree in co-relation 17880. Up to 7519 conditions per place. [2024-06-27 18:52:29,758 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 67 selfloop transitions, 9 changer transitions 0/84 dead transitions. [2024-06-27 18:52:29,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 84 transitions, 381 flow [2024-06-27 18:52:29,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:52:29,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:52:29,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-06-27 18:52:29,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2024-06-27 18:52:29,762 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 138 flow. Second operand 4 states and 118 transitions. [2024-06-27 18:52:29,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 84 transitions, 381 flow [2024-06-27 18:52:29,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 84 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:52:29,767 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 206 flow [2024-06-27 18:52:29,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2024-06-27 18:52:29,769 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 4 predicate places. [2024-06-27 18:52:29,769 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 206 flow [2024-06-27 18:52:29,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:29,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:29,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:29,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:52:29,774 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:29,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:29,774 INFO L85 PathProgramCache]: Analyzing trace with hash 2060168217, now seen corresponding path program 1 times [2024-06-27 18:52:29,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:29,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530496645] [2024-06-27 18:52:29,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:29,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:31,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:31,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:31,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530496645] [2024-06-27 18:52:31,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530496645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:31,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:31,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:52:31,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697799772] [2024-06-27 18:52:31,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:31,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:52:31,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:31,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:52:31,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:52:31,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:52:31,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:31,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:31,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:52:31,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:32,842 INFO L124 PetriNetUnfolderBase]: 5290/8222 cut-off events. [2024-06-27 18:52:32,843 INFO L125 PetriNetUnfolderBase]: For 2925/2934 co-relation queries the response was YES. [2024-06-27 18:52:32,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19424 conditions, 8222 events. 5290/8222 cut-off events. For 2925/2934 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 49966 event pairs, 1836 based on Foata normal form. 14/7702 useless extension candidates. Maximal degree in co-relation 19409. Up to 7450 conditions per place. [2024-06-27 18:52:32,888 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 76 selfloop transitions, 12 changer transitions 0/96 dead transitions. [2024-06-27 18:52:32,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 96 transitions, 476 flow [2024-06-27 18:52:32,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:52:32,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:52:32,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 141 transitions. [2024-06-27 18:52:32,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5875 [2024-06-27 18:52:32,892 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 206 flow. Second operand 5 states and 141 transitions. [2024-06-27 18:52:32,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 96 transitions, 476 flow [2024-06-27 18:52:32,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 96 transitions, 472 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 18:52:32,898 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 250 flow [2024-06-27 18:52:32,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-06-27 18:52:32,899 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2024-06-27 18:52:32,899 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 250 flow [2024-06-27 18:52:32,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:32,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:32,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:32,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:52:32,900 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:32,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:32,901 INFO L85 PathProgramCache]: Analyzing trace with hash -79688852, now seen corresponding path program 1 times [2024-06-27 18:52:32,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:32,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356698557] [2024-06-27 18:52:32,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:32,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:32,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:32,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:32,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356698557] [2024-06-27 18:52:32,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356698557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:32,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:32,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:52:32,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355702286] [2024-06-27 18:52:32,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:32,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:52:32,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:32,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:52:32,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:52:32,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-06-27 18:52:32,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:32,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:32,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-06-27 18:52:32,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:33,376 INFO L124 PetriNetUnfolderBase]: 1393/2578 cut-off events. [2024-06-27 18:52:33,376 INFO L125 PetriNetUnfolderBase]: For 1907/1990 co-relation queries the response was YES. [2024-06-27 18:52:33,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6190 conditions, 2578 events. 1393/2578 cut-off events. For 1907/1990 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 18030 event pairs, 389 based on Foata normal form. 3/2486 useless extension candidates. Maximal degree in co-relation 6172. Up to 1526 conditions per place. [2024-06-27 18:52:33,388 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 51 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2024-06-27 18:52:33,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 75 transitions, 412 flow [2024-06-27 18:52:33,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:52:33,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:52:33,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-06-27 18:52:33,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2024-06-27 18:52:33,390 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 250 flow. Second operand 3 states and 100 transitions. [2024-06-27 18:52:33,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 75 transitions, 412 flow [2024-06-27 18:52:33,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 75 transitions, 382 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 18:52:33,395 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 218 flow [2024-06-27 18:52:33,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2024-06-27 18:52:33,396 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2024-06-27 18:52:33,396 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 218 flow [2024-06-27 18:52:33,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:33,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:33,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:33,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:52:33,397 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:33,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:33,398 INFO L85 PathProgramCache]: Analyzing trace with hash 728431030, now seen corresponding path program 1 times [2024-06-27 18:52:33,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:33,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288847833] [2024-06-27 18:52:33,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:33,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:34,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:34,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:34,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288847833] [2024-06-27 18:52:34,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288847833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:34,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:34,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:52:34,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922279427] [2024-06-27 18:52:34,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:35,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:52:35,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:35,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:52:35,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:52:35,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:52:35,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 218 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:35,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:35,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:52:35,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:35,957 INFO L124 PetriNetUnfolderBase]: 3514/5531 cut-off events. [2024-06-27 18:52:35,957 INFO L125 PetriNetUnfolderBase]: For 4027/4029 co-relation queries the response was YES. [2024-06-27 18:52:35,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14094 conditions, 5531 events. 3514/5531 cut-off events. For 4027/4029 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 33132 event pairs, 1744 based on Foata normal form. 4/5388 useless extension candidates. Maximal degree in co-relation 14075. Up to 5032 conditions per place. [2024-06-27 18:52:35,978 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 68 selfloop transitions, 12 changer transitions 1/89 dead transitions. [2024-06-27 18:52:35,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 89 transitions, 490 flow [2024-06-27 18:52:35,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:52:35,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:52:35,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-27 18:52:35,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041666666666667 [2024-06-27 18:52:35,983 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 218 flow. Second operand 5 states and 121 transitions. [2024-06-27 18:52:35,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 89 transitions, 490 flow [2024-06-27 18:52:35,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 89 transitions, 482 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:52:35,989 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 325 flow [2024-06-27 18:52:35,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=325, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2024-06-27 18:52:35,991 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2024-06-27 18:52:35,992 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 325 flow [2024-06-27 18:52:35,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:35,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:35,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:35,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:52:35,992 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:35,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:35,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1106527305, now seen corresponding path program 1 times [2024-06-27 18:52:35,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:35,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906466348] [2024-06-27 18:52:35,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:35,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:38,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:38,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:38,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906466348] [2024-06-27 18:52:38,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906466348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:38,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:38,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:52:38,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273470703] [2024-06-27 18:52:38,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:38,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:52:38,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:38,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:52:38,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:52:38,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:52:38,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 325 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:38,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:38,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:52:38,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:39,005 INFO L124 PetriNetUnfolderBase]: 3164/5036 cut-off events. [2024-06-27 18:52:39,006 INFO L125 PetriNetUnfolderBase]: For 5533/5539 co-relation queries the response was YES. [2024-06-27 18:52:39,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13928 conditions, 5036 events. 3164/5036 cut-off events. For 5533/5539 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 30089 event pairs, 1460 based on Foata normal form. 8/4897 useless extension candidates. Maximal degree in co-relation 13906. Up to 4518 conditions per place. [2024-06-27 18:52:39,028 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 77 selfloop transitions, 16 changer transitions 0/101 dead transitions. [2024-06-27 18:52:39,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 101 transitions, 616 flow [2024-06-27 18:52:39,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:52:39,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:52:39,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-27 18:52:39,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:52:39,030 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 325 flow. Second operand 6 states and 144 transitions. [2024-06-27 18:52:39,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 101 transitions, 616 flow [2024-06-27 18:52:39,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 101 transitions, 590 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-27 18:52:39,034 INFO L231 Difference]: Finished difference. Result has 67 places, 70 transitions, 376 flow [2024-06-27 18:52:39,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=376, PETRI_PLACES=67, PETRI_TRANSITIONS=70} [2024-06-27 18:52:39,035 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2024-06-27 18:52:39,035 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 70 transitions, 376 flow [2024-06-27 18:52:39,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:39,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:39,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:39,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:52:39,035 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:39,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:39,036 INFO L85 PathProgramCache]: Analyzing trace with hash -589387236, now seen corresponding path program 1 times [2024-06-27 18:52:39,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:39,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949236148] [2024-06-27 18:52:39,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:39,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:40,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:40,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:40,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949236148] [2024-06-27 18:52:40,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949236148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:40,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:40,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:52:40,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028740680] [2024-06-27 18:52:40,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:40,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:52:40,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:40,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:52:40,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:52:40,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:52:40,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 70 transitions, 376 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:40,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:40,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:52:40,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:41,733 INFO L124 PetriNetUnfolderBase]: 3190/5081 cut-off events. [2024-06-27 18:52:41,733 INFO L125 PetriNetUnfolderBase]: For 8327/8333 co-relation queries the response was YES. [2024-06-27 18:52:41,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15096 conditions, 5081 events. 3190/5081 cut-off events. For 8327/8333 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 30464 event pairs, 1408 based on Foata normal form. 8/4942 useless extension candidates. Maximal degree in co-relation 15072. Up to 4521 conditions per place. [2024-06-27 18:52:41,753 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 80 selfloop transitions, 26 changer transitions 0/114 dead transitions. [2024-06-27 18:52:41,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 114 transitions, 758 flow [2024-06-27 18:52:41,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:52:41,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:52:41,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-27 18:52:41,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-27 18:52:41,755 INFO L175 Difference]: Start difference. First operand has 67 places, 70 transitions, 376 flow. Second operand 6 states and 152 transitions. [2024-06-27 18:52:41,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 114 transitions, 758 flow [2024-06-27 18:52:41,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 114 transitions, 711 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 18:52:41,760 INFO L231 Difference]: Finished difference. Result has 69 places, 78 transitions, 462 flow [2024-06-27 18:52:41,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=462, PETRI_PLACES=69, PETRI_TRANSITIONS=78} [2024-06-27 18:52:41,760 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 15 predicate places. [2024-06-27 18:52:41,761 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 78 transitions, 462 flow [2024-06-27 18:52:41,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:41,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:41,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:41,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:52:41,761 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:41,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:41,762 INFO L85 PathProgramCache]: Analyzing trace with hash -48412644, now seen corresponding path program 2 times [2024-06-27 18:52:41,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:41,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118737710] [2024-06-27 18:52:41,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:41,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:43,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:43,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:43,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118737710] [2024-06-27 18:52:43,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118737710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:43,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:43,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:52:43,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706472761] [2024-06-27 18:52:43,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:43,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:52:43,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:43,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:52:43,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:52:43,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:52:43,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 78 transitions, 462 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:43,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:43,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:52:43,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:44,710 INFO L124 PetriNetUnfolderBase]: 4058/6409 cut-off events. [2024-06-27 18:52:44,711 INFO L125 PetriNetUnfolderBase]: For 13455/13496 co-relation queries the response was YES. [2024-06-27 18:52:44,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19717 conditions, 6409 events. 4058/6409 cut-off events. For 13455/13496 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 38067 event pairs, 1600 based on Foata normal form. 32/6258 useless extension candidates. Maximal degree in co-relation 19692. Up to 5704 conditions per place. [2024-06-27 18:52:44,736 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 75 selfloop transitions, 22 changer transitions 0/104 dead transitions. [2024-06-27 18:52:44,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 104 transitions, 718 flow [2024-06-27 18:52:44,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:52:44,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:52:44,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-27 18:52:44,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-27 18:52:44,738 INFO L175 Difference]: Start difference. First operand has 69 places, 78 transitions, 462 flow. Second operand 5 states and 123 transitions. [2024-06-27 18:52:44,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 104 transitions, 718 flow [2024-06-27 18:52:44,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 104 transitions, 661 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-27 18:52:44,751 INFO L231 Difference]: Finished difference. Result has 72 places, 78 transitions, 465 flow [2024-06-27 18:52:44,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=465, PETRI_PLACES=72, PETRI_TRANSITIONS=78} [2024-06-27 18:52:44,752 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 18 predicate places. [2024-06-27 18:52:44,752 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 78 transitions, 465 flow [2024-06-27 18:52:44,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:44,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:44,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:44,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:52:44,753 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:44,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:44,753 INFO L85 PathProgramCache]: Analyzing trace with hash -57390027, now seen corresponding path program 1 times [2024-06-27 18:52:44,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:44,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20663723] [2024-06-27 18:52:44,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:44,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:46,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:46,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:46,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20663723] [2024-06-27 18:52:46,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20663723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:46,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:46,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:52:46,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125808864] [2024-06-27 18:52:46,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:46,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:52:46,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:46,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:52:46,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:52:46,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:52:46,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 78 transitions, 465 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:46,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:46,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:52:46,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:48,021 INFO L124 PetriNetUnfolderBase]: 3182/5069 cut-off events. [2024-06-27 18:52:48,021 INFO L125 PetriNetUnfolderBase]: For 12483/12489 co-relation queries the response was YES. [2024-06-27 18:52:48,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16276 conditions, 5069 events. 3182/5069 cut-off events. For 12483/12489 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 30421 event pairs, 1350 based on Foata normal form. 10/4932 useless extension candidates. Maximal degree in co-relation 16249. Up to 4504 conditions per place. [2024-06-27 18:52:48,044 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 95 selfloop transitions, 19 changer transitions 0/122 dead transitions. [2024-06-27 18:52:48,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 122 transitions, 830 flow [2024-06-27 18:52:48,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:52:48,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:52:48,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-27 18:52:48,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:52:48,046 INFO L175 Difference]: Start difference. First operand has 72 places, 78 transitions, 465 flow. Second operand 7 states and 168 transitions. [2024-06-27 18:52:48,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 122 transitions, 830 flow [2024-06-27 18:52:48,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 122 transitions, 786 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 18:52:48,053 INFO L231 Difference]: Finished difference. Result has 75 places, 81 transitions, 509 flow [2024-06-27 18:52:48,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=509, PETRI_PLACES=75, PETRI_TRANSITIONS=81} [2024-06-27 18:52:48,054 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2024-06-27 18:52:48,054 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 81 transitions, 509 flow [2024-06-27 18:52:48,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:48,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:48,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:48,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:52:48,055 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:48,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:48,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1091133308, now seen corresponding path program 1 times [2024-06-27 18:52:48,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:48,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335883378] [2024-06-27 18:52:48,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:48,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:49,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:49,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:49,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335883378] [2024-06-27 18:52:49,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335883378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:49,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:49,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:52:49,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436312811] [2024-06-27 18:52:49,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:49,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:52:49,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:49,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:52:49,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:52:49,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:52:49,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 81 transitions, 509 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:49,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:49,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:52:49,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:50,759 INFO L124 PetriNetUnfolderBase]: 3208/5114 cut-off events. [2024-06-27 18:52:50,759 INFO L125 PetriNetUnfolderBase]: For 16076/16082 co-relation queries the response was YES. [2024-06-27 18:52:50,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17221 conditions, 5114 events. 3208/5114 cut-off events. For 16076/16082 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 30594 event pairs, 1345 based on Foata normal form. 8/4975 useless extension candidates. Maximal degree in co-relation 17193. Up to 4538 conditions per place. [2024-06-27 18:52:50,783 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 107 selfloop transitions, 23 changer transitions 0/138 dead transitions. [2024-06-27 18:52:50,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 138 transitions, 981 flow [2024-06-27 18:52:50,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:52:50,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:52:50,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 18:52:50,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2024-06-27 18:52:50,785 INFO L175 Difference]: Start difference. First operand has 75 places, 81 transitions, 509 flow. Second operand 7 states and 171 transitions. [2024-06-27 18:52:50,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 138 transitions, 981 flow [2024-06-27 18:52:50,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 138 transitions, 917 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 18:52:50,797 INFO L231 Difference]: Finished difference. Result has 79 places, 96 transitions, 655 flow [2024-06-27 18:52:50,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=655, PETRI_PLACES=79, PETRI_TRANSITIONS=96} [2024-06-27 18:52:50,797 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 25 predicate places. [2024-06-27 18:52:50,797 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 96 transitions, 655 flow [2024-06-27 18:52:50,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:50,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:50,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:50,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:52:50,798 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:50,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:50,799 INFO L85 PathProgramCache]: Analyzing trace with hash -628924238, now seen corresponding path program 2 times [2024-06-27 18:52:50,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:50,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221118791] [2024-06-27 18:52:50,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:50,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:52,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:52,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:52,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221118791] [2024-06-27 18:52:52,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221118791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:52,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:52,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:52:52,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197520676] [2024-06-27 18:52:52,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:52,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:52:52,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:52,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:52:52,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:52:52,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:52:52,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 96 transitions, 655 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:52,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:52,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:52:52,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:53,529 INFO L124 PetriNetUnfolderBase]: 3237/5155 cut-off events. [2024-06-27 18:52:53,530 INFO L125 PetriNetUnfolderBase]: For 21167/21173 co-relation queries the response was YES. [2024-06-27 18:52:53,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18703 conditions, 5155 events. 3237/5155 cut-off events. For 21167/21173 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 30879 event pairs, 1345 based on Foata normal form. 8/5016 useless extension candidates. Maximal degree in co-relation 18672. Up to 4556 conditions per place. [2024-06-27 18:52:53,555 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 114 selfloop transitions, 27 changer transitions 0/149 dead transitions. [2024-06-27 18:52:53,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 149 transitions, 1190 flow [2024-06-27 18:52:53,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:52:53,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:52:53,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 18:52:53,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 18:52:53,557 INFO L175 Difference]: Start difference. First operand has 79 places, 96 transitions, 655 flow. Second operand 7 states and 175 transitions. [2024-06-27 18:52:53,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 149 transitions, 1190 flow [2024-06-27 18:52:53,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 149 transitions, 1125 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-27 18:52:53,572 INFO L231 Difference]: Finished difference. Result has 83 places, 104 transitions, 761 flow [2024-06-27 18:52:53,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=761, PETRI_PLACES=83, PETRI_TRANSITIONS=104} [2024-06-27 18:52:53,572 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 29 predicate places. [2024-06-27 18:52:53,572 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 104 transitions, 761 flow [2024-06-27 18:52:53,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:53,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:53,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:53,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:52:53,573 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:53,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:53,574 INFO L85 PathProgramCache]: Analyzing trace with hash -628930748, now seen corresponding path program 3 times [2024-06-27 18:52:53,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:53,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367759225] [2024-06-27 18:52:53,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:53,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:55,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:55,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:55,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367759225] [2024-06-27 18:52:55,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367759225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:55,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:55,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:52:55,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185187588] [2024-06-27 18:52:55,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:55,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:52:55,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:55,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:52:55,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:52:55,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:52:55,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 104 transitions, 761 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:55,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:55,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:52:55,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:56,550 INFO L124 PetriNetUnfolderBase]: 3232/5147 cut-off events. [2024-06-27 18:52:56,550 INFO L125 PetriNetUnfolderBase]: For 26056/26062 co-relation queries the response was YES. [2024-06-27 18:52:56,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19629 conditions, 5147 events. 3232/5147 cut-off events. For 26056/26062 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 30888 event pairs, 1348 based on Foata normal form. 8/5008 useless extension candidates. Maximal degree in co-relation 19597. Up to 4588 conditions per place. [2024-06-27 18:52:56,572 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 111 selfloop transitions, 19 changer transitions 0/138 dead transitions. [2024-06-27 18:52:56,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 138 transitions, 1108 flow [2024-06-27 18:52:56,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:52:56,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:52:56,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-27 18:52:56,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-27 18:52:56,574 INFO L175 Difference]: Start difference. First operand has 83 places, 104 transitions, 761 flow. Second operand 6 states and 148 transitions. [2024-06-27 18:52:56,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 138 transitions, 1108 flow [2024-06-27 18:52:56,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 138 transitions, 1012 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-06-27 18:52:56,595 INFO L231 Difference]: Finished difference. Result has 86 places, 104 transitions, 712 flow [2024-06-27 18:52:56,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=712, PETRI_PLACES=86, PETRI_TRANSITIONS=104} [2024-06-27 18:52:56,595 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 32 predicate places. [2024-06-27 18:52:56,595 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 104 transitions, 712 flow [2024-06-27 18:52:56,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:56,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:56,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:56,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:52:56,596 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:56,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:56,597 INFO L85 PathProgramCache]: Analyzing trace with hash 360671473, now seen corresponding path program 1 times [2024-06-27 18:52:56,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:56,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212908679] [2024-06-27 18:52:56,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:56,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:58,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:58,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:58,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212908679] [2024-06-27 18:52:58,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212908679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:58,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:58,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:52:58,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006507209] [2024-06-27 18:52:58,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:58,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:52:58,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:58,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:52:58,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:52:58,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:52:58,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 104 transitions, 712 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 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) [2024-06-27 18:52:58,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:58,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:52:58,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:59,370 INFO L124 PetriNetUnfolderBase]: 3044/4914 cut-off events. [2024-06-27 18:52:59,371 INFO L125 PetriNetUnfolderBase]: For 27199/27201 co-relation queries the response was YES. [2024-06-27 18:52:59,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18879 conditions, 4914 events. 3044/4914 cut-off events. For 27199/27201 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 29546 event pairs, 1302 based on Foata normal form. 2/4756 useless extension candidates. Maximal degree in co-relation 18845. Up to 4357 conditions per place. [2024-06-27 18:52:59,398 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 99 selfloop transitions, 18 changer transitions 0/130 dead transitions. [2024-06-27 18:52:59,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 130 transitions, 1068 flow [2024-06-27 18:52:59,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:52:59,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:52:59,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-27 18:52:59,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041666666666667 [2024-06-27 18:52:59,400 INFO L175 Difference]: Start difference. First operand has 86 places, 104 transitions, 712 flow. Second operand 5 states and 121 transitions. [2024-06-27 18:52:59,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 130 transitions, 1068 flow [2024-06-27 18:52:59,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 130 transitions, 1019 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 18:52:59,421 INFO L231 Difference]: Finished difference. Result has 87 places, 110 transitions, 785 flow [2024-06-27 18:52:59,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=785, PETRI_PLACES=87, PETRI_TRANSITIONS=110} [2024-06-27 18:52:59,422 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 33 predicate places. [2024-06-27 18:52:59,422 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 110 transitions, 785 flow [2024-06-27 18:52:59,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 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) [2024-06-27 18:52:59,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:59,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:59,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:52:59,423 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:59,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:59,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1188072861, now seen corresponding path program 1 times [2024-06-27 18:52:59,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:59,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507875151] [2024-06-27 18:52:59,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:59,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:01,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:01,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:01,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507875151] [2024-06-27 18:53:01,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507875151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:01,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:01,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:53:01,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668424633] [2024-06-27 18:53:01,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:01,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:53:01,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:01,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:53:01,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:53:01,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:53:01,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 110 transitions, 785 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:01,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:01,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:53:01,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:02,680 INFO L124 PetriNetUnfolderBase]: 4132/6523 cut-off events. [2024-06-27 18:53:02,680 INFO L125 PetriNetUnfolderBase]: For 36778/36818 co-relation queries the response was YES. [2024-06-27 18:53:02,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25190 conditions, 6523 events. 4132/6523 cut-off events. For 36778/36818 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 38633 event pairs, 1076 based on Foata normal form. 38/6378 useless extension candidates. Maximal degree in co-relation 25154. Up to 5634 conditions per place. [2024-06-27 18:53:02,714 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 114 selfloop transitions, 42 changer transitions 0/163 dead transitions. [2024-06-27 18:53:02,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 163 transitions, 1361 flow [2024-06-27 18:53:02,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:53:02,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:53:02,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 18:53:02,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-27 18:53:02,717 INFO L175 Difference]: Start difference. First operand has 87 places, 110 transitions, 785 flow. Second operand 7 states and 172 transitions. [2024-06-27 18:53:02,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 163 transitions, 1361 flow [2024-06-27 18:53:02,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 163 transitions, 1343 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-27 18:53:02,752 INFO L231 Difference]: Finished difference. Result has 93 places, 116 transitions, 965 flow [2024-06-27 18:53:02,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=965, PETRI_PLACES=93, PETRI_TRANSITIONS=116} [2024-06-27 18:53:02,752 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 39 predicate places. [2024-06-27 18:53:02,753 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 116 transitions, 965 flow [2024-06-27 18:53:02,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:02,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:02,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:02,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:53:02,753 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:02,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:02,754 INFO L85 PathProgramCache]: Analyzing trace with hash 534601723, now seen corresponding path program 2 times [2024-06-27 18:53:02,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:02,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22186074] [2024-06-27 18:53:02,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:02,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:04,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:04,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:04,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22186074] [2024-06-27 18:53:04,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22186074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:04,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:04,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:53:04,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220758233] [2024-06-27 18:53:04,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:04,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:53:04,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:04,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:53:04,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:53:04,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:53:04,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 116 transitions, 965 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:04,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:04,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:53:04,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:05,485 INFO L124 PetriNetUnfolderBase]: 3310/5263 cut-off events. [2024-06-27 18:53:05,485 INFO L125 PetriNetUnfolderBase]: For 37333/37337 co-relation queries the response was YES. [2024-06-27 18:53:05,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22156 conditions, 5263 events. 3310/5263 cut-off events. For 37333/37337 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 31425 event pairs, 1245 based on Foata normal form. 8/5124 useless extension candidates. Maximal degree in co-relation 22117. Up to 4658 conditions per place. [2024-06-27 18:53:05,515 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 115 selfloop transitions, 38 changer transitions 0/161 dead transitions. [2024-06-27 18:53:05,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 161 transitions, 1429 flow [2024-06-27 18:53:05,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:53:05,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:53:05,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 18:53:05,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-27 18:53:05,517 INFO L175 Difference]: Start difference. First operand has 93 places, 116 transitions, 965 flow. Second operand 7 states and 174 transitions. [2024-06-27 18:53:05,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 161 transitions, 1429 flow [2024-06-27 18:53:05,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 161 transitions, 1319 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-06-27 18:53:05,552 INFO L231 Difference]: Finished difference. Result has 97 places, 119 transitions, 1002 flow [2024-06-27 18:53:05,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1002, PETRI_PLACES=97, PETRI_TRANSITIONS=119} [2024-06-27 18:53:05,553 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 43 predicate places. [2024-06-27 18:53:05,553 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 119 transitions, 1002 flow [2024-06-27 18:53:05,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:05,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:05,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:05,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:53:05,553 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:05,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:05,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1190935773, now seen corresponding path program 1 times [2024-06-27 18:53:05,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:05,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768272060] [2024-06-27 18:53:05,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:05,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:08,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:08,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:08,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768272060] [2024-06-27 18:53:08,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768272060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:08,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:08,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:53:08,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958906083] [2024-06-27 18:53:08,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:08,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:53:08,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:08,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:53:08,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:53:08,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:53:08,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 119 transitions, 1002 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:08,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:08,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:53:08,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:09,594 INFO L124 PetriNetUnfolderBase]: 4200/6630 cut-off events. [2024-06-27 18:53:09,594 INFO L125 PetriNetUnfolderBase]: For 45198/45238 co-relation queries the response was YES. [2024-06-27 18:53:09,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26744 conditions, 6630 events. 4200/6630 cut-off events. For 45198/45238 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 39358 event pairs, 1365 based on Foata normal form. 36/6483 useless extension candidates. Maximal degree in co-relation 26703. Up to 5865 conditions per place. [2024-06-27 18:53:09,627 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 141 selfloop transitions, 27 changer transitions 0/175 dead transitions. [2024-06-27 18:53:09,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 175 transitions, 1531 flow [2024-06-27 18:53:09,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:53:09,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:53:09,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 18:53:09,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-06-27 18:53:09,629 INFO L175 Difference]: Start difference. First operand has 97 places, 119 transitions, 1002 flow. Second operand 8 states and 189 transitions. [2024-06-27 18:53:09,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 175 transitions, 1531 flow [2024-06-27 18:53:09,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 175 transitions, 1430 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 18:53:09,667 INFO L231 Difference]: Finished difference. Result has 100 places, 123 transitions, 1032 flow [2024-06-27 18:53:09,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1032, PETRI_PLACES=100, PETRI_TRANSITIONS=123} [2024-06-27 18:53:09,667 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 46 predicate places. [2024-06-27 18:53:09,668 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 123 transitions, 1032 flow [2024-06-27 18:53:09,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:09,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:09,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:09,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:53:09,668 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:09,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:09,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1977979195, now seen corresponding path program 3 times [2024-06-27 18:53:09,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:09,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009626200] [2024-06-27 18:53:09,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:09,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:11,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:11,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:11,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009626200] [2024-06-27 18:53:11,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009626200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:11,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:11,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:53:11,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513979125] [2024-06-27 18:53:11,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:11,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:53:11,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:11,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:53:11,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:53:11,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:53:11,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 123 transitions, 1032 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:11,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:11,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:53:11,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:12,697 INFO L124 PetriNetUnfolderBase]: 3328/5296 cut-off events. [2024-06-27 18:53:12,697 INFO L125 PetriNetUnfolderBase]: For 43704/43708 co-relation queries the response was YES. [2024-06-27 18:53:12,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23123 conditions, 5296 events. 3328/5296 cut-off events. For 43704/43708 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 31610 event pairs, 847 based on Foata normal form. 8/5157 useless extension candidates. Maximal degree in co-relation 23081. Up to 4647 conditions per place. [2024-06-27 18:53:12,725 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 115 selfloop transitions, 34 changer transitions 0/157 dead transitions. [2024-06-27 18:53:12,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 157 transitions, 1414 flow [2024-06-27 18:53:12,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:53:12,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:53:12,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-27 18:53:12,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5243055555555556 [2024-06-27 18:53:12,728 INFO L175 Difference]: Start difference. First operand has 100 places, 123 transitions, 1032 flow. Second operand 6 states and 151 transitions. [2024-06-27 18:53:12,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 157 transitions, 1414 flow [2024-06-27 18:53:12,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 157 transitions, 1287 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-27 18:53:12,762 INFO L231 Difference]: Finished difference. Result has 100 places, 123 transitions, 987 flow [2024-06-27 18:53:12,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=987, PETRI_PLACES=100, PETRI_TRANSITIONS=123} [2024-06-27 18:53:12,763 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 46 predicate places. [2024-06-27 18:53:12,763 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 123 transitions, 987 flow [2024-06-27 18:53:12,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:12,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:12,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:12,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:53:12,764 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:12,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:12,764 INFO L85 PathProgramCache]: Analyzing trace with hash 682481663, now seen corresponding path program 2 times [2024-06-27 18:53:12,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:12,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566366547] [2024-06-27 18:53:12,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:12,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:12,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:14,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:14,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:14,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566366547] [2024-06-27 18:53:14,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566366547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:14,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:14,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:53:14,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669367092] [2024-06-27 18:53:14,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:14,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:53:14,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:14,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:53:14,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:53:14,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:53:14,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 123 transitions, 987 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:14,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:14,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:53:14,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:16,414 INFO L124 PetriNetUnfolderBase]: 4253/6563 cut-off events. [2024-06-27 18:53:16,414 INFO L125 PetriNetUnfolderBase]: For 54432/54472 co-relation queries the response was YES. [2024-06-27 18:53:16,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27968 conditions, 6563 events. 4253/6563 cut-off events. For 54432/54472 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 38124 event pairs, 1363 based on Foata normal form. 36/6466 useless extension candidates. Maximal degree in co-relation 27925. Up to 5768 conditions per place. [2024-06-27 18:53:16,450 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 140 selfloop transitions, 63 changer transitions 0/210 dead transitions. [2024-06-27 18:53:16,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 210 transitions, 1941 flow [2024-06-27 18:53:16,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:53:16,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:53:16,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-27 18:53:16,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115740740740741 [2024-06-27 18:53:16,452 INFO L175 Difference]: Start difference. First operand has 100 places, 123 transitions, 987 flow. Second operand 9 states and 221 transitions. [2024-06-27 18:53:16,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 210 transitions, 1941 flow [2024-06-27 18:53:16,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 210 transitions, 1862 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 18:53:16,495 INFO L231 Difference]: Finished difference. Result has 107 places, 144 transitions, 1394 flow [2024-06-27 18:53:16,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1394, PETRI_PLACES=107, PETRI_TRANSITIONS=144} [2024-06-27 18:53:16,495 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 53 predicate places. [2024-06-27 18:53:16,495 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 144 transitions, 1394 flow [2024-06-27 18:53:16,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:16,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:16,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:16,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:53:16,496 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:16,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:16,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1978194397, now seen corresponding path program 3 times [2024-06-27 18:53:16,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:16,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644023184] [2024-06-27 18:53:16,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:16,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:16,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:18,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:18,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:18,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644023184] [2024-06-27 18:53:18,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644023184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:18,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:18,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:53:18,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606206277] [2024-06-27 18:53:18,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:18,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:53:18,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:18,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:53:18,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:53:18,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:53:18,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 144 transitions, 1394 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:18,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:18,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:53:18,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:20,135 INFO L124 PetriNetUnfolderBase]: 3561/5556 cut-off events. [2024-06-27 18:53:20,136 INFO L125 PetriNetUnfolderBase]: For 58999/59015 co-relation queries the response was YES. [2024-06-27 18:53:20,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26711 conditions, 5556 events. 3561/5556 cut-off events. For 58999/59015 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 32826 event pairs, 1242 based on Foata normal form. 6/5418 useless extension candidates. Maximal degree in co-relation 26664. Up to 4903 conditions per place. [2024-06-27 18:53:20,167 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 163 selfloop transitions, 47 changer transitions 0/219 dead transitions. [2024-06-27 18:53:20,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 219 transitions, 2289 flow [2024-06-27 18:53:20,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:53:20,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:53:20,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-27 18:53:20,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-27 18:53:20,170 INFO L175 Difference]: Start difference. First operand has 107 places, 144 transitions, 1394 flow. Second operand 9 states and 224 transitions. [2024-06-27 18:53:20,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 219 transitions, 2289 flow [2024-06-27 18:53:20,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 219 transitions, 1994 flow, removed 131 selfloop flow, removed 3 redundant places. [2024-06-27 18:53:20,225 INFO L231 Difference]: Finished difference. Result has 113 places, 156 transitions, 1464 flow [2024-06-27 18:53:20,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1464, PETRI_PLACES=113, PETRI_TRANSITIONS=156} [2024-06-27 18:53:20,225 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 59 predicate places. [2024-06-27 18:53:20,226 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 156 transitions, 1464 flow [2024-06-27 18:53:20,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:20,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:20,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:20,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:53:20,226 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:20,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:20,227 INFO L85 PathProgramCache]: Analyzing trace with hash 416575133, now seen corresponding path program 4 times [2024-06-27 18:53:20,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:20,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564454473] [2024-06-27 18:53:20,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:20,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:22,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:22,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:22,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564454473] [2024-06-27 18:53:22,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564454473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:22,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:22,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:53:22,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041597691] [2024-06-27 18:53:22,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:22,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:53:22,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:22,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:53:22,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:53:22,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:53:22,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 156 transitions, 1464 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:22,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:22,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:53:22,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:24,186 INFO L124 PetriNetUnfolderBase]: 4280/6599 cut-off events. [2024-06-27 18:53:24,186 INFO L125 PetriNetUnfolderBase]: For 66957/66997 co-relation queries the response was YES. [2024-06-27 18:53:24,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30737 conditions, 6599 events. 4280/6599 cut-off events. For 66957/66997 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 38301 event pairs, 1370 based on Foata normal form. 36/6502 useless extension candidates. Maximal degree in co-relation 30688. Up to 5991 conditions per place. [2024-06-27 18:53:24,229 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 170 selfloop transitions, 23 changer transitions 0/200 dead transitions. [2024-06-27 18:53:24,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 200 transitions, 1967 flow [2024-06-27 18:53:24,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:53:24,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:53:24,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 18:53:24,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-27 18:53:24,233 INFO L175 Difference]: Start difference. First operand has 113 places, 156 transitions, 1464 flow. Second operand 7 states and 167 transitions. [2024-06-27 18:53:24,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 200 transitions, 1967 flow [2024-06-27 18:53:24,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 200 transitions, 1832 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-27 18:53:24,328 INFO L231 Difference]: Finished difference. Result has 115 places, 156 transitions, 1384 flow [2024-06-27 18:53:24,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1384, PETRI_PLACES=115, PETRI_TRANSITIONS=156} [2024-06-27 18:53:24,329 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 61 predicate places. [2024-06-27 18:53:24,329 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 156 transitions, 1384 flow [2024-06-27 18:53:24,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:24,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:24,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:24,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:53:24,331 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:24,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:24,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1677272885, now seen corresponding path program 1 times [2024-06-27 18:53:24,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:24,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284345138] [2024-06-27 18:53:24,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:24,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:26,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:26,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:26,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284345138] [2024-06-27 18:53:26,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284345138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:26,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:26,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:53:26,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755505974] [2024-06-27 18:53:26,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:26,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:53:26,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:26,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:53:26,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:53:26,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:53:26,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 156 transitions, 1384 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:26,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:26,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:53:26,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:27,560 INFO L124 PetriNetUnfolderBase]: 4036/6449 cut-off events. [2024-06-27 18:53:27,561 INFO L125 PetriNetUnfolderBase]: For 67423/67431 co-relation queries the response was YES. [2024-06-27 18:53:27,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29774 conditions, 6449 events. 4036/6449 cut-off events. For 67423/67431 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 38515 event pairs, 1296 based on Foata normal form. 8/6264 useless extension candidates. Maximal degree in co-relation 29723. Up to 5682 conditions per place. [2024-06-27 18:53:27,616 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 173 selfloop transitions, 17 changer transitions 0/202 dead transitions. [2024-06-27 18:53:27,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 202 transitions, 2072 flow [2024-06-27 18:53:27,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:53:27,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:53:27,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-27 18:53:27,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826388888888889 [2024-06-27 18:53:27,620 INFO L175 Difference]: Start difference. First operand has 115 places, 156 transitions, 1384 flow. Second operand 6 states and 139 transitions. [2024-06-27 18:53:27,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 202 transitions, 2072 flow [2024-06-27 18:53:27,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 202 transitions, 2003 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 18:53:27,694 INFO L231 Difference]: Finished difference. Result has 117 places, 171 transitions, 1562 flow [2024-06-27 18:53:27,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1562, PETRI_PLACES=117, PETRI_TRANSITIONS=171} [2024-06-27 18:53:27,694 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 63 predicate places. [2024-06-27 18:53:27,695 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 171 transitions, 1562 flow [2024-06-27 18:53:27,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:27,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:27,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:27,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:53:27,695 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:27,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:27,696 INFO L85 PathProgramCache]: Analyzing trace with hash -100646107, now seen corresponding path program 1 times [2024-06-27 18:53:27,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:27,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215880553] [2024-06-27 18:53:27,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:27,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:29,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:29,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:29,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215880553] [2024-06-27 18:53:29,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215880553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:29,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:29,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:53:29,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468736596] [2024-06-27 18:53:29,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:29,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:53:29,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:29,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:53:29,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:53:29,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:53:29,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 171 transitions, 1562 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:29,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:29,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:53:29,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:31,214 INFO L124 PetriNetUnfolderBase]: 4310/6660 cut-off events. [2024-06-27 18:53:31,214 INFO L125 PetriNetUnfolderBase]: For 72740/72785 co-relation queries the response was YES. [2024-06-27 18:53:31,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32127 conditions, 6660 events. 4310/6660 cut-off events. For 72740/72785 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 38712 event pairs, 901 based on Foata normal form. 42/6564 useless extension candidates. Maximal degree in co-relation 32073. Up to 5850 conditions per place. [2024-06-27 18:53:31,255 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 197 selfloop transitions, 34 changer transitions 0/238 dead transitions. [2024-06-27 18:53:31,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 238 transitions, 2287 flow [2024-06-27 18:53:31,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:53:31,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:53:31,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 18:53:31,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-06-27 18:53:31,257 INFO L175 Difference]: Start difference. First operand has 117 places, 171 transitions, 1562 flow. Second operand 8 states and 189 transitions. [2024-06-27 18:53:31,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 238 transitions, 2287 flow [2024-06-27 18:53:31,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 238 transitions, 2275 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-27 18:53:31,333 INFO L231 Difference]: Finished difference. Result has 126 places, 184 transitions, 1795 flow [2024-06-27 18:53:31,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1552, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1795, PETRI_PLACES=126, PETRI_TRANSITIONS=184} [2024-06-27 18:53:31,333 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 72 predicate places. [2024-06-27 18:53:31,333 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 184 transitions, 1795 flow [2024-06-27 18:53:31,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:31,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:31,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:31,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:53:31,334 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:31,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:31,334 INFO L85 PathProgramCache]: Analyzing trace with hash -693905757, now seen corresponding path program 2 times [2024-06-27 18:53:31,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:31,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11032566] [2024-06-27 18:53:31,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:31,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:33,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:33,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:33,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11032566] [2024-06-27 18:53:33,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11032566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:33,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:33,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:53:33,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200276764] [2024-06-27 18:53:33,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:33,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:53:33,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:33,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:53:33,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:53:33,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:53:33,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 184 transitions, 1795 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:33,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:33,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:53:33,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:34,807 INFO L124 PetriNetUnfolderBase]: 4056/6404 cut-off events. [2024-06-27 18:53:34,808 INFO L125 PetriNetUnfolderBase]: For 83164/83173 co-relation queries the response was YES. [2024-06-27 18:53:34,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32680 conditions, 6404 events. 4056/6404 cut-off events. For 83164/83173 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 37749 event pairs, 1225 based on Foata normal form. 11/6271 useless extension candidates. Maximal degree in co-relation 32621. Up to 5699 conditions per place. [2024-06-27 18:53:34,856 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 200 selfloop transitions, 28 changer transitions 0/240 dead transitions. [2024-06-27 18:53:34,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 240 transitions, 2463 flow [2024-06-27 18:53:34,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:53:34,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:53:34,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 18:53:34,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-06-27 18:53:34,857 INFO L175 Difference]: Start difference. First operand has 126 places, 184 transitions, 1795 flow. Second operand 8 states and 194 transitions. [2024-06-27 18:53:34,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 240 transitions, 2463 flow [2024-06-27 18:53:34,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 240 transitions, 2336 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-27 18:53:34,977 INFO L231 Difference]: Finished difference. Result has 131 places, 188 transitions, 1825 flow [2024-06-27 18:53:34,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1675, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1825, PETRI_PLACES=131, PETRI_TRANSITIONS=188} [2024-06-27 18:53:34,977 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 77 predicate places. [2024-06-27 18:53:34,977 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 188 transitions, 1825 flow [2024-06-27 18:53:34,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:34,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:34,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:34,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:53:34,978 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:34,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:34,979 INFO L85 PathProgramCache]: Analyzing trace with hash -607036317, now seen corresponding path program 3 times [2024-06-27 18:53:34,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:34,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522760556] [2024-06-27 18:53:34,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:34,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:36,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:36,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:36,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522760556] [2024-06-27 18:53:36,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522760556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:36,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:36,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:53:36,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499298191] [2024-06-27 18:53:36,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:36,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:53:36,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:36,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:53:36,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:53:36,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:53:36,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 188 transitions, 1825 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:36,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:36,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:53:36,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:38,745 INFO L124 PetriNetUnfolderBase]: 4098/6466 cut-off events. [2024-06-27 18:53:38,745 INFO L125 PetriNetUnfolderBase]: For 93288/93297 co-relation queries the response was YES. [2024-06-27 18:53:38,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33634 conditions, 6466 events. 4098/6466 cut-off events. For 93288/93297 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 38148 event pairs, 1234 based on Foata normal form. 11/6333 useless extension candidates. Maximal degree in co-relation 33573. Up to 5785 conditions per place. [2024-06-27 18:53:38,793 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 202 selfloop transitions, 29 changer transitions 0/243 dead transitions. [2024-06-27 18:53:38,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 243 transitions, 2504 flow [2024-06-27 18:53:38,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:53:38,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:53:38,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 18:53:38,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-27 18:53:38,795 INFO L175 Difference]: Start difference. First operand has 131 places, 188 transitions, 1825 flow. Second operand 8 states and 195 transitions. [2024-06-27 18:53:38,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 243 transitions, 2504 flow [2024-06-27 18:53:39,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 243 transitions, 2392 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-27 18:53:39,025 INFO L231 Difference]: Finished difference. Result has 134 places, 191 transitions, 1861 flow [2024-06-27 18:53:39,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1713, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1861, PETRI_PLACES=134, PETRI_TRANSITIONS=191} [2024-06-27 18:53:39,026 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 80 predicate places. [2024-06-27 18:53:39,026 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 191 transitions, 1861 flow [2024-06-27 18:53:39,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:39,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:39,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:39,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:53:39,027 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:39,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:39,027 INFO L85 PathProgramCache]: Analyzing trace with hash -607029373, now seen corresponding path program 1 times [2024-06-27 18:53:39,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:39,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384601182] [2024-06-27 18:53:39,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:39,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:41,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:41,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:41,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384601182] [2024-06-27 18:53:41,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384601182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:41,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:41,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:53:41,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129647391] [2024-06-27 18:53:41,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:41,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:53:41,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:41,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:53:41,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:53:41,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:53:41,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 191 transitions, 1861 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:41,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:41,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:53:41,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:43,245 INFO L124 PetriNetUnfolderBase]: 4246/6742 cut-off events. [2024-06-27 18:53:43,245 INFO L125 PetriNetUnfolderBase]: For 111570/111579 co-relation queries the response was YES. [2024-06-27 18:53:43,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35743 conditions, 6742 events. 4246/6742 cut-off events. For 111570/111579 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 40288 event pairs, 1251 based on Foata normal form. 23/6611 useless extension candidates. Maximal degree in co-relation 35681. Up to 5827 conditions per place. [2024-06-27 18:53:43,290 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 193 selfloop transitions, 59 changer transitions 0/264 dead transitions. [2024-06-27 18:53:43,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 264 transitions, 2805 flow [2024-06-27 18:53:43,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:53:43,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:53:43,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-27 18:53:43,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-27 18:53:43,292 INFO L175 Difference]: Start difference. First operand has 134 places, 191 transitions, 1861 flow. Second operand 9 states and 224 transitions. [2024-06-27 18:53:43,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 264 transitions, 2805 flow [2024-06-27 18:53:43,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 264 transitions, 2681 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 18:53:43,414 INFO L231 Difference]: Finished difference. Result has 139 places, 201 transitions, 2147 flow [2024-06-27 18:53:43,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1737, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2147, PETRI_PLACES=139, PETRI_TRANSITIONS=201} [2024-06-27 18:53:43,415 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 85 predicate places. [2024-06-27 18:53:43,415 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 201 transitions, 2147 flow [2024-06-27 18:53:43,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:43,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:43,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:43,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:53:43,416 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:43,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:43,416 INFO L85 PathProgramCache]: Analyzing trace with hash 35178287, now seen corresponding path program 4 times [2024-06-27 18:53:43,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:43,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647880094] [2024-06-27 18:53:43,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:43,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:45,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:45,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:45,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647880094] [2024-06-27 18:53:45,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647880094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:45,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:45,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:53:45,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763251395] [2024-06-27 18:53:45,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:45,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:53:45,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:45,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:53:45,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:53:45,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:53:45,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 201 transitions, 2147 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:45,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:45,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:53:45,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:47,171 INFO L124 PetriNetUnfolderBase]: 4584/7123 cut-off events. [2024-06-27 18:53:47,172 INFO L125 PetriNetUnfolderBase]: For 123989/124034 co-relation queries the response was YES. [2024-06-27 18:53:47,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39116 conditions, 7123 events. 4584/7123 cut-off events. For 123989/124034 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 41970 event pairs, 1287 based on Foata normal form. 42/7017 useless extension candidates. Maximal degree in co-relation 39051. Up to 6367 conditions per place. [2024-06-27 18:53:47,221 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 219 selfloop transitions, 33 changer transitions 0/259 dead transitions. [2024-06-27 18:53:47,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 259 transitions, 2903 flow [2024-06-27 18:53:47,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:53:47,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:53:47,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 18:53:47,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:53:47,223 INFO L175 Difference]: Start difference. First operand has 139 places, 201 transitions, 2147 flow. Second operand 8 states and 192 transitions. [2024-06-27 18:53:47,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 259 transitions, 2903 flow [2024-06-27 18:53:47,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 259 transitions, 2669 flow, removed 93 selfloop flow, removed 4 redundant places. [2024-06-27 18:53:47,401 INFO L231 Difference]: Finished difference. Result has 143 places, 204 transitions, 2081 flow [2024-06-27 18:53:47,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2081, PETRI_PLACES=143, PETRI_TRANSITIONS=204} [2024-06-27 18:53:47,401 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 89 predicate places. [2024-06-27 18:53:47,402 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 204 transitions, 2081 flow [2024-06-27 18:53:47,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:47,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:47,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:47,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:53:47,402 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:47,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:47,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1187992355, now seen corresponding path program 5 times [2024-06-27 18:53:47,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:47,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575584222] [2024-06-27 18:53:47,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:47,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:47,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:49,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:49,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:49,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575584222] [2024-06-27 18:53:49,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575584222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:49,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:49,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:53:49,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873573418] [2024-06-27 18:53:49,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:49,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:53:49,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:49,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:53:49,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:53:49,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:53:49,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 204 transitions, 2081 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:49,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:49,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:53:49,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:51,059 INFO L124 PetriNetUnfolderBase]: 4330/6848 cut-off events. [2024-06-27 18:53:51,060 INFO L125 PetriNetUnfolderBase]: For 130950/130959 co-relation queries the response was YES. [2024-06-27 18:53:51,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38733 conditions, 6848 events. 4330/6848 cut-off events. For 130950/130959 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 40799 event pairs, 1270 based on Foata normal form. 11/6705 useless extension candidates. Maximal degree in co-relation 38666. Up to 6154 conditions per place. [2024-06-27 18:53:51,119 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 214 selfloop transitions, 25 changer transitions 0/251 dead transitions. [2024-06-27 18:53:51,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 251 transitions, 2776 flow [2024-06-27 18:53:51,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:53:51,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:53:51,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 18:53:51,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-27 18:53:51,122 INFO L175 Difference]: Start difference. First operand has 143 places, 204 transitions, 2081 flow. Second operand 7 states and 172 transitions. [2024-06-27 18:53:51,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 251 transitions, 2776 flow [2024-06-27 18:53:51,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 251 transitions, 2632 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-27 18:53:51,277 INFO L231 Difference]: Finished difference. Result has 144 places, 207 transitions, 2095 flow [2024-06-27 18:53:51,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1937, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2095, PETRI_PLACES=144, PETRI_TRANSITIONS=207} [2024-06-27 18:53:51,277 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 90 predicate places. [2024-06-27 18:53:51,277 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 207 transitions, 2095 flow [2024-06-27 18:53:51,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:51,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:51,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:51,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:53:51,278 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:51,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:51,278 INFO L85 PathProgramCache]: Analyzing trace with hash 28744547, now seen corresponding path program 6 times [2024-06-27 18:53:51,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:51,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280296205] [2024-06-27 18:53:51,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:51,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:53,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:53,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:53,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280296205] [2024-06-27 18:53:53,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280296205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:53,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:53,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:53:53,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231418559] [2024-06-27 18:53:53,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:53,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:53:53,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:53,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:53:53,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:53:53,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:53:53,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 207 transitions, 2095 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:53,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:53,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:53:53,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:55,268 INFO L124 PetriNetUnfolderBase]: 4623/7179 cut-off events. [2024-06-27 18:53:55,268 INFO L125 PetriNetUnfolderBase]: For 139465/139510 co-relation queries the response was YES. [2024-06-27 18:53:55,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40267 conditions, 7179 events. 4623/7179 cut-off events. For 139465/139510 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 42315 event pairs, 954 based on Foata normal form. 42/7073 useless extension candidates. Maximal degree in co-relation 40199. Up to 6415 conditions per place. [2024-06-27 18:53:55,322 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 222 selfloop transitions, 26 changer transitions 0/255 dead transitions. [2024-06-27 18:53:55,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 255 transitions, 2809 flow [2024-06-27 18:53:55,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:53:55,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:53:55,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 18:53:55,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-27 18:53:55,325 INFO L175 Difference]: Start difference. First operand has 144 places, 207 transitions, 2095 flow. Second operand 7 states and 167 transitions. [2024-06-27 18:53:55,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 255 transitions, 2809 flow [2024-06-27 18:53:55,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 255 transitions, 2675 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-27 18:53:55,520 INFO L231 Difference]: Finished difference. Result has 146 places, 210 transitions, 2127 flow [2024-06-27 18:53:55,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1961, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2127, PETRI_PLACES=146, PETRI_TRANSITIONS=210} [2024-06-27 18:53:55,525 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 92 predicate places. [2024-06-27 18:53:55,525 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 210 transitions, 2127 flow [2024-06-27 18:53:55,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:55,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:55,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:55,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:53:55,526 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:55,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:55,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1194494419, now seen corresponding path program 2 times [2024-06-27 18:53:55,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:55,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193245023] [2024-06-27 18:53:55,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:55,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:58,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:58,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:58,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193245023] [2024-06-27 18:53:58,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193245023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:58,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:58,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:53:58,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188214061] [2024-06-27 18:53:58,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:58,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:53:58,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:58,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:53:58,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:53:58,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:53:58,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 210 transitions, 2127 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:58,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:58,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:53:58,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:59,920 INFO L124 PetriNetUnfolderBase]: 4860/7554 cut-off events. [2024-06-27 18:53:59,921 INFO L125 PetriNetUnfolderBase]: For 169961/170006 co-relation queries the response was YES. [2024-06-27 18:53:59,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43868 conditions, 7554 events. 4860/7554 cut-off events. For 169961/170006 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 44984 event pairs, 1211 based on Foata normal form. 50/7456 useless extension candidates. Maximal degree in co-relation 43799. Up to 6075 conditions per place. [2024-06-27 18:53:59,981 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 223 selfloop transitions, 58 changer transitions 0/288 dead transitions. [2024-06-27 18:53:59,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 288 transitions, 3219 flow [2024-06-27 18:53:59,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:53:59,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:53:59,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-27 18:53:59,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 18:53:59,983 INFO L175 Difference]: Start difference. First operand has 146 places, 210 transitions, 2127 flow. Second operand 9 states and 225 transitions. [2024-06-27 18:53:59,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 288 transitions, 3219 flow [2024-06-27 18:54:00,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 288 transitions, 3067 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-27 18:54:00,253 INFO L231 Difference]: Finished difference. Result has 149 places, 214 transitions, 2266 flow [2024-06-27 18:54:00,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1975, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2266, PETRI_PLACES=149, PETRI_TRANSITIONS=214} [2024-06-27 18:54:00,255 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 95 predicate places. [2024-06-27 18:54:00,255 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 214 transitions, 2266 flow [2024-06-27 18:54:00,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:00,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:00,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:00,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:54:00,256 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:00,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:00,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1194486049, now seen corresponding path program 3 times [2024-06-27 18:54:00,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:00,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053117608] [2024-06-27 18:54:00,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:00,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:00,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:02,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:02,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:02,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053117608] [2024-06-27 18:54:02,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053117608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:02,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:02,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:54:02,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511072980] [2024-06-27 18:54:02,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:02,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:54:02,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:02,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:54:02,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:54:02,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:54:02,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 214 transitions, 2266 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:02,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:02,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:54:02,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:04,877 INFO L124 PetriNetUnfolderBase]: 4712/7464 cut-off events. [2024-06-27 18:54:04,877 INFO L125 PetriNetUnfolderBase]: For 190880/190888 co-relation queries the response was YES. [2024-06-27 18:54:04,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44766 conditions, 7464 events. 4712/7464 cut-off events. For 190880/190888 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 45286 event pairs, 1351 based on Foata normal form. 23/7336 useless extension candidates. Maximal degree in co-relation 44697. Up to 6356 conditions per place. [2024-06-27 18:54:04,936 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 224 selfloop transitions, 54 changer transitions 0/290 dead transitions. [2024-06-27 18:54:04,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 290 transitions, 3151 flow [2024-06-27 18:54:04,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:54:04,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:54:04,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 249 transitions. [2024-06-27 18:54:04,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51875 [2024-06-27 18:54:04,938 INFO L175 Difference]: Start difference. First operand has 149 places, 214 transitions, 2266 flow. Second operand 10 states and 249 transitions. [2024-06-27 18:54:04,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 290 transitions, 3151 flow [2024-06-27 18:54:05,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 290 transitions, 3021 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-27 18:54:05,198 INFO L231 Difference]: Finished difference. Result has 154 places, 216 transitions, 2347 flow [2024-06-27 18:54:05,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2146, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2347, PETRI_PLACES=154, PETRI_TRANSITIONS=216} [2024-06-27 18:54:05,199 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 100 predicate places. [2024-06-27 18:54:05,199 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 216 transitions, 2347 flow [2024-06-27 18:54:05,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:05,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:05,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:05,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:54:05,200 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:05,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:05,200 INFO L85 PathProgramCache]: Analyzing trace with hash 28929121, now seen corresponding path program 4 times [2024-06-27 18:54:05,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:05,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322680928] [2024-06-27 18:54:05,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:05,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:07,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:07,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:07,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322680928] [2024-06-27 18:54:07,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322680928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:07,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:07,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:54:07,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807942100] [2024-06-27 18:54:07,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:07,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:54:07,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:07,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:54:07,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:54:07,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:54:07,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 216 transitions, 2347 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:07,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:07,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:54:07,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:09,825 INFO L124 PetriNetUnfolderBase]: 5130/7967 cut-off events. [2024-06-27 18:54:09,826 INFO L125 PetriNetUnfolderBase]: For 194511/194556 co-relation queries the response was YES. [2024-06-27 18:54:09,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47317 conditions, 7967 events. 5130/7967 cut-off events. For 194511/194556 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 47791 event pairs, 1432 based on Foata normal form. 54/7873 useless extension candidates. Maximal degree in co-relation 47246. Up to 7077 conditions per place. [2024-06-27 18:54:09,881 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 223 selfloop transitions, 54 changer transitions 0/284 dead transitions. [2024-06-27 18:54:09,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 284 transitions, 3343 flow [2024-06-27 18:54:09,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:54:09,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:54:09,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 18:54:09,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-06-27 18:54:09,883 INFO L175 Difference]: Start difference. First operand has 154 places, 216 transitions, 2347 flow. Second operand 8 states and 194 transitions. [2024-06-27 18:54:09,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 284 transitions, 3343 flow [2024-06-27 18:54:10,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 284 transitions, 3208 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 18:54:10,160 INFO L231 Difference]: Finished difference. Result has 156 places, 228 transitions, 2635 flow [2024-06-27 18:54:10,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2212, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2635, PETRI_PLACES=156, PETRI_TRANSITIONS=228} [2024-06-27 18:54:10,160 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 102 predicate places. [2024-06-27 18:54:10,161 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 228 transitions, 2635 flow [2024-06-27 18:54:10,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:10,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:10,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:10,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:54:10,176 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:10,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:10,176 INFO L85 PathProgramCache]: Analyzing trace with hash -94332582, now seen corresponding path program 1 times [2024-06-27 18:54:10,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:10,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292535549] [2024-06-27 18:54:10,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:10,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:12,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:12,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:12,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292535549] [2024-06-27 18:54:12,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292535549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:12,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:12,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:54:12,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307538725] [2024-06-27 18:54:12,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:12,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:54:12,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:12,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:54:12,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:54:12,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:54:12,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 228 transitions, 2635 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:12,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:12,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:54:12,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:14,724 INFO L124 PetriNetUnfolderBase]: 4940/7905 cut-off events. [2024-06-27 18:54:14,725 INFO L125 PetriNetUnfolderBase]: For 208872/208881 co-relation queries the response was YES. [2024-06-27 18:54:14,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47467 conditions, 7905 events. 4940/7905 cut-off events. For 208872/208881 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 48339 event pairs, 915 based on Foata normal form. 19/7740 useless extension candidates. Maximal degree in co-relation 47393. Up to 6790 conditions per place. [2024-06-27 18:54:14,793 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 246 selfloop transitions, 37 changer transitions 0/295 dead transitions. [2024-06-27 18:54:14,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 295 transitions, 3468 flow [2024-06-27 18:54:14,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:54:14,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:54:14,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-27 18:54:14,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-27 18:54:14,795 INFO L175 Difference]: Start difference. First operand has 156 places, 228 transitions, 2635 flow. Second operand 9 states and 220 transitions. [2024-06-27 18:54:14,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 295 transitions, 3468 flow [2024-06-27 18:54:15,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 295 transitions, 3258 flow, removed 65 selfloop flow, removed 4 redundant places. [2024-06-27 18:54:15,096 INFO L231 Difference]: Finished difference. Result has 161 places, 230 transitions, 2600 flow [2024-06-27 18:54:15,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2425, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2600, PETRI_PLACES=161, PETRI_TRANSITIONS=230} [2024-06-27 18:54:15,097 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 107 predicate places. [2024-06-27 18:54:15,097 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 230 transitions, 2600 flow [2024-06-27 18:54:15,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:15,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:15,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:15,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:54:15,098 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:15,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:15,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1643761318, now seen corresponding path program 2 times [2024-06-27 18:54:15,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:15,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466726014] [2024-06-27 18:54:15,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:15,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:15,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:17,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:17,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:17,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466726014] [2024-06-27 18:54:17,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466726014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:17,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:17,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:54:17,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329592944] [2024-06-27 18:54:17,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:17,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:54:17,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:17,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:54:17,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:54:17,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:54:17,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 230 transitions, 2600 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:17,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:17,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:54:17,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:19,826 INFO L124 PetriNetUnfolderBase]: 5342/8389 cut-off events. [2024-06-27 18:54:19,826 INFO L125 PetriNetUnfolderBase]: For 218516/218559 co-relation queries the response was YES. [2024-06-27 18:54:19,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49951 conditions, 8389 events. 5342/8389 cut-off events. For 218516/218559 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 51089 event pairs, 1439 based on Foata normal form. 50/8261 useless extension candidates. Maximal degree in co-relation 49876. Up to 7423 conditions per place. [2024-06-27 18:54:19,886 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 260 selfloop transitions, 30 changer transitions 0/297 dead transitions. [2024-06-27 18:54:19,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 297 transitions, 3454 flow [2024-06-27 18:54:19,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:54:19,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:54:19,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-27 18:54:19,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-27 18:54:19,888 INFO L175 Difference]: Start difference. First operand has 161 places, 230 transitions, 2600 flow. Second operand 9 states and 212 transitions. [2024-06-27 18:54:19,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 297 transitions, 3454 flow [2024-06-27 18:54:20,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 297 transitions, 3309 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-27 18:54:20,180 INFO L231 Difference]: Finished difference. Result has 163 places, 232 transitions, 2620 flow [2024-06-27 18:54:20,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2455, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2620, PETRI_PLACES=163, PETRI_TRANSITIONS=232} [2024-06-27 18:54:20,180 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 109 predicate places. [2024-06-27 18:54:20,181 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 232 transitions, 2620 flow [2024-06-27 18:54:20,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:20,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:20,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:20,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:54:20,181 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:20,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:20,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1638254788, now seen corresponding path program 3 times [2024-06-27 18:54:20,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:20,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22997042] [2024-06-27 18:54:20,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:20,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:22,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:22,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:22,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22997042] [2024-06-27 18:54:22,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22997042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:22,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:22,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:54:22,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485514499] [2024-06-27 18:54:22,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:22,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:54:22,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:22,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:54:22,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:54:22,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:54:22,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 232 transitions, 2620 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:22,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:22,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:54:22,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:25,154 INFO L124 PetriNetUnfolderBase]: 5157/8244 cut-off events. [2024-06-27 18:54:25,155 INFO L125 PetriNetUnfolderBase]: For 236229/236238 co-relation queries the response was YES. [2024-06-27 18:54:25,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49836 conditions, 8244 events. 5157/8244 cut-off events. For 236229/236238 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 50833 event pairs, 1460 based on Foata normal form. 19/8079 useless extension candidates. Maximal degree in co-relation 49760. Up to 7266 conditions per place. [2024-06-27 18:54:25,225 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 231 selfloop transitions, 57 changer transitions 0/300 dead transitions. [2024-06-27 18:54:25,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 300 transitions, 3596 flow [2024-06-27 18:54:25,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:54:25,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:54:25,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 18:54:25,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162037037037037 [2024-06-27 18:54:25,227 INFO L175 Difference]: Start difference. First operand has 163 places, 232 transitions, 2620 flow. Second operand 9 states and 223 transitions. [2024-06-27 18:54:25,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 300 transitions, 3596 flow [2024-06-27 18:54:25,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 300 transitions, 3461 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-27 18:54:25,561 INFO L231 Difference]: Finished difference. Result has 166 places, 237 transitions, 2841 flow [2024-06-27 18:54:25,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2485, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2841, PETRI_PLACES=166, PETRI_TRANSITIONS=237} [2024-06-27 18:54:25,561 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 112 predicate places. [2024-06-27 18:54:25,561 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 237 transitions, 2841 flow [2024-06-27 18:54:25,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:25,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:25,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:25,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:54:25,562 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:25,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:25,562 INFO L85 PathProgramCache]: Analyzing trace with hash 282366425, now seen corresponding path program 1 times [2024-06-27 18:54:25,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:25,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786405540] [2024-06-27 18:54:25,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:25,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:27,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:27,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:27,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786405540] [2024-06-27 18:54:27,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786405540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:27,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:27,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:54:27,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834366677] [2024-06-27 18:54:27,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:27,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:54:27,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:27,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:54:27,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:54:27,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:54:27,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 237 transitions, 2841 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:27,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:27,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:54:27,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:29,522 INFO L124 PetriNetUnfolderBase]: 5476/8590 cut-off events. [2024-06-27 18:54:29,522 INFO L125 PetriNetUnfolderBase]: For 236418/236438 co-relation queries the response was YES. [2024-06-27 18:54:29,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51298 conditions, 8590 events. 5476/8590 cut-off events. For 236418/236438 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 52302 event pairs, 1487 based on Foata normal form. 19/8434 useless extension candidates. Maximal degree in co-relation 51220. Up to 7844 conditions per place. [2024-06-27 18:54:29,585 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 263 selfloop transitions, 23 changer transitions 0/293 dead transitions. [2024-06-27 18:54:29,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 293 transitions, 3945 flow [2024-06-27 18:54:29,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:54:29,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:54:29,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-27 18:54:29,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-27 18:54:29,586 INFO L175 Difference]: Start difference. First operand has 166 places, 237 transitions, 2841 flow. Second operand 6 states and 145 transitions. [2024-06-27 18:54:29,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 293 transitions, 3945 flow [2024-06-27 18:54:29,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 293 transitions, 3695 flow, removed 96 selfloop flow, removed 5 redundant places. [2024-06-27 18:54:29,934 INFO L231 Difference]: Finished difference. Result has 169 places, 249 transitions, 2834 flow [2024-06-27 18:54:29,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2591, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2834, PETRI_PLACES=169, PETRI_TRANSITIONS=249} [2024-06-27 18:54:29,934 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 115 predicate places. [2024-06-27 18:54:29,934 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 249 transitions, 2834 flow [2024-06-27 18:54:29,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:29,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:29,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:29,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:54:29,935 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:29,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:29,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1782377182, now seen corresponding path program 4 times [2024-06-27 18:54:29,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:29,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45109043] [2024-06-27 18:54:29,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:29,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:32,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:32,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:32,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45109043] [2024-06-27 18:54:32,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45109043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:32,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:32,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:54:32,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424012111] [2024-06-27 18:54:32,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:32,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:54:32,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:32,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:54:32,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:54:32,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:54:32,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 249 transitions, 2834 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:32,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:32,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:54:32,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:34,495 INFO L124 PetriNetUnfolderBase]: 5474/8595 cut-off events. [2024-06-27 18:54:34,495 INFO L125 PetriNetUnfolderBase]: For 237662/237705 co-relation queries the response was YES. [2024-06-27 18:54:34,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51571 conditions, 8595 events. 5474/8595 cut-off events. For 237662/237705 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 52446 event pairs, 1475 based on Foata normal form. 50/8466 useless extension candidates. Maximal degree in co-relation 51489. Up to 7638 conditions per place. [2024-06-27 18:54:34,568 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 251 selfloop transitions, 52 changer transitions 0/310 dead transitions. [2024-06-27 18:54:34,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 310 transitions, 3841 flow [2024-06-27 18:54:34,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:54:34,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:54:34,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 18:54:34,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026041666666666 [2024-06-27 18:54:34,570 INFO L175 Difference]: Start difference. First operand has 169 places, 249 transitions, 2834 flow. Second operand 8 states and 193 transitions. [2024-06-27 18:54:34,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 310 transitions, 3841 flow [2024-06-27 18:54:35,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 310 transitions, 3795 flow, removed 22 selfloop flow, removed 1 redundant places. [2024-06-27 18:54:35,049 INFO L231 Difference]: Finished difference. Result has 177 places, 254 transitions, 3150 flow [2024-06-27 18:54:35,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2788, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3150, PETRI_PLACES=177, PETRI_TRANSITIONS=254} [2024-06-27 18:54:35,049 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 123 predicate places. [2024-06-27 18:54:35,050 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 254 transitions, 3150 flow [2024-06-27 18:54:35,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:35,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:35,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:35,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:54:35,050 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:35,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:35,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1832447334, now seen corresponding path program 5 times [2024-06-27 18:54:35,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:35,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927177758] [2024-06-27 18:54:35,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:35,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:37,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:37,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:37,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927177758] [2024-06-27 18:54:37,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927177758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:37,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:37,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:54:37,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344086880] [2024-06-27 18:54:37,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:37,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:54:37,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:37,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:54:37,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:54:37,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:54:37,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 254 transitions, 3150 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:37,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:37,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:54:37,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:39,240 INFO L124 PetriNetUnfolderBase]: 5171/8264 cut-off events. [2024-06-27 18:54:39,240 INFO L125 PetriNetUnfolderBase]: For 244797/244806 co-relation queries the response was YES. [2024-06-27 18:54:39,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50395 conditions, 8264 events. 5171/8264 cut-off events. For 244797/244806 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 50889 event pairs, 1101 based on Foata normal form. 19/8098 useless extension candidates. Maximal degree in co-relation 50309. Up to 7235 conditions per place. [2024-06-27 18:54:39,306 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 271 selfloop transitions, 28 changer transitions 0/311 dead transitions. [2024-06-27 18:54:39,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 311 transitions, 3950 flow [2024-06-27 18:54:39,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:54:39,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:54:39,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 18:54:39,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-27 18:54:39,308 INFO L175 Difference]: Start difference. First operand has 177 places, 254 transitions, 3150 flow. Second operand 8 states and 196 transitions. [2024-06-27 18:54:39,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 311 transitions, 3950 flow [2024-06-27 18:54:39,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 311 transitions, 3667 flow, removed 117 selfloop flow, removed 4 redundant places. [2024-06-27 18:54:39,749 INFO L231 Difference]: Finished difference. Result has 180 places, 255 transitions, 2974 flow [2024-06-27 18:54:39,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2801, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2974, PETRI_PLACES=180, PETRI_TRANSITIONS=255} [2024-06-27 18:54:39,750 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 126 predicate places. [2024-06-27 18:54:39,750 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 255 transitions, 2974 flow [2024-06-27 18:54:39,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:39,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:39,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:39,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:54:39,751 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:39,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:39,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1256239858, now seen corresponding path program 1 times [2024-06-27 18:54:39,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:39,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440539123] [2024-06-27 18:54:39,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:39,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:41,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:41,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:41,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440539123] [2024-06-27 18:54:41,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440539123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:41,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:41,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:54:41,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672255624] [2024-06-27 18:54:41,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:41,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:54:41,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:41,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:54:41,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:54:41,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:54:41,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 255 transitions, 2974 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:41,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:41,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:54:41,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:44,105 INFO L124 PetriNetUnfolderBase]: 5344/8429 cut-off events. [2024-06-27 18:54:44,106 INFO L125 PetriNetUnfolderBase]: For 247848/247863 co-relation queries the response was YES. [2024-06-27 18:54:44,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51192 conditions, 8429 events. 5344/8429 cut-off events. For 247848/247863 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 51456 event pairs, 1431 based on Foata normal form. 18/8261 useless extension candidates. Maximal degree in co-relation 51104. Up to 7481 conditions per place. [2024-06-27 18:54:44,174 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 232 selfloop transitions, 38 changer transitions 0/286 dead transitions. [2024-06-27 18:54:44,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 286 transitions, 3728 flow [2024-06-27 18:54:44,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:54:44,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:54:44,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-27 18:54:44,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-27 18:54:44,177 INFO L175 Difference]: Start difference. First operand has 180 places, 255 transitions, 2974 flow. Second operand 6 states and 141 transitions. [2024-06-27 18:54:44,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 286 transitions, 3728 flow [2024-06-27 18:54:44,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 286 transitions, 3583 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-27 18:54:44,651 INFO L231 Difference]: Finished difference. Result has 180 places, 258 transitions, 2953 flow [2024-06-27 18:54:44,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2829, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2953, PETRI_PLACES=180, PETRI_TRANSITIONS=258} [2024-06-27 18:54:44,652 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 126 predicate places. [2024-06-27 18:54:44,652 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 258 transitions, 2953 flow [2024-06-27 18:54:44,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:44,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:44,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:44,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:54:44,653 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:44,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:44,653 INFO L85 PathProgramCache]: Analyzing trace with hash 309506615, now seen corresponding path program 2 times [2024-06-27 18:54:44,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:44,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258846316] [2024-06-27 18:54:44,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:44,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:46,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:46,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:46,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258846316] [2024-06-27 18:54:46,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258846316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:46,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:46,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:54:46,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582861097] [2024-06-27 18:54:46,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:46,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:54:46,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:46,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:54:46,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:54:46,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:54:46,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 258 transitions, 2953 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:46,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:46,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:54:46,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:48,577 INFO L124 PetriNetUnfolderBase]: 5224/8317 cut-off events. [2024-06-27 18:54:48,577 INFO L125 PetriNetUnfolderBase]: For 234116/234146 co-relation queries the response was YES. [2024-06-27 18:54:48,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50631 conditions, 8317 events. 5224/8317 cut-off events. For 234116/234146 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 51156 event pairs, 1457 based on Foata normal form. 16/8125 useless extension candidates. Maximal degree in co-relation 50542. Up to 7534 conditions per place. [2024-06-27 18:54:48,654 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 251 selfloop transitions, 29 changer transitions 0/292 dead transitions. [2024-06-27 18:54:48,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 292 transitions, 3782 flow [2024-06-27 18:54:48,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:54:48,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:54:48,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-27 18:54:48,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826388888888889 [2024-06-27 18:54:48,655 INFO L175 Difference]: Start difference. First operand has 180 places, 258 transitions, 2953 flow. Second operand 6 states and 139 transitions. [2024-06-27 18:54:48,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 292 transitions, 3782 flow [2024-06-27 18:54:49,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 292 transitions, 3698 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 18:54:49,332 INFO L231 Difference]: Finished difference. Result has 183 places, 263 transitions, 3028 flow [2024-06-27 18:54:49,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2873, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3028, PETRI_PLACES=183, PETRI_TRANSITIONS=263} [2024-06-27 18:54:49,335 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 129 predicate places. [2024-06-27 18:54:49,335 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 263 transitions, 3028 flow [2024-06-27 18:54:49,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:49,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:49,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:49,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:54:49,336 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:49,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:49,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1246475254, now seen corresponding path program 2 times [2024-06-27 18:54:49,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:49,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693783450] [2024-06-27 18:54:49,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:49,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:51,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:51,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:51,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693783450] [2024-06-27 18:54:51,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693783450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:51,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:51,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:54:51,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580459882] [2024-06-27 18:54:51,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:51,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:54:51,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:51,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:54:51,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:54:51,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:54:51,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 263 transitions, 3028 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:51,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:51,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:54:51,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:53,781 INFO L124 PetriNetUnfolderBase]: 5329/8409 cut-off events. [2024-06-27 18:54:53,782 INFO L125 PetriNetUnfolderBase]: For 235870/235885 co-relation queries the response was YES. [2024-06-27 18:54:53,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50395 conditions, 8409 events. 5329/8409 cut-off events. For 235870/235885 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 51304 event pairs, 1431 based on Foata normal form. 18/8241 useless extension candidates. Maximal degree in co-relation 50304. Up to 7388 conditions per place. [2024-06-27 18:54:53,861 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 241 selfloop transitions, 43 changer transitions 0/302 dead transitions. [2024-06-27 18:54:53,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 302 transitions, 3890 flow [2024-06-27 18:54:53,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:54:53,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:54:53,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 18:54:53,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-27 18:54:53,863 INFO L175 Difference]: Start difference. First operand has 183 places, 263 transitions, 3028 flow. Second operand 7 states and 163 transitions. [2024-06-27 18:54:53,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 302 transitions, 3890 flow [2024-06-27 18:54:54,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 302 transitions, 3824 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-27 18:54:54,362 INFO L231 Difference]: Finished difference. Result has 188 places, 266 transitions, 3092 flow [2024-06-27 18:54:54,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2962, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3092, PETRI_PLACES=188, PETRI_TRANSITIONS=266} [2024-06-27 18:54:54,362 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 134 predicate places. [2024-06-27 18:54:54,362 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 266 transitions, 3092 flow [2024-06-27 18:54:54,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:54,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:54,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:54,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:54:54,363 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:54,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:54,363 INFO L85 PathProgramCache]: Analyzing trace with hash -2001197966, now seen corresponding path program 1 times [2024-06-27 18:54:54,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:54,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546080753] [2024-06-27 18:54:54,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:54,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:56,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:56,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:56,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546080753] [2024-06-27 18:54:56,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546080753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:56,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:56,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:54:56,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925617042] [2024-06-27 18:54:56,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:56,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:54:56,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:56,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:54:56,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:54:56,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:54:56,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 266 transitions, 3092 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:56,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:56,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:54:56,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:58,310 INFO L124 PetriNetUnfolderBase]: 5261/8391 cut-off events. [2024-06-27 18:54:58,311 INFO L125 PetriNetUnfolderBase]: For 244127/244190 co-relation queries the response was YES. [2024-06-27 18:54:58,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51570 conditions, 8391 events. 5261/8391 cut-off events. For 244127/244190 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 51978 event pairs, 1474 based on Foata normal form. 51/8235 useless extension candidates. Maximal degree in co-relation 51477. Up to 7591 conditions per place. [2024-06-27 18:54:58,394 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 270 selfloop transitions, 20 changer transitions 0/302 dead transitions. [2024-06-27 18:54:58,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 302 transitions, 3974 flow [2024-06-27 18:54:58,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:54:58,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:54:58,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-27 18:54:58,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-27 18:54:58,395 INFO L175 Difference]: Start difference. First operand has 188 places, 266 transitions, 3092 flow. Second operand 6 states and 140 transitions. [2024-06-27 18:54:58,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 302 transitions, 3974 flow [2024-06-27 18:54:58,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 302 transitions, 3876 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 18:54:58,902 INFO L231 Difference]: Finished difference. Result has 190 places, 272 transitions, 3213 flow [2024-06-27 18:54:58,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2994, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3213, PETRI_PLACES=190, PETRI_TRANSITIONS=272} [2024-06-27 18:54:58,903 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 136 predicate places. [2024-06-27 18:54:58,903 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 272 transitions, 3213 flow [2024-06-27 18:54:58,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:58,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:58,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:58,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:54:58,904 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:58,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:58,904 INFO L85 PathProgramCache]: Analyzing trace with hash -2001077996, now seen corresponding path program 2 times [2024-06-27 18:54:58,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:58,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166763447] [2024-06-27 18:54:58,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:58,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:00,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:00,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:00,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166763447] [2024-06-27 18:55:00,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166763447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:00,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:00,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:55:00,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112278247] [2024-06-27 18:55:00,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:00,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:55:00,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:00,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:55:00,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:55:00,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:55:00,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 272 transitions, 3213 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:00,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:00,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:55:00,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:02,729 INFO L124 PetriNetUnfolderBase]: 5272/8406 cut-off events. [2024-06-27 18:55:02,729 INFO L125 PetriNetUnfolderBase]: For 253836/253899 co-relation queries the response was YES. [2024-06-27 18:55:02,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52346 conditions, 8406 events. 5272/8406 cut-off events. For 253836/253899 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 52076 event pairs, 1468 based on Foata normal form. 51/8250 useless extension candidates. Maximal degree in co-relation 52251. Up to 7603 conditions per place. [2024-06-27 18:55:02,797 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 274 selfloop transitions, 23 changer transitions 0/309 dead transitions. [2024-06-27 18:55:02,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 309 transitions, 4117 flow [2024-06-27 18:55:02,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:55:02,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:55:02,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-27 18:55:02,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-27 18:55:02,825 INFO L175 Difference]: Start difference. First operand has 190 places, 272 transitions, 3213 flow. Second operand 6 states and 135 transitions. [2024-06-27 18:55:02,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 309 transitions, 4117 flow [2024-06-27 18:55:03,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 309 transitions, 4003 flow, removed 51 selfloop flow, removed 2 redundant places. [2024-06-27 18:55:03,332 INFO L231 Difference]: Finished difference. Result has 195 places, 284 transitions, 3369 flow [2024-06-27 18:55:03,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3099, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3369, PETRI_PLACES=195, PETRI_TRANSITIONS=284} [2024-06-27 18:55:03,334 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 141 predicate places. [2024-06-27 18:55:03,334 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 284 transitions, 3369 flow [2024-06-27 18:55:03,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:03,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:03,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:03,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:55:03,334 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:03,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:03,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1242891506, now seen corresponding path program 1 times [2024-06-27 18:55:03,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:03,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590522003] [2024-06-27 18:55:03,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:03,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:05,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:05,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:05,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590522003] [2024-06-27 18:55:05,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590522003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:05,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:05,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:55:05,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719344207] [2024-06-27 18:55:05,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:05,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:55:05,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:05,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:55:05,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:55:05,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:55:05,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 284 transitions, 3369 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:05,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:05,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:55:05,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:08,513 INFO L124 PetriNetUnfolderBase]: 5383/8534 cut-off events. [2024-06-27 18:55:08,514 INFO L125 PetriNetUnfolderBase]: For 262460/262467 co-relation queries the response was YES. [2024-06-27 18:55:08,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53743 conditions, 8534 events. 5383/8534 cut-off events. For 262460/262467 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 52539 event pairs, 1436 based on Foata normal form. 7/8340 useless extension candidates. Maximal degree in co-relation 53645. Up to 7623 conditions per place. [2024-06-27 18:55:08,587 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 283 selfloop transitions, 24 changer transitions 0/325 dead transitions. [2024-06-27 18:55:08,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 325 transitions, 4307 flow [2024-06-27 18:55:08,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:55:08,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:55:08,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-27 18:55:08,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732142857142857 [2024-06-27 18:55:08,589 INFO L175 Difference]: Start difference. First operand has 195 places, 284 transitions, 3369 flow. Second operand 7 states and 159 transitions. [2024-06-27 18:55:08,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 325 transitions, 4307 flow [2024-06-27 18:55:09,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 325 transitions, 4206 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-06-27 18:55:09,110 INFO L231 Difference]: Finished difference. Result has 199 places, 286 transitions, 3358 flow [2024-06-27 18:55:09,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3281, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3358, PETRI_PLACES=199, PETRI_TRANSITIONS=286} [2024-06-27 18:55:09,111 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 145 predicate places. [2024-06-27 18:55:09,111 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 286 transitions, 3358 flow [2024-06-27 18:55:09,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:09,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:09,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:09,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:55:09,112 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:09,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:09,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1316274019, now seen corresponding path program 1 times [2024-06-27 18:55:09,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:09,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086843406] [2024-06-27 18:55:09,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:09,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:11,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:11,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:11,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086843406] [2024-06-27 18:55:11,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086843406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:11,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:11,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:55:11,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012172112] [2024-06-27 18:55:11,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:11,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:55:11,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:11,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:55:11,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:55:11,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:55:11,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 286 transitions, 3358 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:11,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:11,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:55:11,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:13,901 INFO L124 PetriNetUnfolderBase]: 5698/8946 cut-off events. [2024-06-27 18:55:13,901 INFO L125 PetriNetUnfolderBase]: For 271205/271225 co-relation queries the response was YES. [2024-06-27 18:55:13,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56192 conditions, 8946 events. 5698/8946 cut-off events. For 271205/271225 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 54941 event pairs, 1486 based on Foata normal form. 20/8775 useless extension candidates. Maximal degree in co-relation 56093. Up to 7999 conditions per place. [2024-06-27 18:55:13,988 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 316 selfloop transitions, 40 changer transitions 0/363 dead transitions. [2024-06-27 18:55:13,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 363 transitions, 4796 flow [2024-06-27 18:55:13,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:55:13,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:55:13,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-27 18:55:13,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-27 18:55:13,990 INFO L175 Difference]: Start difference. First operand has 199 places, 286 transitions, 3358 flow. Second operand 9 states and 208 transitions. [2024-06-27 18:55:13,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 363 transitions, 4796 flow [2024-06-27 18:55:14,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 363 transitions, 4734 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 18:55:14,601 INFO L231 Difference]: Finished difference. Result has 204 places, 297 transitions, 3518 flow [2024-06-27 18:55:14,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3303, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3518, PETRI_PLACES=204, PETRI_TRANSITIONS=297} [2024-06-27 18:55:14,602 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 150 predicate places. [2024-06-27 18:55:14,602 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 297 transitions, 3518 flow [2024-06-27 18:55:14,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:14,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:14,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:14,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:55:14,603 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:14,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:14,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1032477543, now seen corresponding path program 2 times [2024-06-27 18:55:14,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:14,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644673394] [2024-06-27 18:55:14,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:14,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:16,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:16,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644673394] [2024-06-27 18:55:16,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644673394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:16,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:16,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:55:16,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808401215] [2024-06-27 18:55:16,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:16,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:55:16,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:16,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:55:16,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:55:16,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:55:16,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 297 transitions, 3518 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:16,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:16,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:55:16,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:19,863 INFO L124 PetriNetUnfolderBase]: 5744/9015 cut-off events. [2024-06-27 18:55:19,863 INFO L125 PetriNetUnfolderBase]: For 282278/282278 co-relation queries the response was YES. [2024-06-27 18:55:19,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57716 conditions, 9015 events. 5744/9015 cut-off events. For 282278/282278 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 55248 event pairs, 1493 based on Foata normal form. 2/8822 useless extension candidates. Maximal degree in co-relation 57615. Up to 8039 conditions per place. [2024-06-27 18:55:19,954 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 304 selfloop transitions, 46 changer transitions 0/357 dead transitions. [2024-06-27 18:55:19,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 357 transitions, 4797 flow [2024-06-27 18:55:19,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:55:19,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:55:19,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 202 transitions. [2024-06-27 18:55:19,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4675925925925926 [2024-06-27 18:55:19,956 INFO L175 Difference]: Start difference. First operand has 204 places, 297 transitions, 3518 flow. Second operand 9 states and 202 transitions. [2024-06-27 18:55:19,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 357 transitions, 4797 flow [2024-06-27 18:55:20,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 357 transitions, 4729 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 18:55:20,573 INFO L231 Difference]: Finished difference. Result has 209 places, 300 transitions, 3586 flow [2024-06-27 18:55:20,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3458, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3586, PETRI_PLACES=209, PETRI_TRANSITIONS=300} [2024-06-27 18:55:20,574 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 155 predicate places. [2024-06-27 18:55:20,574 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 300 transitions, 3586 flow [2024-06-27 18:55:20,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:20,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:20,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:20,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:55:20,574 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:20,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:20,574 INFO L85 PathProgramCache]: Analyzing trace with hash 173615103, now seen corresponding path program 3 times [2024-06-27 18:55:20,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:20,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448017840] [2024-06-27 18:55:20,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:20,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:22,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:22,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:22,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448017840] [2024-06-27 18:55:22,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448017840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:22,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:22,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:55:22,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937256895] [2024-06-27 18:55:22,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:22,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:55:22,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:22,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:55:22,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:55:22,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:55:22,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 300 transitions, 3586 flow. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:22,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:22,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:55:22,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:25,217 INFO L124 PetriNetUnfolderBase]: 6244/9794 cut-off events. [2024-06-27 18:55:25,218 INFO L125 PetriNetUnfolderBase]: For 301931/301931 co-relation queries the response was YES. [2024-06-27 18:55:25,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63471 conditions, 9794 events. 6244/9794 cut-off events. For 301931/301931 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 60666 event pairs, 1507 based on Foata normal form. 4/9581 useless extension candidates. Maximal degree in co-relation 63368. Up to 8315 conditions per place. [2024-06-27 18:55:25,313 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 335 selfloop transitions, 94 changer transitions 0/436 dead transitions. [2024-06-27 18:55:25,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 436 transitions, 6124 flow [2024-06-27 18:55:25,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:55:25,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:55:25,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 18:55:25,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-27 18:55:25,315 INFO L175 Difference]: Start difference. First operand has 209 places, 300 transitions, 3586 flow. Second operand 8 states and 196 transitions. [2024-06-27 18:55:25,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 436 transitions, 6124 flow [2024-06-27 18:55:25,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 436 transitions, 5900 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 18:55:25,785 INFO L231 Difference]: Finished difference. Result has 214 places, 362 transitions, 4611 flow [2024-06-27 18:55:25,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3490, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4611, PETRI_PLACES=214, PETRI_TRANSITIONS=362} [2024-06-27 18:55:25,785 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 160 predicate places. [2024-06-27 18:55:25,785 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 362 transitions, 4611 flow [2024-06-27 18:55:25,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:25,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:25,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:25,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:55:25,786 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:25,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:25,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1098336541, now seen corresponding path program 4 times [2024-06-27 18:55:25,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:25,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298967077] [2024-06-27 18:55:25,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:25,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:28,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:28,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:28,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298967077] [2024-06-27 18:55:28,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298967077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:28,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:28,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:55:28,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120326340] [2024-06-27 18:55:28,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:28,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:55:28,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:28,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:55:28,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:55:28,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:55:28,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 362 transitions, 4611 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:28,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:28,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:55:28,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:30,980 INFO L124 PetriNetUnfolderBase]: 6238/9792 cut-off events. [2024-06-27 18:55:30,981 INFO L125 PetriNetUnfolderBase]: For 308797/308799 co-relation queries the response was YES. [2024-06-27 18:55:31,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65467 conditions, 9792 events. 6238/9792 cut-off events. For 308797/308799 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 60735 event pairs, 1522 based on Foata normal form. 2/9575 useless extension candidates. Maximal degree in co-relation 65359. Up to 8386 conditions per place. [2024-06-27 18:55:31,065 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 302 selfloop transitions, 95 changer transitions 0/404 dead transitions. [2024-06-27 18:55:31,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 404 transitions, 5722 flow [2024-06-27 18:55:31,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:55:31,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:55:31,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 18:55:31,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-27 18:55:31,067 INFO L175 Difference]: Start difference. First operand has 214 places, 362 transitions, 4611 flow. Second operand 7 states and 160 transitions. [2024-06-27 18:55:31,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 404 transitions, 5722 flow [2024-06-27 18:55:31,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 404 transitions, 5690 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-06-27 18:55:31,784 INFO L231 Difference]: Finished difference. Result has 220 places, 362 transitions, 4782 flow [2024-06-27 18:55:31,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4579, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4782, PETRI_PLACES=220, PETRI_TRANSITIONS=362} [2024-06-27 18:55:31,784 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 166 predicate places. [2024-06-27 18:55:31,784 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 362 transitions, 4782 flow [2024-06-27 18:55:31,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:31,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:31,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:31,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:55:31,786 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:31,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:31,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1998615857, now seen corresponding path program 1 times [2024-06-27 18:55:31,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:31,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593418099] [2024-06-27 18:55:31,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:31,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:34,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:34,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:34,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593418099] [2024-06-27 18:55:34,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593418099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:34,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:34,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:55:34,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098747722] [2024-06-27 18:55:34,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:34,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:55:34,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:34,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:55:34,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:55:34,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:55:34,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 362 transitions, 4782 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:34,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:34,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:55:34,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:37,261 INFO L124 PetriNetUnfolderBase]: 6025/9574 cut-off events. [2024-06-27 18:55:37,261 INFO L125 PetriNetUnfolderBase]: For 317809/317927 co-relation queries the response was YES. [2024-06-27 18:55:37,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65467 conditions, 9574 events. 6025/9574 cut-off events. For 317809/317927 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 60194 event pairs, 1527 based on Foata normal form. 99/9426 useless extension candidates. Maximal degree in co-relation 65356. Up to 8517 conditions per place. [2024-06-27 18:55:37,360 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 366 selfloop transitions, 30 changer transitions 0/412 dead transitions. [2024-06-27 18:55:37,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 412 transitions, 5948 flow [2024-06-27 18:55:37,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:55:37,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:55:37,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-27 18:55:37,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2024-06-27 18:55:37,362 INFO L175 Difference]: Start difference. First operand has 220 places, 362 transitions, 4782 flow. Second operand 7 states and 165 transitions. [2024-06-27 18:55:37,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 412 transitions, 5948 flow [2024-06-27 18:55:38,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 412 transitions, 5788 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 18:55:38,142 INFO L231 Difference]: Finished difference. Result has 223 places, 368 transitions, 4845 flow [2024-06-27 18:55:38,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4624, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4845, PETRI_PLACES=223, PETRI_TRANSITIONS=368} [2024-06-27 18:55:38,142 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 169 predicate places. [2024-06-27 18:55:38,143 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 368 transitions, 4845 flow [2024-06-27 18:55:38,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:38,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:38,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:38,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:55:38,143 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:38,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:38,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1907593517, now seen corresponding path program 2 times [2024-06-27 18:55:38,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:38,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030674546] [2024-06-27 18:55:38,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:38,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:40,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:40,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:40,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030674546] [2024-06-27 18:55:40,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030674546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:40,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:40,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:55:40,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142869561] [2024-06-27 18:55:40,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:40,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:55:40,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:40,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:55:40,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:55:40,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:55:40,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 368 transitions, 4845 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:40,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:40,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:55:40,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:43,220 INFO L124 PetriNetUnfolderBase]: 6056/9628 cut-off events. [2024-06-27 18:55:43,220 INFO L125 PetriNetUnfolderBase]: For 328620/328738 co-relation queries the response was YES. [2024-06-27 18:55:43,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66474 conditions, 9628 events. 6056/9628 cut-off events. For 328620/328738 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 60720 event pairs, 1528 based on Foata normal form. 99/9479 useless extension candidates. Maximal degree in co-relation 66360. Up to 8505 conditions per place. [2024-06-27 18:55:43,518 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 362 selfloop transitions, 31 changer transitions 0/409 dead transitions. [2024-06-27 18:55:43,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 409 transitions, 5969 flow [2024-06-27 18:55:43,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:55:43,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:55:43,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 18:55:43,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-27 18:55:43,519 INFO L175 Difference]: Start difference. First operand has 223 places, 368 transitions, 4845 flow. Second operand 6 states and 143 transitions. [2024-06-27 18:55:43,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 409 transitions, 5969 flow [2024-06-27 18:55:44,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 409 transitions, 5854 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-06-27 18:55:44,307 INFO L231 Difference]: Finished difference. Result has 226 places, 371 transitions, 4855 flow [2024-06-27 18:55:44,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4730, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4855, PETRI_PLACES=226, PETRI_TRANSITIONS=371} [2024-06-27 18:55:44,308 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 172 predicate places. [2024-06-27 18:55:44,308 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 371 transitions, 4855 flow [2024-06-27 18:55:44,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:44,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:44,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:44,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:55:44,308 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:44,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:44,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1907593362, now seen corresponding path program 1 times [2024-06-27 18:55:44,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:44,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234931209] [2024-06-27 18:55:44,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:44,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:47,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:47,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:47,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234931209] [2024-06-27 18:55:47,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234931209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:47,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:47,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:55:47,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940906497] [2024-06-27 18:55:47,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:47,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:55:47,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:47,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:55:47,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:55:47,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:55:47,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 371 transitions, 4855 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:47,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:47,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:55:47,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:49,521 INFO L124 PetriNetUnfolderBase]: 6386/10003 cut-off events. [2024-06-27 18:55:49,521 INFO L125 PetriNetUnfolderBase]: For 342512/342522 co-relation queries the response was YES. [2024-06-27 18:55:49,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69578 conditions, 10003 events. 6386/10003 cut-off events. For 342512/342522 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 62300 event pairs, 1639 based on Foata normal form. 10/9790 useless extension candidates. Maximal degree in co-relation 69462. Up to 9123 conditions per place. [2024-06-27 18:55:49,645 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 398 selfloop transitions, 19 changer transitions 0/424 dead transitions. [2024-06-27 18:55:49,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 424 transitions, 6141 flow [2024-06-27 18:55:49,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:55:49,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:55:49,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-27 18:55:49,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-27 18:55:49,646 INFO L175 Difference]: Start difference. First operand has 226 places, 371 transitions, 4855 flow. Second operand 7 states and 156 transitions. [2024-06-27 18:55:49,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 424 transitions, 6141 flow [2024-06-27 18:55:50,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 424 transitions, 6049 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 18:55:50,530 INFO L231 Difference]: Finished difference. Result has 232 places, 385 transitions, 5042 flow [2024-06-27 18:55:50,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4772, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5042, PETRI_PLACES=232, PETRI_TRANSITIONS=385} [2024-06-27 18:55:50,531 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 178 predicate places. [2024-06-27 18:55:50,531 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 385 transitions, 5042 flow [2024-06-27 18:55:50,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:50,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:50,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:50,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:55:50,532 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:50,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:50,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1072705392, now seen corresponding path program 2 times [2024-06-27 18:55:50,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:50,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816665679] [2024-06-27 18:55:50,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:50,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:52,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:52,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:52,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816665679] [2024-06-27 18:55:52,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816665679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:52,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:52,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:55:52,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529228551] [2024-06-27 18:55:52,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:52,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:55:52,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:52,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:55:52,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:55:52,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:55:52,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 385 transitions, 5042 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:52,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:52,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:55:52,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:55,551 INFO L124 PetriNetUnfolderBase]: 6448/9938 cut-off events. [2024-06-27 18:55:55,551 INFO L125 PetriNetUnfolderBase]: For 350593/350605 co-relation queries the response was YES. [2024-06-27 18:55:55,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70603 conditions, 9938 events. 6448/9938 cut-off events. For 350593/350605 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 60761 event pairs, 1619 based on Foata normal form. 12/9774 useless extension candidates. Maximal degree in co-relation 70483. Up to 9126 conditions per place. [2024-06-27 18:55:55,652 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 406 selfloop transitions, 26 changer transitions 0/439 dead transitions. [2024-06-27 18:55:55,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 439 transitions, 6483 flow [2024-06-27 18:55:55,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:55:55,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:55:55,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-27 18:55:55,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-27 18:55:55,653 INFO L175 Difference]: Start difference. First operand has 232 places, 385 transitions, 5042 flow. Second operand 7 states and 156 transitions. [2024-06-27 18:55:55,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 439 transitions, 6483 flow [2024-06-27 18:55:56,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 439 transitions, 6443 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-06-27 18:55:56,426 INFO L231 Difference]: Finished difference. Result has 240 places, 402 transitions, 5341 flow [2024-06-27 18:55:56,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5002, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5341, PETRI_PLACES=240, PETRI_TRANSITIONS=402} [2024-06-27 18:55:56,427 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 186 predicate places. [2024-06-27 18:55:56,427 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 402 transitions, 5341 flow [2024-06-27 18:55:56,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:56,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:56,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:56,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:55:56,428 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:56,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:56,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1072705547, now seen corresponding path program 3 times [2024-06-27 18:55:56,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:56,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376460633] [2024-06-27 18:55:56,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:56,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:59,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:59,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:59,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376460633] [2024-06-27 18:55:59,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376460633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:59,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:59,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:55:59,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591212214] [2024-06-27 18:55:59,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:59,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:55:59,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:59,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:55:59,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:55:59,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:55:59,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 402 transitions, 5341 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:59,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:59,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:55:59,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:01,745 INFO L124 PetriNetUnfolderBase]: 6217/9703 cut-off events. [2024-06-27 18:56:01,745 INFO L125 PetriNetUnfolderBase]: For 357759/357819 co-relation queries the response was YES. [2024-06-27 18:56:01,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70179 conditions, 9703 events. 6217/9703 cut-off events. For 357759/357819 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 60115 event pairs, 1604 based on Foata normal form. 40/9536 useless extension candidates. Maximal degree in co-relation 70054. Up to 8696 conditions per place. [2024-06-27 18:56:01,860 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 384 selfloop transitions, 33 changer transitions 0/444 dead transitions. [2024-06-27 18:56:01,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 444 transitions, 6525 flow [2024-06-27 18:56:01,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:56:01,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:56:01,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-27 18:56:01,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-27 18:56:01,861 INFO L175 Difference]: Start difference. First operand has 240 places, 402 transitions, 5341 flow. Second operand 7 states and 156 transitions. [2024-06-27 18:56:01,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 444 transitions, 6525 flow [2024-06-27 18:56:02,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 444 transitions, 6457 flow, removed 33 selfloop flow, removed 1 redundant places. [2024-06-27 18:56:02,742 INFO L231 Difference]: Finished difference. Result has 246 places, 406 transitions, 5461 flow [2024-06-27 18:56:02,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5273, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5461, PETRI_PLACES=246, PETRI_TRANSITIONS=406} [2024-06-27 18:56:02,742 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 192 predicate places. [2024-06-27 18:56:02,743 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 406 transitions, 5461 flow [2024-06-27 18:56:02,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:02,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:02,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:02,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:56:02,743 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:02,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:02,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1903868712, now seen corresponding path program 3 times [2024-06-27 18:56:02,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:02,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7119709] [2024-06-27 18:56:02,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:02,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:04,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:04,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:04,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7119709] [2024-06-27 18:56:04,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7119709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:04,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:04,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:56:04,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849061227] [2024-06-27 18:56:04,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:04,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:56:04,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:04,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:56:04,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:56:04,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:56:04,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 406 transitions, 5461 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:04,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:04,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:56:04,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:07,796 INFO L124 PetriNetUnfolderBase]: 6478/9991 cut-off events. [2024-06-27 18:56:07,797 INFO L125 PetriNetUnfolderBase]: For 375539/375551 co-relation queries the response was YES. [2024-06-27 18:56:07,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73093 conditions, 9991 events. 6478/9991 cut-off events. For 375539/375551 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 61255 event pairs, 1640 based on Foata normal form. 12/9823 useless extension candidates. Maximal degree in co-relation 72965. Up to 9240 conditions per place. [2024-06-27 18:56:07,910 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 416 selfloop transitions, 22 changer transitions 0/445 dead transitions. [2024-06-27 18:56:07,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 445 transitions, 6610 flow [2024-06-27 18:56:07,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:56:07,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:56:07,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-27 18:56:07,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-27 18:56:07,912 INFO L175 Difference]: Start difference. First operand has 246 places, 406 transitions, 5461 flow. Second operand 7 states and 150 transitions. [2024-06-27 18:56:07,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 445 transitions, 6610 flow [2024-06-27 18:56:08,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 445 transitions, 6452 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-27 18:56:08,742 INFO L231 Difference]: Finished difference. Result has 249 places, 414 transitions, 5472 flow [2024-06-27 18:56:08,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5303, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5472, PETRI_PLACES=249, PETRI_TRANSITIONS=414} [2024-06-27 18:56:08,743 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 195 predicate places. [2024-06-27 18:56:08,743 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 414 transitions, 5472 flow [2024-06-27 18:56:08,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:08,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:08,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:08,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:56:08,744 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:08,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:08,744 INFO L85 PathProgramCache]: Analyzing trace with hash -2145515234, now seen corresponding path program 1 times [2024-06-27 18:56:08,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:08,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757062087] [2024-06-27 18:56:08,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:08,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:11,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:11,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:11,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757062087] [2024-06-27 18:56:11,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757062087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:11,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:11,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:56:11,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246883625] [2024-06-27 18:56:11,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:11,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:56:11,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:11,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:56:11,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:56:11,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:56:11,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 414 transitions, 5472 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:11,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:11,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:56:11,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:14,082 INFO L124 PetriNetUnfolderBase]: 6516/10216 cut-off events. [2024-06-27 18:56:14,082 INFO L125 PetriNetUnfolderBase]: For 379517/379557 co-relation queries the response was YES. [2024-06-27 18:56:14,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73822 conditions, 10216 events. 6516/10216 cut-off events. For 379517/379557 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 63528 event pairs, 1222 based on Foata normal form. 38/10020 useless extension candidates. Maximal degree in co-relation 73692. Up to 8962 conditions per place. [2024-06-27 18:56:14,215 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 414 selfloop transitions, 57 changer transitions 0/478 dead transitions. [2024-06-27 18:56:14,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 478 transitions, 7083 flow [2024-06-27 18:56:14,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:56:14,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:56:14,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 18:56:14,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-27 18:56:14,217 INFO L175 Difference]: Start difference. First operand has 249 places, 414 transitions, 5472 flow. Second operand 7 states and 169 transitions. [2024-06-27 18:56:14,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 478 transitions, 7083 flow [2024-06-27 18:56:15,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 478 transitions, 7039 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 18:56:15,250 INFO L231 Difference]: Finished difference. Result has 254 places, 419 transitions, 5687 flow [2024-06-27 18:56:15,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5431, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5687, PETRI_PLACES=254, PETRI_TRANSITIONS=419} [2024-06-27 18:56:15,251 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 200 predicate places. [2024-06-27 18:56:15,251 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 419 transitions, 5687 flow [2024-06-27 18:56:15,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:15,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:15,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:15,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:56:15,252 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:15,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:15,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1033457794, now seen corresponding path program 2 times [2024-06-27 18:56:15,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:15,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102867551] [2024-06-27 18:56:15,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:15,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:17,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:17,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:17,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102867551] [2024-06-27 18:56:17,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102867551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:17,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:17,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:56:17,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800886378] [2024-06-27 18:56:17,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:17,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:56:17,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:17,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:56:17,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:56:17,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:56:17,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 419 transitions, 5687 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:17,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:17,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:56:17,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:20,581 INFO L124 PetriNetUnfolderBase]: 6554/10276 cut-off events. [2024-06-27 18:56:20,581 INFO L125 PetriNetUnfolderBase]: For 392716/392756 co-relation queries the response was YES. [2024-06-27 18:56:20,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75081 conditions, 10276 events. 6554/10276 cut-off events. For 392716/392756 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 64032 event pairs, 1564 based on Foata normal form. 38/10078 useless extension candidates. Maximal degree in co-relation 74949. Up to 9155 conditions per place. [2024-06-27 18:56:20,706 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 411 selfloop transitions, 56 changer transitions 0/474 dead transitions. [2024-06-27 18:56:20,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 474 transitions, 7093 flow [2024-06-27 18:56:20,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:56:20,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:56:20,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 18:56:20,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-27 18:56:20,719 INFO L175 Difference]: Start difference. First operand has 254 places, 419 transitions, 5687 flow. Second operand 7 states and 163 transitions. [2024-06-27 18:56:20,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 474 transitions, 7093 flow [2024-06-27 18:56:21,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 474 transitions, 6999 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-27 18:56:21,723 INFO L231 Difference]: Finished difference. Result has 258 places, 421 transitions, 5746 flow [2024-06-27 18:56:21,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5601, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5746, PETRI_PLACES=258, PETRI_TRANSITIONS=421} [2024-06-27 18:56:21,723 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 204 predicate places. [2024-06-27 18:56:21,723 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 421 transitions, 5746 flow [2024-06-27 18:56:21,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:21,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:21,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:21,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:56:21,724 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:21,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:21,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1026794530, now seen corresponding path program 1 times [2024-06-27 18:56:21,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:21,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277520330] [2024-06-27 18:56:21,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:21,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:24,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:24,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:24,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277520330] [2024-06-27 18:56:24,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277520330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:24,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:24,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:56:24,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112173002] [2024-06-27 18:56:24,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:24,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:56:24,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:24,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:56:24,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:56:24,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:56:24,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 421 transitions, 5746 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:24,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:24,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:56:24,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:27,087 INFO L124 PetriNetUnfolderBase]: 6608/10357 cut-off events. [2024-06-27 18:56:27,087 INFO L125 PetriNetUnfolderBase]: For 402016/402081 co-relation queries the response was YES. [2024-06-27 18:56:27,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76118 conditions, 10357 events. 6608/10357 cut-off events. For 402016/402081 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 64753 event pairs, 1578 based on Foata normal form. 59/10178 useless extension candidates. Maximal degree in co-relation 75984. Up to 8985 conditions per place. [2024-06-27 18:56:27,246 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 397 selfloop transitions, 80 changer transitions 0/484 dead transitions. [2024-06-27 18:56:27,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 484 transitions, 7608 flow [2024-06-27 18:56:27,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:56:27,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:56:27,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 18:56:27,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-27 18:56:27,248 INFO L175 Difference]: Start difference. First operand has 258 places, 421 transitions, 5746 flow. Second operand 7 states and 172 transitions. [2024-06-27 18:56:27,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 484 transitions, 7608 flow [2024-06-27 18:56:28,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 484 transitions, 7493 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 18:56:28,489 INFO L231 Difference]: Finished difference. Result has 261 places, 431 transitions, 6061 flow [2024-06-27 18:56:28,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5631, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6061, PETRI_PLACES=261, PETRI_TRANSITIONS=431} [2024-06-27 18:56:28,490 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 207 predicate places. [2024-06-27 18:56:28,490 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 431 transitions, 6061 flow [2024-06-27 18:56:28,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:28,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:28,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:28,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:56:28,495 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:28,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:28,495 INFO L85 PathProgramCache]: Analyzing trace with hash -572086952, now seen corresponding path program 2 times [2024-06-27 18:56:28,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:28,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497758840] [2024-06-27 18:56:28,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:28,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:30,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:30,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:30,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497758840] [2024-06-27 18:56:30,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497758840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:30,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:30,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:56:30,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418388962] [2024-06-27 18:56:30,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:30,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:56:30,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:30,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:56:30,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:56:30,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:56:30,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 431 transitions, 6061 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:30,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:30,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:56:30,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:34,061 INFO L124 PetriNetUnfolderBase]: 6657/10434 cut-off events. [2024-06-27 18:56:34,062 INFO L125 PetriNetUnfolderBase]: For 420099/420164 co-relation queries the response was YES. [2024-06-27 18:56:34,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77858 conditions, 10434 events. 6657/10434 cut-off events. For 420099/420164 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 65315 event pairs, 1583 based on Foata normal form. 59/10253 useless extension candidates. Maximal degree in co-relation 77722. Up to 9036 conditions per place. [2024-06-27 18:56:34,183 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 394 selfloop transitions, 86 changer transitions 0/487 dead transitions. [2024-06-27 18:56:34,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 487 transitions, 7824 flow [2024-06-27 18:56:34,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:56:34,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:56:34,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-27 18:56:34,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:56:34,184 INFO L175 Difference]: Start difference. First operand has 261 places, 431 transitions, 6061 flow. Second operand 7 states and 168 transitions. [2024-06-27 18:56:34,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 487 transitions, 7824 flow [2024-06-27 18:56:35,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 487 transitions, 7711 flow, removed 40 selfloop flow, removed 2 redundant places. [2024-06-27 18:56:35,370 INFO L231 Difference]: Finished difference. Result has 267 places, 438 transitions, 6370 flow [2024-06-27 18:56:35,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5968, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6370, PETRI_PLACES=267, PETRI_TRANSITIONS=438} [2024-06-27 18:56:35,371 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 213 predicate places. [2024-06-27 18:56:35,371 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 438 transitions, 6370 flow [2024-06-27 18:56:35,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:35,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:35,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:35,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:56:35,371 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:35,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:35,372 INFO L85 PathProgramCache]: Analyzing trace with hash 598703416, now seen corresponding path program 3 times [2024-06-27 18:56:35,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:35,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928430175] [2024-06-27 18:56:35,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:35,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:37,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:37,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:37,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928430175] [2024-06-27 18:56:37,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928430175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:37,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:37,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:56:37,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594125630] [2024-06-27 18:56:37,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:37,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:56:37,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:37,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:56:37,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:56:37,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:56:37,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 438 transitions, 6370 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:37,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:37,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:56:37,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:41,010 INFO L124 PetriNetUnfolderBase]: 6652/10413 cut-off events. [2024-06-27 18:56:41,010 INFO L125 PetriNetUnfolderBase]: For 427906/427908 co-relation queries the response was YES. [2024-06-27 18:56:41,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78307 conditions, 10413 events. 6652/10413 cut-off events. For 427906/427908 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 64951 event pairs, 1580 based on Foata normal form. 2/10171 useless extension candidates. Maximal degree in co-relation 78168. Up to 9287 conditions per place. [2024-06-27 18:56:41,119 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 413 selfloop transitions, 62 changer transitions 0/482 dead transitions. [2024-06-27 18:56:41,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 482 transitions, 7683 flow [2024-06-27 18:56:41,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:56:41,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:56:41,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-27 18:56:41,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-27 18:56:41,121 INFO L175 Difference]: Start difference. First operand has 267 places, 438 transitions, 6370 flow. Second operand 7 states and 156 transitions. [2024-06-27 18:56:41,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 482 transitions, 7683 flow [2024-06-27 18:56:42,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 482 transitions, 7556 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-27 18:56:42,361 INFO L231 Difference]: Finished difference. Result has 271 places, 439 transitions, 6385 flow [2024-06-27 18:56:42,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6243, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6385, PETRI_PLACES=271, PETRI_TRANSITIONS=439} [2024-06-27 18:56:42,361 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 217 predicate places. [2024-06-27 18:56:42,362 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 439 transitions, 6385 flow [2024-06-27 18:56:42,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:42,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:42,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:42,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:56:42,362 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:42,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:42,363 INFO L85 PathProgramCache]: Analyzing trace with hash -463462022, now seen corresponding path program 3 times [2024-06-27 18:56:42,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:42,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212363399] [2024-06-27 18:56:42,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:42,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:42,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:44,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:44,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:44,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212363399] [2024-06-27 18:56:44,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212363399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:44,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:44,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:56:44,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007536288] [2024-06-27 18:56:44,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:44,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:56:44,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:44,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:56:44,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:56:44,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:56:44,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 439 transitions, 6385 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:44,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:44,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:56:44,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:47,942 INFO L124 PetriNetUnfolderBase]: 6649/10426 cut-off events. [2024-06-27 18:56:47,943 INFO L125 PetriNetUnfolderBase]: For 430961/431026 co-relation queries the response was YES. [2024-06-27 18:56:48,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78200 conditions, 10426 events. 6649/10426 cut-off events. For 430961/431026 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 65324 event pairs, 1582 based on Foata normal form. 59/10244 useless extension candidates. Maximal degree in co-relation 78060. Up to 9135 conditions per place. [2024-06-27 18:56:48,068 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 394 selfloop transitions, 79 changer transitions 0/480 dead transitions. [2024-06-27 18:56:48,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 480 transitions, 7753 flow [2024-06-27 18:56:48,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:56:48,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:56:48,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-27 18:56:48,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-27 18:56:48,070 INFO L175 Difference]: Start difference. First operand has 271 places, 439 transitions, 6385 flow. Second operand 6 states and 147 transitions. [2024-06-27 18:56:48,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 480 transitions, 7753 flow [2024-06-27 18:56:49,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 480 transitions, 7614 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:56:49,398 INFO L231 Difference]: Finished difference. Result has 272 places, 439 transitions, 6426 flow [2024-06-27 18:56:49,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6246, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6426, PETRI_PLACES=272, PETRI_TRANSITIONS=439} [2024-06-27 18:56:49,398 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 218 predicate places. [2024-06-27 18:56:49,398 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 439 transitions, 6426 flow [2024-06-27 18:56:49,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:49,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:49,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:49,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:56:49,399 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:49,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:49,400 INFO L85 PathProgramCache]: Analyzing trace with hash -2072500520, now seen corresponding path program 4 times [2024-06-27 18:56:49,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:49,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235265815] [2024-06-27 18:56:49,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:49,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:51,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:51,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:51,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235265815] [2024-06-27 18:56:51,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235265815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:51,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:51,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:56:51,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26707223] [2024-06-27 18:56:51,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:51,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:56:51,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:51,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:56:51,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:56:51,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:56:51,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 439 transitions, 6426 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:51,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:51,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:56:51,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:56:55,469 INFO L124 PetriNetUnfolderBase]: 6646/10422 cut-off events. [2024-06-27 18:56:55,470 INFO L125 PetriNetUnfolderBase]: For 435559/435624 co-relation queries the response was YES. [2024-06-27 18:56:55,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78314 conditions, 10422 events. 6646/10422 cut-off events. For 435559/435624 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 65317 event pairs, 1565 based on Foata normal form. 59/10240 useless extension candidates. Maximal degree in co-relation 78173. Up to 9132 conditions per place. [2024-06-27 18:56:55,590 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 390 selfloop transitions, 96 changer transitions 0/493 dead transitions. [2024-06-27 18:56:55,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 493 transitions, 7790 flow [2024-06-27 18:56:55,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:56:55,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:56:55,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-27 18:56:55,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4869791666666667 [2024-06-27 18:56:55,591 INFO L175 Difference]: Start difference. First operand has 272 places, 439 transitions, 6426 flow. Second operand 8 states and 187 transitions. [2024-06-27 18:56:55,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 493 transitions, 7790 flow [2024-06-27 18:56:56,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 493 transitions, 7578 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 18:56:56,964 INFO L231 Difference]: Finished difference. Result has 274 places, 441 transitions, 6469 flow [2024-06-27 18:56:56,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6226, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6469, PETRI_PLACES=274, PETRI_TRANSITIONS=441} [2024-06-27 18:56:56,965 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 220 predicate places. [2024-06-27 18:56:56,965 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 441 transitions, 6469 flow [2024-06-27 18:56:56,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:56,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:56:56,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:56:56,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:56:56,966 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:56:56,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:56:56,966 INFO L85 PathProgramCache]: Analyzing trace with hash -260168138, now seen corresponding path program 5 times [2024-06-27 18:56:56,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:56:56,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565290522] [2024-06-27 18:56:56,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:56:56,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:56:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:56:59,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:56:59,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:56:59,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565290522] [2024-06-27 18:56:59,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565290522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:56:59,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:56:59,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:56:59,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397047621] [2024-06-27 18:56:59,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:56:59,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:56:59,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:56:59,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:56:59,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:56:59,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:56:59,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 441 transitions, 6469 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:56:59,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:56:59,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:56:59,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:02,403 INFO L124 PetriNetUnfolderBase]: 6643/10399 cut-off events. [2024-06-27 18:57:02,404 INFO L125 PetriNetUnfolderBase]: For 434845/434872 co-relation queries the response was YES. [2024-06-27 18:57:02,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78186 conditions, 10399 events. 6643/10399 cut-off events. For 434845/434872 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 64953 event pairs, 1598 based on Foata normal form. 18/10174 useless extension candidates. Maximal degree in co-relation 78045. Up to 9020 conditions per place. [2024-06-27 18:57:02,550 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 374 selfloop transitions, 99 changer transitions 0/480 dead transitions. [2024-06-27 18:57:02,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 480 transitions, 7761 flow [2024-06-27 18:57:02,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:57:02,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:57:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-27 18:57:02,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732142857142857 [2024-06-27 18:57:02,552 INFO L175 Difference]: Start difference. First operand has 274 places, 441 transitions, 6469 flow. Second operand 7 states and 159 transitions. [2024-06-27 18:57:02,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 480 transitions, 7761 flow [2024-06-27 18:57:04,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 480 transitions, 7522 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 18:57:04,237 INFO L231 Difference]: Finished difference. Result has 275 places, 443 transitions, 6476 flow [2024-06-27 18:57:04,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6238, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6476, PETRI_PLACES=275, PETRI_TRANSITIONS=443} [2024-06-27 18:57:04,238 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 221 predicate places. [2024-06-27 18:57:04,238 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 443 transitions, 6476 flow [2024-06-27 18:57:04,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:04,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:04,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:04,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:57:04,239 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:04,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:04,239 INFO L85 PathProgramCache]: Analyzing trace with hash -259770935, now seen corresponding path program 1 times [2024-06-27 18:57:04,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:04,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159674599] [2024-06-27 18:57:04,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:04,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:07,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:07,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:07,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159674599] [2024-06-27 18:57:07,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159674599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:07,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:07,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:57:07,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751787472] [2024-06-27 18:57:07,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:07,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:57:07,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:07,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:57:07,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:57:07,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:57:07,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 443 transitions, 6476 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:07,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:07,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:57:07,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:10,303 INFO L124 PetriNetUnfolderBase]: 6423/10207 cut-off events. [2024-06-27 18:57:10,303 INFO L125 PetriNetUnfolderBase]: For 440312/440362 co-relation queries the response was YES. [2024-06-27 18:57:10,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76710 conditions, 10207 events. 6423/10207 cut-off events. For 440312/440362 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 65175 event pairs, 1527 based on Foata normal form. 43/9974 useless extension candidates. Maximal degree in co-relation 76569. Up to 8580 conditions per place. [2024-06-27 18:57:10,428 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 366 selfloop transitions, 72 changer transitions 0/485 dead transitions. [2024-06-27 18:57:10,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 485 transitions, 7706 flow [2024-06-27 18:57:10,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:57:10,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:57:10,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 18:57:10,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-27 18:57:10,430 INFO L175 Difference]: Start difference. First operand has 275 places, 443 transitions, 6476 flow. Second operand 7 states and 163 transitions. [2024-06-27 18:57:10,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 485 transitions, 7706 flow [2024-06-27 18:57:11,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 485 transitions, 7530 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 18:57:11,700 INFO L231 Difference]: Finished difference. Result has 278 places, 445 transitions, 6508 flow [2024-06-27 18:57:11,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6300, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6508, PETRI_PLACES=278, PETRI_TRANSITIONS=445} [2024-06-27 18:57:11,701 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 224 predicate places. [2024-06-27 18:57:11,701 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 445 transitions, 6508 flow [2024-06-27 18:57:11,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:11,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:11,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:11,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:57:11,701 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:11,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:11,702 INFO L85 PathProgramCache]: Analyzing trace with hash 433203593, now seen corresponding path program 2 times [2024-06-27 18:57:11,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:11,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400768463] [2024-06-27 18:57:11,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:11,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:14,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:14,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:14,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400768463] [2024-06-27 18:57:14,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400768463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:14,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:14,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:57:14,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068399196] [2024-06-27 18:57:14,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:14,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:57:14,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:14,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:57:14,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:57:14,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:57:14,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 445 transitions, 6508 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:14,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:14,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:57:14,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:18,246 INFO L124 PetriNetUnfolderBase]: 6490/10323 cut-off events. [2024-06-27 18:57:18,246 INFO L125 PetriNetUnfolderBase]: For 457146/457196 co-relation queries the response was YES. [2024-06-27 18:57:18,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78223 conditions, 10323 events. 6490/10323 cut-off events. For 457146/457196 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 66159 event pairs, 1542 based on Foata normal form. 43/10086 useless extension candidates. Maximal degree in co-relation 78080. Up to 8670 conditions per place. [2024-06-27 18:57:18,367 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 373 selfloop transitions, 75 changer transitions 0/495 dead transitions. [2024-06-27 18:57:18,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 495 transitions, 7850 flow [2024-06-27 18:57:18,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:57:18,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:57:18,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-27 18:57:18,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 18:57:18,369 INFO L175 Difference]: Start difference. First operand has 278 places, 445 transitions, 6508 flow. Second operand 8 states and 184 transitions. [2024-06-27 18:57:18,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 495 transitions, 7850 flow [2024-06-27 18:57:19,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 495 transitions, 7694 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 18:57:19,574 INFO L231 Difference]: Finished difference. Result has 281 places, 447 transitions, 6562 flow [2024-06-27 18:57:19,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6352, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6562, PETRI_PLACES=281, PETRI_TRANSITIONS=447} [2024-06-27 18:57:19,574 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 227 predicate places. [2024-06-27 18:57:19,575 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 447 transitions, 6562 flow [2024-06-27 18:57:19,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:19,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:19,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:19,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:57:19,575 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:19,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:19,576 INFO L85 PathProgramCache]: Analyzing trace with hash 448440713, now seen corresponding path program 3 times [2024-06-27 18:57:19,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:19,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402351552] [2024-06-27 18:57:19,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:19,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:22,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:22,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:22,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402351552] [2024-06-27 18:57:22,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402351552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:22,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:22,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:57:22,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049606994] [2024-06-27 18:57:22,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:22,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:57:22,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:22,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:57:22,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:57:22,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:57:22,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 447 transitions, 6562 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:22,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:22,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:57:22,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:25,782 INFO L124 PetriNetUnfolderBase]: 6484/10289 cut-off events. [2024-06-27 18:57:25,783 INFO L125 PetriNetUnfolderBase]: For 458748/458798 co-relation queries the response was YES. [2024-06-27 18:57:25,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78148 conditions, 10289 events. 6484/10289 cut-off events. For 458748/458798 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 65572 event pairs, 1503 based on Foata normal form. 43/10060 useless extension candidates. Maximal degree in co-relation 78004. Up to 8448 conditions per place. [2024-06-27 18:57:25,907 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 375 selfloop transitions, 75 changer transitions 0/497 dead transitions. [2024-06-27 18:57:25,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 497 transitions, 7910 flow [2024-06-27 18:57:25,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:57:25,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:57:25,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-27 18:57:25,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 18:57:25,909 INFO L175 Difference]: Start difference. First operand has 281 places, 447 transitions, 6562 flow. Second operand 8 states and 184 transitions. [2024-06-27 18:57:25,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 497 transitions, 7910 flow [2024-06-27 18:57:27,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 497 transitions, 7734 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 18:57:27,280 INFO L231 Difference]: Finished difference. Result has 283 places, 449 transitions, 6599 flow [2024-06-27 18:57:27,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6386, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6599, PETRI_PLACES=283, PETRI_TRANSITIONS=449} [2024-06-27 18:57:27,280 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 229 predicate places. [2024-06-27 18:57:27,280 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 449 transitions, 6599 flow [2024-06-27 18:57:27,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:27,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:27,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:27,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:57:27,281 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:27,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:27,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1827608557, now seen corresponding path program 1 times [2024-06-27 18:57:27,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:27,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133515546] [2024-06-27 18:57:27,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:27,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:30,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:30,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:30,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133515546] [2024-06-27 18:57:30,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133515546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:30,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:30,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:57:30,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322192040] [2024-06-27 18:57:30,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:30,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:57:30,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:30,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:57:30,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:57:31,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:57:31,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 449 transitions, 6599 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:31,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:31,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:57:31,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:34,223 INFO L124 PetriNetUnfolderBase]: 6643/10489 cut-off events. [2024-06-27 18:57:34,223 INFO L125 PetriNetUnfolderBase]: For 484644/484723 co-relation queries the response was YES. [2024-06-27 18:57:34,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81065 conditions, 10489 events. 6643/10489 cut-off events. For 484644/484723 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 66625 event pairs, 1437 based on Foata normal form. 77/10314 useless extension candidates. Maximal degree in co-relation 80920. Up to 9046 conditions per place. [2024-06-27 18:57:34,350 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 444 selfloop transitions, 39 changer transitions 0/513 dead transitions. [2024-06-27 18:57:34,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 513 transitions, 8259 flow [2024-06-27 18:57:34,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:57:34,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:57:34,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 18:57:34,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026041666666666 [2024-06-27 18:57:34,351 INFO L175 Difference]: Start difference. First operand has 283 places, 449 transitions, 6599 flow. Second operand 8 states and 193 transitions. [2024-06-27 18:57:34,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 513 transitions, 8259 flow [2024-06-27 18:57:36,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 513 transitions, 8078 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 18:57:36,110 INFO L231 Difference]: Finished difference. Result has 286 places, 454 transitions, 6687 flow [2024-06-27 18:57:36,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6418, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6687, PETRI_PLACES=286, PETRI_TRANSITIONS=454} [2024-06-27 18:57:36,111 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 232 predicate places. [2024-06-27 18:57:36,111 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 454 transitions, 6687 flow [2024-06-27 18:57:36,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:36,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:36,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:36,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:57:36,115 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:36,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:36,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1101283881, now seen corresponding path program 1 times [2024-06-27 18:57:36,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:36,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887643494] [2024-06-27 18:57:36,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:36,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:38,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:38,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:38,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887643494] [2024-06-27 18:57:38,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887643494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:38,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:38,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:57:38,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386554349] [2024-06-27 18:57:38,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:38,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:57:38,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:38,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:57:38,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:57:38,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:57:38,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 454 transitions, 6687 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:38,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:38,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:57:38,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:42,224 INFO L124 PetriNetUnfolderBase]: 7101/11093 cut-off events. [2024-06-27 18:57:42,225 INFO L125 PetriNetUnfolderBase]: For 505192/505204 co-relation queries the response was YES. [2024-06-27 18:57:42,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85212 conditions, 11093 events. 7101/11093 cut-off events. For 505192/505204 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 70128 event pairs, 1699 based on Foata normal form. 12/10847 useless extension candidates. Maximal degree in co-relation 85065. Up to 9749 conditions per place. [2024-06-27 18:57:42,347 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 473 selfloop transitions, 69 changer transitions 0/549 dead transitions. [2024-06-27 18:57:42,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 549 transitions, 9129 flow [2024-06-27 18:57:42,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:57:42,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:57:42,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 18:57:42,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026041666666666 [2024-06-27 18:57:42,349 INFO L175 Difference]: Start difference. First operand has 286 places, 454 transitions, 6687 flow. Second operand 8 states and 193 transitions. [2024-06-27 18:57:42,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 549 transitions, 9129 flow [2024-06-27 18:57:43,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 549 transitions, 9024 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-27 18:57:43,900 INFO L231 Difference]: Finished difference. Result has 293 places, 479 transitions, 7285 flow [2024-06-27 18:57:43,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6586, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7285, PETRI_PLACES=293, PETRI_TRANSITIONS=479} [2024-06-27 18:57:43,901 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 239 predicate places. [2024-06-27 18:57:43,901 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 479 transitions, 7285 flow [2024-06-27 18:57:43,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:43,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:43,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:43,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:57:43,902 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:43,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:43,902 INFO L85 PathProgramCache]: Analyzing trace with hash 991347923, now seen corresponding path program 2 times [2024-06-27 18:57:43,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:43,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422557285] [2024-06-27 18:57:43,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:43,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:46,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:46,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:46,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422557285] [2024-06-27 18:57:46,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422557285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:46,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:46,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:57:46,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908225845] [2024-06-27 18:57:46,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:46,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:57:46,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:46,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:57:46,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:57:46,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:57:46,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 479 transitions, 7285 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:46,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:46,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:57:46,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:50,004 INFO L124 PetriNetUnfolderBase]: 6786/10753 cut-off events. [2024-06-27 18:57:50,004 INFO L125 PetriNetUnfolderBase]: For 513659/513738 co-relation queries the response was YES. [2024-06-27 18:57:50,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84538 conditions, 10753 events. 6786/10753 cut-off events. For 513659/513738 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 68835 event pairs, 1533 based on Foata normal form. 77/10562 useless extension candidates. Maximal degree in co-relation 84386. Up to 9157 conditions per place. [2024-06-27 18:57:50,117 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 420 selfloop transitions, 101 changer transitions 0/555 dead transitions. [2024-06-27 18:57:50,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 555 transitions, 9432 flow [2024-06-27 18:57:50,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:57:50,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:57:50,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 18:57:50,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973958333333333 [2024-06-27 18:57:50,119 INFO L175 Difference]: Start difference. First operand has 293 places, 479 transitions, 7285 flow. Second operand 8 states and 191 transitions. [2024-06-27 18:57:50,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 555 transitions, 9432 flow [2024-06-27 18:57:51,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 555 transitions, 9228 flow, removed 74 selfloop flow, removed 3 redundant places. [2024-06-27 18:57:51,661 INFO L231 Difference]: Finished difference. Result has 300 places, 499 transitions, 7991 flow [2024-06-27 18:57:51,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7103, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7991, PETRI_PLACES=300, PETRI_TRANSITIONS=499} [2024-06-27 18:57:51,662 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 246 predicate places. [2024-06-27 18:57:51,662 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 499 transitions, 7991 flow [2024-06-27 18:57:51,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:51,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:57:51,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:57:51,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:57:51,663 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:57:51,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:57:51,663 INFO L85 PathProgramCache]: Analyzing trace with hash 994144557, now seen corresponding path program 2 times [2024-06-27 18:57:51,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:57:51,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73354385] [2024-06-27 18:57:51,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:57:51,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:57:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:57:55,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:57:55,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:57:55,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73354385] [2024-06-27 18:57:55,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73354385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:57:55,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:57:55,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:57:55,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545435412] [2024-06-27 18:57:55,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:57:55,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:57:55,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:57:55,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:57:55,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:57:55,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:57:55,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 499 transitions, 7991 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:57:55,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:57:55,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:57:55,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:57:58,765 INFO L124 PetriNetUnfolderBase]: 7151/11041 cut-off events. [2024-06-27 18:57:58,765 INFO L125 PetriNetUnfolderBase]: For 531744/531756 co-relation queries the response was YES. [2024-06-27 18:57:58,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88280 conditions, 11041 events. 7151/11041 cut-off events. For 531744/531756 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 69194 event pairs, 1703 based on Foata normal form. 12/10840 useless extension candidates. Maximal degree in co-relation 88125. Up to 10129 conditions per place. [2024-06-27 18:57:58,883 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 527 selfloop transitions, 25 changer transitions 0/559 dead transitions. [2024-06-27 18:57:58,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 559 transitions, 9615 flow [2024-06-27 18:57:58,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:57:58,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:57:58,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 197 transitions. [2024-06-27 18:57:58,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45601851851851855 [2024-06-27 18:57:58,885 INFO L175 Difference]: Start difference. First operand has 300 places, 499 transitions, 7991 flow. Second operand 9 states and 197 transitions. [2024-06-27 18:57:58,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 559 transitions, 9615 flow [2024-06-27 18:58:00,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 559 transitions, 9366 flow, removed 94 selfloop flow, removed 3 redundant places. [2024-06-27 18:58:00,745 INFO L231 Difference]: Finished difference. Result has 307 places, 505 transitions, 7889 flow [2024-06-27 18:58:00,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7742, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7889, PETRI_PLACES=307, PETRI_TRANSITIONS=505} [2024-06-27 18:58:00,745 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 253 predicate places. [2024-06-27 18:58:00,746 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 505 transitions, 7889 flow [2024-06-27 18:58:00,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:00,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:58:00,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:58:00,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:58:00,746 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:58:00,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:58:00,747 INFO L85 PathProgramCache]: Analyzing trace with hash 994144433, now seen corresponding path program 3 times [2024-06-27 18:58:00,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:58:00,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631641405] [2024-06-27 18:58:00,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:58:00,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:58:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:03,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:03,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:03,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631641405] [2024-06-27 18:58:03,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631641405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:03,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:03,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:58:03,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301955391] [2024-06-27 18:58:03,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:03,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:58:03,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:03,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:58:03,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:58:03,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:58:03,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 505 transitions, 7889 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:03,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:03,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:58:03,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:58:07,185 INFO L124 PetriNetUnfolderBase]: 6886/10763 cut-off events. [2024-06-27 18:58:07,186 INFO L125 PetriNetUnfolderBase]: For 533414/533493 co-relation queries the response was YES. [2024-06-27 18:58:07,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86706 conditions, 10763 events. 6886/10763 cut-off events. For 533414/533493 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 68485 event pairs, 1577 based on Foata normal form. 77/10614 useless extension candidates. Maximal degree in co-relation 86549. Up to 9457 conditions per place. [2024-06-27 18:58:07,310 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 478 selfloop transitions, 46 changer transitions 0/560 dead transitions. [2024-06-27 18:58:07,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 560 transitions, 9468 flow [2024-06-27 18:58:07,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:58:07,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:58:07,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-27 18:58:07,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 18:58:07,311 INFO L175 Difference]: Start difference. First operand has 307 places, 505 transitions, 7889 flow. Second operand 8 states and 184 transitions. [2024-06-27 18:58:07,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 560 transitions, 9468 flow [2024-06-27 18:58:09,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 560 transitions, 9409 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-27 18:58:09,126 INFO L231 Difference]: Finished difference. Result has 312 places, 507 transitions, 7990 flow [2024-06-27 18:58:09,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7830, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7990, PETRI_PLACES=312, PETRI_TRANSITIONS=507} [2024-06-27 18:58:09,126 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 258 predicate places. [2024-06-27 18:58:09,127 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 507 transitions, 7990 flow [2024-06-27 18:58:09,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:09,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:58:09,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:58:09,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:58:09,127 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:58:09,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:58:09,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1964926707, now seen corresponding path program 1 times [2024-06-27 18:58:09,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:58:09,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202568206] [2024-06-27 18:58:09,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:58:09,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:58:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:11,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:11,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:11,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202568206] [2024-06-27 18:58:11,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202568206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:11,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:11,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:58:11,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340020777] [2024-06-27 18:58:11,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:11,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:58:11,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:11,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:58:11,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:58:11,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:58:11,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 507 transitions, 7990 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:11,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:11,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:58:11,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:58:15,176 INFO L124 PetriNetUnfolderBase]: 7240/11322 cut-off events. [2024-06-27 18:58:15,177 INFO L125 PetriNetUnfolderBase]: For 541790/541802 co-relation queries the response was YES. [2024-06-27 18:58:15,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90339 conditions, 11322 events. 7240/11322 cut-off events. For 541790/541802 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 71887 event pairs, 1745 based on Foata normal form. 11/11068 useless extension candidates. Maximal degree in co-relation 90180. Up to 10206 conditions per place. [2024-06-27 18:58:15,343 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 497 selfloop transitions, 47 changer transitions 0/551 dead transitions. [2024-06-27 18:58:15,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 551 transitions, 9495 flow [2024-06-27 18:58:15,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:58:15,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:58:15,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-27 18:58:15,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-27 18:58:15,345 INFO L175 Difference]: Start difference. First operand has 312 places, 507 transitions, 7990 flow. Second operand 7 states and 157 transitions. [2024-06-27 18:58:15,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 551 transitions, 9495 flow [2024-06-27 18:58:17,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 551 transitions, 9309 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-27 18:58:17,445 INFO L231 Difference]: Finished difference. Result has 312 places, 511 transitions, 7994 flow [2024-06-27 18:58:17,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7818, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7994, PETRI_PLACES=312, PETRI_TRANSITIONS=511} [2024-06-27 18:58:17,446 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 258 predicate places. [2024-06-27 18:58:17,446 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 511 transitions, 7994 flow [2024-06-27 18:58:17,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:17,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:58:17,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:58:17,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:58:17,447 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:58:17,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:58:17,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1109435727, now seen corresponding path program 3 times [2024-06-27 18:58:17,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:58:17,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738807395] [2024-06-27 18:58:17,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:58:17,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:58:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:20,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:20,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:20,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738807395] [2024-06-27 18:58:20,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738807395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:20,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:20,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:58:20,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926973686] [2024-06-27 18:58:20,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:20,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:58:20,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:20,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:58:20,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:58:20,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:58:20,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 511 transitions, 7994 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:20,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:20,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:58:20,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:58:24,589 INFO L124 PetriNetUnfolderBase]: 7814/12127 cut-off events. [2024-06-27 18:58:24,590 INFO L125 PetriNetUnfolderBase]: For 640564/640576 co-relation queries the response was YES. [2024-06-27 18:58:24,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100478 conditions, 12127 events. 7814/12127 cut-off events. For 640564/640576 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 76821 event pairs, 1666 based on Foata normal form. 12/11875 useless extension candidates. Maximal degree in co-relation 100319. Up to 9954 conditions per place. [2024-06-27 18:58:24,749 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 485 selfloop transitions, 141 changer transitions 0/633 dead transitions. [2024-06-27 18:58:24,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 633 transitions, 11026 flow [2024-06-27 18:58:24,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:58:24,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:58:24,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 235 transitions. [2024-06-27 18:58:24,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-27 18:58:24,751 INFO L175 Difference]: Start difference. First operand has 312 places, 511 transitions, 7994 flow. Second operand 10 states and 235 transitions. [2024-06-27 18:58:24,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 633 transitions, 11026 flow [2024-06-27 18:58:27,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 633 transitions, 10924 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:58:27,350 INFO L231 Difference]: Finished difference. Result has 320 places, 560 transitions, 9351 flow [2024-06-27 18:58:27,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7896, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9351, PETRI_PLACES=320, PETRI_TRANSITIONS=560} [2024-06-27 18:58:27,350 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 266 predicate places. [2024-06-27 18:58:27,351 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 560 transitions, 9351 flow [2024-06-27 18:58:27,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:27,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:58:27,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:58:27,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:58:27,351 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:58:27,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:58:27,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1105867727, now seen corresponding path program 4 times [2024-06-27 18:58:27,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:58:27,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419827300] [2024-06-27 18:58:27,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:58:27,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:58:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:30,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:30,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:30,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419827300] [2024-06-27 18:58:30,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419827300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:30,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:30,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:58:30,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750989916] [2024-06-27 18:58:30,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:30,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:58:30,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:30,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:58:30,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:58:30,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:58:30,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 560 transitions, 9351 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:30,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:30,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:58:30,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:58:34,842 INFO L124 PetriNetUnfolderBase]: 7827/12346 cut-off events. [2024-06-27 18:58:34,842 INFO L125 PetriNetUnfolderBase]: For 733110/733405 co-relation queries the response was YES. [2024-06-27 18:58:34,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109575 conditions, 12346 events. 7827/12346 cut-off events. For 733110/733405 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 80163 event pairs, 1621 based on Foata normal form. 105/12129 useless extension candidates. Maximal degree in co-relation 109412. Up to 9905 conditions per place. [2024-06-27 18:58:34,989 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 454 selfloop transitions, 178 changer transitions 0/676 dead transitions. [2024-06-27 18:58:34,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 676 transitions, 12827 flow [2024-06-27 18:58:34,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:58:34,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:58:34,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-27 18:58:34,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-27 18:58:34,993 INFO L175 Difference]: Start difference. First operand has 320 places, 560 transitions, 9351 flow. Second operand 9 states and 213 transitions. [2024-06-27 18:58:34,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 676 transitions, 12827 flow [2024-06-27 18:58:37,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 676 transitions, 12506 flow, removed 140 selfloop flow, removed 3 redundant places. [2024-06-27 18:58:37,967 INFO L231 Difference]: Finished difference. Result has 328 places, 622 transitions, 11502 flow [2024-06-27 18:58:37,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9128, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11502, PETRI_PLACES=328, PETRI_TRANSITIONS=622} [2024-06-27 18:58:37,968 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 274 predicate places. [2024-06-27 18:58:37,968 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 622 transitions, 11502 flow [2024-06-27 18:58:37,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:37,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:58:37,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:58:37,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:58:37,969 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:58:37,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:58:37,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1109613357, now seen corresponding path program 4 times [2024-06-27 18:58:37,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:58:37,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549890417] [2024-06-27 18:58:37,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:58:37,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:58:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:40,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:40,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:40,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549890417] [2024-06-27 18:58:40,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549890417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:40,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:40,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:58:40,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35857905] [2024-06-27 18:58:40,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:40,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:58:40,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:40,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:58:40,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:58:40,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:58:40,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 622 transitions, 11502 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:40,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:40,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:58:40,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:58:45,455 INFO L124 PetriNetUnfolderBase]: 8331/12845 cut-off events. [2024-06-27 18:58:45,455 INFO L125 PetriNetUnfolderBase]: For 772226/772244 co-relation queries the response was YES. [2024-06-27 18:58:45,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118232 conditions, 12845 events. 8331/12845 cut-off events. For 772226/772244 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 81722 event pairs, 1920 based on Foata normal form. 18/12603 useless extension candidates. Maximal degree in co-relation 118065. Up to 11654 conditions per place. [2024-06-27 18:58:45,643 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 634 selfloop transitions, 91 changer transitions 0/732 dead transitions. [2024-06-27 18:58:45,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 732 transitions, 14942 flow [2024-06-27 18:58:45,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:58:45,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:58:45,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 211 transitions. [2024-06-27 18:58:45,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4395833333333333 [2024-06-27 18:58:45,644 INFO L175 Difference]: Start difference. First operand has 328 places, 622 transitions, 11502 flow. Second operand 10 states and 211 transitions. [2024-06-27 18:58:45,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 732 transitions, 14942 flow [2024-06-27 18:58:48,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 732 transitions, 13916 flow, removed 445 selfloop flow, removed 5 redundant places. [2024-06-27 18:58:48,992 INFO L231 Difference]: Finished difference. Result has 336 places, 681 transitions, 12435 flow [2024-06-27 18:58:48,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10721, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12435, PETRI_PLACES=336, PETRI_TRANSITIONS=681} [2024-06-27 18:58:48,993 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 282 predicate places. [2024-06-27 18:58:48,993 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 681 transitions, 12435 flow [2024-06-27 18:58:48,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:48,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:58:48,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:58:48,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:58:48,994 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:58:48,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:58:48,994 INFO L85 PathProgramCache]: Analyzing trace with hash -589793168, now seen corresponding path program 1 times [2024-06-27 18:58:48,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:58:48,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826464896] [2024-06-27 18:58:48,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:58:48,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:58:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:49,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:49,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:49,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826464896] [2024-06-27 18:58:49,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826464896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:49,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:49,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:58:49,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861341788] [2024-06-27 18:58:49,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:49,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:58:49,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:49,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:58:49,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:58:49,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 18:58:49,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 681 transitions, 12435 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:49,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:49,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 18:58:49,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:58:52,173 INFO L124 PetriNetUnfolderBase]: 5483/8923 cut-off events. [2024-06-27 18:58:52,173 INFO L125 PetriNetUnfolderBase]: For 661493/662501 co-relation queries the response was YES. [2024-06-27 18:58:52,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82305 conditions, 8923 events. 5483/8923 cut-off events. For 661493/662501 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 58758 event pairs, 900 based on Foata normal form. 599/9143 useless extension candidates. Maximal degree in co-relation 82156. Up to 3766 conditions per place. [2024-06-27 18:58:52,304 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 248 selfloop transitions, 87 changer transitions 0/472 dead transitions. [2024-06-27 18:58:52,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 472 transitions, 8734 flow [2024-06-27 18:58:52,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:58:52,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:58:52,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-06-27 18:58:52,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6197916666666666 [2024-06-27 18:58:52,305 INFO L175 Difference]: Start difference. First operand has 336 places, 681 transitions, 12435 flow. Second operand 4 states and 119 transitions. [2024-06-27 18:58:52,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 472 transitions, 8734 flow [2024-06-27 18:58:54,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 472 transitions, 7210 flow, removed 420 selfloop flow, removed 62 redundant places. [2024-06-27 18:58:54,753 INFO L231 Difference]: Finished difference. Result has 278 places, 402 transitions, 5761 flow [2024-06-27 18:58:54,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5239, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=5761, PETRI_PLACES=278, PETRI_TRANSITIONS=402} [2024-06-27 18:58:54,754 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 224 predicate places. [2024-06-27 18:58:54,754 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 402 transitions, 5761 flow [2024-06-27 18:58:54,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:54,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:58:54,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:58:54,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:58:54,754 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:58:54,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:58:54,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1513449222, now seen corresponding path program 1 times [2024-06-27 18:58:54,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:58:54,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717075265] [2024-06-27 18:58:54,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:58:54,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:58:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:58:57,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:58:57,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:58:57,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717075265] [2024-06-27 18:58:57,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717075265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:58:57,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:58:57,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:58:57,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625872164] [2024-06-27 18:58:57,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:58:57,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:58:57,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:58:57,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:58:57,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:58:57,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:58:57,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 402 transitions, 5761 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:58:57,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:58:57,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:58:57,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:01,754 INFO L124 PetriNetUnfolderBase]: 7352/11590 cut-off events. [2024-06-27 18:59:01,755 INFO L125 PetriNetUnfolderBase]: For 632050/632061 co-relation queries the response was YES. [2024-06-27 18:59:01,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94385 conditions, 11590 events. 7352/11590 cut-off events. For 632050/632061 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 73644 event pairs, 2191 based on Foata normal form. 18/11392 useless extension candidates. Maximal degree in co-relation 94260. Up to 9825 conditions per place. [2024-06-27 18:59:01,887 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 401 selfloop transitions, 110 changer transitions 4/522 dead transitions. [2024-06-27 18:59:01,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 522 transitions, 8082 flow [2024-06-27 18:59:01,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:59:01,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:59:01,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-27 18:59:01,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-27 18:59:01,889 INFO L175 Difference]: Start difference. First operand has 278 places, 402 transitions, 5761 flow. Second operand 9 states and 220 transitions. [2024-06-27 18:59:01,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 522 transitions, 8082 flow [2024-06-27 18:59:03,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 522 transitions, 8039 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 18:59:03,457 INFO L231 Difference]: Finished difference. Result has 285 places, 441 transitions, 6608 flow [2024-06-27 18:59:03,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5724, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6608, PETRI_PLACES=285, PETRI_TRANSITIONS=441} [2024-06-27 18:59:03,458 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 231 predicate places. [2024-06-27 18:59:03,458 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 441 transitions, 6608 flow [2024-06-27 18:59:03,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:03,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:03,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:59:03,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:59:03,458 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:03,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:03,459 INFO L85 PathProgramCache]: Analyzing trace with hash -852599204, now seen corresponding path program 2 times [2024-06-27 18:59:03,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:03,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274890467] [2024-06-27 18:59:03,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:03,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:06,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:59:06,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:06,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274890467] [2024-06-27 18:59:06,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274890467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:06,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:06,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:59:06,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889915978] [2024-06-27 18:59:06,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:06,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:59:06,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:06,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:59:06,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:59:06,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:59:06,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 441 transitions, 6608 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:06,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:06,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:59:06,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:10,440 INFO L124 PetriNetUnfolderBase]: 7682/12124 cut-off events. [2024-06-27 18:59:10,440 INFO L125 PetriNetUnfolderBase]: For 706133/706147 co-relation queries the response was YES. [2024-06-27 18:59:10,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99723 conditions, 12124 events. 7682/12124 cut-off events. For 706133/706147 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 77221 event pairs, 2115 based on Foata normal form. 17/11883 useless extension candidates. Maximal degree in co-relation 99593. Up to 9863 conditions per place. [2024-06-27 18:59:10,577 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 441 selfloop transitions, 129 changer transitions 0/577 dead transitions. [2024-06-27 18:59:10,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 577 transitions, 9538 flow [2024-06-27 18:59:10,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:59:10,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:59:10,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 253 transitions. [2024-06-27 18:59:10,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392361111111111 [2024-06-27 18:59:10,578 INFO L175 Difference]: Start difference. First operand has 285 places, 441 transitions, 6608 flow. Second operand 12 states and 253 transitions. [2024-06-27 18:59:10,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 577 transitions, 9538 flow [2024-06-27 18:59:12,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 577 transitions, 9277 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-27 18:59:12,462 INFO L231 Difference]: Finished difference. Result has 301 places, 500 transitions, 7899 flow [2024-06-27 18:59:12,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6410, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7899, PETRI_PLACES=301, PETRI_TRANSITIONS=500} [2024-06-27 18:59:12,463 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 247 predicate places. [2024-06-27 18:59:12,463 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 500 transitions, 7899 flow [2024-06-27 18:59:12,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:12,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:12,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:59:12,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:59:12,464 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:12,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:12,464 INFO L85 PathProgramCache]: Analyzing trace with hash -557023814, now seen corresponding path program 3 times [2024-06-27 18:59:12,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:12,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499733008] [2024-06-27 18:59:12,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:12,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:59:15,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:15,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499733008] [2024-06-27 18:59:15,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499733008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:15,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:15,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:59:15,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215611998] [2024-06-27 18:59:15,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:15,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:59:15,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:15,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:59:15,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:59:15,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:59:15,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 500 transitions, 7899 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:15,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:15,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:59:15,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:19,867 INFO L124 PetriNetUnfolderBase]: 8378/13319 cut-off events. [2024-06-27 18:59:19,867 INFO L125 PetriNetUnfolderBase]: For 820141/820168 co-relation queries the response was YES. [2024-06-27 18:59:19,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107947 conditions, 13319 events. 8378/13319 cut-off events. For 820141/820168 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 87117 event pairs, 2696 based on Foata normal form. 64/13069 useless extension candidates. Maximal degree in co-relation 107810. Up to 11181 conditions per place. [2024-06-27 18:59:20,033 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 418 selfloop transitions, 128 changer transitions 0/553 dead transitions. [2024-06-27 18:59:20,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 553 transitions, 9400 flow [2024-06-27 18:59:20,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:59:20,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:59:20,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-27 18:59:20,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 18:59:20,035 INFO L175 Difference]: Start difference. First operand has 301 places, 500 transitions, 7899 flow. Second operand 10 states and 200 transitions. [2024-06-27 18:59:20,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 553 transitions, 9400 flow [2024-06-27 18:59:22,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 553 transitions, 9388 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-27 18:59:22,533 INFO L231 Difference]: Finished difference. Result has 310 places, 504 transitions, 8229 flow [2024-06-27 18:59:22,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7887, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8229, PETRI_PLACES=310, PETRI_TRANSITIONS=504} [2024-06-27 18:59:22,533 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 256 predicate places. [2024-06-27 18:59:22,533 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 504 transitions, 8229 flow [2024-06-27 18:59:22,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:22,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:22,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:59:22,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:59:22,534 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:22,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:22,534 INFO L85 PathProgramCache]: Analyzing trace with hash -554917144, now seen corresponding path program 4 times [2024-06-27 18:59:22,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:22,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242960110] [2024-06-27 18:59:22,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:22,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:25,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:59:25,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:25,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242960110] [2024-06-27 18:59:25,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242960110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:25,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:25,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:59:25,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931682670] [2024-06-27 18:59:25,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:25,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:59:25,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:25,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:59:25,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:59:25,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:59:25,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 504 transitions, 8229 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:25,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:25,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:59:25,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:29,940 INFO L124 PetriNetUnfolderBase]: 8922/14119 cut-off events. [2024-06-27 18:59:29,940 INFO L125 PetriNetUnfolderBase]: For 845147/845174 co-relation queries the response was YES. [2024-06-27 18:59:30,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115289 conditions, 14119 events. 8922/14119 cut-off events. For 845147/845174 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 92650 event pairs, 2647 based on Foata normal form. 56/13861 useless extension candidates. Maximal degree in co-relation 115150. Up to 11269 conditions per place. [2024-06-27 18:59:30,131 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 424 selfloop transitions, 137 changer transitions 0/568 dead transitions. [2024-06-27 18:59:30,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 568 transitions, 9891 flow [2024-06-27 18:59:30,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:59:30,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:59:30,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-06-27 18:59:30,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42234848484848486 [2024-06-27 18:59:30,133 INFO L175 Difference]: Start difference. First operand has 310 places, 504 transitions, 8229 flow. Second operand 11 states and 223 transitions. [2024-06-27 18:59:30,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 568 transitions, 9891 flow [2024-06-27 18:59:32,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 568 transitions, 9643 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 18:59:32,565 INFO L231 Difference]: Finished difference. Result has 313 places, 508 transitions, 8338 flow [2024-06-27 18:59:32,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7981, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8338, PETRI_PLACES=313, PETRI_TRANSITIONS=508} [2024-06-27 18:59:32,566 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 259 predicate places. [2024-06-27 18:59:32,566 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 508 transitions, 8338 flow [2024-06-27 18:59:32,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:32,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:59:32,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:59:32,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:59:32,567 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:59:32,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:59:32,567 INFO L85 PathProgramCache]: Analyzing trace with hash -387333828, now seen corresponding path program 5 times [2024-06-27 18:59:32,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:59:32,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201556145] [2024-06-27 18:59:32,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:59:32,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:59:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:59:35,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:59:35,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:59:35,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201556145] [2024-06-27 18:59:35,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201556145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:59:35,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:59:35,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:59:35,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853529683] [2024-06-27 18:59:35,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:59:35,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:59:35,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:59:35,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:59:35,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:59:35,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-27 18:59:35,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 508 transitions, 8338 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:59:35,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:59:35,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-27 18:59:35,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:59:40,693 INFO L124 PetriNetUnfolderBase]: 9360/14912 cut-off events. [2024-06-27 18:59:40,693 INFO L125 PetriNetUnfolderBase]: For 856487/856495 co-relation queries the response was YES. [2024-06-27 18:59:40,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121815 conditions, 14912 events. 9360/14912 cut-off events. For 856487/856495 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 99499 event pairs, 3074 based on Foata normal form. 23/14569 useless extension candidates. Maximal degree in co-relation 121675. Up to 13000 conditions per place. [2024-06-27 18:59:41,094 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 449 selfloop transitions, 141 changer transitions 0/597 dead transitions. [2024-06-27 18:59:41,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 597 transitions, 10633 flow [2024-06-27 18:59:41,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:59:41,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:59:41,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 246 transitions. [2024-06-27 18:59:41,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942307692307692 [2024-06-27 18:59:41,097 INFO L175 Difference]: Start difference. First operand has 313 places, 508 transitions, 8338 flow. Second operand 13 states and 246 transitions. [2024-06-27 18:59:41,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 597 transitions, 10633 flow