./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix009.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix009.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix009.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix009.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:05:51,959 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:05:52,270 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:05:52,274 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:05:52,274 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:05:52,297 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:05:52,298 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:05:52,298 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:05:52,299 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:05:52,299 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:05:52,300 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:05:52,300 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:05:52,301 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:05:52,301 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:05:52,301 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:05:52,302 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:05:52,302 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:05:52,302 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:05:52,303 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:05:52,303 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:05:52,304 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:05:52,304 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:05:52,305 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:05:52,305 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:05:52,305 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:05:52,305 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:05:52,306 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:05:52,306 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:05:52,306 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:05:52,307 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:05:52,307 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:05:52,307 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:05:52,307 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:05:52,308 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:05:52,308 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:05:52,308 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:05:52,308 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:05:52,308 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:05:52,309 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:05:52,309 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:05:52,309 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:05:52,309 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:05:52,310 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:05:52,310 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:05:52,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:05:52,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:05:52,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:05:52,517 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:05:52,517 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:05:52,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix009.opt.i [2024-06-27 22:05:53,656 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:05:53,936 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:05:53,937 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix009.opt.i [2024-06-27 22:05:53,952 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0019379f/d7edf4b78d4c43268a5c7d2017d3ee42/FLAGf166922ed [2024-06-27 22:05:53,971 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0019379f/d7edf4b78d4c43268a5c7d2017d3ee42 [2024-06-27 22:05:53,973 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:05:53,974 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:05:53,975 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix009.opt.yml/witness.yml [2024-06-27 22:05:54,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:05:54,067 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:05:54,069 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:05:54,070 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:05:54,074 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:05:54,075 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:05:53" (1/2) ... [2024-06-27 22:05:54,076 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e63fe61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:54, skipping insertion in model container [2024-06-27 22:05:54,076 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:05:53" (1/2) ... [2024-06-27 22:05:54,077 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e5d8dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:05:54, skipping insertion in model container [2024-06-27 22:05:54,078 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:05:54" (2/2) ... [2024-06-27 22:05:54,080 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e63fe61 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:05:54, skipping insertion in model container [2024-06-27 22:05:54,080 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:05:54" (2/2) ... [2024-06-27 22:05:54,080 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:05:54,107 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:05:54,108 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EBX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )z >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:05:54,109 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EBX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )z >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:05:54,109 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:05:54,109 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-27 22:05:54,154 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:05:54,347 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/mix009.opt.i[987,1000] [2024-06-27 22:05:54,547 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:05:54,558 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:05:54,610 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/mix009.opt.i[987,1000] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:05:54,750 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:05:54,789 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:05:54,790 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:05:54 WrapperNode [2024-06-27 22:05:54,790 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:05:54,791 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:05:54,791 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:05:54,792 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:05:54,799 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 10:05:54" (1/1) ... [2024-06-27 22:05:54,835 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 10:05:54" (1/1) ... [2024-06-27 22:05:54,877 INFO L138 Inliner]: procedures = 174, calls = 39, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 134 [2024-06-27 22:05:54,881 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:05:54,882 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:05:54,883 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:05:54,883 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:05:54,901 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 10:05:54" (1/1) ... [2024-06-27 22:05:54,901 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 10:05:54" (1/1) ... [2024-06-27 22:05:54,919 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 10:05:54" (1/1) ... [2024-06-27 22:05:54,937 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 22:05:54,937 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 10:05:54" (1/1) ... [2024-06-27 22:05:54,937 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 10:05:54" (1/1) ... [2024-06-27 22:05:54,944 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 10:05:54" (1/1) ... [2024-06-27 22:05:54,946 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 10:05:54" (1/1) ... [2024-06-27 22:05:54,948 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 10:05:54" (1/1) ... [2024-06-27 22:05:54,950 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 10:05:54" (1/1) ... [2024-06-27 22:05:54,954 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:05:54,955 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:05:54,955 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:05:54,955 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:05:54,956 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 10:05:54" (1/1) ... [2024-06-27 22:05:54,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:05:54,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:05:54,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 22:05:55,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 22:05:55,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:05:55,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:05:55,024 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:05:55,025 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:05:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:05:55,025 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:05:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:05:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:05:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:05:55,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:05:55,027 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 22:05:55,170 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:05:55,172 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:05:55,645 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:05:55,645 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:05:55,888 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:05:55,901 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:05:55,902 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:05:55 BoogieIcfgContainer [2024-06-27 22:05:55,902 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:05:55,905 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:05:55,905 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:05:55,908 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:05:55,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:05:53" (1/4) ... [2024-06-27 22:05:55,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19548bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:05:55, skipping insertion in model container [2024-06-27 22:05:55,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:05:54" (2/4) ... [2024-06-27 22:05:55,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19548bb7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:05:55, skipping insertion in model container [2024-06-27 22:05:55,910 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 10:05:54" (3/4) ... [2024-06-27 22:05:55,911 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19548bb7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:05:55, skipping insertion in model container [2024-06-27 22:05:55,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:05:55" (4/4) ... [2024-06-27 22:05:55,913 INFO L112 eAbstractionObserver]: Analyzing ICFG mix009.opt.i [2024-06-27 22:05:55,930 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:05:55,930 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 22:05:55,931 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:05:55,983 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:05:56,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 38 transitions, 84 flow [2024-06-27 22:05:56,052 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2024-06-27 22:05:56,052 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:05:56,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-06-27 22:05:56,055 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 38 transitions, 84 flow [2024-06-27 22:05:56,059 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 36 transitions, 78 flow [2024-06-27 22:05:56,075 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:05:56,081 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;@49769124, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:05:56,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 22:05:56,089 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:05:56,089 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:05:56,090 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:05:56,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:56,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:05:56,091 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:05:56,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:56,096 INFO L85 PathProgramCache]: Analyzing trace with hash 347538124, now seen corresponding path program 1 times [2024-06-27 22:05:56,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:56,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275477523] [2024-06-27 22:05:56,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:56,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:57,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:57,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:57,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275477523] [2024-06-27 22:05:57,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275477523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:57,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:57,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:05:57,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480562760] [2024-06-27 22:05:57,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:57,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:05:57,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:57,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:05:57,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:05:57,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-27 22:05:57,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:57,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:57,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-27 22:05:57,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:57,722 INFO L124 PetriNetUnfolderBase]: 460/827 cut-off events. [2024-06-27 22:05:57,723 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 22:05:57,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1615 conditions, 827 events. 460/827 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4363 event pairs, 210 based on Foata normal form. 42/819 useless extension candidates. Maximal degree in co-relation 1604. Up to 761 conditions per place. [2024-06-27 22:05:57,734 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 30 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2024-06-27 22:05:57,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 165 flow [2024-06-27 22:05:57,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:05:57,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:05:57,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-27 22:05:57,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2024-06-27 22:05:57,748 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 78 flow. Second operand 3 states and 80 transitions. [2024-06-27 22:05:57,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 165 flow [2024-06-27 22:05:57,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:05:57,755 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 97 flow [2024-06-27 22:05:57,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2024-06-27 22:05:57,761 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2024-06-27 22:05:57,761 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 97 flow [2024-06-27 22:05:57,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:57,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:57,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:57,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:05:57,763 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:05:57,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:57,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1023223257, now seen corresponding path program 1 times [2024-06-27 22:05:57,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:57,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027679746] [2024-06-27 22:05:57,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:57,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:58,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:05:58,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:58,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027679746] [2024-06-27 22:05:58,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027679746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:58,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:58,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:05:58,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106622173] [2024-06-27 22:05:58,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:58,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:05:58,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:58,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:05:58,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:05:58,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:05:58,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:58,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:58,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:05:58,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:05:58,932 INFO L124 PetriNetUnfolderBase]: 515/1029 cut-off events. [2024-06-27 22:05:58,933 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2024-06-27 22:05:58,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2088 conditions, 1029 events. 515/1029 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5875 event pairs, 355 based on Foata normal form. 2/956 useless extension candidates. Maximal degree in co-relation 2076. Up to 832 conditions per place. [2024-06-27 22:05:58,939 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 39 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-06-27 22:05:58,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 55 transitions, 227 flow [2024-06-27 22:05:58,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:05:58,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:05:58,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-06-27 22:05:58,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6513157894736842 [2024-06-27 22:05:58,941 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 97 flow. Second operand 4 states and 99 transitions. [2024-06-27 22:05:58,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 55 transitions, 227 flow [2024-06-27 22:05:58,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:05:58,943 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 123 flow [2024-06-27 22:05:58,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-06-27 22:05:58,944 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2024-06-27 22:05:58,945 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 123 flow [2024-06-27 22:05:58,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:58,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:05:58,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:05:58,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:05:58,946 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:05:58,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:05:58,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1655148865, now seen corresponding path program 1 times [2024-06-27 22:05:58,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:05:58,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102239092] [2024-06-27 22:05:58,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:05:58,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:05:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:05:59,862 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 22:05:59,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:05:59,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102239092] [2024-06-27 22:05:59,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102239092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:05:59,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:05:59,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:05:59,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972974484] [2024-06-27 22:05:59,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:05:59,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:05:59,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:05:59,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:05:59,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:05:59,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:05:59,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 123 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:05:59,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:05:59,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:05:59,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:00,189 INFO L124 PetriNetUnfolderBase]: 600/1038 cut-off events. [2024-06-27 22:06:00,190 INFO L125 PetriNetUnfolderBase]: For 383/383 co-relation queries the response was YES. [2024-06-27 22:06:00,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2437 conditions, 1038 events. 600/1038 cut-off events. For 383/383 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5275 event pairs, 252 based on Foata normal form. 2/1001 useless extension candidates. Maximal degree in co-relation 2423. Up to 951 conditions per place. [2024-06-27 22:06:00,197 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 48 selfloop transitions, 7 changer transitions 0/65 dead transitions. [2024-06-27 22:06:00,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 65 transitions, 295 flow [2024-06-27 22:06:00,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:06:00,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:06:00,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-06-27 22:06:00,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6210526315789474 [2024-06-27 22:06:00,199 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 123 flow. Second operand 5 states and 118 transitions. [2024-06-27 22:06:00,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 65 transitions, 295 flow [2024-06-27 22:06:00,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 65 transitions, 286 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 22:06:00,202 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 149 flow [2024-06-27 22:06:00,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=149, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2024-06-27 22:06:00,203 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2024-06-27 22:06:00,203 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 149 flow [2024-06-27 22:06:00,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:00,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:00,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:00,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:06:00,204 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:00,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:00,204 INFO L85 PathProgramCache]: Analyzing trace with hash 174582538, now seen corresponding path program 1 times [2024-06-27 22:06:00,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:00,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530416599] [2024-06-27 22:06:00,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:00,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:01,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:01,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:01,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530416599] [2024-06-27 22:06:01,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530416599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:01,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:01,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:06:01,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839799424] [2024-06-27 22:06:01,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:01,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:06:01,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:01,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:06:01,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:06:01,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:06:01,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:01,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:01,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:06:01,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:01,547 INFO L124 PetriNetUnfolderBase]: 584/1011 cut-off events. [2024-06-27 22:06:01,548 INFO L125 PetriNetUnfolderBase]: For 610/610 co-relation queries the response was YES. [2024-06-27 22:06:01,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2538 conditions, 1011 events. 584/1011 cut-off events. For 610/610 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5235 event pairs, 163 based on Foata normal form. 2/983 useless extension candidates. Maximal degree in co-relation 2523. Up to 909 conditions per place. [2024-06-27 22:06:01,554 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 56 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2024-06-27 22:06:01,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 75 transitions, 361 flow [2024-06-27 22:06:01,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:06:01,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:06:01,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-27 22:06:01,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6140350877192983 [2024-06-27 22:06:01,556 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 149 flow. Second operand 6 states and 140 transitions. [2024-06-27 22:06:01,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 75 transitions, 361 flow [2024-06-27 22:06:01,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 75 transitions, 346 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:01,560 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 175 flow [2024-06-27 22:06:01,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=175, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2024-06-27 22:06:01,561 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2024-06-27 22:06:01,561 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 175 flow [2024-06-27 22:06:01,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:01,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:01,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:01,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:06:01,562 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:01,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:01,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1117092474, now seen corresponding path program 1 times [2024-06-27 22:06:01,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:01,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199627033] [2024-06-27 22:06:01,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:01,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:03,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:03,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:03,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199627033] [2024-06-27 22:06:03,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199627033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:03,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:03,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:03,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260679620] [2024-06-27 22:06:03,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:03,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:03,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:03,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:03,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:03,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:06:03,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 175 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 22:06:03,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:03,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:06:03,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:03,494 INFO L124 PetriNetUnfolderBase]: 568/1074 cut-off events. [2024-06-27 22:06:03,494 INFO L125 PetriNetUnfolderBase]: For 864/864 co-relation queries the response was YES. [2024-06-27 22:06:03,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2695 conditions, 1074 events. 568/1074 cut-off events. For 864/864 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5877 event pairs, 250 based on Foata normal form. 2/1027 useless extension candidates. Maximal degree in co-relation 2679. Up to 867 conditions per place. [2024-06-27 22:06:03,501 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 64 selfloop transitions, 11 changer transitions 0/85 dead transitions. [2024-06-27 22:06:03,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 85 transitions, 427 flow [2024-06-27 22:06:03,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:03,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:03,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-27 22:06:03,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6090225563909775 [2024-06-27 22:06:03,503 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 175 flow. Second operand 7 states and 162 transitions. [2024-06-27 22:06:03,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 85 transitions, 427 flow [2024-06-27 22:06:03,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 85 transitions, 406 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 22:06:03,507 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 201 flow [2024-06-27 22:06:03,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=201, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2024-06-27 22:06:03,508 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2024-06-27 22:06:03,508 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 201 flow [2024-06-27 22:06:03,508 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 22:06:03,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:03,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:03,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:06:03,509 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:03,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:03,510 INFO L85 PathProgramCache]: Analyzing trace with hash 559433975, now seen corresponding path program 1 times [2024-06-27 22:06:03,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:03,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713946864] [2024-06-27 22:06:03,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:03,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:04,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:04,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:04,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713946864] [2024-06-27 22:06:04,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713946864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:04,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:04,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:06:04,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804615668] [2024-06-27 22:06:04,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:04,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:06:04,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:04,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:06:04,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:06:04,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:06:04,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 201 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:04,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:04,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:06:04,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:04,863 INFO L124 PetriNetUnfolderBase]: 600/1210 cut-off events. [2024-06-27 22:06:04,863 INFO L125 PetriNetUnfolderBase]: For 1438/1453 co-relation queries the response was YES. [2024-06-27 22:06:04,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3041 conditions, 1210 events. 600/1210 cut-off events. For 1438/1453 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 7061 event pairs, 368 based on Foata normal form. 16/1157 useless extension candidates. Maximal degree in co-relation 3023. Up to 998 conditions per place. [2024-06-27 22:06:04,872 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 41 selfloop transitions, 10 changer transitions 0/61 dead transitions. [2024-06-27 22:06:04,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 355 flow [2024-06-27 22:06:04,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:06:04,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:06:04,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2024-06-27 22:06:04,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157894736842106 [2024-06-27 22:06:04,874 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 201 flow. Second operand 5 states and 98 transitions. [2024-06-27 22:06:04,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 355 flow [2024-06-27 22:06:04,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 61 transitions, 322 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 22:06:04,880 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 249 flow [2024-06-27 22:06:04,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=249, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2024-06-27 22:06:04,883 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2024-06-27 22:06:04,883 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 249 flow [2024-06-27 22:06:04,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:04,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:04,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:04,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:06:04,884 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:04,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:04,885 INFO L85 PathProgramCache]: Analyzing trace with hash 162585200, now seen corresponding path program 1 times [2024-06-27 22:06:04,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:04,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65990720] [2024-06-27 22:06:04,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:04,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:06,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:06,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:06,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65990720] [2024-06-27 22:06:06,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65990720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:06,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:06,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:06:06,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694895590] [2024-06-27 22:06:06,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:06,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:06:06,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:06,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:06:06,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:06:06,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:06:06,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 249 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:06,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:06,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:06:06,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:07,212 INFO L124 PetriNetUnfolderBase]: 602/1214 cut-off events. [2024-06-27 22:06:07,212 INFO L125 PetriNetUnfolderBase]: For 1633/1648 co-relation queries the response was YES. [2024-06-27 22:06:07,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3199 conditions, 1214 events. 602/1214 cut-off events. For 1633/1648 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7086 event pairs, 366 based on Foata normal form. 16/1159 useless extension candidates. Maximal degree in co-relation 3176. Up to 993 conditions per place. [2024-06-27 22:06:07,223 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 47 selfloop transitions, 12 changer transitions 0/69 dead transitions. [2024-06-27 22:06:07,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 407 flow [2024-06-27 22:06:07,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:06:07,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:06:07,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-06-27 22:06:07,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131578947368421 [2024-06-27 22:06:07,225 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 249 flow. Second operand 6 states and 117 transitions. [2024-06-27 22:06:07,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 407 flow [2024-06-27 22:06:07,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 69 transitions, 405 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-27 22:06:07,230 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 288 flow [2024-06-27 22:06:07,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2024-06-27 22:06:07,232 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2024-06-27 22:06:07,232 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 288 flow [2024-06-27 22:06:07,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:07,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:07,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:07,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:06:07,233 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:07,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:07,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1273484477, now seen corresponding path program 1 times [2024-06-27 22:06:07,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:07,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710487867] [2024-06-27 22:06:07,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:07,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:08,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:08,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:08,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710487867] [2024-06-27 22:06:08,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710487867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:08,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:08,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:08,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464549185] [2024-06-27 22:06:08,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:08,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:08,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:08,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:08,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:08,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:06:08,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 288 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 22:06:08,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:08,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:06:08,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:09,292 INFO L124 PetriNetUnfolderBase]: 546/1102 cut-off events. [2024-06-27 22:06:09,293 INFO L125 PetriNetUnfolderBase]: For 1784/1788 co-relation queries the response was YES. [2024-06-27 22:06:09,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3002 conditions, 1102 events. 546/1102 cut-off events. For 1784/1788 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 6170 event pairs, 172 based on Foata normal form. 8/1062 useless extension candidates. Maximal degree in co-relation 2976. Up to 794 conditions per place. [2024-06-27 22:06:09,300 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 65 selfloop transitions, 15 changer transitions 7/97 dead transitions. [2024-06-27 22:06:09,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 97 transitions, 554 flow [2024-06-27 22:06:09,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:09,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:09,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-06-27 22:06:09,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5855263157894737 [2024-06-27 22:06:09,303 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 288 flow. Second operand 8 states and 178 transitions. [2024-06-27 22:06:09,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 97 transitions, 554 flow [2024-06-27 22:06:09,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 97 transitions, 529 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 22:06:09,312 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 271 flow [2024-06-27 22:06:09,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=271, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2024-06-27 22:06:09,315 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2024-06-27 22:06:09,316 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 271 flow [2024-06-27 22:06:09,316 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 22:06:09,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:09,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:09,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:06:09,317 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:09,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:09,317 INFO L85 PathProgramCache]: Analyzing trace with hash 655592358, now seen corresponding path program 1 times [2024-06-27 22:06:09,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:09,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553258872] [2024-06-27 22:06:09,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:09,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:10,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:10,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:10,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553258872] [2024-06-27 22:06:10,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553258872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:10,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:10,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:06:10,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760701268] [2024-06-27 22:06:10,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:10,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:06:10,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:10,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:06:10,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:06:10,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:06:10,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 271 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:10,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:10,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:06:10,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:10,682 INFO L124 PetriNetUnfolderBase]: 516/1086 cut-off events. [2024-06-27 22:06:10,683 INFO L125 PetriNetUnfolderBase]: For 2302/2310 co-relation queries the response was YES. [2024-06-27 22:06:10,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3023 conditions, 1086 events. 516/1086 cut-off events. For 2302/2310 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6221 event pairs, 266 based on Foata normal form. 9/1044 useless extension candidates. Maximal degree in co-relation 2996. Up to 838 conditions per place. [2024-06-27 22:06:10,691 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 52 selfloop transitions, 17 changer transitions 0/79 dead transitions. [2024-06-27 22:06:10,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 79 transitions, 501 flow [2024-06-27 22:06:10,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:10,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:10,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-27 22:06:10,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49624060150375937 [2024-06-27 22:06:10,694 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 271 flow. Second operand 7 states and 132 transitions. [2024-06-27 22:06:10,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 79 transitions, 501 flow [2024-06-27 22:06:10,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 79 transitions, 455 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 22:06:10,699 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 340 flow [2024-06-27 22:06:10,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=340, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-06-27 22:06:10,700 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2024-06-27 22:06:10,700 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 340 flow [2024-06-27 22:06:10,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:10,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:10,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:10,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:06:10,703 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:10,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:10,703 INFO L85 PathProgramCache]: Analyzing trace with hash -287592448, now seen corresponding path program 2 times [2024-06-27 22:06:10,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:10,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871059964] [2024-06-27 22:06:10,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:10,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:11,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:11,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:11,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871059964] [2024-06-27 22:06:11,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871059964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:11,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:11,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:06:11,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691639030] [2024-06-27 22:06:11,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:11,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:06:11,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:11,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:06:11,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:06:11,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:06:11,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 340 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:11,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:11,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:06:11,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:12,191 INFO L124 PetriNetUnfolderBase]: 532/1111 cut-off events. [2024-06-27 22:06:12,191 INFO L125 PetriNetUnfolderBase]: For 2599/2607 co-relation queries the response was YES. [2024-06-27 22:06:12,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3277 conditions, 1111 events. 532/1111 cut-off events. For 2599/2607 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6356 event pairs, 263 based on Foata normal form. 9/1068 useless extension candidates. Maximal degree in co-relation 3247. Up to 858 conditions per place. [2024-06-27 22:06:12,200 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 51 selfloop transitions, 23 changer transitions 0/84 dead transitions. [2024-06-27 22:06:12,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 84 transitions, 587 flow [2024-06-27 22:06:12,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:06:12,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:06:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-27 22:06:12,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5043859649122807 [2024-06-27 22:06:12,202 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 340 flow. Second operand 6 states and 115 transitions. [2024-06-27 22:06:12,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 84 transitions, 587 flow [2024-06-27 22:06:12,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 84 transitions, 565 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-06-27 22:06:12,209 INFO L231 Difference]: Finished difference. Result has 71 places, 73 transitions, 455 flow [2024-06-27 22:06:12,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=455, PETRI_PLACES=71, PETRI_TRANSITIONS=73} [2024-06-27 22:06:12,211 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2024-06-27 22:06:12,211 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 73 transitions, 455 flow [2024-06-27 22:06:12,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:12,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:12,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:12,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:06:12,213 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:12,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:12,214 INFO L85 PathProgramCache]: Analyzing trace with hash -279944128, now seen corresponding path program 3 times [2024-06-27 22:06:12,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:12,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761047162] [2024-06-27 22:06:12,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:12,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:13,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:13,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:13,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761047162] [2024-06-27 22:06:13,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761047162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:13,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:13,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:06:13,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751349722] [2024-06-27 22:06:13,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:13,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:06:13,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:13,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:06:13,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:06:13,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:06:13,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 73 transitions, 455 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:13,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:13,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:06:13,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:13,765 INFO L124 PetriNetUnfolderBase]: 530/1108 cut-off events. [2024-06-27 22:06:13,766 INFO L125 PetriNetUnfolderBase]: For 3293/3301 co-relation queries the response was YES. [2024-06-27 22:06:13,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3487 conditions, 1108 events. 530/1108 cut-off events. For 3293/3301 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6348 event pairs, 266 based on Foata normal form. 9/1065 useless extension candidates. Maximal degree in co-relation 3454. Up to 834 conditions per place. [2024-06-27 22:06:13,777 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 46 selfloop transitions, 31 changer transitions 0/87 dead transitions. [2024-06-27 22:06:13,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 87 transitions, 663 flow [2024-06-27 22:06:13,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:06:13,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:06:13,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-27 22:06:13,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5043859649122807 [2024-06-27 22:06:13,780 INFO L175 Difference]: Start difference. First operand has 71 places, 73 transitions, 455 flow. Second operand 6 states and 115 transitions. [2024-06-27 22:06:13,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 87 transitions, 663 flow [2024-06-27 22:06:13,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 87 transitions, 640 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 22:06:13,788 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 530 flow [2024-06-27 22:06:13,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=530, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2024-06-27 22:06:13,789 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2024-06-27 22:06:13,789 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 530 flow [2024-06-27 22:06:13,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:13,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:13,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:13,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:06:13,790 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:13,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:13,791 INFO L85 PathProgramCache]: Analyzing trace with hash -279933216, now seen corresponding path program 1 times [2024-06-27 22:06:13,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:13,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235503134] [2024-06-27 22:06:13,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:13,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:15,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:15,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:15,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235503134] [2024-06-27 22:06:15,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235503134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:15,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:15,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:15,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190792139] [2024-06-27 22:06:15,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:15,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:15,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:15,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:15,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:15,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:06:15,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 530 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:15,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:15,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:06:15,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:16,226 INFO L124 PetriNetUnfolderBase]: 573/1162 cut-off events. [2024-06-27 22:06:16,227 INFO L125 PetriNetUnfolderBase]: For 4092/4092 co-relation queries the response was YES. [2024-06-27 22:06:16,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3840 conditions, 1162 events. 573/1162 cut-off events. For 4092/4092 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6476 event pairs, 283 based on Foata normal form. 1/1111 useless extension candidates. Maximal degree in co-relation 3804. Up to 918 conditions per place. [2024-06-27 22:06:16,236 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 72 selfloop transitions, 16 changer transitions 0/96 dead transitions. [2024-06-27 22:06:16,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 96 transitions, 782 flow [2024-06-27 22:06:16,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:16,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:16,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-27 22:06:16,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.462406015037594 [2024-06-27 22:06:16,239 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 530 flow. Second operand 7 states and 123 transitions. [2024-06-27 22:06:16,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 96 transitions, 782 flow [2024-06-27 22:06:16,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 96 transitions, 706 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 22:06:16,249 INFO L231 Difference]: Finished difference. Result has 80 places, 82 transitions, 544 flow [2024-06-27 22:06:16,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=544, PETRI_PLACES=80, PETRI_TRANSITIONS=82} [2024-06-27 22:06:16,250 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 38 predicate places. [2024-06-27 22:06:16,250 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 82 transitions, 544 flow [2024-06-27 22:06:16,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:16,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:16,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:16,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:06:16,251 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:16,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:16,252 INFO L85 PathProgramCache]: Analyzing trace with hash 176941714, now seen corresponding path program 1 times [2024-06-27 22:06:16,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:16,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730839761] [2024-06-27 22:06:16,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:16,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:17,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:17,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:17,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730839761] [2024-06-27 22:06:17,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730839761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:17,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:17,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:17,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730686282] [2024-06-27 22:06:17,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:17,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:17,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:17,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:17,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:17,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:06:17,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 82 transitions, 544 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:17,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:17,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:06:17,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:17,726 INFO L124 PetriNetUnfolderBase]: 590/1189 cut-off events. [2024-06-27 22:06:17,727 INFO L125 PetriNetUnfolderBase]: For 4749/4749 co-relation queries the response was YES. [2024-06-27 22:06:17,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4059 conditions, 1189 events. 590/1189 cut-off events. For 4749/4749 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6623 event pairs, 246 based on Foata normal form. 1/1138 useless extension candidates. Maximal degree in co-relation 4021. Up to 916 conditions per place. [2024-06-27 22:06:17,740 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 79 selfloop transitions, 27 changer transitions 0/114 dead transitions. [2024-06-27 22:06:17,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 114 transitions, 894 flow [2024-06-27 22:06:17,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:17,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:17,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 22:06:17,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4769736842105263 [2024-06-27 22:06:17,742 INFO L175 Difference]: Start difference. First operand has 80 places, 82 transitions, 544 flow. Second operand 8 states and 145 transitions. [2024-06-27 22:06:17,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 114 transitions, 894 flow [2024-06-27 22:06:17,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 114 transitions, 859 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:17,752 INFO L231 Difference]: Finished difference. Result has 86 places, 93 transitions, 672 flow [2024-06-27 22:06:17,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=672, PETRI_PLACES=86, PETRI_TRANSITIONS=93} [2024-06-27 22:06:17,753 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 44 predicate places. [2024-06-27 22:06:17,753 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 93 transitions, 672 flow [2024-06-27 22:06:17,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:17,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:17,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:17,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:06:17,754 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:17,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:17,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1151652922, now seen corresponding path program 2 times [2024-06-27 22:06:17,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:17,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494156438] [2024-06-27 22:06:17,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:17,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:18,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:18,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:18,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494156438] [2024-06-27 22:06:18,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494156438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:18,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:18,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:18,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238841455] [2024-06-27 22:06:18,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:18,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:18,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:18,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:18,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:18,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:06:18,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 93 transitions, 672 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:18,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:18,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:06:18,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:19,313 INFO L124 PetriNetUnfolderBase]: 615/1227 cut-off events. [2024-06-27 22:06:19,314 INFO L125 PetriNetUnfolderBase]: For 5947/5947 co-relation queries the response was YES. [2024-06-27 22:06:19,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4550 conditions, 1227 events. 615/1227 cut-off events. For 5947/5947 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6852 event pairs, 245 based on Foata normal form. 1/1176 useless extension candidates. Maximal degree in co-relation 4509. Up to 946 conditions per place. [2024-06-27 22:06:19,329 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 81 selfloop transitions, 36 changer transitions 0/125 dead transitions. [2024-06-27 22:06:19,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 125 transitions, 1098 flow [2024-06-27 22:06:19,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:19,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:19,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 22:06:19,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4769736842105263 [2024-06-27 22:06:19,331 INFO L175 Difference]: Start difference. First operand has 86 places, 93 transitions, 672 flow. Second operand 8 states and 145 transitions. [2024-06-27 22:06:19,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 125 transitions, 1098 flow [2024-06-27 22:06:19,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 125 transitions, 991 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:19,344 INFO L231 Difference]: Finished difference. Result has 92 places, 106 transitions, 806 flow [2024-06-27 22:06:19,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=806, PETRI_PLACES=92, PETRI_TRANSITIONS=106} [2024-06-27 22:06:19,345 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 50 predicate places. [2024-06-27 22:06:19,345 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 106 transitions, 806 flow [2024-06-27 22:06:19,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:19,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:19,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:19,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:06:19,346 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:19,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:19,347 INFO L85 PathProgramCache]: Analyzing trace with hash -78387122, now seen corresponding path program 3 times [2024-06-27 22:06:19,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:19,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698435396] [2024-06-27 22:06:19,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:19,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:20,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:20,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:20,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698435396] [2024-06-27 22:06:20,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698435396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:20,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:20,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:20,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866270024] [2024-06-27 22:06:20,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:20,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:20,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:20,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:20,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:20,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:06:20,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 106 transitions, 806 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:20,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:20,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:06:20,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:20,987 INFO L124 PetriNetUnfolderBase]: 623/1239 cut-off events. [2024-06-27 22:06:20,988 INFO L125 PetriNetUnfolderBase]: For 7037/7037 co-relation queries the response was YES. [2024-06-27 22:06:20,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4844 conditions, 1239 events. 623/1239 cut-off events. For 7037/7037 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6882 event pairs, 245 based on Foata normal form. 1/1187 useless extension candidates. Maximal degree in co-relation 4800. Up to 932 conditions per place. [2024-06-27 22:06:20,999 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 74 selfloop transitions, 46 changer transitions 0/128 dead transitions. [2024-06-27 22:06:20,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 128 transitions, 1144 flow [2024-06-27 22:06:21,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:21,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:21,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 22:06:21,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4769736842105263 [2024-06-27 22:06:21,001 INFO L175 Difference]: Start difference. First operand has 92 places, 106 transitions, 806 flow. Second operand 8 states and 145 transitions. [2024-06-27 22:06:21,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 128 transitions, 1144 flow [2024-06-27 22:06:21,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 128 transitions, 1092 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:21,016 INFO L231 Difference]: Finished difference. Result has 97 places, 109 transitions, 897 flow [2024-06-27 22:06:21,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=897, PETRI_PLACES=97, PETRI_TRANSITIONS=109} [2024-06-27 22:06:21,018 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 55 predicate places. [2024-06-27 22:06:21,018 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 109 transitions, 897 flow [2024-06-27 22:06:21,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:21,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:21,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:21,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:06:21,019 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:21,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:21,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1118404213, now seen corresponding path program 1 times [2024-06-27 22:06:21,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:21,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504977434] [2024-06-27 22:06:21,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:21,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:22,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:22,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:22,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504977434] [2024-06-27 22:06:22,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504977434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:22,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:22,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:22,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56832301] [2024-06-27 22:06:22,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:22,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:22,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:22,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:22,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:22,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:06:22,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 109 transitions, 897 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 22:06:22,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:22,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:06:22,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:23,028 INFO L124 PetriNetUnfolderBase]: 598/1221 cut-off events. [2024-06-27 22:06:23,028 INFO L125 PetriNetUnfolderBase]: For 7956/7956 co-relation queries the response was YES. [2024-06-27 22:06:23,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4860 conditions, 1221 events. 598/1221 cut-off events. For 7956/7956 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6922 event pairs, 255 based on Foata normal form. 1/1169 useless extension candidates. Maximal degree in co-relation 4815. Up to 915 conditions per place. [2024-06-27 22:06:23,036 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 88 selfloop transitions, 26 changer transitions 0/132 dead transitions. [2024-06-27 22:06:23,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 132 transitions, 1219 flow [2024-06-27 22:06:23,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:23,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:23,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 22:06:23,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934210526315789 [2024-06-27 22:06:23,038 INFO L175 Difference]: Start difference. First operand has 97 places, 109 transitions, 897 flow. Second operand 8 states and 150 transitions. [2024-06-27 22:06:23,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 132 transitions, 1219 flow [2024-06-27 22:06:23,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 132 transitions, 1100 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 22:06:23,051 INFO L231 Difference]: Finished difference. Result has 99 places, 111 transitions, 854 flow [2024-06-27 22:06:23,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=854, PETRI_PLACES=99, PETRI_TRANSITIONS=111} [2024-06-27 22:06:23,051 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 57 predicate places. [2024-06-27 22:06:23,052 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 111 transitions, 854 flow [2024-06-27 22:06:23,052 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 22:06:23,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:23,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:23,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:06:23,053 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:23,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:23,053 INFO L85 PathProgramCache]: Analyzing trace with hash -325437856, now seen corresponding path program 4 times [2024-06-27 22:06:23,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:23,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197778920] [2024-06-27 22:06:23,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:23,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:24,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:24,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:24,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197778920] [2024-06-27 22:06:24,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197778920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:24,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:24,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:24,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491954221] [2024-06-27 22:06:24,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:24,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:24,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:24,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:24,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:24,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:06:24,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 111 transitions, 854 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:24,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:24,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:06:24,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:24,663 INFO L124 PetriNetUnfolderBase]: 658/1288 cut-off events. [2024-06-27 22:06:24,663 INFO L125 PetriNetUnfolderBase]: For 8821/8821 co-relation queries the response was YES. [2024-06-27 22:06:24,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5339 conditions, 1288 events. 658/1288 cut-off events. For 8821/8821 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 7122 event pairs, 155 based on Foata normal form. 1/1233 useless extension candidates. Maximal degree in co-relation 5293. Up to 1006 conditions per place. [2024-06-27 22:06:24,673 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 89 selfloop transitions, 44 changer transitions 0/141 dead transitions. [2024-06-27 22:06:24,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 141 transitions, 1304 flow [2024-06-27 22:06:24,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:24,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:24,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 22:06:24,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45723684210526316 [2024-06-27 22:06:24,675 INFO L175 Difference]: Start difference. First operand has 99 places, 111 transitions, 854 flow. Second operand 8 states and 139 transitions. [2024-06-27 22:06:24,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 141 transitions, 1304 flow [2024-06-27 22:06:24,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 141 transitions, 1250 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 22:06:24,687 INFO L231 Difference]: Finished difference. Result has 101 places, 127 transitions, 1062 flow [2024-06-27 22:06:24,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1062, PETRI_PLACES=101, PETRI_TRANSITIONS=127} [2024-06-27 22:06:24,688 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 59 predicate places. [2024-06-27 22:06:24,688 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 127 transitions, 1062 flow [2024-06-27 22:06:24,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:24,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:24,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:24,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:06:24,689 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:24,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:24,689 INFO L85 PathProgramCache]: Analyzing trace with hash -325430137, now seen corresponding path program 2 times [2024-06-27 22:06:24,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:24,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071893814] [2024-06-27 22:06:24,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:24,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:26,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:26,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:26,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071893814] [2024-06-27 22:06:26,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071893814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:26,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:26,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:26,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431116564] [2024-06-27 22:06:26,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:26,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:26,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:26,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:26,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:26,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:06:26,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 127 transitions, 1062 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 22:06:26,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:26,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:06:26,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:26,703 INFO L124 PetriNetUnfolderBase]: 636/1278 cut-off events. [2024-06-27 22:06:26,704 INFO L125 PetriNetUnfolderBase]: For 9919/9919 co-relation queries the response was YES. [2024-06-27 22:06:26,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5379 conditions, 1278 events. 636/1278 cut-off events. For 9919/9919 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 7232 event pairs, 255 based on Foata normal form. 1/1225 useless extension candidates. Maximal degree in co-relation 5332. Up to 958 conditions per place. [2024-06-27 22:06:26,715 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 94 selfloop transitions, 28 changer transitions 0/146 dead transitions. [2024-06-27 22:06:26,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 146 transitions, 1400 flow [2024-06-27 22:06:26,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:26,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:26,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-27 22:06:26,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47039473684210525 [2024-06-27 22:06:26,717 INFO L175 Difference]: Start difference. First operand has 101 places, 127 transitions, 1062 flow. Second operand 8 states and 143 transitions. [2024-06-27 22:06:26,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 146 transitions, 1400 flow [2024-06-27 22:06:26,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 146 transitions, 1331 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:26,735 INFO L231 Difference]: Finished difference. Result has 106 places, 132 transitions, 1118 flow [2024-06-27 22:06:26,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1118, PETRI_PLACES=106, PETRI_TRANSITIONS=132} [2024-06-27 22:06:26,736 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 64 predicate places. [2024-06-27 22:06:26,736 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 132 transitions, 1118 flow [2024-06-27 22:06:26,736 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 22:06:26,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:26,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:26,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:06:26,737 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:26,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:26,737 INFO L85 PathProgramCache]: Analyzing trace with hash -325430416, now seen corresponding path program 5 times [2024-06-27 22:06:26,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:26,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538968461] [2024-06-27 22:06:26,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:26,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:27,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:27,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:27,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538968461] [2024-06-27 22:06:27,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538968461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:27,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:27,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:27,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242671875] [2024-06-27 22:06:27,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:27,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:27,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:27,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:27,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:27,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:06:27,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 132 transitions, 1118 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:27,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:27,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:06:27,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:28,303 INFO L124 PetriNetUnfolderBase]: 682/1324 cut-off events. [2024-06-27 22:06:28,303 INFO L125 PetriNetUnfolderBase]: For 11611/11611 co-relation queries the response was YES. [2024-06-27 22:06:28,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5898 conditions, 1324 events. 682/1324 cut-off events. For 11611/11611 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 7280 event pairs, 156 based on Foata normal form. 1/1269 useless extension candidates. Maximal degree in co-relation 5849. Up to 1022 conditions per place. [2024-06-27 22:06:28,313 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 90 selfloop transitions, 54 changer transitions 0/152 dead transitions. [2024-06-27 22:06:28,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 152 transitions, 1514 flow [2024-06-27 22:06:28,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:28,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:28,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 22:06:28,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-06-27 22:06:28,315 INFO L175 Difference]: Start difference. First operand has 106 places, 132 transitions, 1118 flow. Second operand 8 states and 140 transitions. [2024-06-27 22:06:28,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 152 transitions, 1514 flow [2024-06-27 22:06:28,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 152 transitions, 1431 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 22:06:28,334 INFO L231 Difference]: Finished difference. Result has 108 places, 138 transitions, 1229 flow [2024-06-27 22:06:28,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1229, PETRI_PLACES=108, PETRI_TRANSITIONS=138} [2024-06-27 22:06:28,334 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 66 predicate places. [2024-06-27 22:06:28,335 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 138 transitions, 1229 flow [2024-06-27 22:06:28,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:28,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:28,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:28,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:06:28,335 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:28,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:28,336 INFO L85 PathProgramCache]: Analyzing trace with hash -88332217, now seen corresponding path program 3 times [2024-06-27 22:06:28,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:28,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333617118] [2024-06-27 22:06:28,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:28,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:29,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:29,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:29,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333617118] [2024-06-27 22:06:29,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333617118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:29,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:29,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:29,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624690300] [2024-06-27 22:06:29,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:29,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:29,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:29,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:29,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:29,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:06:29,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 138 transitions, 1229 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 22:06:29,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:29,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:06:29,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:30,321 INFO L124 PetriNetUnfolderBase]: 656/1309 cut-off events. [2024-06-27 22:06:30,322 INFO L125 PetriNetUnfolderBase]: For 12830/12830 co-relation queries the response was YES. [2024-06-27 22:06:30,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5873 conditions, 1309 events. 656/1309 cut-off events. For 12830/12830 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 7384 event pairs, 258 based on Foata normal form. 1/1255 useless extension candidates. Maximal degree in co-relation 5824. Up to 964 conditions per place. [2024-06-27 22:06:30,333 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 95 selfloop transitions, 34 changer transitions 0/155 dead transitions. [2024-06-27 22:06:30,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 155 transitions, 1579 flow [2024-06-27 22:06:30,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:30,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:30,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-27 22:06:30,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49624060150375937 [2024-06-27 22:06:30,338 INFO L175 Difference]: Start difference. First operand has 108 places, 138 transitions, 1229 flow. Second operand 7 states and 132 transitions. [2024-06-27 22:06:30,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 155 transitions, 1579 flow [2024-06-27 22:06:30,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 155 transitions, 1439 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 22:06:30,357 INFO L231 Difference]: Finished difference. Result has 109 places, 141 transitions, 1215 flow [2024-06-27 22:06:30,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1215, PETRI_PLACES=109, PETRI_TRANSITIONS=141} [2024-06-27 22:06:30,357 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 67 predicate places. [2024-06-27 22:06:30,358 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 141 transitions, 1215 flow [2024-06-27 22:06:30,358 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 22:06:30,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:30,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:30,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:06:30,358 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:30,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:30,359 INFO L85 PathProgramCache]: Analyzing trace with hash -875497470, now seen corresponding path program 6 times [2024-06-27 22:06:30,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:30,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58640486] [2024-06-27 22:06:30,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:30,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:31,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:31,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:31,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58640486] [2024-06-27 22:06:31,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58640486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:31,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:31,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:31,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830704118] [2024-06-27 22:06:31,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:31,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:31,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:31,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:31,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:31,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:06:31,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 141 transitions, 1215 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:31,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:31,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:06:31,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:31,913 INFO L124 PetriNetUnfolderBase]: 688/1333 cut-off events. [2024-06-27 22:06:31,913 INFO L125 PetriNetUnfolderBase]: For 14152/14152 co-relation queries the response was YES. [2024-06-27 22:06:31,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6221 conditions, 1333 events. 688/1333 cut-off events. For 14152/14152 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 7349 event pairs, 162 based on Foata normal form. 1/1280 useless extension candidates. Maximal degree in co-relation 6171. Up to 979 conditions per place. [2024-06-27 22:06:31,924 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 76 selfloop transitions, 74 changer transitions 0/158 dead transitions. [2024-06-27 22:06:31,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 158 transitions, 1621 flow [2024-06-27 22:06:31,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:31,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:31,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 22:06:31,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45723684210526316 [2024-06-27 22:06:31,926 INFO L175 Difference]: Start difference. First operand has 109 places, 141 transitions, 1215 flow. Second operand 8 states and 139 transitions. [2024-06-27 22:06:31,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 158 transitions, 1621 flow [2024-06-27 22:06:31,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 158 transitions, 1517 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 22:06:31,947 INFO L231 Difference]: Finished difference. Result has 112 places, 144 transitions, 1331 flow [2024-06-27 22:06:31,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1111, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1331, PETRI_PLACES=112, PETRI_TRANSITIONS=144} [2024-06-27 22:06:31,948 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 70 predicate places. [2024-06-27 22:06:31,948 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 144 transitions, 1331 flow [2024-06-27 22:06:31,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:31,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:31,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:31,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:06:31,949 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:31,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:31,949 INFO L85 PathProgramCache]: Analyzing trace with hash -88005787, now seen corresponding path program 4 times [2024-06-27 22:06:31,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:31,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581514236] [2024-06-27 22:06:31,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:31,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:33,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:33,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:33,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581514236] [2024-06-27 22:06:33,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581514236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:33,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:33,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:33,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067706713] [2024-06-27 22:06:33,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:33,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:33,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:33,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:33,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:33,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:06:33,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 144 transitions, 1331 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 22:06:33,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:33,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:06:33,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:33,971 INFO L124 PetriNetUnfolderBase]: 652/1302 cut-off events. [2024-06-27 22:06:33,971 INFO L125 PetriNetUnfolderBase]: For 14875/14875 co-relation queries the response was YES. [2024-06-27 22:06:33,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6063 conditions, 1302 events. 652/1302 cut-off events. For 14875/14875 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 7364 event pairs, 256 based on Foata normal form. 1/1251 useless extension candidates. Maximal degree in co-relation 6012. Up to 928 conditions per place. [2024-06-27 22:06:33,982 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 90 selfloop transitions, 47 changer transitions 0/164 dead transitions. [2024-06-27 22:06:33,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 164 transitions, 1749 flow [2024-06-27 22:06:33,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:33,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:33,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-27 22:06:33,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:06:33,984 INFO L175 Difference]: Start difference. First operand has 112 places, 144 transitions, 1331 flow. Second operand 7 states and 133 transitions. [2024-06-27 22:06:33,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 164 transitions, 1749 flow [2024-06-27 22:06:34,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 164 transitions, 1551 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 22:06:34,008 INFO L231 Difference]: Finished difference. Result has 114 places, 150 transitions, 1360 flow [2024-06-27 22:06:34,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1360, PETRI_PLACES=114, PETRI_TRANSITIONS=150} [2024-06-27 22:06:34,008 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 72 predicate places. [2024-06-27 22:06:34,009 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 150 transitions, 1360 flow [2024-06-27 22:06:34,009 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 22:06:34,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:34,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:34,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:06:34,009 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:34,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:34,010 INFO L85 PathProgramCache]: Analyzing trace with hash -87993883, now seen corresponding path program 1 times [2024-06-27 22:06:34,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:34,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456349128] [2024-06-27 22:06:34,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:34,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:36,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:36,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:36,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456349128] [2024-06-27 22:06:36,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456349128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:36,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:36,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:06:36,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783612146] [2024-06-27 22:06:36,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:36,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:06:36,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:36,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:06:36,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:06:36,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:06:36,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 150 transitions, 1360 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:36,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:36,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:06:36,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:36,735 INFO L124 PetriNetUnfolderBase]: 649/1302 cut-off events. [2024-06-27 22:06:36,736 INFO L125 PetriNetUnfolderBase]: For 15862/15862 co-relation queries the response was YES. [2024-06-27 22:06:36,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6122 conditions, 1302 events. 649/1302 cut-off events. For 15862/15862 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 7434 event pairs, 282 based on Foata normal form. 1/1251 useless extension candidates. Maximal degree in co-relation 6069. Up to 987 conditions per place. [2024-06-27 22:06:36,744 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 126 selfloop transitions, 18 changer transitions 0/171 dead transitions. [2024-06-27 22:06:36,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 171 transitions, 1748 flow [2024-06-27 22:06:36,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:36,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:36,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 22:06:36,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619883040935672 [2024-06-27 22:06:36,746 INFO L175 Difference]: Start difference. First operand has 114 places, 150 transitions, 1360 flow. Second operand 9 states and 158 transitions. [2024-06-27 22:06:36,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 171 transitions, 1748 flow [2024-06-27 22:06:36,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 171 transitions, 1639 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:36,772 INFO L231 Difference]: Finished difference. Result has 120 places, 152 transitions, 1308 flow [2024-06-27 22:06:36,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1251, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1308, PETRI_PLACES=120, PETRI_TRANSITIONS=152} [2024-06-27 22:06:36,773 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 78 predicate places. [2024-06-27 22:06:36,773 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 152 transitions, 1308 flow [2024-06-27 22:06:36,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:36,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:36,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:36,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:06:36,774 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:36,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:36,774 INFO L85 PathProgramCache]: Analyzing trace with hash -923015061, now seen corresponding path program 1 times [2024-06-27 22:06:36,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:36,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046979728] [2024-06-27 22:06:36,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:36,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:37,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:37,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:37,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046979728] [2024-06-27 22:06:37,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046979728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:37,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:37,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:37,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809998603] [2024-06-27 22:06:37,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:37,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:37,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:37,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:37,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:37,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:06:37,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 152 transitions, 1308 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 22:06:37,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:37,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:06:37,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:38,211 INFO L124 PetriNetUnfolderBase]: 704/1365 cut-off events. [2024-06-27 22:06:38,211 INFO L125 PetriNetUnfolderBase]: For 17563/17563 co-relation queries the response was YES. [2024-06-27 22:06:38,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6685 conditions, 1365 events. 704/1365 cut-off events. For 17563/17563 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7577 event pairs, 229 based on Foata normal form. 1/1316 useless extension candidates. Maximal degree in co-relation 6630. Up to 1049 conditions per place. [2024-06-27 22:06:38,220 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 135 selfloop transitions, 46 changer transitions 0/189 dead transitions. [2024-06-27 22:06:38,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 189 transitions, 1902 flow [2024-06-27 22:06:38,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:38,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:38,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 22:06:38,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47953216374269003 [2024-06-27 22:06:38,222 INFO L175 Difference]: Start difference. First operand has 120 places, 152 transitions, 1308 flow. Second operand 9 states and 164 transitions. [2024-06-27 22:06:38,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 189 transitions, 1902 flow [2024-06-27 22:06:38,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 189 transitions, 1850 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 22:06:38,252 INFO L231 Difference]: Finished difference. Result has 122 places, 163 transitions, 1530 flow [2024-06-27 22:06:38,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1530, PETRI_PLACES=122, PETRI_TRANSITIONS=163} [2024-06-27 22:06:38,252 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 80 predicate places. [2024-06-27 22:06:38,252 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 163 transitions, 1530 flow [2024-06-27 22:06:38,253 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 22:06:38,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:38,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:38,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:06:38,253 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:38,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:38,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1185586049, now seen corresponding path program 2 times [2024-06-27 22:06:38,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:38,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146450973] [2024-06-27 22:06:38,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:38,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:39,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:39,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:39,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146450973] [2024-06-27 22:06:39,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146450973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:39,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:39,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:39,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694173326] [2024-06-27 22:06:39,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:39,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:39,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:39,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:39,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:39,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:06:39,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 163 transitions, 1530 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 22:06:39,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:39,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:06:39,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:39,661 INFO L124 PetriNetUnfolderBase]: 729/1403 cut-off events. [2024-06-27 22:06:39,661 INFO L125 PetriNetUnfolderBase]: For 19927/19927 co-relation queries the response was YES. [2024-06-27 22:06:39,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7239 conditions, 1403 events. 729/1403 cut-off events. For 19927/19927 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7770 event pairs, 235 based on Foata normal form. 1/1354 useless extension candidates. Maximal degree in co-relation 7184. Up to 1079 conditions per place. [2024-06-27 22:06:39,670 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 138 selfloop transitions, 54 changer transitions 0/200 dead transitions. [2024-06-27 22:06:39,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 200 transitions, 2228 flow [2024-06-27 22:06:39,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:39,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:39,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 22:06:39,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47953216374269003 [2024-06-27 22:06:39,671 INFO L175 Difference]: Start difference. First operand has 122 places, 163 transitions, 1530 flow. Second operand 9 states and 164 transitions. [2024-06-27 22:06:39,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 200 transitions, 2228 flow [2024-06-27 22:06:39,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 200 transitions, 1960 flow, removed 113 selfloop flow, removed 4 redundant places. [2024-06-27 22:06:39,699 INFO L231 Difference]: Finished difference. Result has 128 places, 176 transitions, 1644 flow [2024-06-27 22:06:39,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1372, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1644, PETRI_PLACES=128, PETRI_TRANSITIONS=176} [2024-06-27 22:06:39,700 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 86 predicate places. [2024-06-27 22:06:39,700 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 176 transitions, 1644 flow [2024-06-27 22:06:39,700 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 22:06:39,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:39,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:39,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:06:39,701 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:39,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:39,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1190226749, now seen corresponding path program 3 times [2024-06-27 22:06:39,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:39,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067950775] [2024-06-27 22:06:39,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:39,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:40,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:40,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067950775] [2024-06-27 22:06:40,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067950775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:40,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:40,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:40,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319309695] [2024-06-27 22:06:40,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:40,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:40,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:40,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:40,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:40,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:06:40,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 176 transitions, 1644 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 22:06:40,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:40,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:06:40,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:41,145 INFO L124 PetriNetUnfolderBase]: 737/1415 cut-off events. [2024-06-27 22:06:41,145 INFO L125 PetriNetUnfolderBase]: For 21633/21633 co-relation queries the response was YES. [2024-06-27 22:06:41,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7499 conditions, 1415 events. 737/1415 cut-off events. For 21633/21633 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7848 event pairs, 229 based on Foata normal form. 1/1365 useless extension candidates. Maximal degree in co-relation 7441. Up to 1060 conditions per place. [2024-06-27 22:06:41,156 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 129 selfloop transitions, 66 changer transitions 0/203 dead transitions. [2024-06-27 22:06:41,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 203 transitions, 2188 flow [2024-06-27 22:06:41,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:41,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:41,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 22:06:41,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47953216374269003 [2024-06-27 22:06:41,157 INFO L175 Difference]: Start difference. First operand has 128 places, 176 transitions, 1644 flow. Second operand 9 states and 164 transitions. [2024-06-27 22:06:41,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 203 transitions, 2188 flow [2024-06-27 22:06:41,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 203 transitions, 2082 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-27 22:06:41,182 INFO L231 Difference]: Finished difference. Result has 133 places, 179 transitions, 1752 flow [2024-06-27 22:06:41,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1752, PETRI_PLACES=133, PETRI_TRANSITIONS=179} [2024-06-27 22:06:41,183 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 91 predicate places. [2024-06-27 22:06:41,183 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 179 transitions, 1752 flow [2024-06-27 22:06:41,183 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 22:06:41,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:41,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:41,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:06:41,184 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:41,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:41,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1190264197, now seen corresponding path program 1 times [2024-06-27 22:06:41,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:41,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93812851] [2024-06-27 22:06:41,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:41,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:42,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:42,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:42,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93812851] [2024-06-27 22:06:42,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93812851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:42,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:42,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:42,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795885102] [2024-06-27 22:06:42,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:42,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:42,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:42,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:42,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:42,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:06:42,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 179 transitions, 1752 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 22:06:42,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:42,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:06:42,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:42,876 INFO L124 PetriNetUnfolderBase]: 748/1434 cut-off events. [2024-06-27 22:06:42,876 INFO L125 PetriNetUnfolderBase]: For 23762/23762 co-relation queries the response was YES. [2024-06-27 22:06:42,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7791 conditions, 1434 events. 748/1434 cut-off events. For 23762/23762 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7963 event pairs, 229 based on Foata normal form. 1/1385 useless extension candidates. Maximal degree in co-relation 7732. Up to 1130 conditions per place. [2024-06-27 22:06:42,885 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 150 selfloop transitions, 49 changer transitions 0/207 dead transitions. [2024-06-27 22:06:42,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 207 transitions, 2302 flow [2024-06-27 22:06:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:42,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:42,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:06:42,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 22:06:42,887 INFO L175 Difference]: Start difference. First operand has 133 places, 179 transitions, 1752 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:06:42,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 207 transitions, 2302 flow [2024-06-27 22:06:42,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 207 transitions, 2114 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-27 22:06:42,914 INFO L231 Difference]: Finished difference. Result has 135 places, 181 transitions, 1701 flow [2024-06-27 22:06:42,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1564, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1701, PETRI_PLACES=135, PETRI_TRANSITIONS=181} [2024-06-27 22:06:42,915 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 93 predicate places. [2024-06-27 22:06:42,915 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 181 transitions, 1701 flow [2024-06-27 22:06:42,915 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 22:06:42,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:42,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:42,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:06:42,916 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:42,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:42,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1336145433, now seen corresponding path program 4 times [2024-06-27 22:06:42,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:42,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147500128] [2024-06-27 22:06:42,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:42,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:43,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:43,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:43,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147500128] [2024-06-27 22:06:43,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147500128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:43,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:43,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:43,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370894481] [2024-06-27 22:06:43,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:43,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:43,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:43,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:43,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:43,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:06:43,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 181 transitions, 1701 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 22:06:43,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:43,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:06:43,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:44,353 INFO L124 PetriNetUnfolderBase]: 781/1478 cut-off events. [2024-06-27 22:06:44,353 INFO L125 PetriNetUnfolderBase]: For 24755/24755 co-relation queries the response was YES. [2024-06-27 22:06:44,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8097 conditions, 1478 events. 781/1478 cut-off events. For 24755/24755 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 8119 event pairs, 184 based on Foata normal form. 1/1428 useless extension candidates. Maximal degree in co-relation 8037. Up to 1149 conditions per place. [2024-06-27 22:06:44,361 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 149 selfloop transitions, 65 changer transitions 0/222 dead transitions. [2024-06-27 22:06:44,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 222 transitions, 2397 flow [2024-06-27 22:06:44,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:44,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:44,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 22:06:44,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47953216374269003 [2024-06-27 22:06:44,363 INFO L175 Difference]: Start difference. First operand has 135 places, 181 transitions, 1701 flow. Second operand 9 states and 164 transitions. [2024-06-27 22:06:44,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 222 transitions, 2397 flow [2024-06-27 22:06:44,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 222 transitions, 2294 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 22:06:44,391 INFO L231 Difference]: Finished difference. Result has 138 places, 200 transitions, 1973 flow [2024-06-27 22:06:44,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1598, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1973, PETRI_PLACES=138, PETRI_TRANSITIONS=200} [2024-06-27 22:06:44,392 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 96 predicate places. [2024-06-27 22:06:44,392 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 200 transitions, 1973 flow [2024-06-27 22:06:44,392 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 22:06:44,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:44,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:44,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:06:44,393 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:44,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:44,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1341501055, now seen corresponding path program 2 times [2024-06-27 22:06:44,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:44,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204246535] [2024-06-27 22:06:44,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:44,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:45,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:45,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:45,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204246535] [2024-06-27 22:06:45,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204246535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:45,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:45,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:45,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546157671] [2024-06-27 22:06:45,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:45,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:45,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:45,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:45,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:45,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:06:45,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 200 transitions, 1973 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 22:06:45,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:45,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:06:45,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:46,282 INFO L124 PetriNetUnfolderBase]: 793/1500 cut-off events. [2024-06-27 22:06:46,283 INFO L125 PetriNetUnfolderBase]: For 27444/27444 co-relation queries the response was YES. [2024-06-27 22:06:46,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8474 conditions, 1500 events. 793/1500 cut-off events. For 27444/27444 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8309 event pairs, 240 based on Foata normal form. 1/1451 useless extension candidates. Maximal degree in co-relation 8412. Up to 1199 conditions per place. [2024-06-27 22:06:46,293 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 168 selfloop transitions, 51 changer transitions 0/227 dead transitions. [2024-06-27 22:06:46,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 227 transitions, 2579 flow [2024-06-27 22:06:46,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:46,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:46,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 22:06:46,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47076023391812866 [2024-06-27 22:06:46,295 INFO L175 Difference]: Start difference. First operand has 138 places, 200 transitions, 1973 flow. Second operand 9 states and 161 transitions. [2024-06-27 22:06:46,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 227 transitions, 2579 flow [2024-06-27 22:06:46,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 227 transitions, 2457 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-27 22:06:46,334 INFO L231 Difference]: Finished difference. Result has 143 places, 205 transitions, 2065 flow [2024-06-27 22:06:46,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2065, PETRI_PLACES=143, PETRI_TRANSITIONS=205} [2024-06-27 22:06:46,335 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 101 predicate places. [2024-06-27 22:06:46,335 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 205 transitions, 2065 flow [2024-06-27 22:06:46,336 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 22:06:46,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:46,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:46,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:06:46,336 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:46,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:46,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1859374405, now seen corresponding path program 5 times [2024-06-27 22:06:46,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:46,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495378597] [2024-06-27 22:06:46,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:46,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:47,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:47,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:47,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495378597] [2024-06-27 22:06:47,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495378597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:47,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:47,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:47,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500445038] [2024-06-27 22:06:47,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:47,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:47,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:47,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:47,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:47,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:06:47,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 205 transitions, 2065 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 22:06:47,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:47,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:06:47,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:48,024 INFO L124 PetriNetUnfolderBase]: 805/1514 cut-off events. [2024-06-27 22:06:48,024 INFO L125 PetriNetUnfolderBase]: For 29612/29612 co-relation queries the response was YES. [2024-06-27 22:06:48,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8719 conditions, 1514 events. 805/1514 cut-off events. For 29612/29612 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8328 event pairs, 186 based on Foata normal form. 1/1464 useless extension candidates. Maximal degree in co-relation 8656. Up to 1160 conditions per place. [2024-06-27 22:06:48,035 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 148 selfloop transitions, 77 changer transitions 0/233 dead transitions. [2024-06-27 22:06:48,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 233 transitions, 2685 flow [2024-06-27 22:06:48,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:48,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:48,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 22:06:48,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2024-06-27 22:06:48,036 INFO L175 Difference]: Start difference. First operand has 143 places, 205 transitions, 2065 flow. Second operand 9 states and 165 transitions. [2024-06-27 22:06:48,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 233 transitions, 2685 flow [2024-06-27 22:06:48,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 233 transitions, 2517 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-27 22:06:48,070 INFO L231 Difference]: Finished difference. Result has 145 places, 211 transitions, 2168 flow [2024-06-27 22:06:48,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1897, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2168, PETRI_PLACES=145, PETRI_TRANSITIONS=211} [2024-06-27 22:06:48,070 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 103 predicate places. [2024-06-27 22:06:48,071 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 211 transitions, 2168 flow [2024-06-27 22:06:48,071 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 22:06:48,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:48,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:48,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:06:48,071 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:48,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:48,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1404882633, now seen corresponding path program 1 times [2024-06-27 22:06:48,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:48,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092504806] [2024-06-27 22:06:48,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:48,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:49,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:49,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:49,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092504806] [2024-06-27 22:06:49,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092504806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:49,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:49,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:06:49,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85506064] [2024-06-27 22:06:49,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:49,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:06:49,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:49,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:06:49,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:06:49,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:06:49,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 211 transitions, 2168 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:49,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:49,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:06:49,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:49,928 INFO L124 PetriNetUnfolderBase]: 732/1442 cut-off events. [2024-06-27 22:06:49,928 INFO L125 PetriNetUnfolderBase]: For 33027/33068 co-relation queries the response was YES. [2024-06-27 22:06:49,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8289 conditions, 1442 events. 732/1442 cut-off events. For 33027/33068 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8360 event pairs, 243 based on Foata normal form. 21/1404 useless extension candidates. Maximal degree in co-relation 8226. Up to 1043 conditions per place. [2024-06-27 22:06:49,938 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 163 selfloop transitions, 35 changer transitions 0/236 dead transitions. [2024-06-27 22:06:49,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 236 transitions, 2754 flow [2024-06-27 22:06:49,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:06:49,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:06:49,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2024-06-27 22:06:49,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.556390977443609 [2024-06-27 22:06:49,939 INFO L175 Difference]: Start difference. First operand has 145 places, 211 transitions, 2168 flow. Second operand 7 states and 148 transitions. [2024-06-27 22:06:49,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 236 transitions, 2754 flow [2024-06-27 22:06:49,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 236 transitions, 2539 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-27 22:06:49,972 INFO L231 Difference]: Finished difference. Result has 147 places, 217 transitions, 2171 flow [2024-06-27 22:06:49,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1953, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2171, PETRI_PLACES=147, PETRI_TRANSITIONS=217} [2024-06-27 22:06:49,973 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 105 predicate places. [2024-06-27 22:06:49,973 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 217 transitions, 2171 flow [2024-06-27 22:06:49,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:49,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:49,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:49,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:06:49,973 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:49,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:49,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1864976043, now seen corresponding path program 3 times [2024-06-27 22:06:49,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:49,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36874839] [2024-06-27 22:06:49,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:49,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:51,701 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 22:06:51,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:51,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36874839] [2024-06-27 22:06:51,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36874839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:51,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:51,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:06:51,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755184467] [2024-06-27 22:06:51,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:51,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:06:51,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:51,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:06:51,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:06:51,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:06:51,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 217 transitions, 2171 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:51,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:51,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:06:51,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:52,260 INFO L124 PetriNetUnfolderBase]: 851/1589 cut-off events. [2024-06-27 22:06:52,260 INFO L125 PetriNetUnfolderBase]: For 35153/35153 co-relation queries the response was YES. [2024-06-27 22:06:52,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9581 conditions, 1589 events. 851/1589 cut-off events. For 35153/35153 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8842 event pairs, 236 based on Foata normal form. 1/1539 useless extension candidates. Maximal degree in co-relation 9515. Up to 1220 conditions per place. [2024-06-27 22:06:52,271 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 162 selfloop transitions, 79 changer transitions 0/249 dead transitions. [2024-06-27 22:06:52,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 249 transitions, 2990 flow [2024-06-27 22:06:52,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:52,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:52,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:06:52,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-06-27 22:06:52,273 INFO L175 Difference]: Start difference. First operand has 147 places, 217 transitions, 2171 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:06:52,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 249 transitions, 2990 flow [2024-06-27 22:06:52,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 249 transitions, 2907 flow, removed 33 selfloop flow, removed 2 redundant places. [2024-06-27 22:06:52,318 INFO L231 Difference]: Finished difference. Result has 155 places, 226 transitions, 2483 flow [2024-06-27 22:06:52,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2088, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2483, PETRI_PLACES=155, PETRI_TRANSITIONS=226} [2024-06-27 22:06:52,318 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 113 predicate places. [2024-06-27 22:06:52,319 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 226 transitions, 2483 flow [2024-06-27 22:06:52,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:06:52,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:52,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:52,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:06:52,319 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:52,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:52,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1335908035, now seen corresponding path program 4 times [2024-06-27 22:06:52,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:52,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123091377] [2024-06-27 22:06:52,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:52,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:53,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:53,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:53,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123091377] [2024-06-27 22:06:53,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123091377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:53,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:53,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:53,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279105183] [2024-06-27 22:06:53,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:53,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:53,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:53,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:53,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:53,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:06:53,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 226 transitions, 2483 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 22:06:53,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:53,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:06:53,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:53,905 INFO L124 PetriNetUnfolderBase]: 852/1595 cut-off events. [2024-06-27 22:06:53,905 INFO L125 PetriNetUnfolderBase]: For 36803/36803 co-relation queries the response was YES. [2024-06-27 22:06:53,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9864 conditions, 1595 events. 852/1595 cut-off events. For 36803/36803 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8882 event pairs, 239 based on Foata normal form. 1/1544 useless extension candidates. Maximal degree in co-relation 9794. Up to 1261 conditions per place. [2024-06-27 22:06:53,917 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 178 selfloop transitions, 66 changer transitions 0/252 dead transitions. [2024-06-27 22:06:53,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 252 transitions, 3140 flow [2024-06-27 22:06:53,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:53,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:53,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:06:53,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 22:06:53,918 INFO L175 Difference]: Start difference. First operand has 155 places, 226 transitions, 2483 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:06:53,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 252 transitions, 3140 flow [2024-06-27 22:06:53,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 252 transitions, 2888 flow, removed 89 selfloop flow, removed 5 redundant places. [2024-06-27 22:06:53,971 INFO L231 Difference]: Finished difference. Result has 159 places, 228 transitions, 2451 flow [2024-06-27 22:06:53,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2265, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2451, PETRI_PLACES=159, PETRI_TRANSITIONS=228} [2024-06-27 22:06:53,971 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 117 predicate places. [2024-06-27 22:06:53,971 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 228 transitions, 2451 flow [2024-06-27 22:06:53,971 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 22:06:53,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:53,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:53,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:06:53,972 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:53,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:53,972 INFO L85 PathProgramCache]: Analyzing trace with hash -310799973, now seen corresponding path program 6 times [2024-06-27 22:06:53,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:53,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865081750] [2024-06-27 22:06:53,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:53,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:55,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:55,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:55,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865081750] [2024-06-27 22:06:55,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865081750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:55,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:55,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:55,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803683297] [2024-06-27 22:06:55,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:55,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:55,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:55,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:55,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:55,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:06:55,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 228 transitions, 2451 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 22:06:55,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:55,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:06:55,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:55,639 INFO L124 PetriNetUnfolderBase]: 860/1603 cut-off events. [2024-06-27 22:06:55,640 INFO L125 PetriNetUnfolderBase]: For 38033/38033 co-relation queries the response was YES. [2024-06-27 22:06:55,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10051 conditions, 1603 events. 860/1603 cut-off events. For 38033/38033 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8862 event pairs, 185 based on Foata normal form. 1/1551 useless extension candidates. Maximal degree in co-relation 9979. Up to 1180 conditions per place. [2024-06-27 22:06:55,650 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 142 selfloop transitions, 103 changer transitions 0/253 dead transitions. [2024-06-27 22:06:55,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 253 transitions, 3113 flow [2024-06-27 22:06:55,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:06:55,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:06:55,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 22:06:55,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47953216374269003 [2024-06-27 22:06:55,651 INFO L175 Difference]: Start difference. First operand has 159 places, 228 transitions, 2451 flow. Second operand 9 states and 164 transitions. [2024-06-27 22:06:55,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 253 transitions, 3113 flow [2024-06-27 22:06:55,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 253 transitions, 2935 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-27 22:06:55,699 INFO L231 Difference]: Finished difference. Result has 161 places, 231 transitions, 2584 flow [2024-06-27 22:06:55,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2273, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2584, PETRI_PLACES=161, PETRI_TRANSITIONS=231} [2024-06-27 22:06:55,699 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 119 predicate places. [2024-06-27 22:06:55,700 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 231 transitions, 2584 flow [2024-06-27 22:06:55,700 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 22:06:55,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:55,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:55,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:06:55,700 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:55,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:55,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1504151073, now seen corresponding path program 7 times [2024-06-27 22:06:55,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:55,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220125272] [2024-06-27 22:06:55,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:55,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:56,595 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 22:06:56,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:56,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220125272] [2024-06-27 22:06:56,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220125272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:56,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:56,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:56,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717708389] [2024-06-27 22:06:56,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:56,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:56,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:56,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:56,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:56,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:06:56,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 231 transitions, 2584 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 22:06:56,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:56,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:06:56,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:57,168 INFO L124 PetriNetUnfolderBase]: 892/1653 cut-off events. [2024-06-27 22:06:57,169 INFO L125 PetriNetUnfolderBase]: For 41019/41019 co-relation queries the response was YES. [2024-06-27 22:06:57,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10594 conditions, 1653 events. 892/1653 cut-off events. For 41019/41019 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9239 event pairs, 154 based on Foata normal form. 1/1598 useless extension candidates. Maximal degree in co-relation 10521. Up to 1312 conditions per place. [2024-06-27 22:06:57,182 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 187 selfloop transitions, 75 changer transitions 0/270 dead transitions. [2024-06-27 22:06:57,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 270 transitions, 3472 flow [2024-06-27 22:06:57,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:57,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:57,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 22:06:57,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-27 22:06:57,183 INFO L175 Difference]: Start difference. First operand has 161 places, 231 transitions, 2584 flow. Second operand 8 states and 148 transitions. [2024-06-27 22:06:57,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 270 transitions, 3472 flow [2024-06-27 22:06:57,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 270 transitions, 3147 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-27 22:06:57,233 INFO L231 Difference]: Finished difference. Result has 162 places, 253 transitions, 2761 flow [2024-06-27 22:06:57,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2297, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2761, PETRI_PLACES=162, PETRI_TRANSITIONS=253} [2024-06-27 22:06:57,234 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 120 predicate places. [2024-06-27 22:06:57,234 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 253 transitions, 2761 flow [2024-06-27 22:06:57,234 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 22:06:57,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:57,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:57,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:06:57,234 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:57,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:57,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1504000165, now seen corresponding path program 5 times [2024-06-27 22:06:57,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:57,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434774261] [2024-06-27 22:06:57,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:57,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:06:58,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:06:58,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:06:58,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434774261] [2024-06-27 22:06:58,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434774261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:06:58,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:06:58,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:06:58,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319584946] [2024-06-27 22:06:58,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:06:58,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:06:58,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:06:58,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:06:58,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:06:58,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:06:58,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 253 transitions, 2761 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 22:06:58,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:06:58,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:06:58,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:06:59,076 INFO L124 PetriNetUnfolderBase]: 908/1678 cut-off events. [2024-06-27 22:06:59,077 INFO L125 PetriNetUnfolderBase]: For 43577/43577 co-relation queries the response was YES. [2024-06-27 22:06:59,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10796 conditions, 1678 events. 908/1678 cut-off events. For 43577/43577 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9399 event pairs, 153 based on Foata normal form. 1/1625 useless extension candidates. Maximal degree in co-relation 10722. Up to 1373 conditions per place. [2024-06-27 22:06:59,087 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 218 selfloop transitions, 53 changer transitions 0/279 dead transitions. [2024-06-27 22:06:59,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 279 transitions, 3511 flow [2024-06-27 22:06:59,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:06:59,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:06:59,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 22:06:59,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4769736842105263 [2024-06-27 22:06:59,089 INFO L175 Difference]: Start difference. First operand has 162 places, 253 transitions, 2761 flow. Second operand 8 states and 145 transitions. [2024-06-27 22:06:59,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 279 transitions, 3511 flow [2024-06-27 22:06:59,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 279 transitions, 3359 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-27 22:06:59,146 INFO L231 Difference]: Finished difference. Result has 167 places, 262 transitions, 2897 flow [2024-06-27 22:06:59,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2609, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2897, PETRI_PLACES=167, PETRI_TRANSITIONS=262} [2024-06-27 22:06:59,147 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 125 predicate places. [2024-06-27 22:06:59,147 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 262 transitions, 2897 flow [2024-06-27 22:06:59,147 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 22:06:59,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:06:59,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:06:59,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:06:59,147 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:06:59,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:06:59,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1504000413, now seen corresponding path program 8 times [2024-06-27 22:06:59,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:06:59,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472460876] [2024-06-27 22:06:59,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:06:59,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:06:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:00,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:00,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:00,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472460876] [2024-06-27 22:07:00,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472460876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:00,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:00,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:00,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082493678] [2024-06-27 22:07:00,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:00,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:00,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:00,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:00,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:00,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:07:00,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 262 transitions, 2897 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 22:07:00,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:00,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:07:00,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:00,841 INFO L124 PetriNetUnfolderBase]: 924/1701 cut-off events. [2024-06-27 22:07:00,841 INFO L125 PetriNetUnfolderBase]: For 46400/46400 co-relation queries the response was YES. [2024-06-27 22:07:00,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11075 conditions, 1701 events. 924/1701 cut-off events. For 46400/46400 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9498 event pairs, 155 based on Foata normal form. 1/1646 useless extension candidates. Maximal degree in co-relation 10998. Up to 1334 conditions per place. [2024-06-27 22:07:00,853 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 190 selfloop transitions, 90 changer transitions 0/288 dead transitions. [2024-06-27 22:07:00,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 288 transitions, 3657 flow [2024-06-27 22:07:00,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:00,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:00,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 22:07:00,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4901315789473684 [2024-06-27 22:07:00,854 INFO L175 Difference]: Start difference. First operand has 167 places, 262 transitions, 2897 flow. Second operand 8 states and 149 transitions. [2024-06-27 22:07:00,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 288 transitions, 3657 flow [2024-06-27 22:07:00,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 288 transitions, 3485 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-27 22:07:00,917 INFO L231 Difference]: Finished difference. Result has 169 places, 271 transitions, 3079 flow [2024-06-27 22:07:00,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2725, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3079, PETRI_PLACES=169, PETRI_TRANSITIONS=271} [2024-06-27 22:07:00,918 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 127 predicate places. [2024-06-27 22:07:00,918 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 271 transitions, 3079 flow [2024-06-27 22:07:00,918 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 22:07:00,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:00,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:00,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:07:00,919 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:00,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:00,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1498407393, now seen corresponding path program 9 times [2024-06-27 22:07:00,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:00,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089205037] [2024-06-27 22:07:00,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:00,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:01,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:01,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:01,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089205037] [2024-06-27 22:07:01,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089205037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:01,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:01,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:01,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168876325] [2024-06-27 22:07:01,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:01,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:01,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:01,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:01,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:01,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:07:01,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 271 transitions, 3079 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 22:07:01,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:01,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:07:01,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:02,489 INFO L124 PetriNetUnfolderBase]: 936/1719 cut-off events. [2024-06-27 22:07:02,489 INFO L125 PetriNetUnfolderBase]: For 50148/50148 co-relation queries the response was YES. [2024-06-27 22:07:02,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11443 conditions, 1719 events. 936/1719 cut-off events. For 50148/50148 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9610 event pairs, 157 based on Foata normal form. 1/1664 useless extension candidates. Maximal degree in co-relation 11365. Up to 1322 conditions per place. [2024-06-27 22:07:02,503 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 183 selfloop transitions, 103 changer transitions 0/294 dead transitions. [2024-06-27 22:07:02,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 294 transitions, 3837 flow [2024-06-27 22:07:02,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:02,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:02,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 22:07:02,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934210526315789 [2024-06-27 22:07:02,504 INFO L175 Difference]: Start difference. First operand has 169 places, 271 transitions, 3079 flow. Second operand 8 states and 150 transitions. [2024-06-27 22:07:02,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 294 transitions, 3837 flow [2024-06-27 22:07:02,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 294 transitions, 3601 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-27 22:07:02,601 INFO L231 Difference]: Finished difference. Result has 172 places, 277 transitions, 3195 flow [2024-06-27 22:07:02,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2843, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3195, PETRI_PLACES=172, PETRI_TRANSITIONS=277} [2024-06-27 22:07:02,601 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 130 predicate places. [2024-06-27 22:07:02,602 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 277 transitions, 3195 flow [2024-06-27 22:07:02,602 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 22:07:02,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:02,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:02,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:07:02,602 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:02,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:02,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1498407145, now seen corresponding path program 6 times [2024-06-27 22:07:02,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:02,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438790525] [2024-06-27 22:07:02,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:02,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:03,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:03,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:03,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438790525] [2024-06-27 22:07:03,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438790525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:03,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:03,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:03,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854369434] [2024-06-27 22:07:03,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:03,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:03,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:03,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:03,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:03,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:07:03,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 277 transitions, 3195 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 22:07:03,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:03,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:07:03,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:04,270 INFO L124 PetriNetUnfolderBase]: 948/1738 cut-off events. [2024-06-27 22:07:04,270 INFO L125 PetriNetUnfolderBase]: For 53276/53276 co-relation queries the response was YES. [2024-06-27 22:07:04,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11733 conditions, 1738 events. 948/1738 cut-off events. For 53276/53276 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9743 event pairs, 153 based on Foata normal form. 1/1685 useless extension candidates. Maximal degree in co-relation 11654. Up to 1416 conditions per place. [2024-06-27 22:07:04,318 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 232 selfloop transitions, 60 changer transitions 0/300 dead transitions. [2024-06-27 22:07:04,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 300 transitions, 3978 flow [2024-06-27 22:07:04,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:04,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:04,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 22:07:04,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2024-06-27 22:07:04,320 INFO L175 Difference]: Start difference. First operand has 172 places, 277 transitions, 3195 flow. Second operand 8 states and 146 transitions. [2024-06-27 22:07:04,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 300 transitions, 3978 flow [2024-06-27 22:07:04,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 300 transitions, 3680 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-27 22:07:04,381 INFO L231 Difference]: Finished difference. Result has 174 places, 283 transitions, 3176 flow [2024-06-27 22:07:04,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2897, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3176, PETRI_PLACES=174, PETRI_TRANSITIONS=283} [2024-06-27 22:07:04,382 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 132 predicate places. [2024-06-27 22:07:04,382 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 283 transitions, 3176 flow [2024-06-27 22:07:04,382 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 22:07:04,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:04,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:04,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:07:04,383 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:04,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:04,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1498398775, now seen corresponding path program 7 times [2024-06-27 22:07:04,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:04,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697798334] [2024-06-27 22:07:04,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:04,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:05,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:05,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:05,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697798334] [2024-06-27 22:07:05,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697798334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:05,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:05,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:05,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517288366] [2024-06-27 22:07:05,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:05,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:05,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:05,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:05,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:06,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:07:06,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 283 transitions, 3176 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 22:07:06,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:06,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:07:06,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:06,563 INFO L124 PetriNetUnfolderBase]: 960/1756 cut-off events. [2024-06-27 22:07:06,564 INFO L125 PetriNetUnfolderBase]: For 55764/55764 co-relation queries the response was YES. [2024-06-27 22:07:06,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11879 conditions, 1756 events. 960/1756 cut-off events. For 55764/55764 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9847 event pairs, 153 based on Foata normal form. 1/1703 useless extension candidates. Maximal degree in co-relation 11799. Up to 1401 conditions per place. [2024-06-27 22:07:06,576 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 219 selfloop transitions, 79 changer transitions 0/306 dead transitions. [2024-06-27 22:07:06,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 306 transitions, 3959 flow [2024-06-27 22:07:06,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:06,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:06,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 22:07:06,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48355263157894735 [2024-06-27 22:07:06,577 INFO L175 Difference]: Start difference. First operand has 174 places, 283 transitions, 3176 flow. Second operand 8 states and 147 transitions. [2024-06-27 22:07:06,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 306 transitions, 3959 flow [2024-06-27 22:07:06,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 306 transitions, 3745 flow, removed 51 selfloop flow, removed 6 redundant places. [2024-06-27 22:07:06,653 INFO L231 Difference]: Finished difference. Result has 176 places, 289 transitions, 3267 flow [2024-06-27 22:07:06,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2962, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3267, PETRI_PLACES=176, PETRI_TRANSITIONS=289} [2024-06-27 22:07:06,653 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 134 predicate places. [2024-06-27 22:07:06,653 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 289 transitions, 3267 flow [2024-06-27 22:07:06,653 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 22:07:06,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:06,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:06,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:07:06,654 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:06,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:06,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1146603391, now seen corresponding path program 8 times [2024-06-27 22:07:06,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:06,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012055201] [2024-06-27 22:07:06,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:06,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:08,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:08,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:08,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012055201] [2024-06-27 22:07:08,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012055201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:08,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:08,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:08,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15831234] [2024-06-27 22:07:08,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:08,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:08,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:08,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:08,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:08,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:07:08,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 289 transitions, 3267 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:08,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:08,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:07:08,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:08,820 INFO L124 PetriNetUnfolderBase]: 983/1813 cut-off events. [2024-06-27 22:07:08,820 INFO L125 PetriNetUnfolderBase]: For 60187/60187 co-relation queries the response was YES. [2024-06-27 22:07:08,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12436 conditions, 1813 events. 983/1813 cut-off events. For 60187/60187 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10343 event pairs, 159 based on Foata normal form. 1/1755 useless extension candidates. Maximal degree in co-relation 12355. Up to 1269 conditions per place. [2024-06-27 22:07:08,833 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 195 selfloop transitions, 118 changer transitions 0/321 dead transitions. [2024-06-27 22:07:08,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 321 transitions, 4366 flow [2024-06-27 22:07:08,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:08,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:08,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 22:07:08,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47076023391812866 [2024-06-27 22:07:08,834 INFO L175 Difference]: Start difference. First operand has 176 places, 289 transitions, 3267 flow. Second operand 9 states and 161 transitions. [2024-06-27 22:07:08,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 321 transitions, 4366 flow [2024-06-27 22:07:08,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 321 transitions, 4118 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-27 22:07:08,915 INFO L231 Difference]: Finished difference. Result has 181 places, 296 transitions, 3504 flow [2024-06-27 22:07:08,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3019, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3504, PETRI_PLACES=181, PETRI_TRANSITIONS=296} [2024-06-27 22:07:08,916 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 139 predicate places. [2024-06-27 22:07:08,916 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 296 transitions, 3504 flow [2024-06-27 22:07:08,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:08,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:08,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:08,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:07:08,917 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:08,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:08,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1146603081, now seen corresponding path program 2 times [2024-06-27 22:07:08,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:08,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493296869] [2024-06-27 22:07:08,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:08,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:10,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:10,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:10,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493296869] [2024-06-27 22:07:10,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493296869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:10,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:10,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:10,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059500101] [2024-06-27 22:07:10,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:10,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:10,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:10,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:10,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:10,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:07:10,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 296 transitions, 3504 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:10,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:10,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:07:10,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:10,880 INFO L124 PetriNetUnfolderBase]: 896/1749 cut-off events. [2024-06-27 22:07:10,881 INFO L125 PetriNetUnfolderBase]: For 64607/64627 co-relation queries the response was YES. [2024-06-27 22:07:10,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11935 conditions, 1749 events. 896/1749 cut-off events. For 64607/64627 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10653 event pairs, 238 based on Foata normal form. 15/1690 useless extension candidates. Maximal degree in co-relation 11851. Up to 1155 conditions per place. [2024-06-27 22:07:10,894 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 229 selfloop transitions, 51 changer transitions 0/330 dead transitions. [2024-06-27 22:07:10,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 330 transitions, 4604 flow [2024-06-27 22:07:10,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:07:10,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:07:10,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2024-06-27 22:07:10,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.556390977443609 [2024-06-27 22:07:10,895 INFO L175 Difference]: Start difference. First operand has 181 places, 296 transitions, 3504 flow. Second operand 7 states and 148 transitions. [2024-06-27 22:07:10,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 330 transitions, 4604 flow [2024-06-27 22:07:10,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 330 transitions, 4458 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-27 22:07:10,988 INFO L231 Difference]: Finished difference. Result has 185 places, 306 transitions, 3622 flow [2024-06-27 22:07:10,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3358, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3622, PETRI_PLACES=185, PETRI_TRANSITIONS=306} [2024-06-27 22:07:10,989 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 143 predicate places. [2024-06-27 22:07:10,989 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 306 transitions, 3622 flow [2024-06-27 22:07:10,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:10,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:10,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:10,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:07:10,990 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:10,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:10,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1556661079, now seen corresponding path program 9 times [2024-06-27 22:07:10,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:10,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132327945] [2024-06-27 22:07:10,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:10,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:12,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:12,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:12,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132327945] [2024-06-27 22:07:12,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132327945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:12,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:12,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:12,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997666497] [2024-06-27 22:07:12,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:12,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:12,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:12,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:12,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:12,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:07:12,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 306 transitions, 3622 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 22:07:12,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:12,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:07:12,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:12,841 INFO L124 PetriNetUnfolderBase]: 1057/1954 cut-off events. [2024-06-27 22:07:12,842 INFO L125 PetriNetUnfolderBase]: For 69303/69303 co-relation queries the response was YES. [2024-06-27 22:07:12,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14088 conditions, 1954 events. 1057/1954 cut-off events. For 69303/69303 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 11381 event pairs, 170 based on Foata normal form. 1/1889 useless extension candidates. Maximal degree in co-relation 14002. Up to 1538 conditions per place. [2024-06-27 22:07:12,866 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 241 selfloop transitions, 77 changer transitions 0/326 dead transitions. [2024-06-27 22:07:12,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 326 transitions, 4446 flow [2024-06-27 22:07:12,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:12,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:12,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 22:07:12,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4769736842105263 [2024-06-27 22:07:12,869 INFO L175 Difference]: Start difference. First operand has 185 places, 306 transitions, 3622 flow. Second operand 8 states and 145 transitions. [2024-06-27 22:07:12,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 326 transitions, 4446 flow [2024-06-27 22:07:13,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 326 transitions, 4393 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-27 22:07:13,019 INFO L231 Difference]: Finished difference. Result has 191 places, 309 transitions, 3857 flow [2024-06-27 22:07:13,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3569, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3857, PETRI_PLACES=191, PETRI_TRANSITIONS=309} [2024-06-27 22:07:13,020 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 149 predicate places. [2024-06-27 22:07:13,020 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 309 transitions, 3857 flow [2024-06-27 22:07:13,021 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 22:07:13,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:13,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:13,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:07:13,021 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:13,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:13,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1567145279, now seen corresponding path program 3 times [2024-06-27 22:07:13,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:13,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777280060] [2024-06-27 22:07:13,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:13,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:14,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:14,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:14,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777280060] [2024-06-27 22:07:14,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777280060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:14,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:14,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:14,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219447052] [2024-06-27 22:07:14,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:14,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:14,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:14,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:14,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:14,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:07:14,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 309 transitions, 3857 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:14,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:14,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:07:14,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:15,295 INFO L124 PetriNetUnfolderBase]: 994/1883 cut-off events. [2024-06-27 22:07:15,295 INFO L125 PetriNetUnfolderBase]: For 70584/70620 co-relation queries the response was YES. [2024-06-27 22:07:15,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13421 conditions, 1883 events. 994/1883 cut-off events. For 70584/70620 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11225 event pairs, 307 based on Foata normal form. 20/1833 useless extension candidates. Maximal degree in co-relation 13332. Up to 1421 conditions per place. [2024-06-27 22:07:15,312 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 269 selfloop transitions, 21 changer transitions 0/334 dead transitions. [2024-06-27 22:07:15,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 334 transitions, 4646 flow [2024-06-27 22:07:15,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:15,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:15,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:07:15,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 22:07:15,313 INFO L175 Difference]: Start difference. First operand has 191 places, 309 transitions, 3857 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:07:15,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 334 transitions, 4646 flow [2024-06-27 22:07:15,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 334 transitions, 4376 flow, removed 60 selfloop flow, removed 6 redundant places. [2024-06-27 22:07:15,424 INFO L231 Difference]: Finished difference. Result has 195 places, 310 transitions, 3654 flow [2024-06-27 22:07:15,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3587, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3654, PETRI_PLACES=195, PETRI_TRANSITIONS=310} [2024-06-27 22:07:15,425 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 153 predicate places. [2024-06-27 22:07:15,425 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 310 transitions, 3654 flow [2024-06-27 22:07:15,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:15,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:15,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:15,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:07:15,430 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:15,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:15,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1556660831, now seen corresponding path program 10 times [2024-06-27 22:07:15,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:15,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619971894] [2024-06-27 22:07:15,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:15,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:16,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:16,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:16,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619971894] [2024-06-27 22:07:16,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619971894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:16,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:16,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:16,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18089789] [2024-06-27 22:07:16,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:16,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:16,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:16,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:16,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:16,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:07:16,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 310 transitions, 3654 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 22:07:16,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:16,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:07:16,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:17,128 INFO L124 PetriNetUnfolderBase]: 1051/1943 cut-off events. [2024-06-27 22:07:17,128 INFO L125 PetriNetUnfolderBase]: For 68605/68605 co-relation queries the response was YES. [2024-06-27 22:07:17,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13823 conditions, 1943 events. 1051/1943 cut-off events. For 68605/68605 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11338 event pairs, 176 based on Foata normal form. 1/1877 useless extension candidates. Maximal degree in co-relation 13732. Up to 1389 conditions per place. [2024-06-27 22:07:17,145 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 172 selfloop transitions, 150 changer transitions 0/330 dead transitions. [2024-06-27 22:07:17,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 330 transitions, 4488 flow [2024-06-27 22:07:17,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:17,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:17,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 22:07:17,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619883040935672 [2024-06-27 22:07:17,147 INFO L175 Difference]: Start difference. First operand has 195 places, 310 transitions, 3654 flow. Second operand 9 states and 158 transitions. [2024-06-27 22:07:17,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 330 transitions, 4488 flow [2024-06-27 22:07:17,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 330 transitions, 4429 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 22:07:17,261 INFO L231 Difference]: Finished difference. Result has 196 places, 313 transitions, 4031 flow [2024-06-27 22:07:17,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3595, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4031, PETRI_PLACES=196, PETRI_TRANSITIONS=313} [2024-06-27 22:07:17,262 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 154 predicate places. [2024-06-27 22:07:17,262 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 313 transitions, 4031 flow [2024-06-27 22:07:17,262 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 22:07:17,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:17,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:17,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:07:17,263 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:17,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:17,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1556669759, now seen corresponding path program 4 times [2024-06-27 22:07:17,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:17,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559084038] [2024-06-27 22:07:17,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:17,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:18,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:18,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:18,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559084038] [2024-06-27 22:07:18,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559084038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:18,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:18,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:18,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621824235] [2024-06-27 22:07:18,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:18,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:18,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:18,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:18,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:18,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:07:18,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 313 transitions, 4031 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:18,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:18,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:07:18,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:19,035 INFO L124 PetriNetUnfolderBase]: 906/1782 cut-off events. [2024-06-27 22:07:19,036 INFO L125 PetriNetUnfolderBase]: For 70291/70312 co-relation queries the response was YES. [2024-06-27 22:07:19,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12640 conditions, 1782 events. 906/1782 cut-off events. For 70291/70312 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11002 event pairs, 240 based on Foata normal form. 15/1719 useless extension candidates. Maximal degree in co-relation 12550. Up to 1292 conditions per place. [2024-06-27 22:07:19,051 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 251 selfloop transitions, 38 changer transitions 0/341 dead transitions. [2024-06-27 22:07:19,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 341 transitions, 4986 flow [2024-06-27 22:07:19,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:07:19,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:07:19,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-27 22:07:19,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2024-06-27 22:07:19,053 INFO L175 Difference]: Start difference. First operand has 196 places, 313 transitions, 4031 flow. Second operand 7 states and 147 transitions. [2024-06-27 22:07:19,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 341 transitions, 4986 flow [2024-06-27 22:07:19,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 341 transitions, 4572 flow, removed 59 selfloop flow, removed 7 redundant places. [2024-06-27 22:07:19,169 INFO L231 Difference]: Finished difference. Result has 198 places, 324 transitions, 4020 flow [2024-06-27 22:07:19,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3617, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4020, PETRI_PLACES=198, PETRI_TRANSITIONS=324} [2024-06-27 22:07:19,170 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 156 predicate places. [2024-06-27 22:07:19,170 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 324 transitions, 4020 flow [2024-06-27 22:07:19,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:19,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:19,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:19,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:07:19,171 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:19,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:19,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1156722721, now seen corresponding path program 10 times [2024-06-27 22:07:19,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:19,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120627739] [2024-06-27 22:07:19,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:19,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:20,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:20,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:20,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120627739] [2024-06-27 22:07:20,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120627739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:20,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:20,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:20,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789506457] [2024-06-27 22:07:20,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:20,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:20,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:20,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:20,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:20,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:07:20,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 324 transitions, 4020 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 22:07:20,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:20,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:07:20,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:21,198 INFO L124 PetriNetUnfolderBase]: 1059/1963 cut-off events. [2024-06-27 22:07:21,198 INFO L125 PetriNetUnfolderBase]: For 72694/72694 co-relation queries the response was YES. [2024-06-27 22:07:21,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14188 conditions, 1963 events. 1059/1963 cut-off events. For 72694/72694 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11510 event pairs, 171 based on Foata normal form. 1/1897 useless extension candidates. Maximal degree in co-relation 14095. Up to 1529 conditions per place. [2024-06-27 22:07:21,214 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 254 selfloop transitions, 82 changer transitions 0/344 dead transitions. [2024-06-27 22:07:21,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 344 transitions, 4890 flow [2024-06-27 22:07:21,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:21,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:21,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 22:07:21,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48355263157894735 [2024-06-27 22:07:21,216 INFO L175 Difference]: Start difference. First operand has 198 places, 324 transitions, 4020 flow. Second operand 8 states and 147 transitions. [2024-06-27 22:07:21,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 344 transitions, 4890 flow [2024-06-27 22:07:21,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 344 transitions, 4663 flow, removed 107 selfloop flow, removed 1 redundant places. [2024-06-27 22:07:21,356 INFO L231 Difference]: Finished difference. Result has 205 places, 327 transitions, 4101 flow [2024-06-27 22:07:21,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3797, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4101, PETRI_PLACES=205, PETRI_TRANSITIONS=327} [2024-06-27 22:07:21,356 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 163 predicate places. [2024-06-27 22:07:21,356 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 327 transitions, 4101 flow [2024-06-27 22:07:21,356 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 22:07:21,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:21,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:21,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:07:21,357 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:21,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:21,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1146233995, now seen corresponding path program 1 times [2024-06-27 22:07:21,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:21,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854968372] [2024-06-27 22:07:21,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:21,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:24,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:24,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:24,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854968372] [2024-06-27 22:07:24,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854968372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:24,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:24,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:07:24,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337445549] [2024-06-27 22:07:24,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:24,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:07:24,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:24,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:07:24,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:07:24,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:07:24,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 327 transitions, 4101 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:24,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:24,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:07:24,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:25,197 INFO L124 PetriNetUnfolderBase]: 1060/1964 cut-off events. [2024-06-27 22:07:25,198 INFO L125 PetriNetUnfolderBase]: For 72499/72499 co-relation queries the response was YES. [2024-06-27 22:07:25,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14129 conditions, 1964 events. 1060/1964 cut-off events. For 72499/72499 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11534 event pairs, 330 based on Foata normal form. 2/1903 useless extension candidates. Maximal degree in co-relation 14033. Up to 1635 conditions per place. [2024-06-27 22:07:25,211 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 326 selfloop transitions, 19 changer transitions 0/353 dead transitions. [2024-06-27 22:07:25,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 353 transitions, 5019 flow [2024-06-27 22:07:25,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:07:25,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:07:25,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 22:07:25,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4394736842105263 [2024-06-27 22:07:25,213 INFO L175 Difference]: Start difference. First operand has 205 places, 327 transitions, 4101 flow. Second operand 10 states and 167 transitions. [2024-06-27 22:07:25,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 353 transitions, 5019 flow [2024-06-27 22:07:25,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 353 transitions, 4741 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-06-27 22:07:25,357 INFO L231 Difference]: Finished difference. Result has 209 places, 328 transitions, 3883 flow [2024-06-27 22:07:25,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3823, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3883, PETRI_PLACES=209, PETRI_TRANSITIONS=328} [2024-06-27 22:07:25,358 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 167 predicate places. [2024-06-27 22:07:25,358 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 328 transitions, 3883 flow [2024-06-27 22:07:25,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:25,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:25,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:25,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:07:25,358 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:25,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:25,359 INFO L85 PathProgramCache]: Analyzing trace with hash 668466103, now seen corresponding path program 1 times [2024-06-27 22:07:25,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:25,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610868990] [2024-06-27 22:07:25,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:25,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:26,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:26,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:26,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610868990] [2024-06-27 22:07:26,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610868990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:26,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:26,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:26,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832860679] [2024-06-27 22:07:26,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:26,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:26,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:26,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:26,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:26,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:07:26,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 328 transitions, 3883 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 22:07:26,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:26,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:07:26,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:27,143 INFO L124 PetriNetUnfolderBase]: 1080/2005 cut-off events. [2024-06-27 22:07:27,143 INFO L125 PetriNetUnfolderBase]: For 73991/73991 co-relation queries the response was YES. [2024-06-27 22:07:27,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14162 conditions, 2005 events. 1080/2005 cut-off events. For 73991/73991 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11814 event pairs, 234 based on Foata normal form. 1/1943 useless extension candidates. Maximal degree in co-relation 14065. Up to 1568 conditions per place. [2024-06-27 22:07:27,169 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 287 selfloop transitions, 76 changer transitions 0/371 dead transitions. [2024-06-27 22:07:27,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 371 transitions, 4999 flow [2024-06-27 22:07:27,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:07:27,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:07:27,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 22:07:27,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-27 22:07:27,170 INFO L175 Difference]: Start difference. First operand has 209 places, 328 transitions, 3883 flow. Second operand 10 states and 184 transitions. [2024-06-27 22:07:27,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 371 transitions, 4999 flow [2024-06-27 22:07:27,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 371 transitions, 4939 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 22:07:27,321 INFO L231 Difference]: Finished difference. Result has 213 places, 338 transitions, 4232 flow [2024-06-27 22:07:27,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3823, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4232, PETRI_PLACES=213, PETRI_TRANSITIONS=338} [2024-06-27 22:07:27,321 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 171 predicate places. [2024-06-27 22:07:27,322 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 338 transitions, 4232 flow [2024-06-27 22:07:27,322 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 22:07:27,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:27,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:27,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:07:27,322 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:27,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:27,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1447587913, now seen corresponding path program 2 times [2024-06-27 22:07:27,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:27,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986490712] [2024-06-27 22:07:27,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:27,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:28,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:28,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:28,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986490712] [2024-06-27 22:07:28,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986490712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:28,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:28,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:28,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816546250] [2024-06-27 22:07:28,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:28,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:28,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:28,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:28,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:28,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:07:28,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 338 transitions, 4232 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 22:07:28,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:28,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:07:28,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:29,195 INFO L124 PetriNetUnfolderBase]: 1105/2053 cut-off events. [2024-06-27 22:07:29,195 INFO L125 PetriNetUnfolderBase]: For 80863/80863 co-relation queries the response was YES. [2024-06-27 22:07:29,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14945 conditions, 2053 events. 1105/2053 cut-off events. For 80863/80863 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12203 event pairs, 240 based on Foata normal form. 1/1991 useless extension candidates. Maximal degree in co-relation 14845. Up to 1601 conditions per place. [2024-06-27 22:07:29,213 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 292 selfloop transitions, 83 changer transitions 0/383 dead transitions. [2024-06-27 22:07:29,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 383 transitions, 5598 flow [2024-06-27 22:07:29,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:07:29,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:07:29,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 22:07:29,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157894736842105 [2024-06-27 22:07:29,214 INFO L175 Difference]: Start difference. First operand has 213 places, 338 transitions, 4232 flow. Second operand 10 states and 183 transitions. [2024-06-27 22:07:29,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 383 transitions, 5598 flow [2024-06-27 22:07:29,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 383 transitions, 5162 flow, removed 178 selfloop flow, removed 5 redundant places. [2024-06-27 22:07:29,404 INFO L231 Difference]: Finished difference. Result has 219 places, 354 transitions, 4524 flow [2024-06-27 22:07:29,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3970, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4524, PETRI_PLACES=219, PETRI_TRANSITIONS=354} [2024-06-27 22:07:29,404 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 177 predicate places. [2024-06-27 22:07:29,404 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 354 transitions, 4524 flow [2024-06-27 22:07:29,404 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 22:07:29,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:29,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:29,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:07:29,405 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:29,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:29,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1894204480, now seen corresponding path program 1 times [2024-06-27 22:07:29,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:29,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093858822] [2024-06-27 22:07:29,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:29,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:30,761 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 22:07:30,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:30,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093858822] [2024-06-27 22:07:30,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093858822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:30,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:30,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:30,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114248989] [2024-06-27 22:07:30,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:30,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:30,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:30,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:30,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:30,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:07:30,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 354 transitions, 4524 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 22:07:30,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:30,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:07:30,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:31,450 INFO L124 PetriNetUnfolderBase]: 1121/2076 cut-off events. [2024-06-27 22:07:31,450 INFO L125 PetriNetUnfolderBase]: For 87196/87196 co-relation queries the response was YES. [2024-06-27 22:07:31,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15343 conditions, 2076 events. 1121/2076 cut-off events. For 87196/87196 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12317 event pairs, 225 based on Foata normal form. 2/2015 useless extension candidates. Maximal degree in co-relation 15240. Up to 1576 conditions per place. [2024-06-27 22:07:31,471 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 281 selfloop transitions, 98 changer transitions 0/387 dead transitions. [2024-06-27 22:07:31,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 387 transitions, 5532 flow [2024-06-27 22:07:31,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:07:31,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:07:31,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 22:07:31,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-27 22:07:31,473 INFO L175 Difference]: Start difference. First operand has 219 places, 354 transitions, 4524 flow. Second operand 10 states and 184 transitions. [2024-06-27 22:07:31,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 387 transitions, 5532 flow [2024-06-27 22:07:31,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 387 transitions, 5250 flow, removed 120 selfloop flow, removed 4 redundant places. [2024-06-27 22:07:31,668 INFO L231 Difference]: Finished difference. Result has 225 places, 358 transitions, 4593 flow [2024-06-27 22:07:31,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4244, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4593, PETRI_PLACES=225, PETRI_TRANSITIONS=358} [2024-06-27 22:07:31,669 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 183 predicate places. [2024-06-27 22:07:31,669 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 358 transitions, 4593 flow [2024-06-27 22:07:31,670 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 22:07:31,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:31,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:31,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:07:31,670 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:31,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:31,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1451335813, now seen corresponding path program 3 times [2024-06-27 22:07:31,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:31,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135432995] [2024-06-27 22:07:31,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:31,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:32,844 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 22:07:32,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:32,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135432995] [2024-06-27 22:07:32,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135432995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:32,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:32,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:32,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916984192] [2024-06-27 22:07:32,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:32,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:32,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:32,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:32,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:32,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:07:32,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 358 transitions, 4593 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 22:07:32,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:32,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:07:32,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:33,553 INFO L124 PetriNetUnfolderBase]: 1129/2093 cut-off events. [2024-06-27 22:07:33,553 INFO L125 PetriNetUnfolderBase]: For 85399/85399 co-relation queries the response was YES. [2024-06-27 22:07:33,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15706 conditions, 2093 events. 1129/2093 cut-off events. For 85399/85399 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12454 event pairs, 234 based on Foata normal form. 1/2031 useless extension candidates. Maximal degree in co-relation 15601. Up to 1601 conditions per place. [2024-06-27 22:07:33,570 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 285 selfloop transitions, 97 changer transitions 0/390 dead transitions. [2024-06-27 22:07:33,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 390 transitions, 5601 flow [2024-06-27 22:07:33,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:07:33,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:07:33,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 22:07:33,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157894736842105 [2024-06-27 22:07:33,572 INFO L175 Difference]: Start difference. First operand has 225 places, 358 transitions, 4593 flow. Second operand 10 states and 183 transitions. [2024-06-27 22:07:33,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 390 transitions, 5601 flow [2024-06-27 22:07:33,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 390 transitions, 5292 flow, removed 62 selfloop flow, removed 8 redundant places. [2024-06-27 22:07:33,766 INFO L231 Difference]: Finished difference. Result has 227 places, 361 transitions, 4621 flow [2024-06-27 22:07:33,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4284, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4621, PETRI_PLACES=227, PETRI_TRANSITIONS=361} [2024-06-27 22:07:33,767 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 185 predicate places. [2024-06-27 22:07:33,767 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 361 transitions, 4621 flow [2024-06-27 22:07:33,767 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 22:07:33,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:33,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:33,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:07:33,768 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:33,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:33,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1901679493, now seen corresponding path program 4 times [2024-06-27 22:07:33,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:33,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040739949] [2024-06-27 22:07:33,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:33,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:34,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:34,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:34,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040739949] [2024-06-27 22:07:34,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040739949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:34,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:34,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:34,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682762666] [2024-06-27 22:07:34,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:34,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:34,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:34,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:34,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:34,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:07:34,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 361 transitions, 4621 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 22:07:34,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:34,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:07:34,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:35,663 INFO L124 PetriNetUnfolderBase]: 1186/2227 cut-off events. [2024-06-27 22:07:35,664 INFO L125 PetriNetUnfolderBase]: For 90224/90224 co-relation queries the response was YES. [2024-06-27 22:07:35,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16317 conditions, 2227 events. 1186/2227 cut-off events. For 90224/90224 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 13613 event pairs, 245 based on Foata normal form. 1/2156 useless extension candidates. Maximal degree in co-relation 16211. Up to 1659 conditions per place. [2024-06-27 22:07:35,688 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 331 selfloop transitions, 89 changer transitions 0/428 dead transitions. [2024-06-27 22:07:35,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 428 transitions, 5989 flow [2024-06-27 22:07:35,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:07:35,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:07:35,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-27 22:07:35,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:07:35,689 INFO L175 Difference]: Start difference. First operand has 227 places, 361 transitions, 4621 flow. Second operand 10 states and 190 transitions. [2024-06-27 22:07:35,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 428 transitions, 5989 flow [2024-06-27 22:07:35,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 428 transitions, 5648 flow, removed 61 selfloop flow, removed 8 redundant places. [2024-06-27 22:07:35,885 INFO L231 Difference]: Finished difference. Result has 232 places, 390 transitions, 4956 flow [2024-06-27 22:07:35,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4312, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4956, PETRI_PLACES=232, PETRI_TRANSITIONS=390} [2024-06-27 22:07:35,886 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 190 predicate places. [2024-06-27 22:07:35,886 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 390 transitions, 4956 flow [2024-06-27 22:07:35,887 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 22:07:35,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:35,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:35,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:07:35,887 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:35,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:35,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1901537203, now seen corresponding path program 5 times [2024-06-27 22:07:35,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:35,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807085914] [2024-06-27 22:07:35,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:35,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:36,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:36,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807085914] [2024-06-27 22:07:36,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807085914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:36,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:36,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:36,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604313787] [2024-06-27 22:07:36,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:36,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:36,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:36,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:36,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:37,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:07:37,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 390 transitions, 4956 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 22:07:37,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:37,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:07:37,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:37,812 INFO L124 PetriNetUnfolderBase]: 1198/2243 cut-off events. [2024-06-27 22:07:37,812 INFO L125 PetriNetUnfolderBase]: For 96011/96011 co-relation queries the response was YES. [2024-06-27 22:07:37,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16695 conditions, 2243 events. 1198/2243 cut-off events. For 96011/96011 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 13746 event pairs, 247 based on Foata normal form. 1/2176 useless extension candidates. Maximal degree in co-relation 16585. Up to 1706 conditions per place. [2024-06-27 22:07:37,833 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 314 selfloop transitions, 106 changer transitions 0/428 dead transitions. [2024-06-27 22:07:37,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 428 transitions, 6141 flow [2024-06-27 22:07:37,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:37,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:37,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-27 22:07:37,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2024-06-27 22:07:37,834 INFO L175 Difference]: Start difference. First operand has 232 places, 390 transitions, 4956 flow. Second operand 9 states and 174 transitions. [2024-06-27 22:07:37,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 428 transitions, 6141 flow [2024-06-27 22:07:38,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 428 transitions, 5895 flow, removed 83 selfloop flow, removed 4 redundant places. [2024-06-27 22:07:38,108 INFO L231 Difference]: Finished difference. Result has 238 places, 401 transitions, 5219 flow [2024-06-27 22:07:38,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4762, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5219, PETRI_PLACES=238, PETRI_TRANSITIONS=401} [2024-06-27 22:07:38,108 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 196 predicate places. [2024-06-27 22:07:38,108 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 401 transitions, 5219 flow [2024-06-27 22:07:38,109 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 22:07:38,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:38,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:38,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:07:38,109 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:38,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:38,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1458600646, now seen corresponding path program 2 times [2024-06-27 22:07:38,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:38,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019835894] [2024-06-27 22:07:38,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:38,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:39,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:39,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:39,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019835894] [2024-06-27 22:07:39,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019835894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:39,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:39,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:39,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065647008] [2024-06-27 22:07:39,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:39,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:39,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:39,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:39,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:39,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:07:39,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 401 transitions, 5219 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 22:07:39,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:39,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:07:39,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:39,982 INFO L124 PetriNetUnfolderBase]: 1222/2275 cut-off events. [2024-06-27 22:07:39,983 INFO L125 PetriNetUnfolderBase]: For 102164/102164 co-relation queries the response was YES. [2024-06-27 22:07:39,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17155 conditions, 2275 events. 1222/2275 cut-off events. For 102164/102164 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 13944 event pairs, 250 based on Foata normal form. 2/2209 useless extension candidates. Maximal degree in co-relation 17044. Up to 1730 conditions per place. [2024-06-27 22:07:40,003 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 319 selfloop transitions, 109 changer transitions 0/436 dead transitions. [2024-06-27 22:07:40,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 436 transitions, 6347 flow [2024-06-27 22:07:40,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:07:40,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:07:40,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 22:07:40,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-27 22:07:40,005 INFO L175 Difference]: Start difference. First operand has 238 places, 401 transitions, 5219 flow. Second operand 10 states and 185 transitions. [2024-06-27 22:07:40,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 436 transitions, 6347 flow [2024-06-27 22:07:40,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 436 transitions, 6124 flow, removed 64 selfloop flow, removed 3 redundant places. [2024-06-27 22:07:40,203 INFO L231 Difference]: Finished difference. Result has 245 places, 409 transitions, 5415 flow [2024-06-27 22:07:40,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4996, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5415, PETRI_PLACES=245, PETRI_TRANSITIONS=409} [2024-06-27 22:07:40,204 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 203 predicate places. [2024-06-27 22:07:40,204 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 409 transitions, 5415 flow [2024-06-27 22:07:40,205 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 22:07:40,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:40,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:40,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 22:07:40,205 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:40,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:40,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1314776146, now seen corresponding path program 3 times [2024-06-27 22:07:40,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:40,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255794715] [2024-06-27 22:07:40,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:40,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:41,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:41,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:41,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255794715] [2024-06-27 22:07:41,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255794715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:41,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:41,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:07:41,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275664690] [2024-06-27 22:07:41,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:41,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:07:41,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:41,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:07:41,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:07:41,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:07:41,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 409 transitions, 5415 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:41,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:41,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:07:41,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:42,482 INFO L124 PetriNetUnfolderBase]: 1230/2284 cut-off events. [2024-06-27 22:07:42,482 INFO L125 PetriNetUnfolderBase]: For 105641/105641 co-relation queries the response was YES. [2024-06-27 22:07:42,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17494 conditions, 2284 events. 1230/2284 cut-off events. For 105641/105641 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 13936 event pairs, 236 based on Foata normal form. 1/2216 useless extension candidates. Maximal degree in co-relation 17381. Up to 1701 conditions per place. [2024-06-27 22:07:42,503 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 294 selfloop transitions, 137 changer transitions 0/439 dead transitions. [2024-06-27 22:07:42,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 439 transitions, 6529 flow [2024-06-27 22:07:42,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:07:42,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:07:42,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 22:07:42,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157894736842105 [2024-06-27 22:07:42,504 INFO L175 Difference]: Start difference. First operand has 245 places, 409 transitions, 5415 flow. Second operand 10 states and 183 transitions. [2024-06-27 22:07:42,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 439 transitions, 6529 flow [2024-06-27 22:07:42,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 439 transitions, 6190 flow, removed 68 selfloop flow, removed 8 redundant places. [2024-06-27 22:07:42,710 INFO L231 Difference]: Finished difference. Result has 247 places, 412 transitions, 5506 flow [2024-06-27 22:07:42,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5076, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5506, PETRI_PLACES=247, PETRI_TRANSITIONS=412} [2024-06-27 22:07:42,710 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 205 predicate places. [2024-06-27 22:07:42,710 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 412 transitions, 5506 flow [2024-06-27 22:07:42,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:42,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:42,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:42,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 22:07:42,711 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:42,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:42,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1756722253, now seen corresponding path program 6 times [2024-06-27 22:07:42,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:42,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757390681] [2024-06-27 22:07:42,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:42,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:43,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:43,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:43,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757390681] [2024-06-27 22:07:43,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757390681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:43,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:43,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:44,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450361718] [2024-06-27 22:07:44,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:44,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:44,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:44,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:44,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:44,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:07:44,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 412 transitions, 5506 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 22:07:44,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:44,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:07:44,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:44,892 INFO L124 PetriNetUnfolderBase]: 1238/2301 cut-off events. [2024-06-27 22:07:44,893 INFO L125 PetriNetUnfolderBase]: For 109018/109018 co-relation queries the response was YES. [2024-06-27 22:07:44,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17666 conditions, 2301 events. 1238/2301 cut-off events. For 109018/109018 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 14064 event pairs, 233 based on Foata normal form. 1/2233 useless extension candidates. Maximal degree in co-relation 17552. Up to 1688 conditions per place. [2024-06-27 22:07:44,918 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 296 selfloop transitions, 138 changer transitions 0/442 dead transitions. [2024-06-27 22:07:44,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 442 transitions, 6636 flow [2024-06-27 22:07:44,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:07:44,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:07:44,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-27 22:07:44,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058479532163743 [2024-06-27 22:07:44,919 INFO L175 Difference]: Start difference. First operand has 247 places, 412 transitions, 5506 flow. Second operand 9 states and 173 transitions. [2024-06-27 22:07:44,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 442 transitions, 6636 flow [2024-06-27 22:07:45,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 442 transitions, 6232 flow, removed 68 selfloop flow, removed 8 redundant places. [2024-06-27 22:07:45,138 INFO L231 Difference]: Finished difference. Result has 248 places, 415 transitions, 5544 flow [2024-06-27 22:07:45,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5102, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5544, PETRI_PLACES=248, PETRI_TRANSITIONS=415} [2024-06-27 22:07:45,138 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 206 predicate places. [2024-06-27 22:07:45,139 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 415 transitions, 5544 flow [2024-06-27 22:07:45,139 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 22:07:45,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:45,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:45,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 22:07:45,139 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:45,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:45,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1756514367, now seen corresponding path program 1 times [2024-06-27 22:07:45,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:45,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152388198] [2024-06-27 22:07:45,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:45,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:46,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:46,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:46,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152388198] [2024-06-27 22:07:46,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152388198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:46,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:46,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:07:46,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830174226] [2024-06-27 22:07:46,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:46,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:07:46,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:46,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:07:46,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:07:46,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:07:46,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 415 transitions, 5544 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:46,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:46,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:07:46,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:47,060 INFO L124 PetriNetUnfolderBase]: 1162/2217 cut-off events. [2024-06-27 22:07:47,060 INFO L125 PetriNetUnfolderBase]: For 115883/115883 co-relation queries the response was YES. [2024-06-27 22:07:47,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17032 conditions, 2217 events. 1162/2217 cut-off events. For 115883/115883 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 14020 event pairs, 287 based on Foata normal form. 2/2139 useless extension candidates. Maximal degree in co-relation 16919. Up to 1688 conditions per place. [2024-06-27 22:07:47,081 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 360 selfloop transitions, 68 changer transitions 0/447 dead transitions. [2024-06-27 22:07:47,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 447 transitions, 6807 flow [2024-06-27 22:07:47,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:07:47,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:07:47,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-27 22:07:47,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5328947368421053 [2024-06-27 22:07:47,082 INFO L175 Difference]: Start difference. First operand has 248 places, 415 transitions, 5544 flow. Second operand 8 states and 162 transitions. [2024-06-27 22:07:47,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 447 transitions, 6807 flow [2024-06-27 22:07:47,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 447 transitions, 6391 flow, removed 73 selfloop flow, removed 7 redundant places. [2024-06-27 22:07:47,293 INFO L231 Difference]: Finished difference. Result has 251 places, 423 transitions, 5590 flow [2024-06-27 22:07:47,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5128, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5590, PETRI_PLACES=251, PETRI_TRANSITIONS=423} [2024-06-27 22:07:47,294 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 209 predicate places. [2024-06-27 22:07:47,294 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 423 transitions, 5590 flow [2024-06-27 22:07:47,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:47,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:47,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:47,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 22:07:47,295 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:47,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:47,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1756484886, now seen corresponding path program 4 times [2024-06-27 22:07:47,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:47,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407053279] [2024-06-27 22:07:47,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:47,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:48,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:48,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:48,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407053279] [2024-06-27 22:07:48,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407053279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:48,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:48,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:07:48,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247084454] [2024-06-27 22:07:48,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:48,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:07:48,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:48,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:07:48,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:07:48,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:07:48,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 423 transitions, 5590 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:48,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:48,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:07:48,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:49,632 INFO L124 PetriNetUnfolderBase]: 1277/2357 cut-off events. [2024-06-27 22:07:49,633 INFO L125 PetriNetUnfolderBase]: For 118520/118520 co-relation queries the response was YES. [2024-06-27 22:07:49,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18470 conditions, 2357 events. 1277/2357 cut-off events. For 118520/118520 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14391 event pairs, 224 based on Foata normal form. 1/2288 useless extension candidates. Maximal degree in co-relation 18353. Up to 1700 conditions per place. [2024-06-27 22:07:49,658 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 289 selfloop transitions, 158 changer transitions 0/455 dead transitions. [2024-06-27 22:07:49,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 455 transitions, 6770 flow [2024-06-27 22:07:49,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:07:49,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:07:49,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 22:07:49,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-27 22:07:49,660 INFO L175 Difference]: Start difference. First operand has 251 places, 423 transitions, 5590 flow. Second operand 10 states and 185 transitions. [2024-06-27 22:07:49,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 455 transitions, 6770 flow [2024-06-27 22:07:49,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 455 transitions, 6580 flow, removed 75 selfloop flow, removed 3 redundant places. [2024-06-27 22:07:49,962 INFO L231 Difference]: Finished difference. Result has 259 places, 428 transitions, 5953 flow [2024-06-27 22:07:49,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5400, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5953, PETRI_PLACES=259, PETRI_TRANSITIONS=428} [2024-06-27 22:07:49,963 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 217 predicate places. [2024-06-27 22:07:49,963 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 428 transitions, 5953 flow [2024-06-27 22:07:49,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:49,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:49,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:49,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 22:07:49,964 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:49,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:49,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1358342149, now seen corresponding path program 7 times [2024-06-27 22:07:49,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:49,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684502307] [2024-06-27 22:07:49,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:49,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:50,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:50,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:50,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684502307] [2024-06-27 22:07:50,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684502307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:50,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:50,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:50,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965405449] [2024-06-27 22:07:50,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:50,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:50,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:50,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:50,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:51,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:07:51,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 428 transitions, 5953 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 22:07:51,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:51,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:07:51,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:51,968 INFO L124 PetriNetUnfolderBase]: 1318/2439 cut-off events. [2024-06-27 22:07:51,968 INFO L125 PetriNetUnfolderBase]: For 124122/124122 co-relation queries the response was YES. [2024-06-27 22:07:51,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19429 conditions, 2439 events. 1318/2439 cut-off events. For 124122/124122 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 15040 event pairs, 223 based on Foata normal form. 1/2370 useless extension candidates. Maximal degree in co-relation 19308. Up to 1909 conditions per place. [2024-06-27 22:07:51,997 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 364 selfloop transitions, 106 changer transitions 0/478 dead transitions. [2024-06-27 22:07:51,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 478 transitions, 7437 flow [2024-06-27 22:07:51,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:07:51,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:07:51,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 22:07:51,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157894736842105 [2024-06-27 22:07:51,998 INFO L175 Difference]: Start difference. First operand has 259 places, 428 transitions, 5953 flow. Second operand 10 states and 183 transitions. [2024-06-27 22:07:51,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 478 transitions, 7437 flow [2024-06-27 22:07:52,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 478 transitions, 6975 flow, removed 77 selfloop flow, removed 7 redundant places. [2024-06-27 22:07:52,302 INFO L231 Difference]: Finished difference. Result has 263 places, 453 transitions, 6224 flow [2024-06-27 22:07:52,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5532, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6224, PETRI_PLACES=263, PETRI_TRANSITIONS=453} [2024-06-27 22:07:52,303 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 221 predicate places. [2024-06-27 22:07:52,303 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 453 transitions, 6224 flow [2024-06-27 22:07:52,304 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 22:07:52,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:52,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:52,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 22:07:52,304 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:52,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:52,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1052215279, now seen corresponding path program 8 times [2024-06-27 22:07:52,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:52,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656593185] [2024-06-27 22:07:52,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:52,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:53,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:53,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:53,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656593185] [2024-06-27 22:07:53,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656593185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:53,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:53,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:07:53,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117554340] [2024-06-27 22:07:53,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:53,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:07:53,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:53,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:07:53,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:07:53,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:07:53,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 453 transitions, 6224 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 22:07:53,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:53,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:07:53,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:54,310 INFO L124 PetriNetUnfolderBase]: 1334/2471 cut-off events. [2024-06-27 22:07:54,311 INFO L125 PetriNetUnfolderBase]: For 129333/129333 co-relation queries the response was YES. [2024-06-27 22:07:54,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19652 conditions, 2471 events. 1334/2471 cut-off events. For 129333/129333 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 15314 event pairs, 223 based on Foata normal form. 1/2402 useless extension candidates. Maximal degree in co-relation 19529. Up to 1902 conditions per place. [2024-06-27 22:07:54,336 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 356 selfloop transitions, 123 changer transitions 0/487 dead transitions. [2024-06-27 22:07:54,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 487 transitions, 7478 flow [2024-06-27 22:07:54,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:07:54,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:07:54,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 22:07:54,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-27 22:07:54,337 INFO L175 Difference]: Start difference. First operand has 263 places, 453 transitions, 6224 flow. Second operand 10 states and 184 transitions. [2024-06-27 22:07:54,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 487 transitions, 7478 flow [2024-06-27 22:07:54,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 487 transitions, 7207 flow, removed 78 selfloop flow, removed 5 redundant places. [2024-06-27 22:07:54,604 INFO L231 Difference]: Finished difference. Result has 268 places, 462 transitions, 6436 flow [2024-06-27 22:07:54,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5953, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6436, PETRI_PLACES=268, PETRI_TRANSITIONS=462} [2024-06-27 22:07:54,605 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 226 predicate places. [2024-06-27 22:07:54,605 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 462 transitions, 6436 flow [2024-06-27 22:07:54,605 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 22:07:54,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:54,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:54,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 22:07:54,605 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:54,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:54,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1358463266, now seen corresponding path program 5 times [2024-06-27 22:07:54,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:54,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052493604] [2024-06-27 22:07:54,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:54,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:55,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:55,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:55,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052493604] [2024-06-27 22:07:55,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052493604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:55,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:55,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:07:55,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721311157] [2024-06-27 22:07:55,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:55,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:07:55,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:55,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:07:55,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:07:55,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:07:55,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 462 transitions, 6436 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:55,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:55,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:07:55,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:56,678 INFO L124 PetriNetUnfolderBase]: 1372/2534 cut-off events. [2024-06-27 22:07:56,678 INFO L125 PetriNetUnfolderBase]: For 138389/138389 co-relation queries the response was YES. [2024-06-27 22:07:56,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20397 conditions, 2534 events. 1372/2534 cut-off events. For 138389/138389 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 15786 event pairs, 224 based on Foata normal form. 2/2464 useless extension candidates. Maximal degree in co-relation 20273. Up to 1937 conditions per place. [2024-06-27 22:07:56,707 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 369 selfloop transitions, 123 changer transitions 0/500 dead transitions. [2024-06-27 22:07:56,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 500 transitions, 7764 flow [2024-06-27 22:07:56,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:07:56,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:07:56,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 22:07:56,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48947368421052634 [2024-06-27 22:07:56,708 INFO L175 Difference]: Start difference. First operand has 268 places, 462 transitions, 6436 flow. Second operand 10 states and 186 transitions. [2024-06-27 22:07:56,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 500 transitions, 7764 flow [2024-06-27 22:07:57,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 500 transitions, 7381 flow, removed 75 selfloop flow, removed 8 redundant places. [2024-06-27 22:07:57,033 INFO L231 Difference]: Finished difference. Result has 270 places, 471 transitions, 6482 flow [2024-06-27 22:07:57,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6053, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6482, PETRI_PLACES=270, PETRI_TRANSITIONS=471} [2024-06-27 22:07:57,034 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 228 predicate places. [2024-06-27 22:07:57,034 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 471 transitions, 6482 flow [2024-06-27 22:07:57,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:57,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:57,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:57,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 22:07:57,035 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:57,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:57,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1363141166, now seen corresponding path program 6 times [2024-06-27 22:07:57,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:57,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060214442] [2024-06-27 22:07:57,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:57,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:07:58,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:07:58,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:07:58,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060214442] [2024-06-27 22:07:58,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060214442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:07:58,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:07:58,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:07:58,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174335909] [2024-06-27 22:07:58,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:07:58,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:07:58,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:07:58,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:07:58,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:07:58,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:07:58,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 471 transitions, 6482 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:58,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:07:58,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:07:58,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:07:59,578 INFO L124 PetriNetUnfolderBase]: 1398/2572 cut-off events. [2024-06-27 22:07:59,578 INFO L125 PetriNetUnfolderBase]: For 143276/143276 co-relation queries the response was YES. [2024-06-27 22:07:59,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21045 conditions, 2572 events. 1398/2572 cut-off events. For 143276/143276 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 16020 event pairs, 219 based on Foata normal form. 1/2501 useless extension candidates. Maximal degree in co-relation 20920. Up to 1920 conditions per place. [2024-06-27 22:07:59,608 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 348 selfloop transitions, 158 changer transitions 0/514 dead transitions. [2024-06-27 22:07:59,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 514 transitions, 8203 flow [2024-06-27 22:07:59,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:07:59,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:07:59,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 22:07:59,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49473684210526314 [2024-06-27 22:07:59,610 INFO L175 Difference]: Start difference. First operand has 270 places, 471 transitions, 6482 flow. Second operand 10 states and 188 transitions. [2024-06-27 22:07:59,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 514 transitions, 8203 flow [2024-06-27 22:07:59,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 514 transitions, 7919 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 22:07:59,934 INFO L231 Difference]: Finished difference. Result has 273 places, 488 transitions, 7078 flow [2024-06-27 22:07:59,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6227, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7078, PETRI_PLACES=273, PETRI_TRANSITIONS=488} [2024-06-27 22:07:59,934 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 231 predicate places. [2024-06-27 22:07:59,935 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 488 transitions, 7078 flow [2024-06-27 22:07:59,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:07:59,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:07:59,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:07:59,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 22:07:59,935 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:07:59,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:07:59,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1363133509, now seen corresponding path program 9 times [2024-06-27 22:07:59,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:07:59,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286234774] [2024-06-27 22:07:59,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:07:59,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:07:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:01,126 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 22:08:01,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:01,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286234774] [2024-06-27 22:08:01,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286234774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:01,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:01,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:01,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143463744] [2024-06-27 22:08:01,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:01,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:01,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:01,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:01,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:01,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:08:01,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 488 transitions, 7078 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 22:08:01,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:01,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:08:01,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:02,106 INFO L124 PetriNetUnfolderBase]: 1410/2600 cut-off events. [2024-06-27 22:08:02,106 INFO L125 PetriNetUnfolderBase]: For 150501/150501 co-relation queries the response was YES. [2024-06-27 22:08:02,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21534 conditions, 2600 events. 1410/2600 cut-off events. For 150501/150501 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 16268 event pairs, 222 based on Foata normal form. 1/2529 useless extension candidates. Maximal degree in co-relation 21407. Up to 1979 conditions per place. [2024-06-27 22:08:02,137 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 371 selfloop transitions, 140 changer transitions 0/519 dead transitions. [2024-06-27 22:08:02,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 519 transitions, 8388 flow [2024-06-27 22:08:02,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:08:02,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:08:02,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 22:08:02,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-27 22:08:02,139 INFO L175 Difference]: Start difference. First operand has 273 places, 488 transitions, 7078 flow. Second operand 10 states and 185 transitions. [2024-06-27 22:08:02,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 519 transitions, 8388 flow [2024-06-27 22:08:02,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 519 transitions, 8066 flow, removed 86 selfloop flow, removed 6 redundant places. [2024-06-27 22:08:02,483 INFO L231 Difference]: Finished difference. Result has 277 places, 494 transitions, 7249 flow [2024-06-27 22:08:02,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6756, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7249, PETRI_PLACES=277, PETRI_TRANSITIONS=494} [2024-06-27 22:08:02,484 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 235 predicate places. [2024-06-27 22:08:02,484 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 494 transitions, 7249 flow [2024-06-27 22:08:02,484 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 22:08:02,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:02,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:02,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 22:08:02,485 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:02,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:02,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1806032866, now seen corresponding path program 7 times [2024-06-27 22:08:02,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:02,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049653600] [2024-06-27 22:08:02,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:02,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:03,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:03,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:03,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049653600] [2024-06-27 22:08:03,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049653600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:03,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:03,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:08:03,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218822112] [2024-06-27 22:08:03,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:03,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:08:03,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:03,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:08:03,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:08:03,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:08:03,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 494 transitions, 7249 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:03,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:03,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:08:03,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:04,752 INFO L124 PetriNetUnfolderBase]: 1408/2591 cut-off events. [2024-06-27 22:08:04,752 INFO L125 PetriNetUnfolderBase]: For 151161/151161 co-relation queries the response was YES. [2024-06-27 22:08:04,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21621 conditions, 2591 events. 1408/2591 cut-off events. For 151161/151161 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 16108 event pairs, 225 based on Foata normal form. 1/2520 useless extension candidates. Maximal degree in co-relation 21492. Up to 1991 conditions per place. [2024-06-27 22:08:04,779 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 377 selfloop transitions, 135 changer transitions 0/520 dead transitions. [2024-06-27 22:08:04,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 520 transitions, 8448 flow [2024-06-27 22:08:04,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:08:04,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:08:04,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 22:08:04,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-27 22:08:04,780 INFO L175 Difference]: Start difference. First operand has 277 places, 494 transitions, 7249 flow. Second operand 10 states and 185 transitions. [2024-06-27 22:08:04,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 520 transitions, 8448 flow [2024-06-27 22:08:05,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 520 transitions, 7805 flow, removed 186 selfloop flow, removed 8 redundant places. [2024-06-27 22:08:05,122 INFO L231 Difference]: Finished difference. Result has 279 places, 495 transitions, 6966 flow [2024-06-27 22:08:05,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6666, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6966, PETRI_PLACES=279, PETRI_TRANSITIONS=495} [2024-06-27 22:08:05,123 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 237 predicate places. [2024-06-27 22:08:05,123 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 495 transitions, 6966 flow [2024-06-27 22:08:05,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:05,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:05,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:05,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 22:08:05,123 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:05,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:05,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1044863412, now seen corresponding path program 8 times [2024-06-27 22:08:05,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:05,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771627436] [2024-06-27 22:08:05,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:05,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:06,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:06,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:06,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771627436] [2024-06-27 22:08:06,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771627436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:06,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:06,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:06,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063513878] [2024-06-27 22:08:06,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:06,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:06,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:06,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:06,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:06,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:08:06,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 495 transitions, 6966 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 22:08:06,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:06,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:08:06,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:07,387 INFO L124 PetriNetUnfolderBase]: 1416/2599 cut-off events. [2024-06-27 22:08:07,387 INFO L125 PetriNetUnfolderBase]: For 148735/148735 co-relation queries the response was YES. [2024-06-27 22:08:07,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21407 conditions, 2599 events. 1416/2599 cut-off events. For 148735/148735 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 16162 event pairs, 209 based on Foata normal form. 1/2527 useless extension candidates. Maximal degree in co-relation 21277. Up to 1903 conditions per place. [2024-06-27 22:08:07,417 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 327 selfloop transitions, 188 changer transitions 0/523 dead transitions. [2024-06-27 22:08:07,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 523 transitions, 8274 flow [2024-06-27 22:08:07,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:08:07,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:08:07,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 22:08:07,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157894736842105 [2024-06-27 22:08:07,418 INFO L175 Difference]: Start difference. First operand has 279 places, 495 transitions, 6966 flow. Second operand 10 states and 183 transitions. [2024-06-27 22:08:07,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 523 transitions, 8274 flow [2024-06-27 22:08:07,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 523 transitions, 7935 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-27 22:08:07,863 INFO L231 Difference]: Finished difference. Result has 281 places, 498 transitions, 7190 flow [2024-06-27 22:08:07,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6627, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7190, PETRI_PLACES=281, PETRI_TRANSITIONS=498} [2024-06-27 22:08:07,863 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 239 predicate places. [2024-06-27 22:08:07,863 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 498 transitions, 7190 flow [2024-06-27 22:08:07,864 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 22:08:07,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:07,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:07,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 22:08:07,864 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:07,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:07,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1979416269, now seen corresponding path program 10 times [2024-06-27 22:08:07,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:07,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425332294] [2024-06-27 22:08:07,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:07,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:08,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:08,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:08,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425332294] [2024-06-27 22:08:08,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425332294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:08,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:08,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:08,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324840450] [2024-06-27 22:08:08,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:08,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:08,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:08,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:08,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:09,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:08:09,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 498 transitions, 7190 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 22:08:09,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:09,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:08:09,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:09,952 INFO L124 PetriNetUnfolderBase]: 1424/2621 cut-off events. [2024-06-27 22:08:09,952 INFO L125 PetriNetUnfolderBase]: For 156246/156246 co-relation queries the response was YES. [2024-06-27 22:08:09,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21843 conditions, 2621 events. 1424/2621 cut-off events. For 156246/156246 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 16396 event pairs, 209 based on Foata normal form. 1/2549 useless extension candidates. Maximal degree in co-relation 21712. Up to 1858 conditions per place. [2024-06-27 22:08:09,983 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 317 selfloop transitions, 201 changer transitions 0/526 dead transitions. [2024-06-27 22:08:09,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 526 transitions, 8516 flow [2024-06-27 22:08:09,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:08:09,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:08:09,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 22:08:09,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157894736842105 [2024-06-27 22:08:09,984 INFO L175 Difference]: Start difference. First operand has 281 places, 498 transitions, 7190 flow. Second operand 10 states and 183 transitions. [2024-06-27 22:08:09,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 526 transitions, 8516 flow [2024-06-27 22:08:10,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 526 transitions, 7977 flow, removed 84 selfloop flow, removed 8 redundant places. [2024-06-27 22:08:10,371 INFO L231 Difference]: Finished difference. Result has 283 places, 501 transitions, 7252 flow [2024-06-27 22:08:10,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6651, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7252, PETRI_PLACES=283, PETRI_TRANSITIONS=501} [2024-06-27 22:08:10,372 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 241 predicate places. [2024-06-27 22:08:10,372 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 501 transitions, 7252 flow [2024-06-27 22:08:10,373 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 22:08:10,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:10,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:10,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 22:08:10,373 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:10,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:10,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1536525065, now seen corresponding path program 2 times [2024-06-27 22:08:10,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:10,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008215726] [2024-06-27 22:08:10,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:10,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:11,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:11,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:11,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008215726] [2024-06-27 22:08:11,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008215726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:11,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:11,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:11,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956711254] [2024-06-27 22:08:11,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:11,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:11,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:11,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:11,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:11,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:08:11,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 501 transitions, 7252 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 22:08:11,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:11,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:08:11,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:12,536 INFO L124 PetriNetUnfolderBase]: 1340/2534 cut-off events. [2024-06-27 22:08:12,537 INFO L125 PetriNetUnfolderBase]: For 161158/161158 co-relation queries the response was YES. [2024-06-27 22:08:12,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20985 conditions, 2534 events. 1340/2534 cut-off events. For 161158/161158 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 16406 event pairs, 279 based on Foata normal form. 1/2450 useless extension candidates. Maximal degree in co-relation 20853. Up to 1952 conditions per place. [2024-06-27 22:08:12,565 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 437 selfloop transitions, 74 changer transitions 0/530 dead transitions. [2024-06-27 22:08:12,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 530 transitions, 8698 flow [2024-06-27 22:08:12,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:08:12,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:08:12,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-27 22:08:12,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-06-27 22:08:12,566 INFO L175 Difference]: Start difference. First operand has 283 places, 501 transitions, 7252 flow. Second operand 8 states and 154 transitions. [2024-06-27 22:08:12,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 530 transitions, 8698 flow [2024-06-27 22:08:12,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 530 transitions, 8121 flow, removed 90 selfloop flow, removed 8 redundant places. [2024-06-27 22:08:12,926 INFO L231 Difference]: Finished difference. Result has 285 places, 509 transitions, 7157 flow [2024-06-27 22:08:12,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6675, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7157, PETRI_PLACES=285, PETRI_TRANSITIONS=509} [2024-06-27 22:08:12,926 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 243 predicate places. [2024-06-27 22:08:12,926 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 509 transitions, 7157 flow [2024-06-27 22:08:12,927 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 22:08:12,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:12,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:12,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 22:08:12,927 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:12,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:12,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1536524786, now seen corresponding path program 9 times [2024-06-27 22:08:12,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:12,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440182018] [2024-06-27 22:08:12,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:12,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:14,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:14,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:14,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440182018] [2024-06-27 22:08:14,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440182018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:14,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:14,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:08:14,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530304075] [2024-06-27 22:08:14,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:14,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:08:14,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:14,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:08:14,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:08:14,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:08:14,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 509 transitions, 7157 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:14,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:14,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:08:14,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:15,317 INFO L124 PetriNetUnfolderBase]: 1458/2685 cut-off events. [2024-06-27 22:08:15,317 INFO L125 PetriNetUnfolderBase]: For 167075/167075 co-relation queries the response was YES. [2024-06-27 22:08:15,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22553 conditions, 2685 events. 1458/2685 cut-off events. For 167075/167075 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 16866 event pairs, 209 based on Foata normal form. 1/2608 useless extension candidates. Maximal degree in co-relation 22419. Up to 1941 conditions per place. [2024-06-27 22:08:15,349 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 338 selfloop transitions, 195 changer transitions 0/541 dead transitions. [2024-06-27 22:08:15,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 541 transitions, 8603 flow [2024-06-27 22:08:15,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:08:15,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:08:15,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-27 22:08:15,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-06-27 22:08:15,350 INFO L175 Difference]: Start difference. First operand has 285 places, 509 transitions, 7157 flow. Second operand 10 states and 187 transitions. [2024-06-27 22:08:15,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 541 transitions, 8603 flow [2024-06-27 22:08:15,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 541 transitions, 8358 flow, removed 91 selfloop flow, removed 3 redundant places. [2024-06-27 22:08:15,799 INFO L231 Difference]: Finished difference. Result has 292 places, 513 transitions, 7489 flow [2024-06-27 22:08:15,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6912, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7489, PETRI_PLACES=292, PETRI_TRANSITIONS=513} [2024-06-27 22:08:15,800 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 250 predicate places. [2024-06-27 22:08:15,800 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 513 transitions, 7489 flow [2024-06-27 22:08:15,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:15,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:15,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:15,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 22:08:15,801 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:15,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:15,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1536784535, now seen corresponding path program 3 times [2024-06-27 22:08:15,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:15,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173522009] [2024-06-27 22:08:15,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:15,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:17,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:17,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:17,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173522009] [2024-06-27 22:08:17,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173522009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:17,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:17,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:08:17,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799339223] [2024-06-27 22:08:17,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:17,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:08:17,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:17,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:08:17,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:08:17,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:08:17,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 513 transitions, 7489 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:17,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:17,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:08:17,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:18,412 INFO L124 PetriNetUnfolderBase]: 1417/2672 cut-off events. [2024-06-27 22:08:18,412 INFO L125 PetriNetUnfolderBase]: For 185141/185141 co-relation queries the response was YES. [2024-06-27 22:08:18,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22938 conditions, 2672 events. 1417/2672 cut-off events. For 185141/185141 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 17430 event pairs, 289 based on Foata normal form. 2/2586 useless extension candidates. Maximal degree in co-relation 22801. Up to 1846 conditions per place. [2024-06-27 22:08:18,444 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 431 selfloop transitions, 100 changer transitions 0/550 dead transitions. [2024-06-27 22:08:18,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 550 transitions, 9443 flow [2024-06-27 22:08:18,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:08:18,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:08:18,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-27 22:08:18,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058479532163743 [2024-06-27 22:08:18,445 INFO L175 Difference]: Start difference. First operand has 292 places, 513 transitions, 7489 flow. Second operand 9 states and 173 transitions. [2024-06-27 22:08:18,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 550 transitions, 9443 flow [2024-06-27 22:08:18,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 550 transitions, 9129 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-27 22:08:18,918 INFO L231 Difference]: Finished difference. Result has 296 places, 522 transitions, 7669 flow [2024-06-27 22:08:18,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7175, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7669, PETRI_PLACES=296, PETRI_TRANSITIONS=522} [2024-06-27 22:08:18,919 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 254 predicate places. [2024-06-27 22:08:18,919 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 522 transitions, 7669 flow [2024-06-27 22:08:18,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:18,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:18,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:18,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 22:08:18,920 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:18,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:18,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1536784256, now seen corresponding path program 10 times [2024-06-27 22:08:18,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:18,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609410618] [2024-06-27 22:08:18,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:18,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:20,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:20,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:20,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609410618] [2024-06-27 22:08:20,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609410618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:20,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:20,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:20,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934567530] [2024-06-27 22:08:20,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:20,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:20,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:20,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:20,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:20,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:08:20,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 522 transitions, 7669 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 22:08:20,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:20,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:08:20,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:21,325 INFO L124 PetriNetUnfolderBase]: 1533/2824 cut-off events. [2024-06-27 22:08:21,325 INFO L125 PetriNetUnfolderBase]: For 189797/189797 co-relation queries the response was YES. [2024-06-27 22:08:21,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24928 conditions, 2824 events. 1533/2824 cut-off events. For 189797/189797 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 17949 event pairs, 217 based on Foata normal form. 1/2741 useless extension candidates. Maximal degree in co-relation 24788. Up to 1896 conditions per place. [2024-06-27 22:08:21,362 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 287 selfloop transitions, 258 changer transitions 0/553 dead transitions. [2024-06-27 22:08:21,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 553 transitions, 9215 flow [2024-06-27 22:08:21,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:08:21,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:08:21,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 22:08:21,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48947368421052634 [2024-06-27 22:08:21,363 INFO L175 Difference]: Start difference. First operand has 296 places, 522 transitions, 7669 flow. Second operand 10 states and 186 transitions. [2024-06-27 22:08:21,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 553 transitions, 9215 flow [2024-06-27 22:08:21,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 553 transitions, 9092 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-27 22:08:21,861 INFO L231 Difference]: Finished difference. Result has 303 places, 528 transitions, 8534 flow [2024-06-27 22:08:21,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7546, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8534, PETRI_PLACES=303, PETRI_TRANSITIONS=528} [2024-06-27 22:08:21,862 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 261 predicate places. [2024-06-27 22:08:21,862 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 528 transitions, 8534 flow [2024-06-27 22:08:21,862 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 22:08:21,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:21,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:21,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 22:08:21,863 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:21,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:21,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1044586923, now seen corresponding path program 4 times [2024-06-27 22:08:21,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:21,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267432808] [2024-06-27 22:08:21,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:21,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:23,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:23,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:23,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267432808] [2024-06-27 22:08:23,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267432808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:23,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:23,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:08:23,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048058754] [2024-06-27 22:08:23,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:23,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:08:23,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:23,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:08:23,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:08:23,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:08:23,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 528 transitions, 8534 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:23,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:23,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:08:23,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:24,531 INFO L124 PetriNetUnfolderBase]: 1419/2672 cut-off events. [2024-06-27 22:08:24,531 INFO L125 PetriNetUnfolderBase]: For 188808/188808 co-relation queries the response was YES. [2024-06-27 22:08:24,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23865 conditions, 2672 events. 1419/2672 cut-off events. For 188808/188808 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 17450 event pairs, 290 based on Foata normal form. 2/2585 useless extension candidates. Maximal degree in co-relation 23722. Up to 1852 conditions per place. [2024-06-27 22:08:24,566 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 419 selfloop transitions, 116 changer transitions 0/554 dead transitions. [2024-06-27 22:08:24,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 554 transitions, 10039 flow [2024-06-27 22:08:24,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:08:24,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:08:24,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 22:08:24,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49707602339181284 [2024-06-27 22:08:24,567 INFO L175 Difference]: Start difference. First operand has 303 places, 528 transitions, 8534 flow. Second operand 9 states and 170 transitions. [2024-06-27 22:08:24,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 554 transitions, 10039 flow [2024-06-27 22:08:25,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 554 transitions, 9491 flow, removed 161 selfloop flow, removed 6 redundant places. [2024-06-27 22:08:25,093 INFO L231 Difference]: Finished difference. Result has 306 places, 529 transitions, 8259 flow [2024-06-27 22:08:25,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7994, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8259, PETRI_PLACES=306, PETRI_TRANSITIONS=529} [2024-06-27 22:08:25,094 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 264 predicate places. [2024-06-27 22:08:25,094 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 529 transitions, 8259 flow [2024-06-27 22:08:25,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:25,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:25,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:25,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 22:08:25,095 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:25,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:25,096 INFO L85 PathProgramCache]: Analyzing trace with hash -878819513, now seen corresponding path program 11 times [2024-06-27 22:08:25,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:25,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814375096] [2024-06-27 22:08:25,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:25,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:26,121 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 22:08:26,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:26,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814375096] [2024-06-27 22:08:26,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814375096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:26,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:26,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:26,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030925386] [2024-06-27 22:08:26,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:26,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:26,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:26,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:26,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:26,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:08:26,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 529 transitions, 8259 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 22:08:26,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:26,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:08:26,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:27,146 INFO L124 PetriNetUnfolderBase]: 1569/2896 cut-off events. [2024-06-27 22:08:27,146 INFO L125 PetriNetUnfolderBase]: For 189061/189061 co-relation queries the response was YES. [2024-06-27 22:08:27,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26024 conditions, 2896 events. 1569/2896 cut-off events. For 189061/189061 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 18682 event pairs, 190 based on Foata normal form. 1/2809 useless extension candidates. Maximal degree in co-relation 25879. Up to 2286 conditions per place. [2024-06-27 22:08:27,203 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 451 selfloop transitions, 118 changer transitions 0/577 dead transitions. [2024-06-27 22:08:27,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 577 transitions, 10040 flow [2024-06-27 22:08:27,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:08:27,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:08:27,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 22:08:27,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46578947368421053 [2024-06-27 22:08:27,205 INFO L175 Difference]: Start difference. First operand has 306 places, 529 transitions, 8259 flow. Second operand 10 states and 177 transitions. [2024-06-27 22:08:27,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 577 transitions, 10040 flow [2024-06-27 22:08:27,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 577 transitions, 9852 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-27 22:08:27,722 INFO L231 Difference]: Finished difference. Result has 311 places, 557 transitions, 8936 flow [2024-06-27 22:08:27,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8071, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8936, PETRI_PLACES=311, PETRI_TRANSITIONS=557} [2024-06-27 22:08:27,723 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 269 predicate places. [2024-06-27 22:08:27,723 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 557 transitions, 8936 flow [2024-06-27 22:08:27,723 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 22:08:27,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:27,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:27,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 22:08:27,724 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:27,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:27,724 INFO L85 PathProgramCache]: Analyzing trace with hash 615957935, now seen corresponding path program 12 times [2024-06-27 22:08:27,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:27,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2362458] [2024-06-27 22:08:27,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:27,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:29,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:29,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:29,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2362458] [2024-06-27 22:08:29,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2362458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:29,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:29,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:29,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470589422] [2024-06-27 22:08:29,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:29,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:29,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:29,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:29,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:29,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:08:29,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 557 transitions, 8936 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 22:08:29,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:29,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:08:29,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:30,095 INFO L124 PetriNetUnfolderBase]: 1589/2936 cut-off events. [2024-06-27 22:08:30,096 INFO L125 PetriNetUnfolderBase]: For 198091/198091 co-relation queries the response was YES. [2024-06-27 22:08:30,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26542 conditions, 2936 events. 1589/2936 cut-off events. For 198091/198091 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 19026 event pairs, 191 based on Foata normal form. 1/2849 useless extension candidates. Maximal degree in co-relation 26396. Up to 2284 conditions per place. [2024-06-27 22:08:30,132 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 443 selfloop transitions, 138 changer transitions 0/589 dead transitions. [2024-06-27 22:08:30,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 589 transitions, 10444 flow [2024-06-27 22:08:30,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:08:30,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:08:30,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 22:08:30,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-27 22:08:30,133 INFO L175 Difference]: Start difference. First operand has 311 places, 557 transitions, 8936 flow. Second operand 9 states and 168 transitions. [2024-06-27 22:08:30,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 589 transitions, 10444 flow [2024-06-27 22:08:30,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 589 transitions, 10135 flow, removed 83 selfloop flow, removed 5 redundant places. [2024-06-27 22:08:30,668 INFO L231 Difference]: Finished difference. Result has 315 places, 569 transitions, 9219 flow [2024-06-27 22:08:30,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8627, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9219, PETRI_PLACES=315, PETRI_TRANSITIONS=569} [2024-06-27 22:08:30,669 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 273 predicate places. [2024-06-27 22:08:30,669 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 569 transitions, 9219 flow [2024-06-27 22:08:30,669 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 22:08:30,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:30,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:30,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 22:08:30,670 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:30,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:30,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1754445010, now seen corresponding path program 11 times [2024-06-27 22:08:30,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:30,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166119606] [2024-06-27 22:08:30,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:30,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:31,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:31,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:31,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166119606] [2024-06-27 22:08:31,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166119606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:31,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:31,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:31,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327282259] [2024-06-27 22:08:31,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:31,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:31,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:31,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:31,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:31,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:08:31,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 569 transitions, 9219 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 22:08:31,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:31,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:08:31,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:32,920 INFO L124 PetriNetUnfolderBase]: 1629/2994 cut-off events. [2024-06-27 22:08:32,920 INFO L125 PetriNetUnfolderBase]: For 209910/209910 co-relation queries the response was YES. [2024-06-27 22:08:32,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27414 conditions, 2994 events. 1629/2994 cut-off events. For 209910/209910 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 19363 event pairs, 191 based on Foata normal form. 2/2908 useless extension candidates. Maximal degree in co-relation 27267. Up to 2326 conditions per place. [2024-06-27 22:08:32,961 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 455 selfloop transitions, 142 changer transitions 0/605 dead transitions. [2024-06-27 22:08:32,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 605 transitions, 10897 flow [2024-06-27 22:08:32,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:08:32,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:08:32,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 22:08:32,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-06-27 22:08:32,962 INFO L175 Difference]: Start difference. First operand has 315 places, 569 transitions, 9219 flow. Second operand 9 states and 169 transitions. [2024-06-27 22:08:32,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 605 transitions, 10897 flow [2024-06-27 22:08:33,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 605 transitions, 10459 flow, removed 89 selfloop flow, removed 7 redundant places. [2024-06-27 22:08:33,682 INFO L231 Difference]: Finished difference. Result has 317 places, 585 transitions, 9536 flow [2024-06-27 22:08:33,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8781, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9536, PETRI_PLACES=317, PETRI_TRANSITIONS=585} [2024-06-27 22:08:33,683 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 275 predicate places. [2024-06-27 22:08:33,683 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 585 transitions, 9536 flow [2024-06-27 22:08:33,683 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 22:08:33,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:33,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:33,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 22:08:33,683 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:33,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:33,684 INFO L85 PathProgramCache]: Analyzing trace with hash 620636052, now seen corresponding path program 12 times [2024-06-27 22:08:33,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:33,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560955866] [2024-06-27 22:08:33,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:33,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:35,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:35,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:35,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560955866] [2024-06-27 22:08:35,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560955866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:35,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:35,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:08:35,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126623402] [2024-06-27 22:08:35,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:35,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:08:35,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:35,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:08:35,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:08:35,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:08:35,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 585 transitions, 9536 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:35,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:35,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:08:35,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:36,354 INFO L124 PetriNetUnfolderBase]: 1663/3045 cut-off events. [2024-06-27 22:08:36,355 INFO L125 PetriNetUnfolderBase]: For 219844/219844 co-relation queries the response was YES. [2024-06-27 22:08:36,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28356 conditions, 3045 events. 1663/3045 cut-off events. For 219844/219844 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 19726 event pairs, 191 based on Foata normal form. 1/2958 useless extension candidates. Maximal degree in co-relation 28208. Up to 2311 conditions per place. [2024-06-27 22:08:36,398 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 435 selfloop transitions, 181 changer transitions 0/624 dead transitions. [2024-06-27 22:08:36,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 624 transitions, 11536 flow [2024-06-27 22:08:36,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:08:36,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:08:36,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:08:36,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789473684210526 [2024-06-27 22:08:36,399 INFO L175 Difference]: Start difference. First operand has 317 places, 585 transitions, 9536 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:08:36,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 624 transitions, 11536 flow [2024-06-27 22:08:37,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 624 transitions, 11061 flow, removed 108 selfloop flow, removed 7 redundant places. [2024-06-27 22:08:37,069 INFO L231 Difference]: Finished difference. Result has 321 places, 603 transitions, 10054 flow [2024-06-27 22:08:37,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9061, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10054, PETRI_PLACES=321, PETRI_TRANSITIONS=603} [2024-06-27 22:08:37,070 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 279 predicate places. [2024-06-27 22:08:37,070 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 603 transitions, 10054 flow [2024-06-27 22:08:37,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:37,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:37,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:37,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 22:08:37,071 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:37,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:37,071 INFO L85 PathProgramCache]: Analyzing trace with hash 620628395, now seen corresponding path program 13 times [2024-06-27 22:08:37,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:37,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082143033] [2024-06-27 22:08:37,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:37,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:38,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:38,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:38,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082143033] [2024-06-27 22:08:38,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082143033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:38,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:38,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:38,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777835689] [2024-06-27 22:08:38,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:38,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:38,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:38,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:38,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:38,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:08:38,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 603 transitions, 10054 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 22:08:38,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:38,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:08:38,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:39,284 INFO L124 PetriNetUnfolderBase]: 1679/3079 cut-off events. [2024-06-27 22:08:39,284 INFO L125 PetriNetUnfolderBase]: For 225289/225289 co-relation queries the response was YES. [2024-06-27 22:08:39,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28679 conditions, 3079 events. 1679/3079 cut-off events. For 225289/225289 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 20024 event pairs, 192 based on Foata normal form. 1/2992 useless extension candidates. Maximal degree in co-relation 28529. Up to 2380 conditions per place. [2024-06-27 22:08:39,329 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 466 selfloop transitions, 158 changer transitions 0/632 dead transitions. [2024-06-27 22:08:39,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 632 transitions, 11630 flow [2024-06-27 22:08:39,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:08:39,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:08:39,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 22:08:39,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-06-27 22:08:39,330 INFO L175 Difference]: Start difference. First operand has 321 places, 603 transitions, 10054 flow. Second operand 9 states and 169 transitions. [2024-06-27 22:08:39,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 632 transitions, 11630 flow [2024-06-27 22:08:40,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 632 transitions, 11259 flow, removed 106 selfloop flow, removed 6 redundant places. [2024-06-27 22:08:40,153 INFO L231 Difference]: Finished difference. Result has 324 places, 612 transitions, 10281 flow [2024-06-27 22:08:40,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9683, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10281, PETRI_PLACES=324, PETRI_TRANSITIONS=612} [2024-06-27 22:08:40,153 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 282 predicate places. [2024-06-27 22:08:40,154 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 612 transitions, 10281 flow [2024-06-27 22:08:40,154 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 22:08:40,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:40,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:40,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 22:08:40,154 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:40,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:40,155 INFO L85 PathProgramCache]: Analyzing trace with hash 620628612, now seen corresponding path program 13 times [2024-06-27 22:08:40,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:40,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742955222] [2024-06-27 22:08:40,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:40,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:41,437 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 22:08:41,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:41,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742955222] [2024-06-27 22:08:41,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742955222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:41,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:41,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:41,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395364348] [2024-06-27 22:08:41,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:41,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:41,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:41,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:41,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:41,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:08:41,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 612 transitions, 10281 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 22:08:41,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:41,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:08:41,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:42,532 INFO L124 PetriNetUnfolderBase]: 1677/3073 cut-off events. [2024-06-27 22:08:42,532 INFO L125 PetriNetUnfolderBase]: For 224936/224936 co-relation queries the response was YES. [2024-06-27 22:08:42,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28750 conditions, 3073 events. 1677/3073 cut-off events. For 224936/224936 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 19949 event pairs, 192 based on Foata normal form. 1/2986 useless extension candidates. Maximal degree in co-relation 28598. Up to 2393 conditions per place. [2024-06-27 22:08:42,578 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 474 selfloop transitions, 150 changer transitions 0/632 dead transitions. [2024-06-27 22:08:42,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 632 transitions, 11607 flow [2024-06-27 22:08:42,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:08:42,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:08:42,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 22:08:42,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-06-27 22:08:42,580 INFO L175 Difference]: Start difference. First operand has 324 places, 612 transitions, 10281 flow. Second operand 9 states and 169 transitions. [2024-06-27 22:08:42,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 632 transitions, 11607 flow [2024-06-27 22:08:43,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 632 transitions, 10987 flow, removed 158 selfloop flow, removed 7 redundant places. [2024-06-27 22:08:43,326 INFO L231 Difference]: Finished difference. Result has 326 places, 612 transitions, 9975 flow [2024-06-27 22:08:43,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9661, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9975, PETRI_PLACES=326, PETRI_TRANSITIONS=612} [2024-06-27 22:08:43,326 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 284 predicate places. [2024-06-27 22:08:43,326 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 612 transitions, 9975 flow [2024-06-27 22:08:43,327 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 22:08:43,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:43,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:43,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 22:08:43,327 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:43,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:43,328 INFO L85 PathProgramCache]: Analyzing trace with hash 794279142, now seen corresponding path program 14 times [2024-06-27 22:08:43,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:43,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129050860] [2024-06-27 22:08:43,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:43,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:45,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:45,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:45,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129050860] [2024-06-27 22:08:45,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129050860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:45,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:45,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:08:45,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602102478] [2024-06-27 22:08:45,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:45,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:08:45,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:45,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:08:45,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:08:45,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:08:45,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 612 transitions, 9975 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:45,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:45,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:08:45,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:46,462 INFO L124 PetriNetUnfolderBase]: 1707/3121 cut-off events. [2024-06-27 22:08:46,463 INFO L125 PetriNetUnfolderBase]: For 229869/229869 co-relation queries the response was YES. [2024-06-27 22:08:46,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29255 conditions, 3121 events. 1707/3121 cut-off events. For 229869/229869 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 20309 event pairs, 194 based on Foata normal form. 1/3034 useless extension candidates. Maximal degree in co-relation 29102. Up to 2290 conditions per place. [2024-06-27 22:08:46,505 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 419 selfloop transitions, 221 changer transitions 0/648 dead transitions. [2024-06-27 22:08:46,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 648 transitions, 12044 flow [2024-06-27 22:08:46,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:08:46,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:08:46,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 22:08:46,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-27 22:08:46,506 INFO L175 Difference]: Start difference. First operand has 326 places, 612 transitions, 9975 flow. Second operand 10 states and 184 transitions. [2024-06-27 22:08:46,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 648 transitions, 12044 flow [2024-06-27 22:08:47,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 648 transitions, 11667 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 22:08:47,261 INFO L231 Difference]: Finished difference. Result has 329 places, 627 transitions, 10701 flow [2024-06-27 22:08:47,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9598, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10701, PETRI_PLACES=329, PETRI_TRANSITIONS=627} [2024-06-27 22:08:47,262 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 287 predicate places. [2024-06-27 22:08:47,263 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 627 transitions, 10701 flow [2024-06-27 22:08:47,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:47,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:47,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:47,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 22:08:47,263 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:47,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:47,264 INFO L85 PathProgramCache]: Analyzing trace with hash 763692726, now seen corresponding path program 15 times [2024-06-27 22:08:47,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:47,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143358721] [2024-06-27 22:08:47,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:47,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:49,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:49,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:49,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143358721] [2024-06-27 22:08:49,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143358721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:49,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:49,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:08:49,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433370737] [2024-06-27 22:08:49,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:49,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:08:49,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:49,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:08:49,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:08:49,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:08:49,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 627 transitions, 10701 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:49,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:49,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:08:49,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:50,354 INFO L124 PetriNetUnfolderBase]: 1715/3133 cut-off events. [2024-06-27 22:08:50,354 INFO L125 PetriNetUnfolderBase]: For 240573/240573 co-relation queries the response was YES. [2024-06-27 22:08:50,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29967 conditions, 3133 events. 1715/3133 cut-off events. For 240573/240573 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 20427 event pairs, 194 based on Foata normal form. 1/3046 useless extension candidates. Maximal degree in co-relation 29812. Up to 2402 conditions per place. [2024-06-27 22:08:50,399 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 473 selfloop transitions, 170 changer transitions 0/651 dead transitions. [2024-06-27 22:08:50,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 651 transitions, 12454 flow [2024-06-27 22:08:50,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:08:50,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:08:50,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 22:08:50,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157894736842105 [2024-06-27 22:08:50,401 INFO L175 Difference]: Start difference. First operand has 329 places, 627 transitions, 10701 flow. Second operand 10 states and 183 transitions. [2024-06-27 22:08:50,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 651 transitions, 12454 flow [2024-06-27 22:08:51,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 651 transitions, 12035 flow, removed 120 selfloop flow, removed 6 redundant places. [2024-06-27 22:08:51,372 INFO L231 Difference]: Finished difference. Result has 333 places, 630 transitions, 10855 flow [2024-06-27 22:08:51,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10298, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10855, PETRI_PLACES=333, PETRI_TRANSITIONS=630} [2024-06-27 22:08:51,373 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 291 predicate places. [2024-06-27 22:08:51,373 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 630 transitions, 10855 flow [2024-06-27 22:08:51,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:51,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:51,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:51,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 22:08:51,373 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:51,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:51,373 INFO L85 PathProgramCache]: Analyzing trace with hash 794012015, now seen corresponding path program 14 times [2024-06-27 22:08:51,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:51,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78407343] [2024-06-27 22:08:51,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:51,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:52,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:52,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:52,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78407343] [2024-06-27 22:08:52,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78407343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:52,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:52,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:52,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184949159] [2024-06-27 22:08:52,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:52,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:52,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:52,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:52,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:08:52,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:08:52,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 630 transitions, 10855 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 22:08:52,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:52,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:08:52,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:53,850 INFO L124 PetriNetUnfolderBase]: 1727/3157 cut-off events. [2024-06-27 22:08:53,850 INFO L125 PetriNetUnfolderBase]: For 239148/239148 co-relation queries the response was YES. [2024-06-27 22:08:53,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30238 conditions, 3157 events. 1727/3157 cut-off events. For 239148/239148 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 20612 event pairs, 194 based on Foata normal form. 1/3070 useless extension candidates. Maximal degree in co-relation 30081. Up to 2412 conditions per place. [2024-06-27 22:08:54,002 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 474 selfloop transitions, 174 changer transitions 0/656 dead transitions. [2024-06-27 22:08:54,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 656 transitions, 12467 flow [2024-06-27 22:08:54,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:08:54,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:08:54,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 22:08:54,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49707602339181284 [2024-06-27 22:08:54,003 INFO L175 Difference]: Start difference. First operand has 333 places, 630 transitions, 10855 flow. Second operand 9 states and 170 transitions. [2024-06-27 22:08:54,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 656 transitions, 12467 flow [2024-06-27 22:08:54,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 656 transitions, 11664 flow, removed 131 selfloop flow, removed 9 redundant places. [2024-06-27 22:08:54,808 INFO L231 Difference]: Finished difference. Result has 333 places, 636 transitions, 10654 flow [2024-06-27 22:08:54,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10052, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10654, PETRI_PLACES=333, PETRI_TRANSITIONS=636} [2024-06-27 22:08:54,808 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 291 predicate places. [2024-06-27 22:08:54,808 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 636 transitions, 10654 flow [2024-06-27 22:08:54,809 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 22:08:54,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:54,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:54,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 22:08:54,809 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:54,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:54,810 INFO L85 PathProgramCache]: Analyzing trace with hash 794012232, now seen corresponding path program 16 times [2024-06-27 22:08:54,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:54,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562851405] [2024-06-27 22:08:54,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:54,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:56,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:56,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:56,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562851405] [2024-06-27 22:08:56,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562851405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:56,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:56,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:08:56,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208644807] [2024-06-27 22:08:56,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:56,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:08:56,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:56,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:08:56,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:08:56,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:08:56,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 636 transitions, 10654 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:56,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:08:56,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:08:56,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:08:57,362 INFO L124 PetriNetUnfolderBase]: 1731/3172 cut-off events. [2024-06-27 22:08:57,363 INFO L125 PetriNetUnfolderBase]: For 239293/239293 co-relation queries the response was YES. [2024-06-27 22:08:57,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29791 conditions, 3172 events. 1731/3172 cut-off events. For 239293/239293 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 20790 event pairs, 194 based on Foata normal form. 1/3083 useless extension candidates. Maximal degree in co-relation 29634. Up to 2444 conditions per place. [2024-06-27 22:08:57,409 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 491 selfloop transitions, 162 changer transitions 0/661 dead transitions. [2024-06-27 22:08:57,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 661 transitions, 12180 flow [2024-06-27 22:08:57,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:08:57,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:08:57,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 22:08:57,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763157894736842 [2024-06-27 22:08:57,413 INFO L175 Difference]: Start difference. First operand has 333 places, 636 transitions, 10654 flow. Second operand 10 states and 181 transitions. [2024-06-27 22:08:57,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 661 transitions, 12180 flow [2024-06-27 22:08:58,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 661 transitions, 11484 flow, removed 178 selfloop flow, removed 7 redundant places. [2024-06-27 22:08:58,244 INFO L231 Difference]: Finished difference. Result has 336 places, 640 transitions, 10436 flow [2024-06-27 22:08:58,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9958, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10436, PETRI_PLACES=336, PETRI_TRANSITIONS=640} [2024-06-27 22:08:58,245 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 294 predicate places. [2024-06-27 22:08:58,246 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 640 transitions, 10436 flow [2024-06-27 22:08:58,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:08:58,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:08:58,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:08:58,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 22:08:58,246 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:08:58,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:08:58,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1325812804, now seen corresponding path program 17 times [2024-06-27 22:08:58,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:08:58,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804311246] [2024-06-27 22:08:58,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:08:58,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:08:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:08:59,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:08:59,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:08:59,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804311246] [2024-06-27 22:08:59,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804311246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:08:59,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:08:59,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:08:59,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426380672] [2024-06-27 22:08:59,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:08:59,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:08:59,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:08:59,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:08:59,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:00,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:09:00,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 640 transitions, 10436 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 22:09:00,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:00,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:09:00,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:01,086 INFO L124 PetriNetUnfolderBase]: 1739/3184 cut-off events. [2024-06-27 22:09:01,086 INFO L125 PetriNetUnfolderBase]: For 241022/241022 co-relation queries the response was YES. [2024-06-27 22:09:01,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29763 conditions, 3184 events. 1739/3184 cut-off events. For 241022/241022 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 20829 event pairs, 206 based on Foata normal form. 1/3095 useless extension candidates. Maximal degree in co-relation 29605. Up to 1950 conditions per place. [2024-06-27 22:09:01,125 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 280 selfloop transitions, 382 changer transitions 0/670 dead transitions. [2024-06-27 22:09:01,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 670 transitions, 12610 flow [2024-06-27 22:09:01,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:09:01,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:09:01,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-27 22:09:01,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029239766081871 [2024-06-27 22:09:01,126 INFO L175 Difference]: Start difference. First operand has 336 places, 640 transitions, 10436 flow. Second operand 9 states and 172 transitions. [2024-06-27 22:09:01,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 670 transitions, 12610 flow [2024-06-27 22:09:01,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 670 transitions, 12192 flow, removed 52 selfloop flow, removed 8 redundant places. [2024-06-27 22:09:01,896 INFO L231 Difference]: Finished difference. Result has 338 places, 649 transitions, 11396 flow [2024-06-27 22:09:01,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10018, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=376, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11396, PETRI_PLACES=338, PETRI_TRANSITIONS=649} [2024-06-27 22:09:01,897 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 296 predicate places. [2024-06-27 22:09:01,897 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 649 transitions, 11396 flow [2024-06-27 22:09:01,897 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 22:09:01,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:01,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:01,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 22:09:01,898 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:01,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:01,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1325813083, now seen corresponding path program 5 times [2024-06-27 22:09:01,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:01,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816280603] [2024-06-27 22:09:01,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:01,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:03,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:03,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:03,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816280603] [2024-06-27 22:09:03,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816280603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:03,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:03,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:09:03,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926283566] [2024-06-27 22:09:03,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:03,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:09:03,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:03,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:09:03,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:03,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:09:03,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 649 transitions, 11396 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 22:09:03,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:03,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:09:03,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:04,899 INFO L124 PetriNetUnfolderBase]: 1597/3022 cut-off events. [2024-06-27 22:09:04,899 INFO L125 PetriNetUnfolderBase]: For 255413/255413 co-relation queries the response was YES. [2024-06-27 22:09:04,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29183 conditions, 3022 events. 1597/3022 cut-off events. For 255413/255413 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 20517 event pairs, 186 based on Foata normal form. 1/2920 useless extension candidates. Maximal degree in co-relation 29023. Up to 2017 conditions per place. [2024-06-27 22:09:04,945 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 563 selfloop transitions, 114 changer transitions 0/696 dead transitions. [2024-06-27 22:09:04,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 696 transitions, 14214 flow [2024-06-27 22:09:04,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:09:04,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:09:04,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-27 22:09:04,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5296052631578947 [2024-06-27 22:09:04,946 INFO L175 Difference]: Start difference. First operand has 338 places, 649 transitions, 11396 flow. Second operand 8 states and 161 transitions. [2024-06-27 22:09:04,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 696 transitions, 14214 flow [2024-06-27 22:09:05,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 696 transitions, 13555 flow, removed 193 selfloop flow, removed 4 redundant places. [2024-06-27 22:09:05,800 INFO L231 Difference]: Finished difference. Result has 346 places, 667 transitions, 11606 flow [2024-06-27 22:09:05,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10753, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11606, PETRI_PLACES=346, PETRI_TRANSITIONS=667} [2024-06-27 22:09:05,800 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 304 predicate places. [2024-06-27 22:09:05,800 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 667 transitions, 11606 flow [2024-06-27 22:09:05,800 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 22:09:05,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:05,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:05,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 22:09:05,801 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:05,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:05,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1012113853, now seen corresponding path program 6 times [2024-06-27 22:09:05,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:05,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294664791] [2024-06-27 22:09:05,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:05,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:07,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:07,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:07,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294664791] [2024-06-27 22:09:07,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294664791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:07,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:07,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:09:07,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106461230] [2024-06-27 22:09:07,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:07,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:09:07,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:07,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:09:07,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:08,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:09:08,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 667 transitions, 11606 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 22:09:08,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:08,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:09:08,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:09,083 INFO L124 PetriNetUnfolderBase]: 1623/3082 cut-off events. [2024-06-27 22:09:09,083 INFO L125 PetriNetUnfolderBase]: For 268033/268033 co-relation queries the response was YES. [2024-06-27 22:09:09,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30265 conditions, 3082 events. 1623/3082 cut-off events. For 268033/268033 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 21080 event pairs, 221 based on Foata normal form. 1/2974 useless extension candidates. Maximal degree in co-relation 30100. Up to 2336 conditions per place. [2024-06-27 22:09:09,129 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 598 selfloop transitions, 83 changer transitions 0/700 dead transitions. [2024-06-27 22:09:09,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 700 transitions, 13984 flow [2024-06-27 22:09:09,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:09:09,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:09:09,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-27 22:09:09,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-06-27 22:09:09,130 INFO L175 Difference]: Start difference. First operand has 346 places, 667 transitions, 11606 flow. Second operand 8 states and 160 transitions. [2024-06-27 22:09:09,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 700 transitions, 13984 flow [2024-06-27 22:09:10,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 700 transitions, 13808 flow, removed 74 selfloop flow, removed 1 redundant places. [2024-06-27 22:09:10,074 INFO L231 Difference]: Finished difference. Result has 354 places, 675 transitions, 11867 flow [2024-06-27 22:09:10,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11430, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11867, PETRI_PLACES=354, PETRI_TRANSITIONS=675} [2024-06-27 22:09:10,075 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 312 predicate places. [2024-06-27 22:09:10,075 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 675 transitions, 11867 flow [2024-06-27 22:09:10,075 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 22:09:10,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:10,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:10,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 22:09:10,076 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:10,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:10,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1011846664, now seen corresponding path program 18 times [2024-06-27 22:09:10,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:10,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087218197] [2024-06-27 22:09:10,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:10,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:11,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:11,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:11,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087218197] [2024-06-27 22:09:11,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087218197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:11,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:11,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:09:11,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271812447] [2024-06-27 22:09:11,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:11,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:09:11,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:11,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:09:11,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:11,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:09:11,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 675 transitions, 11867 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 22:09:11,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:11,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:09:11,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:12,405 INFO L124 PetriNetUnfolderBase]: 1825/3348 cut-off events. [2024-06-27 22:09:12,406 INFO L125 PetriNetUnfolderBase]: For 270180/270180 co-relation queries the response was YES. [2024-06-27 22:09:12,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33113 conditions, 3348 events. 1825/3348 cut-off events. For 270180/270180 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 22198 event pairs, 218 based on Foata normal form. 1/3252 useless extension candidates. Maximal degree in co-relation 32945. Up to 2440 conditions per place. [2024-06-27 22:09:12,454 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 456 selfloop transitions, 234 changer transitions 0/698 dead transitions. [2024-06-27 22:09:12,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 698 transitions, 13553 flow [2024-06-27 22:09:12,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:09:12,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:09:12,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 22:09:12,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48830409356725146 [2024-06-27 22:09:12,456 INFO L175 Difference]: Start difference. First operand has 354 places, 675 transitions, 11867 flow. Second operand 9 states and 167 transitions. [2024-06-27 22:09:12,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 698 transitions, 13553 flow [2024-06-27 22:09:13,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 698 transitions, 13323 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-27 22:09:13,616 INFO L231 Difference]: Finished difference. Result has 358 places, 678 transitions, 12333 flow [2024-06-27 22:09:13,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11637, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12333, PETRI_PLACES=358, PETRI_TRANSITIONS=678} [2024-06-27 22:09:13,617 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 316 predicate places. [2024-06-27 22:09:13,617 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 678 transitions, 12333 flow [2024-06-27 22:09:13,618 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 22:09:13,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:13,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:13,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 22:09:13,618 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:13,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:13,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1336864273, now seen corresponding path program 7 times [2024-06-27 22:09:13,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:13,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900218333] [2024-06-27 22:09:13,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:13,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:15,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:15,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:15,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900218333] [2024-06-27 22:09:15,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900218333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:15,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:15,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:09:15,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379381133] [2024-06-27 22:09:15,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:15,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:09:15,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:15,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:09:15,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:09:15,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:09:15,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 678 transitions, 12333 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:15,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:15,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:09:15,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:16,865 INFO L124 PetriNetUnfolderBase]: 1833/3370 cut-off events. [2024-06-27 22:09:16,865 INFO L125 PetriNetUnfolderBase]: For 275208/275208 co-relation queries the response was YES. [2024-06-27 22:09:16,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33590 conditions, 3370 events. 1833/3370 cut-off events. For 275208/275208 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 22449 event pairs, 488 based on Foata normal form. 1/3278 useless extension candidates. Maximal degree in co-relation 33421. Up to 2836 conditions per place. [2024-06-27 22:09:16,914 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 674 selfloop transitions, 22 changer transitions 0/704 dead transitions. [2024-06-27 22:09:16,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 704 transitions, 14099 flow [2024-06-27 22:09:16,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:09:16,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:09:16,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 22:09:16,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2024-06-27 22:09:16,915 INFO L175 Difference]: Start difference. First operand has 358 places, 678 transitions, 12333 flow. Second operand 10 states and 165 transitions. [2024-06-27 22:09:16,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 704 transitions, 14099 flow [2024-06-27 22:09:17,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 704 transitions, 13431 flow, removed 102 selfloop flow, removed 7 redundant places. [2024-06-27 22:09:17,904 INFO L231 Difference]: Finished difference. Result has 362 places, 684 transitions, 12013 flow [2024-06-27 22:09:17,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11665, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=657, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12013, PETRI_PLACES=362, PETRI_TRANSITIONS=684} [2024-06-27 22:09:17,904 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 320 predicate places. [2024-06-27 22:09:17,905 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 684 transitions, 12013 flow [2024-06-27 22:09:17,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:17,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:17,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:17,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 22:09:17,905 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:17,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:17,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1012123153, now seen corresponding path program 8 times [2024-06-27 22:09:17,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:17,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675495617] [2024-06-27 22:09:17,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:17,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:19,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:19,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:19,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675495617] [2024-06-27 22:09:19,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675495617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:19,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:19,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:09:19,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314716736] [2024-06-27 22:09:19,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:19,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:09:19,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:19,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:09:19,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:20,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:09:20,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 684 transitions, 12013 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 22:09:20,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:20,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:09:20,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:21,130 INFO L124 PetriNetUnfolderBase]: 1633/3098 cut-off events. [2024-06-27 22:09:21,130 INFO L125 PetriNetUnfolderBase]: For 272045/272045 co-relation queries the response was YES. [2024-06-27 22:09:21,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30391 conditions, 3098 events. 1633/3098 cut-off events. For 272045/272045 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 21182 event pairs, 218 based on Foata normal form. 1/2989 useless extension candidates. Maximal degree in co-relation 30220. Up to 2352 conditions per place. [2024-06-27 22:09:21,177 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 602 selfloop transitions, 88 changer transitions 0/709 dead transitions. [2024-06-27 22:09:21,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 709 transitions, 13972 flow [2024-06-27 22:09:21,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:09:21,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:09:21,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-27 22:09:21,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197368421052632 [2024-06-27 22:09:21,178 INFO L175 Difference]: Start difference. First operand has 362 places, 684 transitions, 12013 flow. Second operand 8 states and 158 transitions. [2024-06-27 22:09:21,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 709 transitions, 13972 flow [2024-06-27 22:09:22,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 709 transitions, 13645 flow, removed 153 selfloop flow, removed 6 redundant places. [2024-06-27 22:09:22,167 INFO L231 Difference]: Finished difference. Result has 365 places, 687 transitions, 12032 flow [2024-06-27 22:09:22,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11694, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12032, PETRI_PLACES=365, PETRI_TRANSITIONS=687} [2024-06-27 22:09:22,168 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 323 predicate places. [2024-06-27 22:09:22,168 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 687 transitions, 12032 flow [2024-06-27 22:09:22,168 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 22:09:22,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:22,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:22,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 22:09:22,169 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:22,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:22,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1011846447, now seen corresponding path program 15 times [2024-06-27 22:09:22,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:22,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136589194] [2024-06-27 22:09:22,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:22,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:23,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:23,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:23,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136589194] [2024-06-27 22:09:23,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136589194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:23,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:23,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:09:23,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088299793] [2024-06-27 22:09:23,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:23,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:09:23,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:23,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:09:23,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:23,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:09:23,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 687 transitions, 12032 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 22:09:23,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:23,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:09:23,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:24,566 INFO L124 PetriNetUnfolderBase]: 1829/3354 cut-off events. [2024-06-27 22:09:24,566 INFO L125 PetriNetUnfolderBase]: For 267584/267584 co-relation queries the response was YES. [2024-06-27 22:09:24,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32837 conditions, 3354 events. 1829/3354 cut-off events. For 267584/267584 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 22241 event pairs, 214 based on Foata normal form. 1/3258 useless extension candidates. Maximal degree in co-relation 32664. Up to 2353 conditions per place. [2024-06-27 22:09:24,617 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 430 selfloop transitions, 272 changer transitions 0/710 dead transitions. [2024-06-27 22:09:24,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 710 transitions, 13750 flow [2024-06-27 22:09:24,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:09:24,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:09:24,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 22:09:24,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48830409356725146 [2024-06-27 22:09:24,618 INFO L175 Difference]: Start difference. First operand has 365 places, 687 transitions, 12032 flow. Second operand 9 states and 167 transitions. [2024-06-27 22:09:24,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 710 transitions, 13750 flow [2024-06-27 22:09:25,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 710 transitions, 13407 flow, removed 103 selfloop flow, removed 4 redundant places. [2024-06-27 22:09:25,861 INFO L231 Difference]: Finished difference. Result has 370 places, 690 transitions, 12469 flow [2024-06-27 22:09:25,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11689, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12469, PETRI_PLACES=370, PETRI_TRANSITIONS=690} [2024-06-27 22:09:25,862 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 328 predicate places. [2024-06-27 22:09:25,862 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 690 transitions, 12469 flow [2024-06-27 22:09:25,862 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 22:09:25,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:25,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:25,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 22:09:25,863 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:25,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:25,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1325822383, now seen corresponding path program 9 times [2024-06-27 22:09:25,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:25,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515458034] [2024-06-27 22:09:25,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:25,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:27,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:27,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:27,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515458034] [2024-06-27 22:09:27,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515458034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:27,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:27,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:09:27,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324434603] [2024-06-27 22:09:27,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:27,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:09:27,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:27,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:09:27,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:27,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:09:27,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 690 transitions, 12469 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 22:09:27,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:27,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:09:27,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:29,004 INFO L124 PetriNetUnfolderBase]: 1635/3102 cut-off events. [2024-06-27 22:09:29,004 INFO L125 PetriNetUnfolderBase]: For 263824/263824 co-relation queries the response was YES. [2024-06-27 22:09:29,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30579 conditions, 3102 events. 1635/3102 cut-off events. For 263824/263824 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 21226 event pairs, 183 based on Foata normal form. 1/2996 useless extension candidates. Maximal degree in co-relation 30404. Up to 2057 conditions per place. [2024-06-27 22:09:29,049 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 574 selfloop transitions, 128 changer transitions 0/721 dead transitions. [2024-06-27 22:09:29,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 721 transitions, 14689 flow [2024-06-27 22:09:29,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:09:29,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:09:29,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-27 22:09:29,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5296052631578947 [2024-06-27 22:09:29,050 INFO L175 Difference]: Start difference. First operand has 370 places, 690 transitions, 12469 flow. Second operand 8 states and 161 transitions. [2024-06-27 22:09:29,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 721 transitions, 14689 flow [2024-06-27 22:09:30,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 721 transitions, 13887 flow, removed 131 selfloop flow, removed 7 redundant places. [2024-06-27 22:09:30,216 INFO L231 Difference]: Finished difference. Result has 373 places, 695 transitions, 12110 flow [2024-06-27 22:09:30,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11681, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12110, PETRI_PLACES=373, PETRI_TRANSITIONS=695} [2024-06-27 22:09:30,217 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 331 predicate places. [2024-06-27 22:09:30,217 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 695 transitions, 12110 flow [2024-06-27 22:09:30,217 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 22:09:30,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:30,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:30,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 22:09:30,218 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:30,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:30,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1012123494, now seen corresponding path program 1 times [2024-06-27 22:09:30,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:30,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130141569] [2024-06-27 22:09:30,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:30,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:32,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:32,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:32,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130141569] [2024-06-27 22:09:32,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130141569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:32,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:32,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:09:32,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306238499] [2024-06-27 22:09:32,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:32,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:09:32,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:32,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:09:32,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:32,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:09:32,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 695 transitions, 12110 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:32,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:32,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:09:32,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:33,201 INFO L124 PetriNetUnfolderBase]: 1570/3019 cut-off events. [2024-06-27 22:09:33,202 INFO L125 PetriNetUnfolderBase]: For 260590/260605 co-relation queries the response was YES. [2024-06-27 22:09:33,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29287 conditions, 3019 events. 1570/3019 cut-off events. For 260590/260605 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 20820 event pairs, 318 based on Foata normal form. 9/2919 useless extension candidates. Maximal degree in co-relation 29110. Up to 2243 conditions per place. [2024-06-27 22:09:33,247 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 594 selfloop transitions, 36 changer transitions 0/715 dead transitions. [2024-06-27 22:09:33,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 715 transitions, 13643 flow [2024-06-27 22:09:33,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:09:33,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:09:33,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-27 22:09:33,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164473684210527 [2024-06-27 22:09:33,248 INFO L175 Difference]: Start difference. First operand has 373 places, 695 transitions, 12110 flow. Second operand 8 states and 157 transitions. [2024-06-27 22:09:33,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 715 transitions, 13643 flow [2024-06-27 22:09:34,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 715 transitions, 13301 flow, removed 59 selfloop flow, removed 4 redundant places. [2024-06-27 22:09:34,286 INFO L231 Difference]: Finished difference. Result has 378 places, 696 transitions, 11864 flow [2024-06-27 22:09:34,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11770, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11864, PETRI_PLACES=378, PETRI_TRANSITIONS=696} [2024-06-27 22:09:34,287 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 336 predicate places. [2024-06-27 22:09:34,287 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 696 transitions, 11864 flow [2024-06-27 22:09:34,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:34,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:34,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:34,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 22:09:34,288 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:34,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:34,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1011854383, now seen corresponding path program 10 times [2024-06-27 22:09:34,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:34,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643463042] [2024-06-27 22:09:34,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:34,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:35,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:35,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:35,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643463042] [2024-06-27 22:09:35,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643463042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:35,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:35,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:09:35,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329824728] [2024-06-27 22:09:35,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:35,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:09:35,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:35,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:09:35,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:09:35,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:09:35,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 696 transitions, 11864 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:35,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:35,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:09:35,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:36,816 INFO L124 PetriNetUnfolderBase]: 1631/3106 cut-off events. [2024-06-27 22:09:36,817 INFO L125 PetriNetUnfolderBase]: For 257617/257617 co-relation queries the response was YES. [2024-06-27 22:09:36,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29698 conditions, 3106 events. 1631/3106 cut-off events. For 257617/257617 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 21321 event pairs, 223 based on Foata normal form. 1/2995 useless extension candidates. Maximal degree in co-relation 29519. Up to 2407 conditions per place. [2024-06-27 22:09:36,864 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 622 selfloop transitions, 75 changer transitions 0/716 dead transitions. [2024-06-27 22:09:36,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 716 transitions, 13410 flow [2024-06-27 22:09:36,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:09:36,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:09:36,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 22:09:36,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2024-06-27 22:09:36,865 INFO L175 Difference]: Start difference. First operand has 378 places, 696 transitions, 11864 flow. Second operand 9 states and 165 transitions. [2024-06-27 22:09:36,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 716 transitions, 13410 flow [2024-06-27 22:09:38,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 716 transitions, 13308 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 22:09:38,078 INFO L231 Difference]: Finished difference. Result has 382 places, 696 transitions, 11919 flow [2024-06-27 22:09:38,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11762, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11919, PETRI_PLACES=382, PETRI_TRANSITIONS=696} [2024-06-27 22:09:38,079 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 340 predicate places. [2024-06-27 22:09:38,079 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 696 transitions, 11919 flow [2024-06-27 22:09:38,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:38,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:38,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:38,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 22:09:38,079 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:38,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:38,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1012113574, now seen corresponding path program 19 times [2024-06-27 22:09:38,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:38,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956217461] [2024-06-27 22:09:38,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:38,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:39,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:39,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:39,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956217461] [2024-06-27 22:09:39,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956217461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:39,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:39,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:09:39,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057155488] [2024-06-27 22:09:39,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:39,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:09:39,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:39,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:09:39,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:09:39,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:09:39,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 696 transitions, 11919 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:39,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:39,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:09:39,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:40,961 INFO L124 PetriNetUnfolderBase]: 1843/3389 cut-off events. [2024-06-27 22:09:40,962 INFO L125 PetriNetUnfolderBase]: For 267465/267465 co-relation queries the response was YES. [2024-06-27 22:09:41,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32750 conditions, 3389 events. 1843/3389 cut-off events. For 267465/267465 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 22565 event pairs, 217 based on Foata normal form. 1/3290 useless extension candidates. Maximal degree in co-relation 32570. Up to 2416 conditions per place. [2024-06-27 22:09:41,016 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 470 selfloop transitions, 249 changer transitions 0/727 dead transitions. [2024-06-27 22:09:41,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 727 transitions, 14105 flow [2024-06-27 22:09:41,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:09:41,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:09:41,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 22:09:41,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-27 22:09:41,017 INFO L175 Difference]: Start difference. First operand has 382 places, 696 transitions, 11919 flow. Second operand 10 states and 185 transitions. [2024-06-27 22:09:41,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 727 transitions, 14105 flow [2024-06-27 22:09:42,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 727 transitions, 13911 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 22:09:42,199 INFO L231 Difference]: Finished difference. Result has 384 places, 702 transitions, 12597 flow [2024-06-27 22:09:42,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11725, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12597, PETRI_PLACES=384, PETRI_TRANSITIONS=702} [2024-06-27 22:09:42,200 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 342 predicate places. [2024-06-27 22:09:42,200 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 702 transitions, 12597 flow [2024-06-27 22:09:42,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:42,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:42,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:42,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 22:09:42,201 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:42,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:42,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1011854104, now seen corresponding path program 20 times [2024-06-27 22:09:42,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:42,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898316718] [2024-06-27 22:09:42,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:42,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:43,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:43,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:43,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898316718] [2024-06-27 22:09:43,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898316718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:43,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:43,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:09:43,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475200334] [2024-06-27 22:09:43,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:43,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:09:43,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:43,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:09:43,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:43,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:09:43,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 702 transitions, 12597 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 22:09:43,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:43,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:09:43,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:44,707 INFO L124 PetriNetUnfolderBase]: 1841/3390 cut-off events. [2024-06-27 22:09:44,707 INFO L125 PetriNetUnfolderBase]: For 267602/267602 co-relation queries the response was YES. [2024-06-27 22:09:44,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33002 conditions, 3390 events. 1841/3390 cut-off events. For 267602/267602 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 22582 event pairs, 217 based on Foata normal form. 1/3291 useless extension candidates. Maximal degree in co-relation 32821. Up to 2452 conditions per place. [2024-06-27 22:09:44,759 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 476 selfloop transitions, 239 changer transitions 0/723 dead transitions. [2024-06-27 22:09:44,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 723 transitions, 14221 flow [2024-06-27 22:09:44,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:09:44,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:09:44,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 22:09:44,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-06-27 22:09:44,761 INFO L175 Difference]: Start difference. First operand has 384 places, 702 transitions, 12597 flow. Second operand 9 states and 169 transitions. [2024-06-27 22:09:44,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 723 transitions, 14221 flow [2024-06-27 22:09:46,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 723 transitions, 13618 flow, removed 166 selfloop flow, removed 5 redundant places. [2024-06-27 22:09:46,132 INFO L231 Difference]: Finished difference. Result has 388 places, 703 transitions, 12584 flow [2024-06-27 22:09:46,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12052, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12584, PETRI_PLACES=388, PETRI_TRANSITIONS=703} [2024-06-27 22:09:46,133 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 346 predicate places. [2024-06-27 22:09:46,133 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 703 transitions, 12584 flow [2024-06-27 22:09:46,133 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 22:09:46,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:46,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:46,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 22:09:46,133 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:46,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:46,134 INFO L85 PathProgramCache]: Analyzing trace with hash -733096096, now seen corresponding path program 1 times [2024-06-27 22:09:46,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:46,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538149145] [2024-06-27 22:09:46,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:46,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:46,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:46,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:46,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538149145] [2024-06-27 22:09:46,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538149145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:46,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:46,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:09:46,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435249481] [2024-06-27 22:09:46,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:46,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:09:46,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:46,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:09:46,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:09:46,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-06-27 22:09:46,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 703 transitions, 12584 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:46,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:46,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-06-27 22:09:46,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:46,733 INFO L124 PetriNetUnfolderBase]: 1012/1955 cut-off events. [2024-06-27 22:09:46,733 INFO L125 PetriNetUnfolderBase]: For 175356/175489 co-relation queries the response was YES. [2024-06-27 22:09:46,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20124 conditions, 1955 events. 1012/1955 cut-off events. For 175356/175489 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 12516 event pairs, 242 based on Foata normal form. 189/2037 useless extension candidates. Maximal degree in co-relation 19942. Up to 776 conditions per place. [2024-06-27 22:09:46,764 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 218 selfloop transitions, 74 changer transitions 0/444 dead transitions. [2024-06-27 22:09:46,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 444 transitions, 9161 flow [2024-06-27 22:09:46,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:09:46,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:09:46,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-06-27 22:09:46,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7039473684210527 [2024-06-27 22:09:46,765 INFO L175 Difference]: Start difference. First operand has 388 places, 703 transitions, 12584 flow. Second operand 4 states and 107 transitions. [2024-06-27 22:09:46,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 444 transitions, 9161 flow [2024-06-27 22:09:47,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 444 transitions, 6429 flow, removed 258 selfloop flow, removed 88 redundant places. [2024-06-27 22:09:47,406 INFO L231 Difference]: Finished difference. Result has 305 places, 431 transitions, 5895 flow [2024-06-27 22:09:47,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5535, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=5895, PETRI_PLACES=305, PETRI_TRANSITIONS=431} [2024-06-27 22:09:47,406 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 263 predicate places. [2024-06-27 22:09:47,406 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 431 transitions, 5895 flow [2024-06-27 22:09:47,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:47,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:47,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:47,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 22:09:47,407 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:47,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:47,407 INFO L85 PathProgramCache]: Analyzing trace with hash 881914786, now seen corresponding path program 1 times [2024-06-27 22:09:47,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:47,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20593103] [2024-06-27 22:09:47,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:47,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:48,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:48,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:48,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20593103] [2024-06-27 22:09:48,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20593103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:48,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:48,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:09:48,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334996320] [2024-06-27 22:09:48,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:48,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:09:48,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:48,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:09:48,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:09:48,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:09:48,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 431 transitions, 5895 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:48,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:48,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:09:48,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:49,338 INFO L124 PetriNetUnfolderBase]: 831/1613 cut-off events. [2024-06-27 22:09:49,338 INFO L125 PetriNetUnfolderBase]: For 179522/179555 co-relation queries the response was YES. [2024-06-27 22:09:49,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15393 conditions, 1613 events. 831/1613 cut-off events. For 179522/179555 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 9411 event pairs, 158 based on Foata normal form. 14/1527 useless extension candidates. Maximal degree in co-relation 15248. Up to 1132 conditions per place. [2024-06-27 22:09:49,358 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 271 selfloop transitions, 160 changer transitions 0/452 dead transitions. [2024-06-27 22:09:49,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 452 transitions, 7187 flow [2024-06-27 22:09:49,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:09:49,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:09:49,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 22:09:49,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-06-27 22:09:49,359 INFO L175 Difference]: Start difference. First operand has 305 places, 431 transitions, 5895 flow. Second operand 9 states and 169 transitions. [2024-06-27 22:09:49,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 452 transitions, 7187 flow [2024-06-27 22:09:49,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 452 transitions, 7185 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:09:49,887 INFO L231 Difference]: Finished difference. Result has 314 places, 436 transitions, 6506 flow [2024-06-27 22:09:49,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5893, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6506, PETRI_PLACES=314, PETRI_TRANSITIONS=436} [2024-06-27 22:09:49,888 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 272 predicate places. [2024-06-27 22:09:49,888 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 436 transitions, 6506 flow [2024-06-27 22:09:49,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:09:49,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:49,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:49,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 22:09:49,888 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:49,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:49,889 INFO L85 PathProgramCache]: Analyzing trace with hash 2041977412, now seen corresponding path program 1 times [2024-06-27 22:09:49,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:49,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064822699] [2024-06-27 22:09:49,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:49,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:51,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:51,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:51,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064822699] [2024-06-27 22:09:51,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064822699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:51,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:51,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:09:51,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938797009] [2024-06-27 22:09:51,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:51,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:09:51,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:51,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:09:51,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:09:51,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:09:51,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 436 transitions, 6506 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 22:09:51,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:51,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:09:51,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:52,485 INFO L124 PetriNetUnfolderBase]: 1047/1914 cut-off events. [2024-06-27 22:09:52,485 INFO L125 PetriNetUnfolderBase]: For 190203/190203 co-relation queries the response was YES. [2024-06-27 22:09:52,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18551 conditions, 1914 events. 1047/1914 cut-off events. For 190203/190203 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 10866 event pairs, 189 based on Foata normal form. 1/1817 useless extension candidates. Maximal degree in co-relation 18402. Up to 1544 conditions per place. [2024-06-27 22:09:52,507 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 336 selfloop transitions, 120 changer transitions 0/465 dead transitions. [2024-06-27 22:09:52,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 465 transitions, 7939 flow [2024-06-27 22:09:52,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:09:52,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:09:52,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:09:52,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-06-27 22:09:52,508 INFO L175 Difference]: Start difference. First operand has 314 places, 436 transitions, 6506 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:09:52,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 465 transitions, 7939 flow [2024-06-27 22:09:53,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 465 transitions, 7662 flow, removed 57 selfloop flow, removed 5 redundant places. [2024-06-27 22:09:53,206 INFO L231 Difference]: Finished difference. Result has 321 places, 440 transitions, 6731 flow [2024-06-27 22:09:53,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6241, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6731, PETRI_PLACES=321, PETRI_TRANSITIONS=440} [2024-06-27 22:09:53,207 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 279 predicate places. [2024-06-27 22:09:53,207 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 440 transitions, 6731 flow [2024-06-27 22:09:53,207 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 22:09:53,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:53,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:53,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 22:09:53,207 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:53,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:53,208 INFO L85 PathProgramCache]: Analyzing trace with hash 980823232, now seen corresponding path program 2 times [2024-06-27 22:09:53,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:53,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899379716] [2024-06-27 22:09:53,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:53,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:54,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:54,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:54,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899379716] [2024-06-27 22:09:54,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899379716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:54,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:54,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:09:54,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672727913] [2024-06-27 22:09:54,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:54,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:09:54,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:54,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:09:54,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:09:54,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:09:54,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 440 transitions, 6731 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:09:54,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:54,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:09:54,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:55,629 INFO L124 PetriNetUnfolderBase]: 1045/1910 cut-off events. [2024-06-27 22:09:55,629 INFO L125 PetriNetUnfolderBase]: For 185355/185355 co-relation queries the response was YES. [2024-06-27 22:09:55,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18456 conditions, 1910 events. 1045/1910 cut-off events. For 185355/185355 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 10849 event pairs, 196 based on Foata normal form. 1/1812 useless extension candidates. Maximal degree in co-relation 18303. Up to 1573 conditions per place. [2024-06-27 22:09:55,654 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 345 selfloop transitions, 110 changer transitions 0/464 dead transitions. [2024-06-27 22:09:55,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 464 transitions, 7755 flow [2024-06-27 22:09:55,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:09:55,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:09:55,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 22:09:55,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43779904306220097 [2024-06-27 22:09:55,655 INFO L175 Difference]: Start difference. First operand has 321 places, 440 transitions, 6731 flow. Second operand 11 states and 183 transitions. [2024-06-27 22:09:55,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 464 transitions, 7755 flow [2024-06-27 22:09:56,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 464 transitions, 7390 flow, removed 81 selfloop flow, removed 8 redundant places. [2024-06-27 22:09:56,366 INFO L231 Difference]: Finished difference. Result has 324 places, 440 transitions, 6594 flow [2024-06-27 22:09:56,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6366, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6594, PETRI_PLACES=324, PETRI_TRANSITIONS=440} [2024-06-27 22:09:56,367 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 282 predicate places. [2024-06-27 22:09:56,367 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 440 transitions, 6594 flow [2024-06-27 22:09:56,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:09:56,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:56,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:56,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 22:09:56,367 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:56,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:56,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1181890010, now seen corresponding path program 3 times [2024-06-27 22:09:56,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:56,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099911190] [2024-06-27 22:09:56,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:56,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:09:58,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:09:58,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:09:58,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099911190] [2024-06-27 22:09:58,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099911190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:09:58,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:09:58,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:09:58,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077876566] [2024-06-27 22:09:58,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:09:58,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:09:58,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:09:58,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:09:58,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:09:58,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:09:58,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 440 transitions, 6594 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:09:58,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:09:58,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:09:58,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:09:59,023 INFO L124 PetriNetUnfolderBase]: 1053/1923 cut-off events. [2024-06-27 22:09:59,023 INFO L125 PetriNetUnfolderBase]: For 188550/188550 co-relation queries the response was YES. [2024-06-27 22:09:59,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18448 conditions, 1923 events. 1053/1923 cut-off events. For 188550/188550 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 10948 event pairs, 198 based on Foata normal form. 1/1824 useless extension candidates. Maximal degree in co-relation 18294. Up to 1593 conditions per place. [2024-06-27 22:09:59,046 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 356 selfloop transitions, 101 changer transitions 0/466 dead transitions. [2024-06-27 22:09:59,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 466 transitions, 7754 flow [2024-06-27 22:09:59,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:09:59,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:09:59,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 22:09:59,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44019138755980863 [2024-06-27 22:09:59,047 INFO L175 Difference]: Start difference. First operand has 324 places, 440 transitions, 6594 flow. Second operand 11 states and 184 transitions. [2024-06-27 22:09:59,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 466 transitions, 7754 flow [2024-06-27 22:09:59,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 466 transitions, 7469 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-27 22:09:59,748 INFO L231 Difference]: Finished difference. Result has 325 places, 444 transitions, 6673 flow [2024-06-27 22:09:59,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6331, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6673, PETRI_PLACES=325, PETRI_TRANSITIONS=444} [2024-06-27 22:09:59,749 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 283 predicate places. [2024-06-27 22:09:59,749 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 444 transitions, 6673 flow [2024-06-27 22:09:59,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:09:59,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:09:59,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:09:59,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 22:09:59,749 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:09:59,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:09:59,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1183049720, now seen corresponding path program 4 times [2024-06-27 22:09:59,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:09:59,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414527396] [2024-06-27 22:09:59,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:09:59,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:09:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:01,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:01,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:01,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414527396] [2024-06-27 22:10:01,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414527396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:01,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:01,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:10:01,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436510398] [2024-06-27 22:10:01,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:01,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:10:01,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:01,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:10:01,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:10:01,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:10:01,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 444 transitions, 6673 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:10:01,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:01,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:10:01,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:02,654 INFO L124 PetriNetUnfolderBase]: 1061/1934 cut-off events. [2024-06-27 22:10:02,654 INFO L125 PetriNetUnfolderBase]: For 193228/193228 co-relation queries the response was YES. [2024-06-27 22:10:02,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18629 conditions, 1934 events. 1061/1934 cut-off events. For 193228/193228 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 11003 event pairs, 195 based on Foata normal form. 1/1832 useless extension candidates. Maximal degree in co-relation 18474. Up to 1580 conditions per place. [2024-06-27 22:10:02,677 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 348 selfloop transitions, 113 changer transitions 0/470 dead transitions. [2024-06-27 22:10:02,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 470 transitions, 7819 flow [2024-06-27 22:10:02,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:10:02,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:10:02,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:10:02,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-06-27 22:10:02,678 INFO L175 Difference]: Start difference. First operand has 325 places, 444 transitions, 6673 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:10:02,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 470 transitions, 7819 flow [2024-06-27 22:10:03,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 470 transitions, 7543 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-27 22:10:03,394 INFO L231 Difference]: Finished difference. Result has 327 places, 448 transitions, 6763 flow [2024-06-27 22:10:03,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6397, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6763, PETRI_PLACES=327, PETRI_TRANSITIONS=448} [2024-06-27 22:10:03,395 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 285 predicate places. [2024-06-27 22:10:03,395 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 448 transitions, 6763 flow [2024-06-27 22:10:03,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:10:03,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:03,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:03,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 22:10:03,395 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:03,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:03,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1346635414, now seen corresponding path program 5 times [2024-06-27 22:10:03,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:03,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187475773] [2024-06-27 22:10:03,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:03,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:05,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:05,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:05,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187475773] [2024-06-27 22:10:05,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187475773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:05,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:05,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:10:05,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784121369] [2024-06-27 22:10:05,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:05,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:10:05,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:05,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:10:05,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:10:05,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:10:05,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 448 transitions, 6763 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:10:05,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:05,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:10:05,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:06,365 INFO L124 PetriNetUnfolderBase]: 1067/1950 cut-off events. [2024-06-27 22:10:06,366 INFO L125 PetriNetUnfolderBase]: For 198274/198274 co-relation queries the response was YES. [2024-06-27 22:10:06,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18828 conditions, 1950 events. 1067/1950 cut-off events. For 198274/198274 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 11155 event pairs, 186 based on Foata normal form. 1/1849 useless extension candidates. Maximal degree in co-relation 18672. Up to 1565 conditions per place. [2024-06-27 22:10:06,392 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 330 selfloop transitions, 133 changer transitions 0/472 dead transitions. [2024-06-27 22:10:06,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 472 transitions, 7911 flow [2024-06-27 22:10:06,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:10:06,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:10:06,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 22:10:06,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43779904306220097 [2024-06-27 22:10:06,394 INFO L175 Difference]: Start difference. First operand has 327 places, 448 transitions, 6763 flow. Second operand 11 states and 183 transitions. [2024-06-27 22:10:06,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 472 transitions, 7911 flow [2024-06-27 22:10:07,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 472 transitions, 7595 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-27 22:10:07,147 INFO L231 Difference]: Finished difference. Result has 329 places, 450 transitions, 6838 flow [2024-06-27 22:10:07,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6447, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6838, PETRI_PLACES=329, PETRI_TRANSITIONS=450} [2024-06-27 22:10:07,148 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 287 predicate places. [2024-06-27 22:10:07,148 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 450 transitions, 6838 flow [2024-06-27 22:10:07,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:10:07,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:07,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:07,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 22:10:07,149 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:07,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:07,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1376394484, now seen corresponding path program 6 times [2024-06-27 22:10:07,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:07,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611347640] [2024-06-27 22:10:07,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:07,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:09,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:09,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:09,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611347640] [2024-06-27 22:10:09,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611347640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:09,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:09,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:10:09,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782064739] [2024-06-27 22:10:09,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:09,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:10:09,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:09,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:10:09,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:10:09,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:10:09,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 450 transitions, 6838 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 22:10:09,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:09,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:10:09,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:09,980 INFO L124 PetriNetUnfolderBase]: 1073/1956 cut-off events. [2024-06-27 22:10:09,980 INFO L125 PetriNetUnfolderBase]: For 202071/202071 co-relation queries the response was YES. [2024-06-27 22:10:09,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18986 conditions, 1956 events. 1073/1956 cut-off events. For 202071/202071 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 11172 event pairs, 192 based on Foata normal form. 1/1855 useless extension candidates. Maximal degree in co-relation 18829. Up to 1589 conditions per place. [2024-06-27 22:10:10,006 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 339 selfloop transitions, 126 changer transitions 0/474 dead transitions. [2024-06-27 22:10:10,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 474 transitions, 7994 flow [2024-06-27 22:10:10,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:10:10,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:10:10,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 22:10:10,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43779904306220097 [2024-06-27 22:10:10,009 INFO L175 Difference]: Start difference. First operand has 329 places, 450 transitions, 6838 flow. Second operand 11 states and 183 transitions. [2024-06-27 22:10:10,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 474 transitions, 7994 flow [2024-06-27 22:10:10,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 474 transitions, 7627 flow, removed 53 selfloop flow, removed 9 redundant places. [2024-06-27 22:10:10,812 INFO L231 Difference]: Finished difference. Result has 331 places, 452 transitions, 6852 flow [2024-06-27 22:10:10,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6471, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6852, PETRI_PLACES=331, PETRI_TRANSITIONS=452} [2024-06-27 22:10:10,813 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 289 predicate places. [2024-06-27 22:10:10,813 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 452 transitions, 6852 flow [2024-06-27 22:10:10,813 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 22:10:10,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:10,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:10,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 22:10:10,813 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:10,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:10,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1382621764, now seen corresponding path program 7 times [2024-06-27 22:10:10,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:10,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338067928] [2024-06-27 22:10:10,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:10,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:12,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:12,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:12,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338067928] [2024-06-27 22:10:12,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338067928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:12,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:12,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:10:12,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721794488] [2024-06-27 22:10:12,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:12,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:10:12,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:12,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:10:12,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:10:12,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:10:12,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 452 transitions, 6852 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:10:12,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:12,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:10:12,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:13,701 INFO L124 PetriNetUnfolderBase]: 1079/1971 cut-off events. [2024-06-27 22:10:13,701 INFO L125 PetriNetUnfolderBase]: For 205767/205767 co-relation queries the response was YES. [2024-06-27 22:10:13,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19088 conditions, 1971 events. 1079/1971 cut-off events. For 205767/205767 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 11293 event pairs, 169 based on Foata normal form. 1/1866 useless extension candidates. Maximal degree in co-relation 18930. Up to 1481 conditions per place. [2024-06-27 22:10:13,727 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 295 selfloop transitions, 172 changer transitions 0/476 dead transitions. [2024-06-27 22:10:13,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 476 transitions, 8016 flow [2024-06-27 22:10:13,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:10:13,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:10:13,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:10:13,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-06-27 22:10:13,728 INFO L175 Difference]: Start difference. First operand has 331 places, 452 transitions, 6852 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:10:13,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 476 transitions, 8016 flow [2024-06-27 22:10:14,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 476 transitions, 7659 flow, removed 55 selfloop flow, removed 9 redundant places. [2024-06-27 22:10:14,523 INFO L231 Difference]: Finished difference. Result has 333 places, 454 transitions, 6972 flow [2024-06-27 22:10:14,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6495, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6972, PETRI_PLACES=333, PETRI_TRANSITIONS=454} [2024-06-27 22:10:14,523 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 291 predicate places. [2024-06-27 22:10:14,523 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 454 transitions, 6972 flow [2024-06-27 22:10:14,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:10:14,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:14,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:14,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 22:10:14,524 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:14,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:14,524 INFO L85 PathProgramCache]: Analyzing trace with hash -2073562982, now seen corresponding path program 2 times [2024-06-27 22:10:14,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:14,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998841272] [2024-06-27 22:10:14,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:14,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:15,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:15,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:15,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998841272] [2024-06-27 22:10:15,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998841272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:15,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:15,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:10:15,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295884301] [2024-06-27 22:10:15,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:15,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:10:15,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:15,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:10:15,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:10:15,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:10:15,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 454 transitions, 6972 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 22:10:15,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:15,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:10:15,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:16,568 INFO L124 PetriNetUnfolderBase]: 881/1703 cut-off events. [2024-06-27 22:10:16,568 INFO L125 PetriNetUnfolderBase]: For 208412/208479 co-relation queries the response was YES. [2024-06-27 22:10:16,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17268 conditions, 1703 events. 881/1703 cut-off events. For 208412/208479 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 10105 event pairs, 167 based on Foata normal form. 15/1607 useless extension candidates. Maximal degree in co-relation 17109. Up to 1274 conditions per place. [2024-06-27 22:10:16,590 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 303 selfloop transitions, 146 changer transitions 0/469 dead transitions. [2024-06-27 22:10:16,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 469 transitions, 7960 flow [2024-06-27 22:10:16,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:10:16,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:10:16,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 22:10:16,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590643274853801 [2024-06-27 22:10:16,591 INFO L175 Difference]: Start difference. First operand has 333 places, 454 transitions, 6972 flow. Second operand 9 states and 157 transitions. [2024-06-27 22:10:16,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 469 transitions, 7960 flow [2024-06-27 22:10:17,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 469 transitions, 7507 flow, removed 57 selfloop flow, removed 9 redundant places. [2024-06-27 22:10:17,352 INFO L231 Difference]: Finished difference. Result has 333 places, 456 transitions, 6883 flow [2024-06-27 22:10:17,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6519, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6883, PETRI_PLACES=333, PETRI_TRANSITIONS=456} [2024-06-27 22:10:17,353 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 291 predicate places. [2024-06-27 22:10:17,353 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 456 transitions, 6883 flow [2024-06-27 22:10:17,353 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 22:10:17,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:17,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:17,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 22:10:17,353 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:17,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:17,353 INFO L85 PathProgramCache]: Analyzing trace with hash -2067365462, now seen corresponding path program 3 times [2024-06-27 22:10:17,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:17,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969265532] [2024-06-27 22:10:17,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:17,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:18,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:18,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:18,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969265532] [2024-06-27 22:10:18,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969265532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:18,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:18,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:10:18,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632011741] [2024-06-27 22:10:18,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:18,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:10:18,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:18,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:10:18,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:10:19,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:10:19,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 456 transitions, 6883 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:19,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:19,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:10:19,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:19,573 INFO L124 PetriNetUnfolderBase]: 894/1723 cut-off events. [2024-06-27 22:10:19,573 INFO L125 PetriNetUnfolderBase]: For 228459/228499 co-relation queries the response was YES. [2024-06-27 22:10:19,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17977 conditions, 1723 events. 894/1723 cut-off events. For 228459/228499 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 10143 event pairs, 155 based on Foata normal form. 15/1627 useless extension candidates. Maximal degree in co-relation 17819. Up to 1097 conditions per place. [2024-06-27 22:10:19,596 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 232 selfloop transitions, 226 changer transitions 0/479 dead transitions. [2024-06-27 22:10:19,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 479 transitions, 8568 flow [2024-06-27 22:10:19,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:10:19,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:10:19,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 22:10:19,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:10:19,597 INFO L175 Difference]: Start difference. First operand has 333 places, 456 transitions, 6883 flow. Second operand 9 states and 171 transitions. [2024-06-27 22:10:19,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 479 transitions, 8568 flow [2024-06-27 22:10:20,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 479 transitions, 8230 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-27 22:10:20,329 INFO L231 Difference]: Finished difference. Result has 337 places, 464 transitions, 7502 flow [2024-06-27 22:10:20,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6545, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7502, PETRI_PLACES=337, PETRI_TRANSITIONS=464} [2024-06-27 22:10:20,330 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 295 predicate places. [2024-06-27 22:10:20,330 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 464 transitions, 7502 flow [2024-06-27 22:10:20,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:20,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:20,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:20,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 22:10:20,330 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:20,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:20,331 INFO L85 PathProgramCache]: Analyzing trace with hash -602261844, now seen corresponding path program 4 times [2024-06-27 22:10:20,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:20,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836332004] [2024-06-27 22:10:20,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:20,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:21,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:21,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:21,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836332004] [2024-06-27 22:10:21,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836332004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:21,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:21,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:10:21,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829860194] [2024-06-27 22:10:21,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:21,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:10:21,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:21,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:10:21,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:10:22,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:10:22,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 464 transitions, 7502 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 22:10:22,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:22,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:10:22,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:22,903 INFO L124 PetriNetUnfolderBase]: 931/1779 cut-off events. [2024-06-27 22:10:22,903 INFO L125 PetriNetUnfolderBase]: For 252717/252783 co-relation queries the response was YES. [2024-06-27 22:10:22,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19404 conditions, 1779 events. 931/1779 cut-off events. For 252717/252783 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 10490 event pairs, 155 based on Foata normal form. 19/1674 useless extension candidates. Maximal degree in co-relation 19242. Up to 1203 conditions per place. [2024-06-27 22:10:22,925 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 284 selfloop transitions, 185 changer transitions 0/489 dead transitions. [2024-06-27 22:10:22,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 489 transitions, 9187 flow [2024-06-27 22:10:22,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:10:22,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:10:22,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 22:10:22,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2024-06-27 22:10:22,926 INFO L175 Difference]: Start difference. First operand has 337 places, 464 transitions, 7502 flow. Second operand 9 states and 166 transitions. [2024-06-27 22:10:22,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 489 transitions, 9187 flow [2024-06-27 22:10:23,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 489 transitions, 8932 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-27 22:10:23,804 INFO L231 Difference]: Finished difference. Result has 343 places, 472 transitions, 7984 flow [2024-06-27 22:10:23,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7249, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7984, PETRI_PLACES=343, PETRI_TRANSITIONS=472} [2024-06-27 22:10:23,804 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 301 predicate places. [2024-06-27 22:10:23,805 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 472 transitions, 7984 flow [2024-06-27 22:10:23,805 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 22:10:23,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:23,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:23,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 22:10:23,805 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:23,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:23,805 INFO L85 PathProgramCache]: Analyzing trace with hash 7654170, now seen corresponding path program 8 times [2024-06-27 22:10:23,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:23,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020981058] [2024-06-27 22:10:23,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:23,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:25,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:25,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:25,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020981058] [2024-06-27 22:10:25,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020981058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:25,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:25,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:10:25,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798232681] [2024-06-27 22:10:25,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:25,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:10:25,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:25,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:10:25,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:10:25,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:10:25,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 472 transitions, 7984 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:10:25,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:25,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:10:25,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:26,504 INFO L124 PetriNetUnfolderBase]: 1157/2085 cut-off events. [2024-06-27 22:10:26,504 INFO L125 PetriNetUnfolderBase]: For 253021/253021 co-relation queries the response was YES. [2024-06-27 22:10:26,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22165 conditions, 2085 events. 1157/2085 cut-off events. For 253021/253021 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 11947 event pairs, 128 based on Foata normal form. 1/1967 useless extension candidates. Maximal degree in co-relation 22000. Up to 1750 conditions per place. [2024-06-27 22:10:26,535 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 389 selfloop transitions, 100 changer transitions 0/498 dead transitions. [2024-06-27 22:10:26,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 498 transitions, 9226 flow [2024-06-27 22:10:26,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:10:26,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:10:26,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 22:10:26,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44019138755980863 [2024-06-27 22:10:26,537 INFO L175 Difference]: Start difference. First operand has 343 places, 472 transitions, 7984 flow. Second operand 11 states and 184 transitions. [2024-06-27 22:10:26,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 498 transitions, 9226 flow [2024-06-27 22:10:27,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 498 transitions, 8965 flow, removed 49 selfloop flow, removed 4 redundant places. [2024-06-27 22:10:27,653 INFO L231 Difference]: Finished difference. Result has 350 places, 478 transitions, 8121 flow [2024-06-27 22:10:27,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7723, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8121, PETRI_PLACES=350, PETRI_TRANSITIONS=478} [2024-06-27 22:10:27,653 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 308 predicate places. [2024-06-27 22:10:27,653 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 478 transitions, 8121 flow [2024-06-27 22:10:27,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:10:27,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:27,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:27,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 22:10:27,654 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:27,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:27,654 INFO L85 PathProgramCache]: Analyzing trace with hash -837310772, now seen corresponding path program 9 times [2024-06-27 22:10:27,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:27,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950474389] [2024-06-27 22:10:27,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:27,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:29,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:29,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:29,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950474389] [2024-06-27 22:10:29,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950474389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:29,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:29,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:10:29,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666875587] [2024-06-27 22:10:29,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:29,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:10:29,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:29,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:10:29,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:10:29,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:10:29,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 478 transitions, 8121 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:10:29,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:29,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:10:29,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:30,345 INFO L124 PetriNetUnfolderBase]: 1167/2105 cut-off events. [2024-06-27 22:10:30,345 INFO L125 PetriNetUnfolderBase]: For 258340/258340 co-relation queries the response was YES. [2024-06-27 22:10:30,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22473 conditions, 2105 events. 1167/2105 cut-off events. For 258340/258340 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 12088 event pairs, 128 based on Foata normal form. 1/1984 useless extension candidates. Maximal degree in co-relation 22305. Up to 1756 conditions per place. [2024-06-27 22:10:30,372 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 391 selfloop transitions, 104 changer transitions 0/504 dead transitions. [2024-06-27 22:10:30,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 504 transitions, 9361 flow [2024-06-27 22:10:30,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:10:30,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:10:30,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:10:30,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-06-27 22:10:30,373 INFO L175 Difference]: Start difference. First operand has 350 places, 478 transitions, 8121 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:10:30,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 504 transitions, 9361 flow [2024-06-27 22:10:31,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 504 transitions, 9089 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-27 22:10:31,483 INFO L231 Difference]: Finished difference. Result has 352 places, 484 transitions, 8241 flow [2024-06-27 22:10:31,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7849, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8241, PETRI_PLACES=352, PETRI_TRANSITIONS=484} [2024-06-27 22:10:31,483 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 310 predicate places. [2024-06-27 22:10:31,483 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 484 transitions, 8241 flow [2024-06-27 22:10:31,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:10:31,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:31,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:31,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 22:10:31,484 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:31,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:31,484 INFO L85 PathProgramCache]: Analyzing trace with hash -692526512, now seen corresponding path program 10 times [2024-06-27 22:10:31,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:31,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851365862] [2024-06-27 22:10:31,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:31,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:33,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:33,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:33,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851365862] [2024-06-27 22:10:33,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851365862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:33,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:33,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:10:33,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102132546] [2024-06-27 22:10:33,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:33,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:10:33,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:33,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:10:33,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:10:33,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:10:33,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 484 transitions, 8241 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:10:33,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:33,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:10:33,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:33,996 INFO L124 PetriNetUnfolderBase]: 1175/2121 cut-off events. [2024-06-27 22:10:33,996 INFO L125 PetriNetUnfolderBase]: For 264228/264228 co-relation queries the response was YES. [2024-06-27 22:10:34,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22705 conditions, 2121 events. 1175/2121 cut-off events. For 264228/264228 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 12180 event pairs, 128 based on Foata normal form. 1/1998 useless extension candidates. Maximal degree in co-relation 22536. Up to 1765 conditions per place. [2024-06-27 22:10:34,025 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 394 selfloop transitions, 105 changer transitions 0/508 dead transitions. [2024-06-27 22:10:34,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 508 transitions, 9479 flow [2024-06-27 22:10:34,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:10:34,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:10:34,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:10:34,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-06-27 22:10:34,026 INFO L175 Difference]: Start difference. First operand has 352 places, 484 transitions, 8241 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:10:34,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 508 transitions, 9479 flow [2024-06-27 22:10:35,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 508 transitions, 9169 flow, removed 56 selfloop flow, removed 9 redundant places. [2024-06-27 22:10:35,058 INFO L231 Difference]: Finished difference. Result has 354 places, 488 transitions, 8302 flow [2024-06-27 22:10:35,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7931, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8302, PETRI_PLACES=354, PETRI_TRANSITIONS=488} [2024-06-27 22:10:35,059 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 312 predicate places. [2024-06-27 22:10:35,059 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 488 transitions, 8302 flow [2024-06-27 22:10:35,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:10:35,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:35,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:35,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 22:10:35,059 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:35,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:35,059 INFO L85 PathProgramCache]: Analyzing trace with hash -692533022, now seen corresponding path program 11 times [2024-06-27 22:10:35,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:35,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134522052] [2024-06-27 22:10:35,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:35,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:36,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:36,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:36,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134522052] [2024-06-27 22:10:36,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134522052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:36,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:36,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:10:36,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455096632] [2024-06-27 22:10:36,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:36,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:10:36,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:36,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:10:36,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:10:36,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:10:36,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 488 transitions, 8302 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 22:10:36,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:36,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:10:36,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:37,693 INFO L124 PetriNetUnfolderBase]: 1183/2133 cut-off events. [2024-06-27 22:10:37,693 INFO L125 PetriNetUnfolderBase]: For 268225/268225 co-relation queries the response was YES. [2024-06-27 22:10:37,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22851 conditions, 2133 events. 1183/2133 cut-off events. For 268225/268225 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 12279 event pairs, 128 based on Foata normal form. 1/2008 useless extension candidates. Maximal degree in co-relation 22681. Up to 1769 conditions per place. [2024-06-27 22:10:37,719 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 394 selfloop transitions, 109 changer transitions 0/512 dead transitions. [2024-06-27 22:10:37,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 512 transitions, 9548 flow [2024-06-27 22:10:37,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:10:37,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:10:37,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:10:37,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-06-27 22:10:37,721 INFO L175 Difference]: Start difference. First operand has 354 places, 488 transitions, 8302 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:10:37,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 512 transitions, 9548 flow [2024-06-27 22:10:38,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 512 transitions, 9225 flow, removed 60 selfloop flow, removed 9 redundant places. [2024-06-27 22:10:38,918 INFO L231 Difference]: Finished difference. Result has 356 places, 492 transitions, 8358 flow [2024-06-27 22:10:38,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7979, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8358, PETRI_PLACES=356, PETRI_TRANSITIONS=492} [2024-06-27 22:10:38,919 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 314 predicate places. [2024-06-27 22:10:38,919 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 492 transitions, 8358 flow [2024-06-27 22:10:38,919 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 22:10:38,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:38,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:38,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 22:10:38,920 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:38,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:38,920 INFO L85 PathProgramCache]: Analyzing trace with hash -692295872, now seen corresponding path program 12 times [2024-06-27 22:10:38,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:38,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115869803] [2024-06-27 22:10:38,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:38,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:41,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:41,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:41,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115869803] [2024-06-27 22:10:41,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115869803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:41,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:41,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:10:41,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485335773] [2024-06-27 22:10:41,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:41,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:10:41,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:41,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:10:41,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:10:41,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:10:41,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 492 transitions, 8358 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:10:41,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:41,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:10:41,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:42,383 INFO L124 PetriNetUnfolderBase]: 1191/2146 cut-off events. [2024-06-27 22:10:42,383 INFO L125 PetriNetUnfolderBase]: For 272252/272252 co-relation queries the response was YES. [2024-06-27 22:10:42,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22987 conditions, 2146 events. 1191/2146 cut-off events. For 272252/272252 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 12334 event pairs, 128 based on Foata normal form. 1/2019 useless extension candidates. Maximal degree in co-relation 22816. Up to 1713 conditions per place. [2024-06-27 22:10:42,411 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 361 selfloop transitions, 146 changer transitions 0/516 dead transitions. [2024-06-27 22:10:42,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 516 transitions, 9616 flow [2024-06-27 22:10:42,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:10:42,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:10:42,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:10:42,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-27 22:10:42,412 INFO L175 Difference]: Start difference. First operand has 356 places, 492 transitions, 8358 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:10:42,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 516 transitions, 9616 flow [2024-06-27 22:10:43,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 516 transitions, 9299 flow, removed 53 selfloop flow, removed 9 redundant places. [2024-06-27 22:10:43,480 INFO L231 Difference]: Finished difference. Result has 358 places, 496 transitions, 8498 flow [2024-06-27 22:10:43,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8041, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8498, PETRI_PLACES=358, PETRI_TRANSITIONS=496} [2024-06-27 22:10:43,481 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 316 predicate places. [2024-06-27 22:10:43,481 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 496 transitions, 8498 flow [2024-06-27 22:10:43,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:10:43,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:43,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:43,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 22:10:43,481 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:43,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:43,481 INFO L85 PathProgramCache]: Analyzing trace with hash 387391902, now seen corresponding path program 13 times [2024-06-27 22:10:43,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:43,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672240910] [2024-06-27 22:10:43,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:43,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:43,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:45,075 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 22:10:45,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:45,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672240910] [2024-06-27 22:10:45,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672240910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:45,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:45,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:10:45,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142660300] [2024-06-27 22:10:45,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:45,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:10:45,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:45,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:10:45,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:10:45,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:10:45,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 496 transitions, 8498 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 22:10:45,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:45,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:10:45,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:46,104 INFO L124 PetriNetUnfolderBase]: 1197/2158 cut-off events. [2024-06-27 22:10:46,105 INFO L125 PetriNetUnfolderBase]: For 278493/278493 co-relation queries the response was YES. [2024-06-27 22:10:46,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23238 conditions, 2158 events. 1197/2158 cut-off events. For 278493/278493 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 12446 event pairs, 134 based on Foata normal form. 1/2030 useless extension candidates. Maximal degree in co-relation 23066. Up to 1702 conditions per place. [2024-06-27 22:10:46,135 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 353 selfloop transitions, 156 changer transitions 0/518 dead transitions. [2024-06-27 22:10:46,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 518 transitions, 9758 flow [2024-06-27 22:10:46,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:10:46,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:10:46,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 22:10:46,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43779904306220097 [2024-06-27 22:10:46,136 INFO L175 Difference]: Start difference. First operand has 358 places, 496 transitions, 8498 flow. Second operand 11 states and 183 transitions. [2024-06-27 22:10:46,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 518 transitions, 9758 flow [2024-06-27 22:10:47,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 518 transitions, 9349 flow, removed 62 selfloop flow, removed 9 redundant places. [2024-06-27 22:10:47,409 INFO L231 Difference]: Finished difference. Result has 360 places, 498 transitions, 8551 flow [2024-06-27 22:10:47,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8089, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8551, PETRI_PLACES=360, PETRI_TRANSITIONS=498} [2024-06-27 22:10:47,410 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 318 predicate places. [2024-06-27 22:10:47,410 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 498 transitions, 8551 flow [2024-06-27 22:10:47,410 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 22:10:47,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:47,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:47,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 22:10:47,410 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:47,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:47,411 INFO L85 PathProgramCache]: Analyzing trace with hash 387398660, now seen corresponding path program 5 times [2024-06-27 22:10:47,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:47,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876943335] [2024-06-27 22:10:47,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:47,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:49,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:49,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876943335] [2024-06-27 22:10:49,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876943335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:49,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:49,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:10:49,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108632400] [2024-06-27 22:10:49,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:49,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:10:49,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:49,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:10:49,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:10:49,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:10:49,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 498 transitions, 8551 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:49,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:49,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:10:49,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:50,302 INFO L124 PetriNetUnfolderBase]: 1001/1885 cut-off events. [2024-06-27 22:10:50,302 INFO L125 PetriNetUnfolderBase]: For 279786/279821 co-relation queries the response was YES. [2024-06-27 22:10:50,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21109 conditions, 1885 events. 1001/1885 cut-off events. For 279786/279821 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 11103 event pairs, 143 based on Foata normal form. 15/1744 useless extension candidates. Maximal degree in co-relation 20936. Up to 1442 conditions per place. [2024-06-27 22:10:50,331 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 342 selfloop transitions, 149 changer transitions 0/511 dead transitions. [2024-06-27 22:10:50,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 511 transitions, 9627 flow [2024-06-27 22:10:50,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:10:50,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:10:50,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 22:10:50,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4394736842105263 [2024-06-27 22:10:50,333 INFO L175 Difference]: Start difference. First operand has 360 places, 498 transitions, 8551 flow. Second operand 10 states and 167 transitions. [2024-06-27 22:10:50,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 511 transitions, 9627 flow [2024-06-27 22:10:51,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 511 transitions, 9187 flow, removed 66 selfloop flow, removed 9 redundant places. [2024-06-27 22:10:51,514 INFO L231 Difference]: Finished difference. Result has 361 places, 500 transitions, 8488 flow [2024-06-27 22:10:51,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8111, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8488, PETRI_PLACES=361, PETRI_TRANSITIONS=500} [2024-06-27 22:10:51,515 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 319 predicate places. [2024-06-27 22:10:51,515 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 500 transitions, 8488 flow [2024-06-27 22:10:51,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:51,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:51,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:51,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 22:10:51,515 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:51,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:51,515 INFO L85 PathProgramCache]: Analyzing trace with hash 395980452, now seen corresponding path program 1 times [2024-06-27 22:10:51,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:51,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348830736] [2024-06-27 22:10:51,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:51,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:53,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:53,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:53,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348830736] [2024-06-27 22:10:53,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348830736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:53,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:53,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:10:53,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114259294] [2024-06-27 22:10:53,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:53,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:10:53,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:53,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:10:53,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:10:53,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:10:53,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 500 transitions, 8488 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:53,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:53,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:10:53,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:54,579 INFO L124 PetriNetUnfolderBase]: 986/1896 cut-off events. [2024-06-27 22:10:54,579 INFO L125 PetriNetUnfolderBase]: For 292190/292228 co-relation queries the response was YES. [2024-06-27 22:10:54,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20979 conditions, 1896 events. 986/1896 cut-off events. For 292190/292228 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 11476 event pairs, 201 based on Foata normal form. 7/1743 useless extension candidates. Maximal degree in co-relation 20805. Up to 1484 conditions per place. [2024-06-27 22:10:54,607 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 422 selfloop transitions, 29 changer transitions 0/518 dead transitions. [2024-06-27 22:10:54,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 518 transitions, 9563 flow [2024-06-27 22:10:54,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:10:54,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:10:54,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 22:10:54,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45526315789473687 [2024-06-27 22:10:54,608 INFO L175 Difference]: Start difference. First operand has 361 places, 500 transitions, 8488 flow. Second operand 10 states and 173 transitions. [2024-06-27 22:10:54,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 518 transitions, 9563 flow [2024-06-27 22:10:55,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 518 transitions, 9206 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-27 22:10:55,672 INFO L231 Difference]: Finished difference. Result has 364 places, 503 transitions, 8249 flow [2024-06-27 22:10:55,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8131, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8249, PETRI_PLACES=364, PETRI_TRANSITIONS=503} [2024-06-27 22:10:55,672 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 322 predicate places. [2024-06-27 22:10:55,672 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 503 transitions, 8249 flow [2024-06-27 22:10:55,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:10:55,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:55,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:55,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 22:10:55,673 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:55,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:55,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1240940992, now seen corresponding path program 6 times [2024-06-27 22:10:55,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:55,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318404389] [2024-06-27 22:10:55,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:55,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:10:57,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:10:57,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:10:57,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318404389] [2024-06-27 22:10:57,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318404389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:10:57,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:10:57,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:10:57,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450320168] [2024-06-27 22:10:57,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:10:57,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:10:57,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:10:57,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:10:57,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:10:57,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:10:57,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 503 transitions, 8249 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 22:10:57,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:10:57,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:10:57,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:10:58,394 INFO L124 PetriNetUnfolderBase]: 1032/1951 cut-off events. [2024-06-27 22:10:58,395 INFO L125 PetriNetUnfolderBase]: For 304992/305027 co-relation queries the response was YES. [2024-06-27 22:10:58,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21701 conditions, 1951 events. 1032/1951 cut-off events. For 304992/305027 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 11601 event pairs, 147 based on Foata normal form. 16/1802 useless extension candidates. Maximal degree in co-relation 21525. Up to 1202 conditions per place. [2024-06-27 22:10:58,422 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 257 selfloop transitions, 247 changer transitions 0/524 dead transitions. [2024-06-27 22:10:58,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 524 transitions, 9733 flow [2024-06-27 22:10:58,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:10:58,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:10:58,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 22:10:58,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2024-06-27 22:10:58,424 INFO L175 Difference]: Start difference. First operand has 364 places, 503 transitions, 8249 flow. Second operand 9 states and 166 transitions. [2024-06-27 22:10:58,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 524 transitions, 9733 flow [2024-06-27 22:10:59,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 524 transitions, 9657 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 22:10:59,679 INFO L231 Difference]: Finished difference. Result has 366 places, 507 transitions, 8821 flow [2024-06-27 22:10:59,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8173, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8821, PETRI_PLACES=366, PETRI_TRANSITIONS=507} [2024-06-27 22:10:59,680 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 324 predicate places. [2024-06-27 22:10:59,680 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 507 transitions, 8821 flow [2024-06-27 22:10:59,680 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 22:10:59,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:10:59,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:10:59,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 22:10:59,680 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:10:59,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:10:59,681 INFO L85 PathProgramCache]: Analyzing trace with hash 387398412, now seen corresponding path program 14 times [2024-06-27 22:10:59,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:10:59,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738590492] [2024-06-27 22:10:59,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:10:59,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:10:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:01,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:01,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:01,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738590492] [2024-06-27 22:11:01,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738590492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:01,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:01,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:11:01,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944223800] [2024-06-27 22:11:01,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:01,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:11:01,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:01,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:11:01,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:11:01,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:11:01,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 507 transitions, 8821 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 22:11:01,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:01,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:11:01,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:02,644 INFO L124 PetriNetUnfolderBase]: 1251/2258 cut-off events. [2024-06-27 22:11:02,644 INFO L125 PetriNetUnfolderBase]: For 311357/311357 co-relation queries the response was YES. [2024-06-27 22:11:02,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24758 conditions, 2258 events. 1251/2258 cut-off events. For 311357/311357 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 13134 event pairs, 144 based on Foata normal form. 1/2125 useless extension candidates. Maximal degree in co-relation 24582. Up to 1778 conditions per place. [2024-06-27 22:11:02,678 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 360 selfloop transitions, 160 changer transitions 0/529 dead transitions. [2024-06-27 22:11:02,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 529 transitions, 10107 flow [2024-06-27 22:11:02,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:11:02,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:11:02,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:11:02,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-06-27 22:11:02,679 INFO L175 Difference]: Start difference. First operand has 366 places, 507 transitions, 8821 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:11:02,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 529 transitions, 10107 flow [2024-06-27 22:11:04,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 529 transitions, 9733 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-27 22:11:04,175 INFO L231 Difference]: Finished difference. Result has 372 places, 509 transitions, 8921 flow [2024-06-27 22:11:04,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8447, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8921, PETRI_PLACES=372, PETRI_TRANSITIONS=509} [2024-06-27 22:11:04,175 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 330 predicate places. [2024-06-27 22:11:04,175 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 509 transitions, 8921 flow [2024-06-27 22:11:04,176 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 22:11:04,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:04,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:04,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 22:11:04,176 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:04,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:04,177 INFO L85 PathProgramCache]: Analyzing trace with hash 387637670, now seen corresponding path program 7 times [2024-06-27 22:11:04,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:04,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109750373] [2024-06-27 22:11:04,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:04,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:05,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:05,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:05,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109750373] [2024-06-27 22:11:05,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109750373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:05,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:05,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:11:05,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951916277] [2024-06-27 22:11:05,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:05,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:11:05,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:05,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:11:05,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:11:05,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:11:05,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 509 transitions, 8921 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:05,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:05,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:11:05,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:06,768 INFO L124 PetriNetUnfolderBase]: 1066/2002 cut-off events. [2024-06-27 22:11:06,768 INFO L125 PetriNetUnfolderBase]: For 338726/338759 co-relation queries the response was YES. [2024-06-27 22:11:06,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23624 conditions, 2002 events. 1066/2002 cut-off events. For 338726/338759 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 11884 event pairs, 152 based on Foata normal form. 15/1850 useless extension candidates. Maximal degree in co-relation 23445. Up to 1464 conditions per place. [2024-06-27 22:11:06,796 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 324 selfloop transitions, 185 changer transitions 0/529 dead transitions. [2024-06-27 22:11:06,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 529 transitions, 10791 flow [2024-06-27 22:11:06,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:11:06,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:11:06,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 22:11:06,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-06-27 22:11:06,797 INFO L175 Difference]: Start difference. First operand has 372 places, 509 transitions, 8921 flow. Second operand 10 states and 175 transitions. [2024-06-27 22:11:06,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 529 transitions, 10791 flow [2024-06-27 22:11:08,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 529 transitions, 10339 flow, removed 68 selfloop flow, removed 9 redundant places. [2024-06-27 22:11:08,126 INFO L231 Difference]: Finished difference. Result has 374 places, 516 transitions, 9242 flow [2024-06-27 22:11:08,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8469, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9242, PETRI_PLACES=374, PETRI_TRANSITIONS=516} [2024-06-27 22:11:08,127 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 332 predicate places. [2024-06-27 22:11:08,127 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 516 transitions, 9242 flow [2024-06-27 22:11:08,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:08,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:08,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:08,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 22:11:08,128 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:08,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:08,128 INFO L85 PathProgramCache]: Analyzing trace with hash 387637980, now seen corresponding path program 1 times [2024-06-27 22:11:08,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:08,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151793198] [2024-06-27 22:11:08,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:08,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:10,075 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 22:11:10,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:10,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151793198] [2024-06-27 22:11:10,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151793198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:10,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:10,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:11:10,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079011818] [2024-06-27 22:11:10,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:10,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:11:10,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:10,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:11:10,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:11:10,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:11:10,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 516 transitions, 9242 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:10,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:10,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:11:10,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:11,008 INFO L124 PetriNetUnfolderBase]: 1055/1995 cut-off events. [2024-06-27 22:11:11,009 INFO L125 PetriNetUnfolderBase]: For 333364/333394 co-relation queries the response was YES. [2024-06-27 22:11:11,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23497 conditions, 1995 events. 1055/1995 cut-off events. For 333364/333394 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 11953 event pairs, 181 based on Foata normal form. 4/1835 useless extension candidates. Maximal degree in co-relation 23316. Up to 1667 conditions per place. [2024-06-27 22:11:11,041 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 452 selfloop transitions, 55 changer transitions 0/527 dead transitions. [2024-06-27 22:11:11,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 527 transitions, 10282 flow [2024-06-27 22:11:11,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:11:11,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:11:11,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 22:11:11,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42894736842105263 [2024-06-27 22:11:11,042 INFO L175 Difference]: Start difference. First operand has 374 places, 516 transitions, 9242 flow. Second operand 10 states and 163 transitions. [2024-06-27 22:11:11,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 527 transitions, 10282 flow [2024-06-27 22:11:12,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 527 transitions, 9967 flow, removed 59 selfloop flow, removed 5 redundant places. [2024-06-27 22:11:12,396 INFO L231 Difference]: Finished difference. Result has 379 places, 516 transitions, 9042 flow [2024-06-27 22:11:12,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8927, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9042, PETRI_PLACES=379, PETRI_TRANSITIONS=516} [2024-06-27 22:11:12,396 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 337 predicate places. [2024-06-27 22:11:12,396 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 516 transitions, 9042 flow [2024-06-27 22:11:12,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:12,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:12,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:12,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 22:11:12,397 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:12,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:12,397 INFO L85 PathProgramCache]: Analyzing trace with hash 395672870, now seen corresponding path program 8 times [2024-06-27 22:11:12,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:12,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877579067] [2024-06-27 22:11:12,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:12,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:14,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:14,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:14,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877579067] [2024-06-27 22:11:14,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877579067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:14,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:14,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:11:14,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763836784] [2024-06-27 22:11:14,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:14,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:11:14,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:14,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:11:14,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:11:14,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:11:14,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 516 transitions, 9042 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 22:11:14,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:14,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:11:14,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:15,001 INFO L124 PetriNetUnfolderBase]: 1078/2026 cut-off events. [2024-06-27 22:11:15,001 INFO L125 PetriNetUnfolderBase]: For 350675/350710 co-relation queries the response was YES. [2024-06-27 22:11:15,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23901 conditions, 2026 events. 1078/2026 cut-off events. For 350675/350710 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 12079 event pairs, 147 based on Foata normal form. 16/1868 useless extension candidates. Maximal degree in co-relation 23718. Up to 1259 conditions per place. [2024-06-27 22:11:15,032 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 300 selfloop transitions, 218 changer transitions 0/538 dead transitions. [2024-06-27 22:11:15,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 538 transitions, 10811 flow [2024-06-27 22:11:15,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:11:15,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:11:15,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 22:11:15,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-27 22:11:15,033 INFO L175 Difference]: Start difference. First operand has 379 places, 516 transitions, 9042 flow. Second operand 9 states and 168 transitions. [2024-06-27 22:11:15,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 538 transitions, 10811 flow [2024-06-27 22:11:16,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 538 transitions, 10575 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 22:11:16,402 INFO L231 Difference]: Finished difference. Result has 376 places, 520 transitions, 9401 flow [2024-06-27 22:11:16,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8806, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9401, PETRI_PLACES=376, PETRI_TRANSITIONS=520} [2024-06-27 22:11:16,403 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 334 predicate places. [2024-06-27 22:11:16,403 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 520 transitions, 9401 flow [2024-06-27 22:11:16,403 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 22:11:16,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:16,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:16,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 22:11:16,403 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:16,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:16,404 INFO L85 PathProgramCache]: Analyzing trace with hash 387629052, now seen corresponding path program 15 times [2024-06-27 22:11:16,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:16,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846627174] [2024-06-27 22:11:16,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:16,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:18,476 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 22:11:18,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:18,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846627174] [2024-06-27 22:11:18,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846627174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:18,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:18,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:11:18,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098729893] [2024-06-27 22:11:18,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:18,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:11:18,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:18,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:11:18,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:11:18,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:11:18,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 520 transitions, 9401 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:11:18,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:18,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:11:18,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:19,745 INFO L124 PetriNetUnfolderBase]: 1302/2339 cut-off events. [2024-06-27 22:11:19,745 INFO L125 PetriNetUnfolderBase]: For 356703/356703 co-relation queries the response was YES. [2024-06-27 22:11:19,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26896 conditions, 2339 events. 1302/2339 cut-off events. For 356703/356703 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 13671 event pairs, 145 based on Foata normal form. 1/2201 useless extension candidates. Maximal degree in co-relation 26715. Up to 1838 conditions per place. [2024-06-27 22:11:19,781 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 367 selfloop transitions, 166 changer transitions 0/542 dead transitions. [2024-06-27 22:11:19,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 542 transitions, 10721 flow [2024-06-27 22:11:19,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:11:19,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:11:19,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:11:19,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-27 22:11:19,782 INFO L175 Difference]: Start difference. First operand has 376 places, 520 transitions, 9401 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:11:19,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 542 transitions, 10721 flow [2024-06-27 22:11:21,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 542 transitions, 10354 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-27 22:11:21,295 INFO L231 Difference]: Finished difference. Result has 382 places, 522 transitions, 9528 flow [2024-06-27 22:11:21,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9034, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9528, PETRI_PLACES=382, PETRI_TRANSITIONS=522} [2024-06-27 22:11:21,295 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 340 predicate places. [2024-06-27 22:11:21,295 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 522 transitions, 9528 flow [2024-06-27 22:11:21,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:11:21,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:21,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:21,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 22:11:21,296 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:21,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:21,296 INFO L85 PathProgramCache]: Analyzing trace with hash 387629300, now seen corresponding path program 9 times [2024-06-27 22:11:21,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:21,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817445965] [2024-06-27 22:11:21,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:21,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:22,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:22,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:22,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817445965] [2024-06-27 22:11:22,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817445965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:22,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:22,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:11:22,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923773949] [2024-06-27 22:11:22,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:22,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:11:22,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:22,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:11:22,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:11:23,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:11:23,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 522 transitions, 9528 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:23,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:23,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:11:23,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:23,918 INFO L124 PetriNetUnfolderBase]: 1082/2035 cut-off events. [2024-06-27 22:11:23,918 INFO L125 PetriNetUnfolderBase]: For 352125/352160 co-relation queries the response was YES. [2024-06-27 22:11:23,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24129 conditions, 2035 events. 1082/2035 cut-off events. For 352125/352160 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 12133 event pairs, 149 based on Foata normal form. 15/1874 useless extension candidates. Maximal degree in co-relation 23946. Up to 1545 conditions per place. [2024-06-27 22:11:23,951 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 356 selfloop transitions, 158 changer transitions 0/534 dead transitions. [2024-06-27 22:11:23,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 534 transitions, 10600 flow [2024-06-27 22:11:23,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:11:23,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:11:23,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 22:11:23,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 22:11:23,952 INFO L175 Difference]: Start difference. First operand has 382 places, 522 transitions, 9528 flow. Second operand 10 states and 171 transitions. [2024-06-27 22:11:23,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 534 transitions, 10600 flow [2024-06-27 22:11:25,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 534 transitions, 10128 flow, removed 72 selfloop flow, removed 9 redundant places. [2024-06-27 22:11:25,288 INFO L231 Difference]: Finished difference. Result has 383 places, 523 transitions, 9399 flow [2024-06-27 22:11:25,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9056, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9399, PETRI_PLACES=383, PETRI_TRANSITIONS=523} [2024-06-27 22:11:25,288 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 341 predicate places. [2024-06-27 22:11:25,288 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 523 transitions, 9399 flow [2024-06-27 22:11:25,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:11:25,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:25,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:25,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 22:11:25,289 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:25,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:25,289 INFO L85 PathProgramCache]: Analyzing trace with hash 395672622, now seen corresponding path program 16 times [2024-06-27 22:11:25,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:25,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030474241] [2024-06-27 22:11:25,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:25,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:27,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:27,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:27,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030474241] [2024-06-27 22:11:27,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030474241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:27,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:27,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:11:27,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848268520] [2024-06-27 22:11:27,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:27,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:11:27,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:27,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:11:27,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:11:27,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:11:27,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 523 transitions, 9399 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:11:27,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:27,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:11:27,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:28,383 INFO L124 PetriNetUnfolderBase]: 1306/2348 cut-off events. [2024-06-27 22:11:28,384 INFO L125 PetriNetUnfolderBase]: For 357419/357419 co-relation queries the response was YES. [2024-06-27 22:11:28,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26659 conditions, 2348 events. 1306/2348 cut-off events. For 357419/357419 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 13732 event pairs, 144 based on Foata normal form. 1/2209 useless extension candidates. Maximal degree in co-relation 26475. Up to 1651 conditions per place. [2024-06-27 22:11:28,414 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 287 selfloop transitions, 249 changer transitions 0/545 dead transitions. [2024-06-27 22:11:28,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 545 transitions, 10729 flow [2024-06-27 22:11:28,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:11:28,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:11:28,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:11:28,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4449760765550239 [2024-06-27 22:11:28,415 INFO L175 Difference]: Start difference. First operand has 383 places, 523 transitions, 9399 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:11:28,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 545 transitions, 10729 flow [2024-06-27 22:11:29,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 545 transitions, 10358 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-27 22:11:29,987 INFO L231 Difference]: Finished difference. Result has 386 places, 525 transitions, 9692 flow [2024-06-27 22:11:29,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9028, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9692, PETRI_PLACES=386, PETRI_TRANSITIONS=525} [2024-06-27 22:11:29,988 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 344 predicate places. [2024-06-27 22:11:29,988 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 525 transitions, 9692 flow [2024-06-27 22:11:29,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:11:29,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:29,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:29,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 22:11:29,989 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:29,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:29,989 INFO L85 PathProgramCache]: Analyzing trace with hash 395681240, now seen corresponding path program 10 times [2024-06-27 22:11:29,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:29,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743657793] [2024-06-27 22:11:29,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:29,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:31,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:31,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:31,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743657793] [2024-06-27 22:11:31,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743657793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:31,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:31,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:11:31,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578799249] [2024-06-27 22:11:31,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:31,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:11:31,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:31,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:11:31,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:11:31,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:11:31,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 525 transitions, 9692 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 22:11:31,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:31,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:11:31,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:32,596 INFO L124 PetriNetUnfolderBase]: 1086/2038 cut-off events. [2024-06-27 22:11:32,596 INFO L125 PetriNetUnfolderBase]: For 351023/351056 co-relation queries the response was YES. [2024-06-27 22:11:32,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23994 conditions, 2038 events. 1086/2038 cut-off events. For 351023/351056 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 12139 event pairs, 150 based on Foata normal form. 16/1880 useless extension candidates. Maximal degree in co-relation 23809. Up to 1274 conditions per place. [2024-06-27 22:11:32,629 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 307 selfloop transitions, 216 changer transitions 0/543 dead transitions. [2024-06-27 22:11:32,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 543 transitions, 11110 flow [2024-06-27 22:11:32,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:11:32,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:11:32,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 22:11:32,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-27 22:11:32,630 INFO L175 Difference]: Start difference. First operand has 386 places, 525 transitions, 9692 flow. Second operand 9 states and 168 transitions. [2024-06-27 22:11:32,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 543 transitions, 11110 flow [2024-06-27 22:11:34,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 543 transitions, 10424 flow, removed 96 selfloop flow, removed 9 redundant places. [2024-06-27 22:11:34,019 INFO L231 Difference]: Finished difference. Result has 386 places, 525 transitions, 9444 flow [2024-06-27 22:11:34,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9006, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9444, PETRI_PLACES=386, PETRI_TRANSITIONS=525} [2024-06-27 22:11:34,020 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 344 predicate places. [2024-06-27 22:11:34,020 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 525 transitions, 9444 flow [2024-06-27 22:11:34,020 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 22:11:34,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:34,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:34,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 22:11:34,020 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:34,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:34,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1914827960, now seen corresponding path program 17 times [2024-06-27 22:11:34,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:34,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845176372] [2024-06-27 22:11:34,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:34,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:35,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:35,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:35,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845176372] [2024-06-27 22:11:35,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845176372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:35,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:35,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:11:35,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025321158] [2024-06-27 22:11:35,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:35,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:11:35,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:35,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:11:35,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:11:35,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:11:35,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 525 transitions, 9444 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:11:35,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:35,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:11:35,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:36,876 INFO L124 PetriNetUnfolderBase]: 1305/2348 cut-off events. [2024-06-27 22:11:36,876 INFO L125 PetriNetUnfolderBase]: For 338957/338957 co-relation queries the response was YES. [2024-06-27 22:11:36,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26084 conditions, 2348 events. 1305/2348 cut-off events. For 338957/338957 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 13783 event pairs, 148 based on Foata normal form. 1/2202 useless extension candidates. Maximal degree in co-relation 25899. Up to 1980 conditions per place. [2024-06-27 22:11:36,912 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 440 selfloop transitions, 98 changer transitions 0/547 dead transitions. [2024-06-27 22:11:36,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 547 transitions, 10696 flow [2024-06-27 22:11:36,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:11:36,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:11:36,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 22:11:36,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430622009569378 [2024-06-27 22:11:36,914 INFO L175 Difference]: Start difference. First operand has 386 places, 525 transitions, 9444 flow. Second operand 11 states and 180 transitions. [2024-06-27 22:11:36,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 547 transitions, 10696 flow [2024-06-27 22:11:38,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 547 transitions, 10185 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-27 22:11:38,565 INFO L231 Difference]: Finished difference. Result has 389 places, 531 transitions, 9259 flow [2024-06-27 22:11:38,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8933, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9259, PETRI_PLACES=389, PETRI_TRANSITIONS=531} [2024-06-27 22:11:38,565 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 347 predicate places. [2024-06-27 22:11:38,565 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 531 transitions, 9259 flow [2024-06-27 22:11:38,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:11:38,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:38,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:38,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 22:11:38,566 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:38,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:38,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1914834470, now seen corresponding path program 18 times [2024-06-27 22:11:38,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:38,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649926329] [2024-06-27 22:11:38,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:38,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:40,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:40,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:40,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649926329] [2024-06-27 22:11:40,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649926329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:40,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:40,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:11:40,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485681017] [2024-06-27 22:11:40,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:40,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:11:40,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:40,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:11:40,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:11:40,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:11:40,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 531 transitions, 9259 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:11:40,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:40,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:11:40,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:41,759 INFO L124 PetriNetUnfolderBase]: 1317/2372 cut-off events. [2024-06-27 22:11:41,759 INFO L125 PetriNetUnfolderBase]: For 345745/345745 co-relation queries the response was YES. [2024-06-27 22:11:41,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26051 conditions, 2372 events. 1317/2372 cut-off events. For 345745/345745 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 14032 event pairs, 148 based on Foata normal form. 1/2222 useless extension candidates. Maximal degree in co-relation 25864. Up to 1973 conditions per place. [2024-06-27 22:11:41,814 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 432 selfloop transitions, 114 changer transitions 0/555 dead transitions. [2024-06-27 22:11:41,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 555 transitions, 10643 flow [2024-06-27 22:11:41,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:11:41,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:11:41,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:11:41,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43301435406698563 [2024-06-27 22:11:41,816 INFO L175 Difference]: Start difference. First operand has 389 places, 531 transitions, 9259 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:11:41,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 555 transitions, 10643 flow [2024-06-27 22:11:43,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 555 transitions, 10356 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-27 22:11:43,563 INFO L231 Difference]: Finished difference. Result has 390 places, 539 transitions, 9450 flow [2024-06-27 22:11:43,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8972, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9450, PETRI_PLACES=390, PETRI_TRANSITIONS=539} [2024-06-27 22:11:43,564 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 348 predicate places. [2024-06-27 22:11:43,564 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 539 transitions, 9450 flow [2024-06-27 22:11:43,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:11:43,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:43,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:43,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 22:11:43,565 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:43,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:43,565 INFO L85 PathProgramCache]: Analyzing trace with hash 2059612220, now seen corresponding path program 19 times [2024-06-27 22:11:43,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:43,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302769935] [2024-06-27 22:11:43,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:43,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:45,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:45,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:45,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302769935] [2024-06-27 22:11:45,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302769935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:45,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:45,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:11:45,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671939815] [2024-06-27 22:11:45,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:45,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:11:45,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:45,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:11:45,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:11:45,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:11:45,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 539 transitions, 9450 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 22:11:45,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:45,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:11:45,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:46,325 INFO L124 PetriNetUnfolderBase]: 1319/2372 cut-off events. [2024-06-27 22:11:46,325 INFO L125 PetriNetUnfolderBase]: For 342749/342749 co-relation queries the response was YES. [2024-06-27 22:11:46,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25958 conditions, 2372 events. 1319/2372 cut-off events. For 342749/342749 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 13970 event pairs, 148 based on Foata normal form. 1/2220 useless extension candidates. Maximal degree in co-relation 25770. Up to 1981 conditions per place. [2024-06-27 22:11:46,363 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 443 selfloop transitions, 107 changer transitions 0/559 dead transitions. [2024-06-27 22:11:46,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 559 transitions, 10674 flow [2024-06-27 22:11:46,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:11:46,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:11:46,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 22:11:46,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 22:11:46,365 INFO L175 Difference]: Start difference. First operand has 390 places, 539 transitions, 9450 flow. Second operand 10 states and 171 transitions. [2024-06-27 22:11:46,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 559 transitions, 10674 flow [2024-06-27 22:11:48,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 559 transitions, 10248 flow, removed 105 selfloop flow, removed 9 redundant places. [2024-06-27 22:11:48,110 INFO L231 Difference]: Finished difference. Result has 391 places, 543 transitions, 9303 flow [2024-06-27 22:11:48,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9024, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9303, PETRI_PLACES=391, PETRI_TRANSITIONS=543} [2024-06-27 22:11:48,111 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 349 predicate places. [2024-06-27 22:11:48,111 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 543 transitions, 9303 flow [2024-06-27 22:11:48,111 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 22:11:48,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:48,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:48,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 22:11:48,111 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:48,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:48,111 INFO L85 PathProgramCache]: Analyzing trace with hash 2059618730, now seen corresponding path program 20 times [2024-06-27 22:11:48,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:48,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547312] [2024-06-27 22:11:48,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:48,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:50,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:50,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:50,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547312] [2024-06-27 22:11:50,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:50,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:50,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:11:50,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824157477] [2024-06-27 22:11:50,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:50,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:11:50,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:50,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:11:50,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:11:50,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:11:50,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 543 transitions, 9303 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:11:50,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:50,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:11:50,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:51,648 INFO L124 PetriNetUnfolderBase]: 1329/2392 cut-off events. [2024-06-27 22:11:51,648 INFO L125 PetriNetUnfolderBase]: For 345314/345314 co-relation queries the response was YES. [2024-06-27 22:11:51,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25975 conditions, 2392 events. 1329/2392 cut-off events. For 345314/345314 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 14132 event pairs, 148 based on Foata normal form. 1/2237 useless extension candidates. Maximal degree in co-relation 25786. Up to 1982 conditions per place. [2024-06-27 22:11:51,688 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 440 selfloop transitions, 116 changer transitions 0/565 dead transitions. [2024-06-27 22:11:51,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 565 transitions, 10689 flow [2024-06-27 22:11:51,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:11:51,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:11:51,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 22:11:51,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43779904306220097 [2024-06-27 22:11:51,689 INFO L175 Difference]: Start difference. First operand has 391 places, 543 transitions, 9303 flow. Second operand 11 states and 183 transitions. [2024-06-27 22:11:51,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 565 transitions, 10689 flow [2024-06-27 22:11:53,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 565 transitions, 10218 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-27 22:11:53,274 INFO L231 Difference]: Finished difference. Result has 392 places, 549 transitions, 9283 flow [2024-06-27 22:11:53,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8832, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9283, PETRI_PLACES=392, PETRI_TRANSITIONS=549} [2024-06-27 22:11:53,274 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 350 predicate places. [2024-06-27 22:11:53,275 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 549 transitions, 9283 flow [2024-06-27 22:11:53,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:11:53,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:53,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:53,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 22:11:53,275 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:53,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:53,276 INFO L85 PathProgramCache]: Analyzing trace with hash 2059849370, now seen corresponding path program 21 times [2024-06-27 22:11:53,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:53,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193261280] [2024-06-27 22:11:53,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:53,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:11:55,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:11:55,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:11:55,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193261280] [2024-06-27 22:11:55,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193261280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:11:55,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:11:55,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:11:55,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147429608] [2024-06-27 22:11:55,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:11:55,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:11:55,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:11:55,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:11:55,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:11:55,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:11:55,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 549 transitions, 9283 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:11:55,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:11:55,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:11:55,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:11:56,469 INFO L124 PetriNetUnfolderBase]: 1339/2412 cut-off events. [2024-06-27 22:11:56,470 INFO L125 PetriNetUnfolderBase]: For 354532/354532 co-relation queries the response was YES. [2024-06-27 22:11:56,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26153 conditions, 2412 events. 1339/2412 cut-off events. For 354532/354532 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 14306 event pairs, 149 based on Foata normal form. 1/2254 useless extension candidates. Maximal degree in co-relation 25964. Up to 1943 conditions per place. [2024-06-27 22:11:56,507 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 410 selfloop transitions, 152 changer transitions 0/571 dead transitions. [2024-06-27 22:11:56,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 571 transitions, 10685 flow [2024-06-27 22:11:56,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:11:56,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:11:56,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 22:11:56,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43779904306220097 [2024-06-27 22:11:56,509 INFO L175 Difference]: Start difference. First operand has 392 places, 549 transitions, 9283 flow. Second operand 11 states and 183 transitions. [2024-06-27 22:11:56,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 571 transitions, 10685 flow [2024-06-27 22:11:58,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 571 transitions, 10314 flow, removed 74 selfloop flow, removed 9 redundant places. [2024-06-27 22:11:58,338 INFO L231 Difference]: Finished difference. Result has 394 places, 555 transitions, 9439 flow [2024-06-27 22:11:58,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8912, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9439, PETRI_PLACES=394, PETRI_TRANSITIONS=555} [2024-06-27 22:11:58,339 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 352 predicate places. [2024-06-27 22:11:58,339 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 555 transitions, 9439 flow [2024-06-27 22:11:58,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:11:58,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:11:58,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:11:58,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 22:11:58,340 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:11:58,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:11:58,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1147149432, now seen corresponding path program 22 times [2024-06-27 22:11:58,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:11:58,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667450102] [2024-06-27 22:11:58,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:11:58,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:11:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:00,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:00,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:00,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667450102] [2024-06-27 22:12:00,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667450102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:00,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:00,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:12:00,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762694843] [2024-06-27 22:12:00,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:00,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:12:00,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:00,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:12:00,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:12:00,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:12:00,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 555 transitions, 9439 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:12:00,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:00,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:12:00,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:01,521 INFO L124 PetriNetUnfolderBase]: 1361/2454 cut-off events. [2024-06-27 22:12:01,521 INFO L125 PetriNetUnfolderBase]: For 374938/374938 co-relation queries the response was YES. [2024-06-27 22:12:01,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26987 conditions, 2454 events. 1361/2454 cut-off events. For 374938/374938 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 14608 event pairs, 149 based on Foata normal form. 1/2290 useless extension candidates. Maximal degree in co-relation 26797. Up to 1892 conditions per place. [2024-06-27 22:12:01,559 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 389 selfloop transitions, 186 changer transitions 0/584 dead transitions. [2024-06-27 22:12:01,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 584 transitions, 11327 flow [2024-06-27 22:12:01,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:12:01,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:12:01,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:12:01,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4449760765550239 [2024-06-27 22:12:01,560 INFO L175 Difference]: Start difference. First operand has 394 places, 555 transitions, 9439 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:12:01,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 584 transitions, 11327 flow [2024-06-27 22:12:03,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 584 transitions, 10880 flow, removed 76 selfloop flow, removed 9 redundant places. [2024-06-27 22:12:03,288 INFO L231 Difference]: Finished difference. Result has 397 places, 567 transitions, 9891 flow [2024-06-27 22:12:03,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8992, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9891, PETRI_PLACES=397, PETRI_TRANSITIONS=567} [2024-06-27 22:12:03,289 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 355 predicate places. [2024-06-27 22:12:03,289 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 567 transitions, 9891 flow [2024-06-27 22:12:03,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:12:03,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:03,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:03,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 22:12:03,289 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:03,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:03,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1155193002, now seen corresponding path program 23 times [2024-06-27 22:12:03,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:03,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318539058] [2024-06-27 22:12:03,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:03,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:05,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:05,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:05,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318539058] [2024-06-27 22:12:05,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318539058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:05,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:05,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:12:05,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629932223] [2024-06-27 22:12:05,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:05,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:12:05,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:05,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:12:05,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:12:05,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:12:05,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 567 transitions, 9891 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 22:12:05,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:05,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:12:05,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:06,409 INFO L124 PetriNetUnfolderBase]: 1367/2466 cut-off events. [2024-06-27 22:12:06,409 INFO L125 PetriNetUnfolderBase]: For 381914/381914 co-relation queries the response was YES. [2024-06-27 22:12:06,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27404 conditions, 2466 events. 1367/2466 cut-off events. For 381914/381914 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 14715 event pairs, 149 based on Foata normal form. 1/2301 useless extension candidates. Maximal degree in co-relation 27212. Up to 1998 conditions per place. [2024-06-27 22:12:06,448 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 450 selfloop transitions, 127 changer transitions 0/586 dead transitions. [2024-06-27 22:12:06,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 586 transitions, 11565 flow [2024-06-27 22:12:06,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:12:06,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:12:06,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 22:12:06,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46578947368421053 [2024-06-27 22:12:06,449 INFO L175 Difference]: Start difference. First operand has 397 places, 567 transitions, 9891 flow. Second operand 10 states and 177 transitions. [2024-06-27 22:12:06,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 586 transitions, 11565 flow [2024-06-27 22:12:08,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 586 transitions, 11253 flow, removed 88 selfloop flow, removed 7 redundant places. [2024-06-27 22:12:08,173 INFO L231 Difference]: Finished difference. Result has 400 places, 569 transitions, 10019 flow [2024-06-27 22:12:08,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9587, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10019, PETRI_PLACES=400, PETRI_TRANSITIONS=569} [2024-06-27 22:12:08,174 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 358 predicate places. [2024-06-27 22:12:08,174 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 569 transitions, 10019 flow [2024-06-27 22:12:08,174 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 22:12:08,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:08,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:08,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 22:12:08,174 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:08,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:08,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1155430152, now seen corresponding path program 24 times [2024-06-27 22:12:08,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:08,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114203173] [2024-06-27 22:12:08,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:08,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:09,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:09,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:09,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114203173] [2024-06-27 22:12:09,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114203173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:09,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:09,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:12:09,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703341442] [2024-06-27 22:12:09,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:09,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:12:09,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:09,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:12:09,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:12:09,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:12:09,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 569 transitions, 10019 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 22:12:09,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:09,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:12:09,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:10,911 INFO L124 PetriNetUnfolderBase]: 1365/2463 cut-off events. [2024-06-27 22:12:10,911 INFO L125 PetriNetUnfolderBase]: For 371360/371360 co-relation queries the response was YES. [2024-06-27 22:12:10,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27161 conditions, 2463 events. 1365/2463 cut-off events. For 371360/371360 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 14707 event pairs, 149 based on Foata normal form. 1/2298 useless extension candidates. Maximal degree in co-relation 26967. Up to 2027 conditions per place. [2024-06-27 22:12:10,953 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 463 selfloop transitions, 113 changer transitions 0/585 dead transitions. [2024-06-27 22:12:10,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 585 transitions, 11255 flow [2024-06-27 22:12:10,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:12:10,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:12:10,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:12:10,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45263157894736844 [2024-06-27 22:12:10,954 INFO L175 Difference]: Start difference. First operand has 400 places, 569 transitions, 10019 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:12:10,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 585 transitions, 11255 flow [2024-06-27 22:12:12,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 585 transitions, 10658 flow, removed 133 selfloop flow, removed 8 redundant places. [2024-06-27 22:12:12,747 INFO L231 Difference]: Finished difference. Result has 402 places, 569 transitions, 9656 flow [2024-06-27 22:12:12,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9422, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9656, PETRI_PLACES=402, PETRI_TRANSITIONS=569} [2024-06-27 22:12:12,748 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 360 predicate places. [2024-06-27 22:12:12,748 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 569 transitions, 9656 flow [2024-06-27 22:12:12,748 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 22:12:12,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:12,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:12,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 22:12:12,748 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:12,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:12,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1155423642, now seen corresponding path program 25 times [2024-06-27 22:12:12,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:12,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722090304] [2024-06-27 22:12:12,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:12,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:14,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:14,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:14,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722090304] [2024-06-27 22:12:14,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722090304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:14,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:14,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:12:14,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574041482] [2024-06-27 22:12:14,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:14,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:12:14,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:14,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:12:14,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:12:15,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:12:15,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 569 transitions, 9656 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:12:15,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:15,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:12:15,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:16,161 INFO L124 PetriNetUnfolderBase]: 1363/2460 cut-off events. [2024-06-27 22:12:16,161 INFO L125 PetriNetUnfolderBase]: For 357070/357070 co-relation queries the response was YES. [2024-06-27 22:12:16,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26450 conditions, 2460 events. 1363/2460 cut-off events. For 357070/357070 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 14704 event pairs, 149 based on Foata normal form. 1/2295 useless extension candidates. Maximal degree in co-relation 26255. Up to 2039 conditions per place. [2024-06-27 22:12:16,194 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 470 selfloop transitions, 106 changer transitions 0/585 dead transitions. [2024-06-27 22:12:16,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 585 transitions, 10892 flow [2024-06-27 22:12:16,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:12:16,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:12:16,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 22:12:16,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4354066985645933 [2024-06-27 22:12:16,195 INFO L175 Difference]: Start difference. First operand has 402 places, 569 transitions, 9656 flow. Second operand 11 states and 182 transitions. [2024-06-27 22:12:16,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 585 transitions, 10892 flow [2024-06-27 22:12:18,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 585 transitions, 10504 flow, removed 69 selfloop flow, removed 9 redundant places. [2024-06-27 22:12:18,042 INFO L231 Difference]: Finished difference. Result has 404 places, 569 transitions, 9488 flow [2024-06-27 22:12:18,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9268, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9488, PETRI_PLACES=404, PETRI_TRANSITIONS=569} [2024-06-27 22:12:18,043 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 362 predicate places. [2024-06-27 22:12:18,043 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 569 transitions, 9488 flow [2024-06-27 22:12:18,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:12:18,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:18,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:18,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 22:12:18,044 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:18,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:18,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1494488514, now seen corresponding path program 2 times [2024-06-27 22:12:18,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:18,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774765769] [2024-06-27 22:12:18,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:18,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:20,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:20,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:20,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774765769] [2024-06-27 22:12:20,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774765769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:20,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:20,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:12:20,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963966566] [2024-06-27 22:12:20,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:20,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:12:20,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:20,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:12:20,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:12:20,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:12:20,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 569 transitions, 9488 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 22:12:20,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:20,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:12:20,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:21,695 INFO L124 PetriNetUnfolderBase]: 1337/2473 cut-off events. [2024-06-27 22:12:21,695 INFO L125 PetriNetUnfolderBase]: For 398980/398993 co-relation queries the response was YES. [2024-06-27 22:12:21,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26595 conditions, 2473 events. 1337/2473 cut-off events. For 398980/398993 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 15272 event pairs, 331 based on Foata normal form. 7/2309 useless extension candidates. Maximal degree in co-relation 26399. Up to 1975 conditions per place. [2024-06-27 22:12:21,735 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 523 selfloop transitions, 21 changer transitions 0/600 dead transitions. [2024-06-27 22:12:21,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 600 transitions, 11202 flow [2024-06-27 22:12:21,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:12:21,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:12:21,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 203 transitions. [2024-06-27 22:12:21,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451754385964912 [2024-06-27 22:12:21,736 INFO L175 Difference]: Start difference. First operand has 404 places, 569 transitions, 9488 flow. Second operand 12 states and 203 transitions. [2024-06-27 22:12:21,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 600 transitions, 11202 flow [2024-06-27 22:12:23,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 600 transitions, 10954 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-27 22:12:23,903 INFO L231 Difference]: Finished difference. Result has 406 places, 571 transitions, 9336 flow [2024-06-27 22:12:23,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9240, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9336, PETRI_PLACES=406, PETRI_TRANSITIONS=571} [2024-06-27 22:12:23,903 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 364 predicate places. [2024-06-27 22:12:23,903 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 571 transitions, 9336 flow [2024-06-27 22:12:23,903 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 22:12:23,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:23,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:23,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 22:12:23,904 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:23,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:23,904 INFO L85 PathProgramCache]: Analyzing trace with hash -96201140, now seen corresponding path program 3 times [2024-06-27 22:12:23,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:23,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404587432] [2024-06-27 22:12:23,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:23,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:26,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:26,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:26,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404587432] [2024-06-27 22:12:26,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404587432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:26,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:26,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:12:26,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577552311] [2024-06-27 22:12:26,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:26,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:12:26,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:26,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:12:26,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:12:26,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:12:26,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 571 transitions, 9336 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:12:26,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:26,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:12:26,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:27,632 INFO L124 PetriNetUnfolderBase]: 1423/2605 cut-off events. [2024-06-27 22:12:27,632 INFO L125 PetriNetUnfolderBase]: For 395600/395600 co-relation queries the response was YES. [2024-06-27 22:12:27,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27482 conditions, 2605 events. 1423/2605 cut-off events. For 395600/395600 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 15968 event pairs, 377 based on Foata normal form. 2/2439 useless extension candidates. Maximal degree in co-relation 27285. Up to 2259 conditions per place. [2024-06-27 22:12:27,674 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 568 selfloop transitions, 21 changer transitions 0/598 dead transitions. [2024-06-27 22:12:27,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 598 transitions, 10774 flow [2024-06-27 22:12:27,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:12:27,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:12:27,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 198 transitions. [2024-06-27 22:12:27,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4008097165991903 [2024-06-27 22:12:27,675 INFO L175 Difference]: Start difference. First operand has 406 places, 571 transitions, 9336 flow. Second operand 13 states and 198 transitions. [2024-06-27 22:12:27,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 598 transitions, 10774 flow [2024-06-27 22:12:29,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 598 transitions, 10718 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 22:12:29,740 INFO L231 Difference]: Finished difference. Result has 411 places, 574 transitions, 9374 flow [2024-06-27 22:12:29,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9288, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9374, PETRI_PLACES=411, PETRI_TRANSITIONS=574} [2024-06-27 22:12:29,741 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 369 predicate places. [2024-06-27 22:12:29,741 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 574 transitions, 9374 flow [2024-06-27 22:12:29,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:12:29,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:29,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:29,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 22:12:29,742 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:29,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:29,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1849474846, now seen corresponding path program 11 times [2024-06-27 22:12:29,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:29,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941327294] [2024-06-27 22:12:29,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:29,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:31,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:31,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:31,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941327294] [2024-06-27 22:12:31,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941327294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:31,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:31,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:12:31,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080097475] [2024-06-27 22:12:31,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:31,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:12:31,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:31,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:12:31,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:12:31,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:12:31,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 574 transitions, 9374 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 22:12:31,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:31,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:12:31,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:32,746 INFO L124 PetriNetUnfolderBase]: 1177/2233 cut-off events. [2024-06-27 22:12:32,746 INFO L125 PetriNetUnfolderBase]: For 415309/415328 co-relation queries the response was YES. [2024-06-27 22:12:32,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25633 conditions, 2233 events. 1177/2233 cut-off events. For 415309/415328 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 13752 event pairs, 172 based on Foata normal form. 7/2039 useless extension candidates. Maximal degree in co-relation 25434. Up to 1286 conditions per place. [2024-06-27 22:12:32,782 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 302 selfloop transitions, 274 changer transitions 0/596 dead transitions. [2024-06-27 22:12:32,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 596 transitions, 11525 flow [2024-06-27 22:12:32,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:12:32,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:12:32,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 22:12:32,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2024-06-27 22:12:32,783 INFO L175 Difference]: Start difference. First operand has 411 places, 574 transitions, 9374 flow. Second operand 9 states and 165 transitions. [2024-06-27 22:12:32,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 596 transitions, 11525 flow [2024-06-27 22:12:34,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 596 transitions, 11475 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 22:12:34,514 INFO L231 Difference]: Finished difference. Result has 411 places, 584 transitions, 10409 flow [2024-06-27 22:12:34,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9324, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10409, PETRI_PLACES=411, PETRI_TRANSITIONS=584} [2024-06-27 22:12:34,515 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 369 predicate places. [2024-06-27 22:12:34,515 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 584 transitions, 10409 flow [2024-06-27 22:12:34,515 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 22:12:34,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:34,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:34,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 22:12:34,515 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:34,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:34,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1302476454, now seen corresponding path program 26 times [2024-06-27 22:12:34,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:34,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744725197] [2024-06-27 22:12:34,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:34,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:36,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:36,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:36,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744725197] [2024-06-27 22:12:36,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744725197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:36,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:36,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:12:36,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721209795] [2024-06-27 22:12:36,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:36,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:12:36,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:36,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:12:36,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:12:37,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:12:37,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 584 transitions, 10409 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:12:37,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:37,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:12:37,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:38,204 INFO L124 PetriNetUnfolderBase]: 1457/2649 cut-off events. [2024-06-27 22:12:38,204 INFO L125 PetriNetUnfolderBase]: For 437147/437147 co-relation queries the response was YES. [2024-06-27 22:12:38,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30103 conditions, 2649 events. 1457/2649 cut-off events. For 437147/437147 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 16146 event pairs, 167 based on Foata normal form. 1/2471 useless extension candidates. Maximal degree in co-relation 29903. Up to 2033 conditions per place. [2024-06-27 22:12:38,247 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 424 selfloop transitions, 172 changer transitions 0/605 dead transitions. [2024-06-27 22:12:38,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 605 transitions, 12318 flow [2024-06-27 22:12:38,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:12:38,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:12:38,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 22:12:38,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4354066985645933 [2024-06-27 22:12:38,248 INFO L175 Difference]: Start difference. First operand has 411 places, 584 transitions, 10409 flow. Second operand 11 states and 182 transitions. [2024-06-27 22:12:38,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 605 transitions, 12318 flow [2024-06-27 22:12:40,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 605 transitions, 12029 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-27 22:12:40,422 INFO L231 Difference]: Finished difference. Result has 419 places, 588 transitions, 10838 flow [2024-06-27 22:12:40,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10120, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10838, PETRI_PLACES=419, PETRI_TRANSITIONS=588} [2024-06-27 22:12:40,423 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 377 predicate places. [2024-06-27 22:12:40,423 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 588 transitions, 10838 flow [2024-06-27 22:12:40,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:12:40,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:40,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:40,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 22:12:40,424 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:40,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:40,424 INFO L85 PathProgramCache]: Analyzing trace with hash -391785830, now seen corresponding path program 27 times [2024-06-27 22:12:40,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:40,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577421795] [2024-06-27 22:12:40,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:40,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:43,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:43,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:43,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577421795] [2024-06-27 22:12:43,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577421795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:43,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:43,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:12:43,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932467104] [2024-06-27 22:12:43,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:43,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:12:43,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:43,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:12:43,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:12:43,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:12:43,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 588 transitions, 10838 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:12:43,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:43,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:12:43,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:44,297 INFO L124 PetriNetUnfolderBase]: 1463/2661 cut-off events. [2024-06-27 22:12:44,297 INFO L125 PetriNetUnfolderBase]: For 448473/448473 co-relation queries the response was YES. [2024-06-27 22:12:44,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30724 conditions, 2661 events. 1463/2661 cut-off events. For 448473/448473 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 16266 event pairs, 167 based on Foata normal form. 1/2482 useless extension candidates. Maximal degree in co-relation 30520. Up to 2027 conditions per place. [2024-06-27 22:12:44,341 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 422 selfloop transitions, 176 changer transitions 0/607 dead transitions. [2024-06-27 22:12:44,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 607 transitions, 12578 flow [2024-06-27 22:12:44,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:12:44,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:12:44,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 22:12:44,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44019138755980863 [2024-06-27 22:12:44,342 INFO L175 Difference]: Start difference. First operand has 419 places, 588 transitions, 10838 flow. Second operand 11 states and 184 transitions. [2024-06-27 22:12:44,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 607 transitions, 12578 flow [2024-06-27 22:12:46,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 607 transitions, 12172 flow, removed 98 selfloop flow, removed 7 redundant places. [2024-06-27 22:12:46,567 INFO L231 Difference]: Finished difference. Result has 423 places, 590 transitions, 10975 flow [2024-06-27 22:12:46,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10432, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10975, PETRI_PLACES=423, PETRI_TRANSITIONS=590} [2024-06-27 22:12:46,567 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 381 predicate places. [2024-06-27 22:12:46,567 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 590 transitions, 10975 flow [2024-06-27 22:12:46,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:12:46,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:46,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:46,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 22:12:46,568 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:46,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:46,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1920774432, now seen corresponding path program 2 times [2024-06-27 22:12:46,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:46,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298198515] [2024-06-27 22:12:46,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:46,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:48,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:48,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:48,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298198515] [2024-06-27 22:12:48,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298198515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:48,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:48,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:12:48,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695123739] [2024-06-27 22:12:48,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:48,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:12:48,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:48,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:12:48,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:12:48,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:12:48,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 590 transitions, 10975 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:48,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:48,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:12:48,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:49,814 INFO L124 PetriNetUnfolderBase]: 1175/2245 cut-off events. [2024-06-27 22:12:49,815 INFO L125 PetriNetUnfolderBase]: For 446299/446319 co-relation queries the response was YES. [2024-06-27 22:12:49,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27411 conditions, 2245 events. 1175/2245 cut-off events. For 446299/446319 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 13976 event pairs, 160 based on Foata normal form. 1/2057 useless extension candidates. Maximal degree in co-relation 27205. Up to 1703 conditions per place. [2024-06-27 22:12:49,849 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 487 selfloop transitions, 100 changer transitions 0/607 dead transitions. [2024-06-27 22:12:49,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 607 transitions, 12879 flow [2024-06-27 22:12:49,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:12:49,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:12:49,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:12:49,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45263157894736844 [2024-06-27 22:12:49,851 INFO L175 Difference]: Start difference. First operand has 423 places, 590 transitions, 10975 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:12:49,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 607 transitions, 12879 flow [2024-06-27 22:12:51,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 607 transitions, 12356 flow, removed 87 selfloop flow, removed 9 redundant places. [2024-06-27 22:12:51,895 INFO L231 Difference]: Finished difference. Result has 424 places, 596 transitions, 10823 flow [2024-06-27 22:12:51,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10452, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10823, PETRI_PLACES=424, PETRI_TRANSITIONS=596} [2024-06-27 22:12:51,896 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 382 predicate places. [2024-06-27 22:12:51,896 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 596 transitions, 10823 flow [2024-06-27 22:12:51,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:51,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:51,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:51,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 22:12:51,897 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:51,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:51,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1920774122, now seen corresponding path program 12 times [2024-06-27 22:12:51,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:51,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092847834] [2024-06-27 22:12:51,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:51,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:54,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:54,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:54,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092847834] [2024-06-27 22:12:54,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092847834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:54,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:54,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:12:54,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964850030] [2024-06-27 22:12:54,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:54,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:12:54,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:54,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:12:54,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:12:54,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:12:54,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 596 transitions, 10823 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 22:12:54,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:54,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:12:54,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:12:55,210 INFO L124 PetriNetUnfolderBase]: 1202/2270 cut-off events. [2024-06-27 22:12:55,210 INFO L125 PetriNetUnfolderBase]: For 449310/449329 co-relation queries the response was YES. [2024-06-27 22:12:55,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27471 conditions, 2270 events. 1202/2270 cut-off events. For 449310/449329 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 13989 event pairs, 175 based on Foata normal form. 7/2075 useless extension candidates. Maximal degree in co-relation 27264. Up to 1321 conditions per place. [2024-06-27 22:12:55,251 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 314 selfloop transitions, 275 changer transitions 0/609 dead transitions. [2024-06-27 22:12:55,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 609 transitions, 12641 flow [2024-06-27 22:12:55,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:12:55,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:12:55,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 22:12:55,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2024-06-27 22:12:55,252 INFO L175 Difference]: Start difference. First operand has 424 places, 596 transitions, 10823 flow. Second operand 9 states and 166 transitions. [2024-06-27 22:12:55,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 609 transitions, 12641 flow [2024-06-27 22:12:57,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 609 transitions, 12515 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-27 22:12:57,546 INFO L231 Difference]: Finished difference. Result has 428 places, 598 transitions, 11320 flow [2024-06-27 22:12:57,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10697, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11320, PETRI_PLACES=428, PETRI_TRANSITIONS=598} [2024-06-27 22:12:57,547 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 386 predicate places. [2024-06-27 22:12:57,547 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 598 transitions, 11320 flow [2024-06-27 22:12:57,547 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 22:12:57,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:12:57,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:12:57,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 22:12:57,548 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:12:57,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:12:57,549 INFO L85 PathProgramCache]: Analyzing trace with hash 786032584, now seen corresponding path program 13 times [2024-06-27 22:12:57,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:12:57,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217832177] [2024-06-27 22:12:57,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:12:57,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:12:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:12:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:12:59,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:12:59,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217832177] [2024-06-27 22:12:59,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217832177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:12:59,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:12:59,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:12:59,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661369766] [2024-06-27 22:12:59,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:12:59,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:12:59,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:12:59,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:12:59,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:12:59,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:12:59,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 598 transitions, 11320 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:12:59,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:12:59,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:12:59,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:00,471 INFO L124 PetriNetUnfolderBase]: 1215/2291 cut-off events. [2024-06-27 22:13:00,471 INFO L125 PetriNetUnfolderBase]: For 478658/478673 co-relation queries the response was YES. [2024-06-27 22:13:00,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28675 conditions, 2291 events. 1215/2291 cut-off events. For 478658/478673 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 14140 event pairs, 174 based on Foata normal form. 7/2096 useless extension candidates. Maximal degree in co-relation 28467. Up to 1693 conditions per place. [2024-06-27 22:13:00,508 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 416 selfloop transitions, 181 changer transitions 0/617 dead transitions. [2024-06-27 22:13:00,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 617 transitions, 13645 flow [2024-06-27 22:13:00,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:13:00,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:13:00,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:13:00,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710526315789474 [2024-06-27 22:13:00,509 INFO L175 Difference]: Start difference. First operand has 428 places, 598 transitions, 11320 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:13:00,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 617 transitions, 13645 flow [2024-06-27 22:13:02,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 617 transitions, 13034 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 22:13:02,669 INFO L231 Difference]: Finished difference. Result has 432 places, 605 transitions, 11355 flow [2024-06-27 22:13:02,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10723, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11355, PETRI_PLACES=432, PETRI_TRANSITIONS=605} [2024-06-27 22:13:02,669 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 390 predicate places. [2024-06-27 22:13:02,669 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 605 transitions, 11355 flow [2024-06-27 22:13:02,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:02,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:02,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:02,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 22:13:02,670 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:02,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:02,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1392403068, now seen corresponding path program 14 times [2024-06-27 22:13:02,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:02,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769152798] [2024-06-27 22:13:02,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:02,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:04,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:04,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:04,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769152798] [2024-06-27 22:13:04,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769152798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:04,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:04,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:13:04,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906461442] [2024-06-27 22:13:04,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:04,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:13:04,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:04,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:13:04,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:13:04,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:13:04,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 605 transitions, 11355 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 22:13:04,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:04,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:13:04,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:05,399 INFO L124 PetriNetUnfolderBase]: 1223/2304 cut-off events. [2024-06-27 22:13:05,399 INFO L125 PetriNetUnfolderBase]: For 492147/492162 co-relation queries the response was YES. [2024-06-27 22:13:05,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28782 conditions, 2304 events. 1223/2304 cut-off events. For 492147/492162 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 14219 event pairs, 176 based on Foata normal form. 7/2109 useless extension candidates. Maximal degree in co-relation 28572. Up to 1732 conditions per place. [2024-06-27 22:13:05,437 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 427 selfloop transitions, 173 changer transitions 0/620 dead transitions. [2024-06-27 22:13:05,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 620 transitions, 13303 flow [2024-06-27 22:13:05,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:13:05,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:13:05,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:13:05,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-06-27 22:13:05,438 INFO L175 Difference]: Start difference. First operand has 432 places, 605 transitions, 11355 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:13:05,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 620 transitions, 13303 flow [2024-06-27 22:13:07,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 620 transitions, 12987 flow, removed 60 selfloop flow, removed 4 redundant places. [2024-06-27 22:13:07,660 INFO L231 Difference]: Finished difference. Result has 437 places, 609 transitions, 11558 flow [2024-06-27 22:13:07,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11055, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11558, PETRI_PLACES=437, PETRI_TRANSITIONS=609} [2024-06-27 22:13:07,661 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 395 predicate places. [2024-06-27 22:13:07,661 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 609 transitions, 11558 flow [2024-06-27 22:13:07,661 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 22:13:07,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:07,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:07,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 22:13:07,662 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:07,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:07,662 INFO L85 PathProgramCache]: Analyzing trace with hash -2019631294, now seen corresponding path program 3 times [2024-06-27 22:13:07,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:07,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532036566] [2024-06-27 22:13:07,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:07,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:10,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:10,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:10,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532036566] [2024-06-27 22:13:10,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532036566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:10,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:10,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:13:10,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814193651] [2024-06-27 22:13:10,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:10,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:13:10,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:10,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:13:10,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:13:10,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:13:10,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 609 transitions, 11558 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:13:10,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:10,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:13:10,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:11,671 INFO L124 PetriNetUnfolderBase]: 1527/2771 cut-off events. [2024-06-27 22:13:11,671 INFO L125 PetriNetUnfolderBase]: For 514715/514715 co-relation queries the response was YES. [2024-06-27 22:13:11,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33044 conditions, 2771 events. 1527/2771 cut-off events. For 514715/514715 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 17084 event pairs, 377 based on Foata normal form. 1/2596 useless extension candidates. Maximal degree in co-relation 32833. Up to 2421 conditions per place. [2024-06-27 22:13:11,718 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 599 selfloop transitions, 24 changer transitions 0/632 dead transitions. [2024-06-27 22:13:11,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 632 transitions, 13284 flow [2024-06-27 22:13:11,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:13:11,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:13:11,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 185 transitions. [2024-06-27 22:13:11,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4057017543859649 [2024-06-27 22:13:11,719 INFO L175 Difference]: Start difference. First operand has 437 places, 609 transitions, 11558 flow. Second operand 12 states and 185 transitions. [2024-06-27 22:13:11,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 632 transitions, 13284 flow [2024-06-27 22:13:14,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 632 transitions, 12876 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-27 22:13:14,259 INFO L231 Difference]: Finished difference. Result has 443 places, 613 transitions, 11303 flow [2024-06-27 22:13:14,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11150, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=587, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11303, PETRI_PLACES=443, PETRI_TRANSITIONS=613} [2024-06-27 22:13:14,259 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 401 predicate places. [2024-06-27 22:13:14,260 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 613 transitions, 11303 flow [2024-06-27 22:13:14,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:13:14,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:14,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:14,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 22:13:14,260 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:14,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:14,260 INFO L85 PathProgramCache]: Analyzing trace with hash -2031595372, now seen corresponding path program 4 times [2024-06-27 22:13:14,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:14,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065899713] [2024-06-27 22:13:14,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:14,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:16,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:16,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:16,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065899713] [2024-06-27 22:13:16,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065899713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:16,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:16,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:13:16,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863988998] [2024-06-27 22:13:16,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:16,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:13:16,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:16,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:13:16,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:13:16,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:13:16,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 613 transitions, 11303 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:13:16,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:16,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:13:16,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:17,875 INFO L124 PetriNetUnfolderBase]: 1524/2766 cut-off events. [2024-06-27 22:13:17,875 INFO L125 PetriNetUnfolderBase]: For 509247/509247 co-relation queries the response was YES. [2024-06-27 22:13:17,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32358 conditions, 2766 events. 1524/2766 cut-off events. For 509247/509247 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 17057 event pairs, 376 based on Foata normal form. 2/2592 useless extension candidates. Maximal degree in co-relation 32145. Up to 2414 conditions per place. [2024-06-27 22:13:17,914 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 604 selfloop transitions, 20 changer transitions 0/633 dead transitions. [2024-06-27 22:13:17,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 633 transitions, 12741 flow [2024-06-27 22:13:17,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:13:17,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:13:17,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-27 22:13:17,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41148325358851673 [2024-06-27 22:13:17,915 INFO L175 Difference]: Start difference. First operand has 443 places, 613 transitions, 11303 flow. Second operand 11 states and 172 transitions. [2024-06-27 22:13:17,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 633 transitions, 12741 flow [2024-06-27 22:13:20,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 633 transitions, 12667 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 22:13:20,314 INFO L231 Difference]: Finished difference. Result has 446 places, 613 transitions, 11273 flow [2024-06-27 22:13:20,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11229, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11273, PETRI_PLACES=446, PETRI_TRANSITIONS=613} [2024-06-27 22:13:20,314 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 404 predicate places. [2024-06-27 22:13:20,315 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 613 transitions, 11273 flow [2024-06-27 22:13:20,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:13:20,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:20,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:20,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 22:13:20,315 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:20,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:20,315 INFO L85 PathProgramCache]: Analyzing trace with hash 777989014, now seen corresponding path program 15 times [2024-06-27 22:13:20,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:20,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136450839] [2024-06-27 22:13:20,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:20,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:21,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:21,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:21,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136450839] [2024-06-27 22:13:21,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136450839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:21,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:21,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:13:21,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799445349] [2024-06-27 22:13:21,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:21,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:13:21,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:21,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:13:21,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:13:22,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:13:22,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 613 transitions, 11273 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 22:13:22,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:22,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:13:22,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:23,075 INFO L124 PetriNetUnfolderBase]: 1228/2311 cut-off events. [2024-06-27 22:13:23,075 INFO L125 PetriNetUnfolderBase]: For 486496/486515 co-relation queries the response was YES. [2024-06-27 22:13:23,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28444 conditions, 2311 events. 1228/2311 cut-off events. For 486496/486515 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 14276 event pairs, 174 based on Foata normal form. 7/2114 useless extension candidates. Maximal degree in co-relation 28229. Up to 1790 conditions per place. [2024-06-27 22:13:23,116 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 452 selfloop transitions, 152 changer transitions 0/624 dead transitions. [2024-06-27 22:13:23,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 624 transitions, 12808 flow [2024-06-27 22:13:23,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:13:23,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:13:23,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 22:13:23,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649122807017544 [2024-06-27 22:13:23,117 INFO L175 Difference]: Start difference. First operand has 446 places, 613 transitions, 11273 flow. Second operand 9 states and 159 transitions. [2024-06-27 22:13:23,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 624 transitions, 12808 flow [2024-06-27 22:13:25,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 624 transitions, 12704 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-27 22:13:25,642 INFO L231 Difference]: Finished difference. Result has 446 places, 614 transitions, 11510 flow [2024-06-27 22:13:25,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11169, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11510, PETRI_PLACES=446, PETRI_TRANSITIONS=614} [2024-06-27 22:13:25,643 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 404 predicate places. [2024-06-27 22:13:25,643 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 614 transitions, 11510 flow [2024-06-27 22:13:25,643 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 22:13:25,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:25,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:25,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 22:13:25,644 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:25,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:25,644 INFO L85 PathProgramCache]: Analyzing trace with hash 777989324, now seen corresponding path program 4 times [2024-06-27 22:13:25,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:25,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678526327] [2024-06-27 22:13:25,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:25,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:27,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:27,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:27,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678526327] [2024-06-27 22:13:27,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678526327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:27,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:27,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:13:27,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661173874] [2024-06-27 22:13:27,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:27,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:13:27,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:27,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:13:27,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:13:27,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:13:27,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 614 transitions, 11510 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:27,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:27,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:13:27,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:28,766 INFO L124 PetriNetUnfolderBase]: 1208/2297 cut-off events. [2024-06-27 22:13:28,766 INFO L125 PetriNetUnfolderBase]: For 490351/490371 co-relation queries the response was YES. [2024-06-27 22:13:28,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28486 conditions, 2297 events. 1208/2297 cut-off events. For 490351/490371 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 14326 event pairs, 159 based on Foata normal form. 1/2106 useless extension candidates. Maximal degree in co-relation 28270. Up to 1922 conditions per place. [2024-06-27 22:13:28,800 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 553 selfloop transitions, 52 changer transitions 0/625 dead transitions. [2024-06-27 22:13:28,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 625 transitions, 12798 flow [2024-06-27 22:13:28,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:13:28,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:13:28,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 22:13:28,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263157894736842 [2024-06-27 22:13:28,801 INFO L175 Difference]: Start difference. First operand has 446 places, 614 transitions, 11510 flow. Second operand 10 states and 162 transitions. [2024-06-27 22:13:28,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 625 transitions, 12798 flow [2024-06-27 22:13:31,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 625 transitions, 12496 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 22:13:31,133 INFO L231 Difference]: Finished difference. Result has 449 places, 616 transitions, 11379 flow [2024-06-27 22:13:31,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11208, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11379, PETRI_PLACES=449, PETRI_TRANSITIONS=616} [2024-06-27 22:13:31,134 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 407 predicate places. [2024-06-27 22:13:31,134 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 616 transitions, 11379 flow [2024-06-27 22:13:31,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:31,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:31,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:31,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 22:13:31,134 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:31,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:31,135 INFO L85 PathProgramCache]: Analyzing trace with hash 786032894, now seen corresponding path program 5 times [2024-06-27 22:13:31,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:31,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094049089] [2024-06-27 22:13:31,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:31,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:32,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:32,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:32,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094049089] [2024-06-27 22:13:32,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094049089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:32,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:32,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:13:32,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167766408] [2024-06-27 22:13:32,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:32,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:13:32,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:32,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:13:32,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:13:33,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:13:33,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 616 transitions, 11379 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:33,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:33,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:13:33,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:34,066 INFO L124 PetriNetUnfolderBase]: 1212/2306 cut-off events. [2024-06-27 22:13:34,066 INFO L125 PetriNetUnfolderBase]: For 507695/507719 co-relation queries the response was YES. [2024-06-27 22:13:34,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28436 conditions, 2306 events. 1212/2306 cut-off events. For 507695/507719 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 14370 event pairs, 124 based on Foata normal form. 1/2111 useless extension candidates. Maximal degree in co-relation 28218. Up to 1901 conditions per place. [2024-06-27 22:13:34,106 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 546 selfloop transitions, 62 changer transitions 0/628 dead transitions. [2024-06-27 22:13:34,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 628 transitions, 12967 flow [2024-06-27 22:13:34,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:13:34,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:13:34,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 22:13:34,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44473684210526315 [2024-06-27 22:13:34,107 INFO L175 Difference]: Start difference. First operand has 449 places, 616 transitions, 11379 flow. Second operand 10 states and 169 transitions. [2024-06-27 22:13:34,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 628 transitions, 12967 flow [2024-06-27 22:13:36,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 628 transitions, 12820 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 22:13:36,535 INFO L231 Difference]: Finished difference. Result has 451 places, 618 transitions, 11423 flow [2024-06-27 22:13:36,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11232, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11423, PETRI_PLACES=451, PETRI_TRANSITIONS=618} [2024-06-27 22:13:36,536 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 409 predicate places. [2024-06-27 22:13:36,536 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 618 transitions, 11423 flow [2024-06-27 22:13:36,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:36,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:36,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:36,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 22:13:36,537 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:36,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:36,537 INFO L85 PathProgramCache]: Analyzing trace with hash 777750004, now seen corresponding path program 16 times [2024-06-27 22:13:36,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:36,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346579693] [2024-06-27 22:13:36,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:36,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:38,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:38,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:38,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346579693] [2024-06-27 22:13:38,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346579693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:38,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:38,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:13:38,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142111852] [2024-06-27 22:13:38,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:38,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:13:38,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:38,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:13:38,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:13:38,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:13:38,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 618 transitions, 11423 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 22:13:38,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:38,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:13:38,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:39,087 INFO L124 PetriNetUnfolderBase]: 1233/2319 cut-off events. [2024-06-27 22:13:39,087 INFO L125 PetriNetUnfolderBase]: For 492805/492824 co-relation queries the response was YES. [2024-06-27 22:13:39,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28364 conditions, 2319 events. 1233/2319 cut-off events. For 492805/492824 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 14323 event pairs, 173 based on Foata normal form. 8/2121 useless extension candidates. Maximal degree in co-relation 28145. Up to 1765 conditions per place. [2024-06-27 22:13:39,127 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 440 selfloop transitions, 168 changer transitions 0/628 dead transitions. [2024-06-27 22:13:39,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 628 transitions, 12951 flow [2024-06-27 22:13:39,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:13:39,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:13:39,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 22:13:39,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649122807017544 [2024-06-27 22:13:39,129 INFO L175 Difference]: Start difference. First operand has 451 places, 618 transitions, 11423 flow. Second operand 9 states and 159 transitions. [2024-06-27 22:13:39,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 628 transitions, 12951 flow [2024-06-27 22:13:42,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 628 transitions, 12664 flow, removed 59 selfloop flow, removed 8 redundant places. [2024-06-27 22:13:42,020 INFO L231 Difference]: Finished difference. Result has 452 places, 618 transitions, 11480 flow [2024-06-27 22:13:42,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11136, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11480, PETRI_PLACES=452, PETRI_TRANSITIONS=618} [2024-06-27 22:13:42,021 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 410 predicate places. [2024-06-27 22:13:42,021 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 618 transitions, 11480 flow [2024-06-27 22:13:42,021 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 22:13:42,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:42,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:42,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 22:13:42,021 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:42,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:42,022 INFO L85 PathProgramCache]: Analyzing trace with hash -2031595744, now seen corresponding path program 6 times [2024-06-27 22:13:42,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:42,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554616143] [2024-06-27 22:13:42,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:42,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:44,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:44,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:44,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554616143] [2024-06-27 22:13:44,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554616143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:44,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:44,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:13:44,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210265490] [2024-06-27 22:13:44,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:44,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:13:44,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:44,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:13:44,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:13:44,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:13:44,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 618 transitions, 11480 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:13:44,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:44,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:13:44,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:45,884 INFO L124 PetriNetUnfolderBase]: 1537/2786 cut-off events. [2024-06-27 22:13:45,884 INFO L125 PetriNetUnfolderBase]: For 499051/499051 co-relation queries the response was YES. [2024-06-27 22:13:45,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32289 conditions, 2786 events. 1537/2786 cut-off events. For 499051/499051 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 17123 event pairs, 375 based on Foata normal form. 1/2608 useless extension candidates. Maximal degree in co-relation 32070. Up to 2449 conditions per place. [2024-06-27 22:13:45,933 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 607 selfloop transitions, 21 changer transitions 0/637 dead transitions. [2024-06-27 22:13:45,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 637 transitions, 13168 flow [2024-06-27 22:13:45,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:13:45,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:13:45,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-27 22:13:45,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40669856459330145 [2024-06-27 22:13:45,934 INFO L175 Difference]: Start difference. First operand has 452 places, 618 transitions, 11480 flow. Second operand 11 states and 170 transitions. [2024-06-27 22:13:45,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 637 transitions, 13168 flow [2024-06-27 22:13:48,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 637 transitions, 12732 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-27 22:13:48,859 INFO L231 Difference]: Finished difference. Result has 454 places, 620 transitions, 11139 flow [2024-06-27 22:13:48,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11044, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11139, PETRI_PLACES=454, PETRI_TRANSITIONS=620} [2024-06-27 22:13:48,859 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 412 predicate places. [2024-06-27 22:13:48,859 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 620 transitions, 11139 flow [2024-06-27 22:13:48,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:13:48,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:48,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:48,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 22:13:48,860 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:48,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:48,860 INFO L85 PathProgramCache]: Analyzing trace with hash 777743246, now seen corresponding path program 28 times [2024-06-27 22:13:48,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:48,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525789732] [2024-06-27 22:13:48,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:48,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:50,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:50,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:50,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525789732] [2024-06-27 22:13:50,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525789732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:50,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:50,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:13:50,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225949462] [2024-06-27 22:13:50,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:50,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:13:50,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:50,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:13:50,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:13:50,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:13:50,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 620 transitions, 11139 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 22:13:50,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:50,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:13:50,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:51,722 INFO L124 PetriNetUnfolderBase]: 1534/2770 cut-off events. [2024-06-27 22:13:51,722 INFO L125 PetriNetUnfolderBase]: For 490380/490380 co-relation queries the response was YES. [2024-06-27 22:13:51,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31507 conditions, 2770 events. 1534/2770 cut-off events. For 490380/490380 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 16946 event pairs, 165 based on Foata normal form. 1/2584 useless extension candidates. Maximal degree in co-relation 31287. Up to 2162 conditions per place. [2024-06-27 22:13:51,771 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 458 selfloop transitions, 169 changer transitions 0/636 dead transitions. [2024-06-27 22:13:51,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 636 transitions, 12483 flow [2024-06-27 22:13:51,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:13:51,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:13:51,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 22:13:51,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44473684210526315 [2024-06-27 22:13:51,773 INFO L175 Difference]: Start difference. First operand has 454 places, 620 transitions, 11139 flow. Second operand 10 states and 169 transitions. [2024-06-27 22:13:51,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 636 transitions, 12483 flow [2024-06-27 22:13:54,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 636 transitions, 12268 flow, removed 86 selfloop flow, removed 9 redundant places. [2024-06-27 22:13:54,668 INFO L231 Difference]: Finished difference. Result has 455 places, 620 transitions, 11267 flow [2024-06-27 22:13:54,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10924, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11267, PETRI_PLACES=455, PETRI_TRANSITIONS=620} [2024-06-27 22:13:54,668 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 413 predicate places. [2024-06-27 22:13:54,668 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 620 transitions, 11267 flow [2024-06-27 22:13:54,668 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 22:13:54,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:54,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:54,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 22:13:54,669 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:54,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:54,669 INFO L85 PathProgramCache]: Analyzing trace with hash 786024214, now seen corresponding path program 17 times [2024-06-27 22:13:54,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:54,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787463656] [2024-06-27 22:13:54,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:54,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:56,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:56,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:56,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787463656] [2024-06-27 22:13:56,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787463656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:56,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:56,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:13:56,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908108392] [2024-06-27 22:13:56,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:56,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:13:56,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:56,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:13:56,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:13:56,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:13:56,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 620 transitions, 11267 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:56,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:56,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:13:56,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:57,949 INFO L124 PetriNetUnfolderBase]: 1228/2316 cut-off events. [2024-06-27 22:13:57,949 INFO L125 PetriNetUnfolderBase]: For 476278/476293 co-relation queries the response was YES. [2024-06-27 22:13:57,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27776 conditions, 2316 events. 1228/2316 cut-off events. For 476278/476293 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 14332 event pairs, 170 based on Foata normal form. 7/2113 useless extension candidates. Maximal degree in co-relation 27555. Up to 1718 conditions per place. [2024-06-27 22:13:57,985 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 423 selfloop transitions, 187 changer transitions 0/630 dead transitions. [2024-06-27 22:13:57,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 630 transitions, 12805 flow [2024-06-27 22:13:57,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:13:57,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:13:57,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 22:13:57,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4631578947368421 [2024-06-27 22:13:57,986 INFO L175 Difference]: Start difference. First operand has 455 places, 620 transitions, 11267 flow. Second operand 10 states and 176 transitions. [2024-06-27 22:13:57,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 630 transitions, 12805 flow [2024-06-27 22:14:00,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 630 transitions, 12404 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-27 22:14:00,422 INFO L231 Difference]: Finished difference. Result has 456 places, 620 transitions, 11245 flow [2024-06-27 22:14:00,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10866, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11245, PETRI_PLACES=456, PETRI_TRANSITIONS=620} [2024-06-27 22:14:00,422 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 414 predicate places. [2024-06-27 22:14:00,423 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 620 transitions, 11245 flow [2024-06-27 22:14:00,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:00,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:00,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:00,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 22:14:00,423 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:00,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:00,424 INFO L85 PathProgramCache]: Analyzing trace with hash 786023966, now seen corresponding path program 29 times [2024-06-27 22:14:00,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:00,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967957308] [2024-06-27 22:14:00,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:00,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:02,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:02,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:02,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967957308] [2024-06-27 22:14:02,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967957308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:02,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:02,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:14:02,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079648864] [2024-06-27 22:14:02,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:02,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:14:02,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:02,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:14:02,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:14:02,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:14:02,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 620 transitions, 11245 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:14:02,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:02,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:14:02,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:03,996 INFO L124 PetriNetUnfolderBase]: 1538/2779 cut-off events. [2024-06-27 22:14:03,997 INFO L125 PetriNetUnfolderBase]: For 493535/493535 co-relation queries the response was YES. [2024-06-27 22:14:04,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31739 conditions, 2779 events. 1538/2779 cut-off events. For 493535/493535 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 17051 event pairs, 164 based on Foata normal form. 1/2592 useless extension candidates. Maximal degree in co-relation 31517. Up to 2123 conditions per place. [2024-06-27 22:14:04,045 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 448 selfloop transitions, 181 changer transitions 0/638 dead transitions. [2024-06-27 22:14:04,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 638 transitions, 12779 flow [2024-06-27 22:14:04,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:14:04,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:14:04,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:14:04,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-06-27 22:14:04,047 INFO L175 Difference]: Start difference. First operand has 456 places, 620 transitions, 11245 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:14:04,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 638 transitions, 12779 flow [2024-06-27 22:14:06,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 638 transitions, 12407 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 22:14:06,885 INFO L231 Difference]: Finished difference. Result has 459 places, 622 transitions, 11430 flow [2024-06-27 22:14:06,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10873, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11430, PETRI_PLACES=459, PETRI_TRANSITIONS=622} [2024-06-27 22:14:06,886 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 417 predicate places. [2024-06-27 22:14:06,886 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 622 transitions, 11430 flow [2024-06-27 22:14:06,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:14:06,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:06,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:06,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 22:14:06,887 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:06,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:06,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1849475094, now seen corresponding path program 30 times [2024-06-27 22:14:06,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:06,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653446815] [2024-06-27 22:14:06,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:06,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:09,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:09,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:09,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653446815] [2024-06-27 22:14:09,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653446815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:09,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:09,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:14:09,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423158956] [2024-06-27 22:14:09,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:09,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:14:09,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:09,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:14:09,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:14:09,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:14:09,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 622 transitions, 11430 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:14:09,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:09,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:14:09,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:10,679 INFO L124 PetriNetUnfolderBase]: 1536/2776 cut-off events. [2024-06-27 22:14:10,680 INFO L125 PetriNetUnfolderBase]: For 488705/488705 co-relation queries the response was YES. [2024-06-27 22:14:10,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31539 conditions, 2776 events. 1536/2776 cut-off events. For 488705/488705 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 17015 event pairs, 164 based on Foata normal form. 1/2589 useless extension candidates. Maximal degree in co-relation 31316. Up to 1766 conditions per place. [2024-06-27 22:14:10,726 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 288 selfloop transitions, 343 changer transitions 0/640 dead transitions. [2024-06-27 22:14:10,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 640 transitions, 12972 flow [2024-06-27 22:14:10,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:14:10,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:14:10,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 22:14:10,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43779904306220097 [2024-06-27 22:14:10,727 INFO L175 Difference]: Start difference. First operand has 459 places, 622 transitions, 11430 flow. Second operand 11 states and 183 transitions. [2024-06-27 22:14:10,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 640 transitions, 12972 flow [2024-06-27 22:14:13,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 640 transitions, 12435 flow, removed 89 selfloop flow, removed 9 redundant places. [2024-06-27 22:14:13,415 INFO L231 Difference]: Finished difference. Result has 461 places, 624 transitions, 11778 flow [2024-06-27 22:14:13,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10893, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=341, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11778, PETRI_PLACES=461, PETRI_TRANSITIONS=624} [2024-06-27 22:14:13,416 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 419 predicate places. [2024-06-27 22:14:13,416 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 624 transitions, 11778 flow [2024-06-27 22:14:13,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:14:13,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:13,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:13,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 22:14:13,416 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:13,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:13,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1849167264, now seen corresponding path program 5 times [2024-06-27 22:14:13,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:13,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13492387] [2024-06-27 22:14:13,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:13,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:15,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:15,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:15,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13492387] [2024-06-27 22:14:15,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13492387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:15,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:15,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:14:15,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403830639] [2024-06-27 22:14:15,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:15,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:14:15,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:15,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:14:15,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:14:15,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:14:15,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 624 transitions, 11778 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:15,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:15,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:14:15,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:16,612 INFO L124 PetriNetUnfolderBase]: 1225/2336 cut-off events. [2024-06-27 22:14:16,613 INFO L125 PetriNetUnfolderBase]: For 497750/497779 co-relation queries the response was YES. [2024-06-27 22:14:16,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28090 conditions, 2336 events. 1225/2336 cut-off events. For 497750/497779 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 14665 event pairs, 223 based on Foata normal form. 2/2135 useless extension candidates. Maximal degree in co-relation 27866. Up to 1943 conditions per place. [2024-06-27 22:14:16,658 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 579 selfloop transitions, 39 changer transitions 0/638 dead transitions. [2024-06-27 22:14:16,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 638 transitions, 13160 flow [2024-06-27 22:14:16,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:14:16,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:14:16,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 22:14:16,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368421052631579 [2024-06-27 22:14:16,659 INFO L175 Difference]: Start difference. First operand has 461 places, 624 transitions, 11778 flow. Second operand 10 states and 166 transitions. [2024-06-27 22:14:16,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 638 transitions, 13160 flow [2024-06-27 22:14:18,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 638 transitions, 12295 flow, removed 91 selfloop flow, removed 9 redundant places. [2024-06-27 22:14:18,973 INFO L231 Difference]: Finished difference. Result has 462 places, 625 transitions, 11023 flow [2024-06-27 22:14:18,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10913, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11023, PETRI_PLACES=462, PETRI_TRANSITIONS=625} [2024-06-27 22:14:18,974 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 420 predicate places. [2024-06-27 22:14:18,974 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 625 transitions, 11023 flow [2024-06-27 22:14:18,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:18,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:18,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:18,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 22:14:18,974 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:18,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:18,974 INFO L85 PathProgramCache]: Analyzing trace with hash -383434802, now seen corresponding path program 7 times [2024-06-27 22:14:18,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:18,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588531053] [2024-06-27 22:14:18,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:18,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:21,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:21,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:21,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588531053] [2024-06-27 22:14:21,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588531053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:21,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:21,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:14:21,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163589270] [2024-06-27 22:14:21,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:21,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:14:21,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:21,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:14:21,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:14:21,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:14:21,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 625 transitions, 11023 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 22:14:21,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:21,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:14:21,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:22,120 INFO L124 PetriNetUnfolderBase]: 1228/2346 cut-off events. [2024-06-27 22:14:22,120 INFO L125 PetriNetUnfolderBase]: For 494820/494844 co-relation queries the response was YES. [2024-06-27 22:14:22,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27401 conditions, 2346 events. 1228/2346 cut-off events. For 494820/494844 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 14725 event pairs, 126 based on Foata normal form. 1/2145 useless extension candidates. Maximal degree in co-relation 27176. Up to 1929 conditions per place. [2024-06-27 22:14:22,161 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 551 selfloop transitions, 66 changer transitions 0/637 dead transitions. [2024-06-27 22:14:22,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 637 transitions, 12635 flow [2024-06-27 22:14:22,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:14:22,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:14:22,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 22:14:22,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2024-06-27 22:14:22,162 INFO L175 Difference]: Start difference. First operand has 462 places, 625 transitions, 11023 flow. Second operand 9 states and 156 transitions. [2024-06-27 22:14:22,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 637 transitions, 12635 flow [2024-06-27 22:14:24,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 637 transitions, 12523 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-27 22:14:24,819 INFO L231 Difference]: Finished difference. Result has 461 places, 627 transitions, 11100 flow [2024-06-27 22:14:24,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10911, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11100, PETRI_PLACES=461, PETRI_TRANSITIONS=627} [2024-06-27 22:14:24,819 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 419 predicate places. [2024-06-27 22:14:24,820 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 627 transitions, 11100 flow [2024-06-27 22:14:24,820 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 22:14:24,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:24,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:24,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 22:14:24,820 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:24,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:24,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1311047582, now seen corresponding path program 18 times [2024-06-27 22:14:24,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:24,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123698101] [2024-06-27 22:14:24,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:24,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:26,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:26,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:26,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123698101] [2024-06-27 22:14:26,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123698101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:26,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:26,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:14:26,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220822057] [2024-06-27 22:14:26,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:26,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:14:26,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:26,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:14:26,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:14:26,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:14:26,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 627 transitions, 11100 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:26,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:26,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:14:26,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:27,691 INFO L124 PetriNetUnfolderBase]: 1250/2360 cut-off events. [2024-06-27 22:14:27,691 INFO L125 PetriNetUnfolderBase]: For 476807/476826 co-relation queries the response was YES. [2024-06-27 22:14:27,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27424 conditions, 2360 events. 1250/2360 cut-off events. For 476807/476826 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 14693 event pairs, 176 based on Foata normal form. 7/2155 useless extension candidates. Maximal degree in co-relation 27200. Up to 1755 conditions per place. [2024-06-27 22:14:27,733 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 426 selfloop transitions, 190 changer transitions 0/636 dead transitions. [2024-06-27 22:14:27,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 636 transitions, 12352 flow [2024-06-27 22:14:27,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:14:27,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:14:27,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 22:14:27,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-06-27 22:14:27,734 INFO L175 Difference]: Start difference. First operand has 461 places, 627 transitions, 11100 flow. Second operand 10 states and 175 transitions. [2024-06-27 22:14:27,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 636 transitions, 12352 flow [2024-06-27 22:14:30,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 636 transitions, 12133 flow, removed 51 selfloop flow, removed 6 redundant places. [2024-06-27 22:14:30,404 INFO L231 Difference]: Finished difference. Result has 465 places, 627 transitions, 11266 flow [2024-06-27 22:14:30,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10881, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11266, PETRI_PLACES=465, PETRI_TRANSITIONS=627} [2024-06-27 22:14:30,405 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 423 predicate places. [2024-06-27 22:14:30,405 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 627 transitions, 11266 flow [2024-06-27 22:14:30,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:30,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:30,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:30,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 22:14:30,406 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:30,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:30,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1311058494, now seen corresponding path program 6 times [2024-06-27 22:14:30,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:30,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245031883] [2024-06-27 22:14:30,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:30,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:32,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:32,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:32,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245031883] [2024-06-27 22:14:32,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245031883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:32,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:32,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:14:32,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121084020] [2024-06-27 22:14:32,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:32,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:14:32,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:32,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:14:32,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:14:32,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:14:32,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 627 transitions, 11266 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:32,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:32,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:14:32,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:33,400 INFO L124 PetriNetUnfolderBase]: 1192/2304 cut-off events. [2024-06-27 22:14:33,400 INFO L125 PetriNetUnfolderBase]: For 476880/476906 co-relation queries the response was YES. [2024-06-27 22:14:33,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26819 conditions, 2304 events. 1192/2304 cut-off events. For 476880/476906 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 14720 event pairs, 217 based on Foata normal form. 3/2099 useless extension candidates. Maximal degree in co-relation 26593. Up to 1819 conditions per place. [2024-06-27 22:14:33,440 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 537 selfloop transitions, 27 changer transitions 0/640 dead transitions. [2024-06-27 22:14:33,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 640 transitions, 12514 flow [2024-06-27 22:14:33,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:14:33,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:14:33,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:14:33,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45263157894736844 [2024-06-27 22:14:33,445 INFO L175 Difference]: Start difference. First operand has 465 places, 627 transitions, 11266 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:14:33,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 640 transitions, 12514 flow [2024-06-27 22:14:36,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 640 transitions, 12118 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 22:14:36,017 INFO L231 Difference]: Finished difference. Result has 465 places, 627 transitions, 10928 flow [2024-06-27 22:14:36,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10870, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10928, PETRI_PLACES=465, PETRI_TRANSITIONS=627} [2024-06-27 22:14:36,017 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 423 predicate places. [2024-06-27 22:14:36,017 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 627 transitions, 10928 flow [2024-06-27 22:14:36,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:36,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:36,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:36,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 22:14:36,018 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:36,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:36,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1839347146, now seen corresponding path program 19 times [2024-06-27 22:14:36,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:36,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678501452] [2024-06-27 22:14:36,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:36,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:38,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:38,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:38,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678501452] [2024-06-27 22:14:38,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678501452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:38,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:38,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:14:38,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225803218] [2024-06-27 22:14:38,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:38,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:14:38,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:38,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:14:38,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:14:38,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:14:38,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 627 transitions, 10928 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:14:38,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:38,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:14:38,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:39,711 INFO L124 PetriNetUnfolderBase]: 1559/2836 cut-off events. [2024-06-27 22:14:39,711 INFO L125 PetriNetUnfolderBase]: For 465114/465114 co-relation queries the response was YES. [2024-06-27 22:14:39,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30590 conditions, 2836 events. 1559/2836 cut-off events. For 465114/465114 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 17593 event pairs, 377 based on Foata normal form. 1/2653 useless extension candidates. Maximal degree in co-relation 30363. Up to 2498 conditions per place. [2024-06-27 22:14:39,890 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 618 selfloop transitions, 18 changer transitions 0/645 dead transitions. [2024-06-27 22:14:39,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 645 transitions, 12360 flow [2024-06-27 22:14:39,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:14:39,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:14:39,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-27 22:14:39,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39952153110047844 [2024-06-27 22:14:39,891 INFO L175 Difference]: Start difference. First operand has 465 places, 627 transitions, 10928 flow. Second operand 11 states and 167 transitions. [2024-06-27 22:14:39,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 645 transitions, 12360 flow [2024-06-27 22:14:42,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 645 transitions, 12244 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-27 22:14:42,544 INFO L231 Difference]: Finished difference. Result has 466 places, 629 transitions, 10927 flow [2024-06-27 22:14:42,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10812, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10927, PETRI_PLACES=466, PETRI_TRANSITIONS=629} [2024-06-27 22:14:42,544 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 424 predicate places. [2024-06-27 22:14:42,544 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 629 transitions, 10927 flow [2024-06-27 22:14:42,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:14:42,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:42,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:42,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 22:14:42,545 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:42,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:42,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1311047892, now seen corresponding path program 8 times [2024-06-27 22:14:42,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:42,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042910477] [2024-06-27 22:14:42,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:42,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:44,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:44,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:44,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042910477] [2024-06-27 22:14:44,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042910477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:44,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:44,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:14:44,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367899925] [2024-06-27 22:14:44,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:44,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:14:44,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:44,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:14:44,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:14:44,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:14:44,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 629 transitions, 10927 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:44,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:44,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:14:44,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:45,602 INFO L124 PetriNetUnfolderBase]: 1224/2340 cut-off events. [2024-06-27 22:14:45,602 INFO L125 PetriNetUnfolderBase]: For 465018/465042 co-relation queries the response was YES. [2024-06-27 22:14:45,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26458 conditions, 2340 events. 1224/2340 cut-off events. For 465018/465042 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 14672 event pairs, 125 based on Foata normal form. 1/2139 useless extension candidates. Maximal degree in co-relation 26231. Up to 1924 conditions per place. [2024-06-27 22:14:45,644 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 553 selfloop transitions, 65 changer transitions 0/638 dead transitions. [2024-06-27 22:14:45,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 638 transitions, 12183 flow [2024-06-27 22:14:45,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:14:45,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:14:45,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 22:14:45,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4394736842105263 [2024-06-27 22:14:45,645 INFO L175 Difference]: Start difference. First operand has 466 places, 629 transitions, 10927 flow. Second operand 10 states and 167 transitions. [2024-06-27 22:14:45,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 638 transitions, 12183 flow [2024-06-27 22:14:48,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 638 transitions, 12052 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-27 22:14:48,474 INFO L231 Difference]: Finished difference. Result has 467 places, 629 transitions, 10931 flow [2024-06-27 22:14:48,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10796, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10931, PETRI_PLACES=467, PETRI_TRANSITIONS=629} [2024-06-27 22:14:48,475 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 425 predicate places. [2024-06-27 22:14:48,475 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 629 transitions, 10931 flow [2024-06-27 22:14:48,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:48,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:48,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:48,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 22:14:48,476 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:48,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:48,477 INFO L85 PathProgramCache]: Analyzing trace with hash -106378502, now seen corresponding path program 9 times [2024-06-27 22:14:48,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:48,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991374750] [2024-06-27 22:14:48,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:48,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:50,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:50,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:50,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991374750] [2024-06-27 22:14:50,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991374750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:50,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:50,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:14:50,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282720258] [2024-06-27 22:14:50,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:50,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:14:50,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:50,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:14:50,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:14:50,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:14:50,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 629 transitions, 10931 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:50,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:50,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:14:50,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:51,439 INFO L124 PetriNetUnfolderBase]: 1228/2347 cut-off events. [2024-06-27 22:14:51,439 INFO L125 PetriNetUnfolderBase]: For 467932/467956 co-relation queries the response was YES. [2024-06-27 22:14:51,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26538 conditions, 2347 events. 1228/2347 cut-off events. For 467932/467956 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 14770 event pairs, 125 based on Foata normal form. 1/2144 useless extension candidates. Maximal degree in co-relation 26311. Up to 1783 conditions per place. [2024-06-27 22:14:51,479 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 510 selfloop transitions, 111 changer transitions 0/642 dead transitions. [2024-06-27 22:14:51,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 642 transitions, 12877 flow [2024-06-27 22:14:51,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:14:51,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:14:51,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 22:14:51,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49707602339181284 [2024-06-27 22:14:51,480 INFO L175 Difference]: Start difference. First operand has 467 places, 629 transitions, 10931 flow. Second operand 9 states and 170 transitions. [2024-06-27 22:14:51,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 642 transitions, 12877 flow [2024-06-27 22:14:54,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 642 transitions, 12728 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 22:14:54,425 INFO L231 Difference]: Finished difference. Result has 466 places, 631 transitions, 11061 flow [2024-06-27 22:14:54,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10782, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11061, PETRI_PLACES=466, PETRI_TRANSITIONS=631} [2024-06-27 22:14:54,425 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 424 predicate places. [2024-06-27 22:14:54,425 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 631 transitions, 11061 flow [2024-06-27 22:14:54,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:54,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:54,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:54,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 22:14:54,426 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:54,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:54,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1930893762, now seen corresponding path program 10 times [2024-06-27 22:14:54,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:54,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965705618] [2024-06-27 22:14:54,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:54,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:56,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:56,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:56,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965705618] [2024-06-27 22:14:56,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965705618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:56,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:56,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:14:56,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675059966] [2024-06-27 22:14:56,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:56,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:14:56,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:56,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:14:56,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:14:56,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:14:56,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 631 transitions, 11061 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:14:56,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:56,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:14:56,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:58,073 INFO L124 PetriNetUnfolderBase]: 1561/2838 cut-off events. [2024-06-27 22:14:58,073 INFO L125 PetriNetUnfolderBase]: For 452893/452893 co-relation queries the response was YES. [2024-06-27 22:14:58,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30276 conditions, 2838 events. 1561/2838 cut-off events. For 452893/452893 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 17596 event pairs, 377 based on Foata normal form. 1/2654 useless extension candidates. Maximal degree in co-relation 30048. Up to 2476 conditions per place. [2024-06-27 22:14:58,117 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 612 selfloop transitions, 26 changer transitions 0/647 dead transitions. [2024-06-27 22:14:58,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 647 transitions, 12427 flow [2024-06-27 22:14:58,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:14:58,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:14:58,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-27 22:14:58,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40669856459330145 [2024-06-27 22:14:58,118 INFO L175 Difference]: Start difference. First operand has 466 places, 631 transitions, 11061 flow. Second operand 11 states and 170 transitions. [2024-06-27 22:14:58,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 647 transitions, 12427 flow [2024-06-27 22:15:00,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 647 transitions, 12122 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-27 22:15:00,578 INFO L231 Difference]: Finished difference. Result has 470 places, 631 transitions, 10813 flow [2024-06-27 22:15:00,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10756, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10813, PETRI_PLACES=470, PETRI_TRANSITIONS=631} [2024-06-27 22:15:00,578 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 428 predicate places. [2024-06-27 22:15:00,578 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 631 transitions, 10813 flow [2024-06-27 22:15:00,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 22:15:00,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:00,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:00,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 22:15:00,579 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:00,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:00,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1677799608, now seen corresponding path program 20 times [2024-06-27 22:15:00,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:00,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473661176] [2024-06-27 22:15:00,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:00,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:02,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:02,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:02,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473661176] [2024-06-27 22:15:02,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473661176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:02,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:02,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:15:02,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529116555] [2024-06-27 22:15:02,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:02,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:15:02,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:02,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:15:02,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:15:02,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:15:02,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 631 transitions, 10813 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 22:15:02,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:02,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:15:02,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:03,581 INFO L124 PetriNetUnfolderBase]: 1275/2397 cut-off events. [2024-06-27 22:15:03,581 INFO L125 PetriNetUnfolderBase]: For 499586/499605 co-relation queries the response was YES. [2024-06-27 22:15:03,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27508 conditions, 2397 events. 1275/2397 cut-off events. For 499586/499605 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 14932 event pairs, 173 based on Foata normal form. 8/2185 useless extension candidates. Maximal degree in co-relation 27279. Up to 1247 conditions per place. [2024-06-27 22:15:03,623 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 331 selfloop transitions, 302 changer transitions 0/653 dead transitions. [2024-06-27 22:15:03,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 653 transitions, 13777 flow [2024-06-27 22:15:03,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:15:03,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:15:03,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-27 22:15:03,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2024-06-27 22:15:03,624 INFO L175 Difference]: Start difference. First operand has 470 places, 631 transitions, 10813 flow. Second operand 9 states and 174 transitions. [2024-06-27 22:15:03,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 653 transitions, 13777 flow [2024-06-27 22:15:06,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 653 transitions, 13664 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-27 22:15:06,428 INFO L231 Difference]: Finished difference. Result has 470 places, 640 transitions, 11903 flow [2024-06-27 22:15:06,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10700, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=295, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11903, PETRI_PLACES=470, PETRI_TRANSITIONS=640} [2024-06-27 22:15:06,428 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 428 predicate places. [2024-06-27 22:15:06,428 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 640 transitions, 11903 flow [2024-06-27 22:15:06,429 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 22:15:06,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:06,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:06,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 22:15:06,429 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:06,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:06,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1921062732, now seen corresponding path program 11 times [2024-06-27 22:15:06,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:06,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368900260] [2024-06-27 22:15:06,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:06,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:08,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:08,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:08,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368900260] [2024-06-27 22:15:08,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368900260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:08,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:08,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:15:08,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238572092] [2024-06-27 22:15:08,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:08,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:15:08,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:08,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:15:08,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:15:08,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:15:08,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 640 transitions, 11903 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:08,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:08,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:15:08,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:09,712 INFO L124 PetriNetUnfolderBase]: 1246/2374 cut-off events. [2024-06-27 22:15:09,713 INFO L125 PetriNetUnfolderBase]: For 493127/493148 co-relation queries the response was YES. [2024-06-27 22:15:09,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27972 conditions, 2374 events. 1246/2374 cut-off events. For 493127/493148 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 14906 event pairs, 126 based on Foata normal form. 1/2166 useless extension candidates. Maximal degree in co-relation 27742. Up to 1812 conditions per place. [2024-06-27 22:15:09,757 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 518 selfloop transitions, 111 changer transitions 0/649 dead transitions. [2024-06-27 22:15:09,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 649 transitions, 13181 flow [2024-06-27 22:15:09,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:15:09,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:15:09,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:15:09,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45263157894736844 [2024-06-27 22:15:09,758 INFO L175 Difference]: Start difference. First operand has 470 places, 640 transitions, 11903 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:15:09,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 649 transitions, 13181 flow [2024-06-27 22:15:12,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 649 transitions, 12841 flow, removed 64 selfloop flow, removed 3 redundant places. [2024-06-27 22:15:12,595 INFO L231 Difference]: Finished difference. Result has 477 places, 640 transitions, 11790 flow [2024-06-27 22:15:12,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11563, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11790, PETRI_PLACES=477, PETRI_TRANSITIONS=640} [2024-06-27 22:15:12,596 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 435 predicate places. [2024-06-27 22:15:12,596 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 640 transitions, 11790 flow [2024-06-27 22:15:12,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:12,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:12,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:12,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 22:15:12,596 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:12,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:12,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1807107158, now seen corresponding path program 1 times [2024-06-27 22:15:12,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:12,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719514710] [2024-06-27 22:15:12,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:12,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:13,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:13,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:13,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719514710] [2024-06-27 22:15:13,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719514710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:13,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:13,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:15:13,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728653136] [2024-06-27 22:15:13,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:13,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:15:13,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:13,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:15:13,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:15:13,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:15:13,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 640 transitions, 11790 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 22:15:13,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:13,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:15:13,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:15,163 INFO L124 PetriNetUnfolderBase]: 1601/2897 cut-off events. [2024-06-27 22:15:15,163 INFO L125 PetriNetUnfolderBase]: For 506343/506343 co-relation queries the response was YES. [2024-06-27 22:15:15,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32427 conditions, 2897 events. 1601/2897 cut-off events. For 506343/506343 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 17946 event pairs, 246 based on Foata normal form. 2/2708 useless extension candidates. Maximal degree in co-relation 32194. Up to 2454 conditions per place. [2024-06-27 22:15:15,214 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 570 selfloop transitions, 87 changer transitions 0/666 dead transitions. [2024-06-27 22:15:15,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 666 transitions, 13374 flow [2024-06-27 22:15:15,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:15:15,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:15:15,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:15:15,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-06-27 22:15:15,215 INFO L175 Difference]: Start difference. First operand has 477 places, 640 transitions, 11790 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:15:15,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 666 transitions, 13374 flow [2024-06-27 22:15:18,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 666 transitions, 13139 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 22:15:18,094 INFO L231 Difference]: Finished difference. Result has 478 places, 642 transitions, 11908 flow [2024-06-27 22:15:18,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11555, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11908, PETRI_PLACES=478, PETRI_TRANSITIONS=642} [2024-06-27 22:15:18,095 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 436 predicate places. [2024-06-27 22:15:18,095 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 642 transitions, 11908 flow [2024-06-27 22:15:18,095 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 22:15:18,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:18,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:18,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 22:15:18,095 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:18,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:18,096 INFO L85 PathProgramCache]: Analyzing trace with hash 215379512, now seen corresponding path program 2 times [2024-06-27 22:15:18,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:18,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028902071] [2024-06-27 22:15:18,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:18,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:19,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:19,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:19,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028902071] [2024-06-27 22:15:19,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028902071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:19,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:19,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:15:19,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541132317] [2024-06-27 22:15:19,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:19,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:15:19,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:19,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:15:19,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:15:19,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:15:19,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 642 transitions, 11908 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 22:15:19,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:19,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:15:19,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:20,355 INFO L124 PetriNetUnfolderBase]: 1628/2953 cut-off events. [2024-06-27 22:15:20,356 INFO L125 PetriNetUnfolderBase]: For 536564/536564 co-relation queries the response was YES. [2024-06-27 22:15:20,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33090 conditions, 2953 events. 1628/2953 cut-off events. For 536564/536564 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 18454 event pairs, 231 based on Foata normal form. 2/2761 useless extension candidates. Maximal degree in co-relation 32856. Up to 2487 conditions per place. [2024-06-27 22:15:20,407 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 582 selfloop transitions, 86 changer transitions 0/677 dead transitions. [2024-06-27 22:15:20,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 677 transitions, 13650 flow [2024-06-27 22:15:20,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:15:20,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:15:20,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 22:15:20,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44976076555023925 [2024-06-27 22:15:20,408 INFO L175 Difference]: Start difference. First operand has 478 places, 642 transitions, 11908 flow. Second operand 11 states and 188 transitions. [2024-06-27 22:15:20,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 677 transitions, 13650 flow [2024-06-27 22:15:23,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 677 transitions, 13321 flow, removed 81 selfloop flow, removed 9 redundant places. [2024-06-27 22:15:23,126 INFO L231 Difference]: Finished difference. Result has 481 places, 646 transitions, 12035 flow [2024-06-27 22:15:23,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11579, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12035, PETRI_PLACES=481, PETRI_TRANSITIONS=646} [2024-06-27 22:15:23,126 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 439 predicate places. [2024-06-27 22:15:23,126 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 646 transitions, 12035 flow [2024-06-27 22:15:23,126 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 22:15:23,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:23,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:23,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 22:15:23,127 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:23,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:23,128 INFO L85 PathProgramCache]: Analyzing trace with hash 2021517810, now seen corresponding path program 3 times [2024-06-27 22:15:23,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:23,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858872906] [2024-06-27 22:15:23,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:23,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:24,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:24,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:24,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858872906] [2024-06-27 22:15:24,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858872906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:24,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:24,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:15:24,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201786052] [2024-06-27 22:15:24,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:24,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:15:24,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:24,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:15:24,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:15:24,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:15:24,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 646 transitions, 12035 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 22:15:24,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:24,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:15:24,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:25,516 INFO L124 PetriNetUnfolderBase]: 1648/2991 cut-off events. [2024-06-27 22:15:25,516 INFO L125 PetriNetUnfolderBase]: For 532079/532079 co-relation queries the response was YES. [2024-06-27 22:15:25,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33363 conditions, 2991 events. 1648/2991 cut-off events. For 532079/532079 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 18725 event pairs, 256 based on Foata normal form. 2/2801 useless extension candidates. Maximal degree in co-relation 33127. Up to 2534 conditions per place. [2024-06-27 22:15:25,569 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 573 selfloop transitions, 96 changer transitions 0/678 dead transitions. [2024-06-27 22:15:25,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 678 transitions, 13683 flow [2024-06-27 22:15:25,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:15:25,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:15:25,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:15:25,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-06-27 22:15:25,571 INFO L175 Difference]: Start difference. First operand has 481 places, 646 transitions, 12035 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:15:25,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 678 transitions, 13683 flow [2024-06-27 22:15:29,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 678 transitions, 13315 flow, removed 128 selfloop flow, removed 7 redundant places. [2024-06-27 22:15:29,031 INFO L231 Difference]: Finished difference. Result has 485 places, 650 transitions, 12060 flow [2024-06-27 22:15:29,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11667, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12060, PETRI_PLACES=485, PETRI_TRANSITIONS=650} [2024-06-27 22:15:29,031 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 443 predicate places. [2024-06-27 22:15:29,031 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 650 transitions, 12060 flow [2024-06-27 22:15:29,031 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 22:15:29,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:29,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:29,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 22:15:29,032 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:29,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:29,032 INFO L85 PathProgramCache]: Analyzing trace with hash 675451732, now seen corresponding path program 4 times [2024-06-27 22:15:29,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:29,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846437451] [2024-06-27 22:15:29,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:29,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:29,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:29,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:29,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846437451] [2024-06-27 22:15:29,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846437451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:29,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:29,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:15:29,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387396893] [2024-06-27 22:15:29,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:29,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:15:29,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:29,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:15:29,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:15:29,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:15:29,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 650 transitions, 12060 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:29,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:29,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:15:29,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:31,173 INFO L124 PetriNetUnfolderBase]: 1624/2997 cut-off events. [2024-06-27 22:15:31,174 INFO L125 PetriNetUnfolderBase]: For 556960/556973 co-relation queries the response was YES. [2024-06-27 22:15:31,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32589 conditions, 2997 events. 1624/2997 cut-off events. For 556960/556973 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 19136 event pairs, 170 based on Foata normal form. 6/2803 useless extension candidates. Maximal degree in co-relation 32351. Up to 1900 conditions per place. [2024-06-27 22:15:31,230 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 432 selfloop transitions, 88 changer transitions 0/687 dead transitions. [2024-06-27 22:15:31,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 687 transitions, 13622 flow [2024-06-27 22:15:31,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:15:31,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:15:31,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-27 22:15:31,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880382775119617 [2024-06-27 22:15:31,231 INFO L175 Difference]: Start difference. First operand has 485 places, 650 transitions, 12060 flow. Second operand 11 states and 204 transitions. [2024-06-27 22:15:31,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 687 transitions, 13622 flow [2024-06-27 22:15:34,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 687 transitions, 13273 flow, removed 83 selfloop flow, removed 9 redundant places. [2024-06-27 22:15:34,748 INFO L231 Difference]: Finished difference. Result has 488 places, 657 transitions, 12337 flow [2024-06-27 22:15:34,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11711, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12337, PETRI_PLACES=488, PETRI_TRANSITIONS=657} [2024-06-27 22:15:34,749 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 446 predicate places. [2024-06-27 22:15:34,749 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 657 transitions, 12337 flow [2024-06-27 22:15:34,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:34,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:34,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:34,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 22:15:34,749 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:34,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:34,750 INFO L85 PathProgramCache]: Analyzing trace with hash -101552658, now seen corresponding path program 5 times [2024-06-27 22:15:34,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:34,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449542113] [2024-06-27 22:15:34,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:34,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:35,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:35,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:35,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449542113] [2024-06-27 22:15:35,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449542113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:35,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:35,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:15:35,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982780511] [2024-06-27 22:15:35,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:35,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:15:35,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:35,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:15:35,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:15:36,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:15:36,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 657 transitions, 12337 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 22:15:36,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:36,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:15:36,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:37,342 INFO L124 PetriNetUnfolderBase]: 1726/3135 cut-off events. [2024-06-27 22:15:37,342 INFO L125 PetriNetUnfolderBase]: For 572160/572160 co-relation queries the response was YES. [2024-06-27 22:15:37,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34981 conditions, 3135 events. 1726/3135 cut-off events. For 572160/572160 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 19980 event pairs, 276 based on Foata normal form. 2/2939 useless extension candidates. Maximal degree in co-relation 34741. Up to 2633 conditions per place. [2024-06-27 22:15:37,401 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 599 selfloop transitions, 90 changer transitions 0/698 dead transitions. [2024-06-27 22:15:37,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 698 transitions, 14471 flow [2024-06-27 22:15:37,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:15:37,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:15:37,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 22:15:37,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44976076555023925 [2024-06-27 22:15:37,403 INFO L175 Difference]: Start difference. First operand has 488 places, 657 transitions, 12337 flow. Second operand 11 states and 188 transitions. [2024-06-27 22:15:37,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 698 transitions, 14471 flow [2024-06-27 22:15:41,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 698 transitions, 13716 flow, removed 346 selfloop flow, removed 6 redundant places. [2024-06-27 22:15:41,182 INFO L231 Difference]: Finished difference. Result has 494 places, 669 transitions, 12439 flow [2024-06-27 22:15:41,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11926, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12439, PETRI_PLACES=494, PETRI_TRANSITIONS=669} [2024-06-27 22:15:41,182 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 452 predicate places. [2024-06-27 22:15:41,183 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 669 transitions, 12439 flow [2024-06-27 22:15:41,183 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 22:15:41,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:41,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:41,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 22:15:41,183 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:41,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:41,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1296857520, now seen corresponding path program 6 times [2024-06-27 22:15:41,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:41,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873696965] [2024-06-27 22:15:41,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:41,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:42,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:42,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:42,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873696965] [2024-06-27 22:15:42,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873696965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:42,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:42,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:15:42,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621740123] [2024-06-27 22:15:42,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:42,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:15:42,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:42,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:15:42,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:15:42,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:15:42,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 669 transitions, 12439 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 22:15:42,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:42,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:15:42,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:43,981 INFO L124 PetriNetUnfolderBase]: 1753/3188 cut-off events. [2024-06-27 22:15:43,981 INFO L125 PetriNetUnfolderBase]: For 558937/558937 co-relation queries the response was YES. [2024-06-27 22:15:44,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34761 conditions, 3188 events. 1753/3188 cut-off events. For 558937/558937 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 20444 event pairs, 296 based on Foata normal form. 2/2991 useless extension candidates. Maximal degree in co-relation 34519. Up to 2716 conditions per place. [2024-06-27 22:15:44,041 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 598 selfloop transitions, 94 changer transitions 0/701 dead transitions. [2024-06-27 22:15:44,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 701 transitions, 14151 flow [2024-06-27 22:15:44,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:15:44,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:15:44,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:15:44,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-06-27 22:15:44,042 INFO L175 Difference]: Start difference. First operand has 494 places, 669 transitions, 12439 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:15:44,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 701 transitions, 14151 flow [2024-06-27 22:15:47,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 701 transitions, 13789 flow, removed 101 selfloop flow, removed 8 redundant places. [2024-06-27 22:15:47,715 INFO L231 Difference]: Finished difference. Result has 497 places, 675 transitions, 12502 flow [2024-06-27 22:15:47,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12077, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12502, PETRI_PLACES=497, PETRI_TRANSITIONS=675} [2024-06-27 22:15:47,715 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 455 predicate places. [2024-06-27 22:15:47,716 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 675 transitions, 12502 flow [2024-06-27 22:15:47,716 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 22:15:47,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:47,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:47,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 22:15:47,716 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:47,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:47,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1160116830, now seen corresponding path program 7 times [2024-06-27 22:15:47,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:47,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693192362] [2024-06-27 22:15:47,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:47,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:49,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:49,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:49,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693192362] [2024-06-27 22:15:49,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693192362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:49,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:49,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:15:49,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555585515] [2024-06-27 22:15:49,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:49,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:15:49,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:49,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:15:49,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:15:49,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:15:49,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 675 transitions, 12502 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 22:15:49,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:49,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:15:49,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:50,726 INFO L124 PetriNetUnfolderBase]: 1766/3213 cut-off events. [2024-06-27 22:15:50,726 INFO L125 PetriNetUnfolderBase]: For 568223/568223 co-relation queries the response was YES. [2024-06-27 22:15:50,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34973 conditions, 3213 events. 1766/3213 cut-off events. For 568223/568223 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 20674 event pairs, 289 based on Foata normal form. 2/3015 useless extension candidates. Maximal degree in co-relation 34730. Up to 2727 conditions per place. [2024-06-27 22:15:50,779 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 584 selfloop transitions, 110 changer transitions 0/703 dead transitions. [2024-06-27 22:15:50,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 703 transitions, 14198 flow [2024-06-27 22:15:50,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:15:50,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:15:50,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:15:50,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-06-27 22:15:50,781 INFO L175 Difference]: Start difference. First operand has 497 places, 675 transitions, 12502 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:15:50,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 703 transitions, 14198 flow [2024-06-27 22:15:54,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 703 transitions, 13870 flow, removed 83 selfloop flow, removed 8 redundant places. [2024-06-27 22:15:54,538 INFO L231 Difference]: Finished difference. Result has 500 places, 677 transitions, 12592 flow [2024-06-27 22:15:54,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12174, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12592, PETRI_PLACES=500, PETRI_TRANSITIONS=677} [2024-06-27 22:15:54,538 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 458 predicate places. [2024-06-27 22:15:54,538 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 677 transitions, 12592 flow [2024-06-27 22:15:54,539 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 22:15:54,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:54,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:54,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 22:15:54,539 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:54,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:54,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1124159868, now seen corresponding path program 1 times [2024-06-27 22:15:54,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:54,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782313385] [2024-06-27 22:15:54,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:54,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:56,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:56,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:56,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782313385] [2024-06-27 22:15:56,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782313385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:56,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:56,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:15:56,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728221438] [2024-06-27 22:15:56,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:56,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:15:56,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:56,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:15:56,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:15:56,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:15:56,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 677 transitions, 12592 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:56,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:56,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:15:56,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:57,699 INFO L124 PetriNetUnfolderBase]: 1419/2712 cut-off events. [2024-06-27 22:15:57,699 INFO L125 PetriNetUnfolderBase]: For 567241/567260 co-relation queries the response was YES. [2024-06-27 22:15:57,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31094 conditions, 2712 events. 1419/2712 cut-off events. For 567241/567260 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 17826 event pairs, 227 based on Foata normal form. 7/2503 useless extension candidates. Maximal degree in co-relation 30850. Up to 2040 conditions per place. [2024-06-27 22:15:57,751 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 493 selfloop transitions, 184 changer transitions 0/698 dead transitions. [2024-06-27 22:15:57,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 698 transitions, 14550 flow [2024-06-27 22:15:57,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:15:57,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:15:57,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:15:57,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-27 22:15:57,752 INFO L175 Difference]: Start difference. First operand has 500 places, 677 transitions, 12592 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:15:57,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 698 transitions, 14550 flow [2024-06-27 22:16:01,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 698 transitions, 14166 flow, removed 91 selfloop flow, removed 8 redundant places. [2024-06-27 22:16:01,151 INFO L231 Difference]: Finished difference. Result has 503 places, 681 transitions, 12822 flow [2024-06-27 22:16:01,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12208, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12822, PETRI_PLACES=503, PETRI_TRANSITIONS=681} [2024-06-27 22:16:01,151 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 461 predicate places. [2024-06-27 22:16:01,151 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 681 transitions, 12822 flow [2024-06-27 22:16:01,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:01,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:01,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:01,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 22:16:01,152 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:01,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:01,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1122931059, now seen corresponding path program 1 times [2024-06-27 22:16:01,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:01,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613397209] [2024-06-27 22:16:01,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:01,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:02,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:02,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:02,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613397209] [2024-06-27 22:16:02,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613397209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:02,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:02,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:16:02,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360595804] [2024-06-27 22:16:02,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:02,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:16:02,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:02,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:16:02,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:16:03,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:16:03,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 681 transitions, 12822 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:03,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:03,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:16:03,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:04,129 INFO L124 PetriNetUnfolderBase]: 1436/2729 cut-off events. [2024-06-27 22:16:04,129 INFO L125 PetriNetUnfolderBase]: For 588668/588697 co-relation queries the response was YES. [2024-06-27 22:16:04,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31395 conditions, 2729 events. 1436/2729 cut-off events. For 588668/588697 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 17853 event pairs, 228 based on Foata normal form. 10/2508 useless extension candidates. Maximal degree in co-relation 31150. Up to 2091 conditions per place. [2024-06-27 22:16:04,181 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 495 selfloop transitions, 185 changer transitions 0/701 dead transitions. [2024-06-27 22:16:04,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 701 transitions, 14422 flow [2024-06-27 22:16:04,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:16:04,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:16:04,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:16:04,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4449760765550239 [2024-06-27 22:16:04,182 INFO L175 Difference]: Start difference. First operand has 503 places, 681 transitions, 12822 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:16:04,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 701 transitions, 14422 flow [2024-06-27 22:16:07,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 701 transitions, 14068 flow, removed 60 selfloop flow, removed 7 redundant places. [2024-06-27 22:16:07,502 INFO L231 Difference]: Finished difference. Result has 507 places, 685 transitions, 13054 flow [2024-06-27 22:16:07,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12468, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13054, PETRI_PLACES=507, PETRI_TRANSITIONS=685} [2024-06-27 22:16:07,503 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 465 predicate places. [2024-06-27 22:16:07,503 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 685 transitions, 13054 flow [2024-06-27 22:16:07,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:07,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:07,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:07,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 22:16:07,504 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:07,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:07,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1122939708, now seen corresponding path program 2 times [2024-06-27 22:16:07,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:07,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582807003] [2024-06-27 22:16:07,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:07,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:09,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:09,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:09,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582807003] [2024-06-27 22:16:09,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582807003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:09,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:09,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:16:09,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241622707] [2024-06-27 22:16:09,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:09,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:16:09,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:09,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:16:09,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:16:09,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:16:09,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 685 transitions, 13054 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:09,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:09,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:16:09,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:10,467 INFO L124 PetriNetUnfolderBase]: 1455/2759 cut-off events. [2024-06-27 22:16:10,467 INFO L125 PetriNetUnfolderBase]: For 580144/580159 co-relation queries the response was YES. [2024-06-27 22:16:10,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32191 conditions, 2759 events. 1455/2759 cut-off events. For 580144/580159 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 18075 event pairs, 228 based on Foata normal form. 8/2523 useless extension candidates. Maximal degree in co-relation 31945. Up to 2067 conditions per place. [2024-06-27 22:16:10,519 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 484 selfloop transitions, 200 changer transitions 0/706 dead transitions. [2024-06-27 22:16:10,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 706 transitions, 15026 flow [2024-06-27 22:16:10,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:16:10,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:16:10,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 22:16:10,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48947368421052634 [2024-06-27 22:16:10,520 INFO L175 Difference]: Start difference. First operand has 507 places, 685 transitions, 13054 flow. Second operand 10 states and 186 transitions. [2024-06-27 22:16:10,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 706 transitions, 15026 flow [2024-06-27 22:16:13,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 706 transitions, 14376 flow, removed 143 selfloop flow, removed 9 redundant places. [2024-06-27 22:16:13,943 INFO L231 Difference]: Finished difference. Result has 508 places, 689 transitions, 13040 flow [2024-06-27 22:16:13,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12404, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13040, PETRI_PLACES=508, PETRI_TRANSITIONS=689} [2024-06-27 22:16:13,944 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 466 predicate places. [2024-06-27 22:16:13,944 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 689 transitions, 13040 flow [2024-06-27 22:16:13,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:13,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:13,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:13,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 22:16:13,944 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:13,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:13,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1381903450, now seen corresponding path program 8 times [2024-06-27 22:16:13,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:13,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168294376] [2024-06-27 22:16:13,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:13,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:15,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:15,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:15,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168294376] [2024-06-27 22:16:15,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168294376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:15,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:15,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:16:15,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992754323] [2024-06-27 22:16:15,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:15,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:16:15,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:15,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:16:15,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:16:15,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:16:15,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 689 transitions, 13040 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 22:16:15,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:15,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:16:15,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:16,662 INFO L124 PetriNetUnfolderBase]: 1872/3407 cut-off events. [2024-06-27 22:16:16,662 INFO L125 PetriNetUnfolderBase]: For 590696/590696 co-relation queries the response was YES. [2024-06-27 22:16:16,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36597 conditions, 3407 events. 1872/3407 cut-off events. For 590696/590696 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 22310 event pairs, 322 based on Foata normal form. 2/3195 useless extension candidates. Maximal degree in co-relation 36350. Up to 2867 conditions per place. [2024-06-27 22:16:16,727 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 632 selfloop transitions, 91 changer transitions 0/732 dead transitions. [2024-06-27 22:16:16,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 732 transitions, 14950 flow [2024-06-27 22:16:16,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:16:16,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:16:16,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 22:16:16,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44976076555023925 [2024-06-27 22:16:16,729 INFO L175 Difference]: Start difference. First operand has 508 places, 689 transitions, 13040 flow. Second operand 11 states and 188 transitions. [2024-06-27 22:16:16,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 732 transitions, 14950 flow [2024-06-27 22:16:20,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 732 transitions, 14576 flow, removed 58 selfloop flow, removed 6 redundant places. [2024-06-27 22:16:20,834 INFO L231 Difference]: Finished difference. Result has 514 places, 705 transitions, 13258 flow [2024-06-27 22:16:20,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12666, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13258, PETRI_PLACES=514, PETRI_TRANSITIONS=705} [2024-06-27 22:16:20,835 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 472 predicate places. [2024-06-27 22:16:20,835 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 705 transitions, 13258 flow [2024-06-27 22:16:20,835 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 22:16:20,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:20,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:20,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 22:16:20,835 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:20,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:20,836 INFO L85 PathProgramCache]: Analyzing trace with hash -2016120116, now seen corresponding path program 9 times [2024-06-27 22:16:20,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:20,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760757076] [2024-06-27 22:16:20,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:20,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:22,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:22,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:22,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760757076] [2024-06-27 22:16:22,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760757076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:22,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:22,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:16:22,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908325288] [2024-06-27 22:16:22,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:22,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:16:22,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:22,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:16:22,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:16:22,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:16:22,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 705 transitions, 13258 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 22:16:22,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:22,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:16:22,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:23,646 INFO L124 PetriNetUnfolderBase]: 1892/3448 cut-off events. [2024-06-27 22:16:23,646 INFO L125 PetriNetUnfolderBase]: For 605115/605115 co-relation queries the response was YES. [2024-06-27 22:16:23,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37320 conditions, 3448 events. 1892/3448 cut-off events. For 605115/605115 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 22691 event pairs, 336 based on Foata normal form. 2/3237 useless extension candidates. Maximal degree in co-relation 37069. Up to 2944 conditions per place. [2024-06-27 22:16:23,715 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 624 selfloop transitions, 100 changer transitions 0/733 dead transitions. [2024-06-27 22:16:23,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 733 transitions, 15018 flow [2024-06-27 22:16:23,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:16:23,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:16:23,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 22:16:23,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4631578947368421 [2024-06-27 22:16:23,716 INFO L175 Difference]: Start difference. First operand has 514 places, 705 transitions, 13258 flow. Second operand 10 states and 176 transitions. [2024-06-27 22:16:23,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 733 transitions, 15018 flow [2024-06-27 22:16:27,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 733 transitions, 14651 flow, removed 105 selfloop flow, removed 8 redundant places. [2024-06-27 22:16:27,819 INFO L231 Difference]: Finished difference. Result has 516 places, 709 transitions, 13311 flow [2024-06-27 22:16:27,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12891, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13311, PETRI_PLACES=516, PETRI_TRANSITIONS=709} [2024-06-27 22:16:27,819 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 474 predicate places. [2024-06-27 22:16:27,819 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 709 transitions, 13311 flow [2024-06-27 22:16:27,820 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 22:16:27,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:27,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:27,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 22:16:27,820 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:27,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:27,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1203979888, now seen corresponding path program 10 times [2024-06-27 22:16:27,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:27,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306121471] [2024-06-27 22:16:27,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:27,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:29,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:29,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:29,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306121471] [2024-06-27 22:16:29,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306121471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:29,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:29,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:16:29,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926874771] [2024-06-27 22:16:29,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:29,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:16:29,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:29,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:16:29,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:16:29,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:16:29,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 709 transitions, 13311 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 22:16:29,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:29,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:16:29,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:30,628 INFO L124 PetriNetUnfolderBase]: 1905/3474 cut-off events. [2024-06-27 22:16:30,628 INFO L125 PetriNetUnfolderBase]: For 613747/613747 co-relation queries the response was YES. [2024-06-27 22:16:30,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37527 conditions, 3474 events. 1905/3474 cut-off events. For 613747/613747 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 22900 event pairs, 312 based on Foata normal form. 2/3262 useless extension candidates. Maximal degree in co-relation 37276. Up to 2924 conditions per place. [2024-06-27 22:16:30,695 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 594 selfloop transitions, 132 changer transitions 0/735 dead transitions. [2024-06-27 22:16:30,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 735 transitions, 15077 flow [2024-06-27 22:16:30,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:16:30,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:16:30,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 22:16:30,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-06-27 22:16:30,697 INFO L175 Difference]: Start difference. First operand has 516 places, 709 transitions, 13311 flow. Second operand 10 states and 175 transitions. [2024-06-27 22:16:30,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 735 transitions, 15077 flow [2024-06-27 22:16:34,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 735 transitions, 14699 flow, removed 93 selfloop flow, removed 8 redundant places. [2024-06-27 22:16:34,742 INFO L231 Difference]: Finished difference. Result has 518 places, 711 transitions, 13406 flow [2024-06-27 22:16:34,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12933, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13406, PETRI_PLACES=518, PETRI_TRANSITIONS=711} [2024-06-27 22:16:34,742 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 476 predicate places. [2024-06-27 22:16:34,742 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 711 transitions, 13406 flow [2024-06-27 22:16:34,743 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 22:16:34,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:34,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:34,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 22:16:34,743 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:34,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:34,744 INFO L85 PathProgramCache]: Analyzing trace with hash -286747486, now seen corresponding path program 3 times [2024-06-27 22:16:34,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:34,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075332737] [2024-06-27 22:16:34,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:34,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:36,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:36,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075332737] [2024-06-27 22:16:36,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075332737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:36,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:36,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:16:36,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491954491] [2024-06-27 22:16:36,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:36,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:16:36,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:36,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:16:36,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:16:36,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:16:36,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 711 transitions, 13406 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:36,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:36,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:16:36,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:37,596 INFO L124 PetriNetUnfolderBase]: 1536/2932 cut-off events. [2024-06-27 22:16:37,596 INFO L125 PetriNetUnfolderBase]: For 575641/575671 co-relation queries the response was YES. [2024-06-27 22:16:37,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32650 conditions, 2932 events. 1536/2932 cut-off events. For 575641/575671 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 19752 event pairs, 261 based on Foata normal form. 7/2698 useless extension candidates. Maximal degree in co-relation 32399. Up to 2330 conditions per place. [2024-06-27 22:16:37,653 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 536 selfloop transitions, 168 changer transitions 0/726 dead transitions. [2024-06-27 22:16:37,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 726 transitions, 14868 flow [2024-06-27 22:16:37,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:16:37,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:16:37,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 22:16:37,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 22:16:37,654 INFO L175 Difference]: Start difference. First operand has 518 places, 711 transitions, 13406 flow. Second operand 10 states and 180 transitions. [2024-06-27 22:16:37,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 726 transitions, 14868 flow [2024-06-27 22:16:41,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 726 transitions, 14347 flow, removed 131 selfloop flow, removed 8 redundant places. [2024-06-27 22:16:41,434 INFO L231 Difference]: Finished difference. Result has 520 places, 712 transitions, 13253 flow [2024-06-27 22:16:41,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12891, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=711, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13253, PETRI_PLACES=520, PETRI_TRANSITIONS=712} [2024-06-27 22:16:41,434 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 478 predicate places. [2024-06-27 22:16:41,434 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 712 transitions, 13253 flow [2024-06-27 22:16:41,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:41,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:41,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:41,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 22:16:41,435 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:41,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:41,435 INFO L85 PathProgramCache]: Analyzing trace with hash -281435047, now seen corresponding path program 2 times [2024-06-27 22:16:41,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:41,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445685928] [2024-06-27 22:16:41,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:41,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:43,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:43,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:43,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445685928] [2024-06-27 22:16:43,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445685928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:43,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:43,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:16:43,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303046915] [2024-06-27 22:16:43,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:43,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:16:43,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:43,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:16:43,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:16:43,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:16:43,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 712 transitions, 13253 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:43,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:43,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:16:43,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:44,841 INFO L124 PetriNetUnfolderBase]: 1545/2939 cut-off events. [2024-06-27 22:16:44,841 INFO L125 PetriNetUnfolderBase]: For 576581/576607 co-relation queries the response was YES. [2024-06-27 22:16:44,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32386 conditions, 2939 events. 1545/2939 cut-off events. For 576581/576607 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 19741 event pairs, 259 based on Foata normal form. 8/2699 useless extension candidates. Maximal degree in co-relation 32133. Up to 2312 conditions per place. [2024-06-27 22:16:44,891 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 526 selfloop transitions, 181 changer transitions 0/728 dead transitions. [2024-06-27 22:16:44,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 728 transitions, 14825 flow [2024-06-27 22:16:44,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:16:44,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:16:44,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:16:44,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4449760765550239 [2024-06-27 22:16:44,892 INFO L175 Difference]: Start difference. First operand has 520 places, 712 transitions, 13253 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:16:44,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 728 transitions, 14825 flow [2024-06-27 22:16:48,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 728 transitions, 14369 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 22:16:48,730 INFO L231 Difference]: Finished difference. Result has 522 places, 714 transitions, 13295 flow [2024-06-27 22:16:48,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12797, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13295, PETRI_PLACES=522, PETRI_TRANSITIONS=714} [2024-06-27 22:16:48,731 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 480 predicate places. [2024-06-27 22:16:48,731 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 714 transitions, 13295 flow [2024-06-27 22:16:48,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:48,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:48,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:48,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 22:16:48,731 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:48,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:48,732 INFO L85 PathProgramCache]: Analyzing trace with hash -88130176, now seen corresponding path program 4 times [2024-06-27 22:16:48,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:48,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511887529] [2024-06-27 22:16:48,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:48,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:50,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:50,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:50,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511887529] [2024-06-27 22:16:50,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511887529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:50,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:50,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:16:50,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134556542] [2024-06-27 22:16:50,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:50,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:16:50,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:50,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:16:50,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:16:51,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:16:51,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 714 transitions, 13295 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:51,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:51,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:16:51,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:52,334 INFO L124 PetriNetUnfolderBase]: 1531/2932 cut-off events. [2024-06-27 22:16:52,334 INFO L125 PetriNetUnfolderBase]: For 587099/587129 co-relation queries the response was YES. [2024-06-27 22:16:52,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32432 conditions, 2932 events. 1531/2932 cut-off events. For 587099/587129 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 19824 event pairs, 241 based on Foata normal form. 13/2719 useless extension candidates. Maximal degree in co-relation 32178. Up to 2060 conditions per place. [2024-06-27 22:16:52,390 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 436 selfloop transitions, 276 changer transitions 0/733 dead transitions. [2024-06-27 22:16:52,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 733 transitions, 15345 flow [2024-06-27 22:16:52,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:16:52,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:16:52,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:16:52,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-27 22:16:52,391 INFO L175 Difference]: Start difference. First operand has 522 places, 714 transitions, 13295 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:16:52,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 733 transitions, 15345 flow [2024-06-27 22:16:56,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 733 transitions, 14863 flow, removed 63 selfloop flow, removed 9 redundant places. [2024-06-27 22:16:56,516 INFO L231 Difference]: Finished difference. Result has 524 places, 718 transitions, 13614 flow [2024-06-27 22:16:56,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12813, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=714, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13614, PETRI_PLACES=524, PETRI_TRANSITIONS=718} [2024-06-27 22:16:56,516 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 482 predicate places. [2024-06-27 22:16:56,516 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 718 transitions, 13614 flow [2024-06-27 22:16:56,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:56,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:56,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:56,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 22:16:56,517 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:56,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:56,517 INFO L85 PathProgramCache]: Analyzing trace with hash 373785889, now seen corresponding path program 3 times [2024-06-27 22:16:56,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:56,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216326851] [2024-06-27 22:16:56,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:56,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:58,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:58,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:58,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216326851] [2024-06-27 22:16:58,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216326851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:58,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:58,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:16:58,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167634454] [2024-06-27 22:16:58,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:58,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:16:58,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:58,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:16:58,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:16:58,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:16:58,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 718 transitions, 13614 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:58,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:58,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:16:58,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:00,030 INFO L124 PetriNetUnfolderBase]: 1554/2954 cut-off events. [2024-06-27 22:17:00,030 INFO L125 PetriNetUnfolderBase]: For 591820/591879 co-relation queries the response was YES. [2024-06-27 22:17:00,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33003 conditions, 2954 events. 1554/2954 cut-off events. For 591820/591879 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 19820 event pairs, 251 based on Foata normal form. 11/2726 useless extension candidates. Maximal degree in co-relation 32748. Up to 2239 conditions per place. [2024-06-27 22:17:00,088 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 508 selfloop transitions, 207 changer transitions 0/736 dead transitions. [2024-06-27 22:17:00,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 736 transitions, 15523 flow [2024-06-27 22:17:00,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:17:00,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:17:00,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 22:17:00,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45215311004784686 [2024-06-27 22:17:00,089 INFO L175 Difference]: Start difference. First operand has 524 places, 718 transitions, 13614 flow. Second operand 11 states and 189 transitions. [2024-06-27 22:17:00,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 736 transitions, 15523 flow [2024-06-27 22:17:04,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 736 transitions, 15054 flow, removed 59 selfloop flow, removed 7 redundant places. [2024-06-27 22:17:04,089 INFO L231 Difference]: Finished difference. Result has 528 places, 720 transitions, 13640 flow [2024-06-27 22:17:04,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13145, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13640, PETRI_PLACES=528, PETRI_TRANSITIONS=720} [2024-06-27 22:17:04,089 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 486 predicate places. [2024-06-27 22:17:04,089 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 720 transitions, 13640 flow [2024-06-27 22:17:04,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:04,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:04,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:04,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 22:17:04,090 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:17:04,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:04,091 INFO L85 PathProgramCache]: Analyzing trace with hash 143819860, now seen corresponding path program 5 times [2024-06-27 22:17:04,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:04,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042921929] [2024-06-27 22:17:04,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:04,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:06,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:06,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:06,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042921929] [2024-06-27 22:17:06,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042921929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:06,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:06,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:17:06,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792078470] [2024-06-27 22:17:06,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:06,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:17:06,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:06,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:17:06,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:17:06,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:17:06,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 720 transitions, 13640 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:06,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:06,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:17:06,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:08,355 INFO L124 PetriNetUnfolderBase]: 1599/3029 cut-off events. [2024-06-27 22:17:08,355 INFO L125 PetriNetUnfolderBase]: For 661324/661350 co-relation queries the response was YES. [2024-06-27 22:17:08,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35118 conditions, 3029 events. 1599/3029 cut-off events. For 661324/661350 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 20371 event pairs, 260 based on Foata normal form. 7/2769 useless extension candidates. Maximal degree in co-relation 34861. Up to 2350 conditions per place. [2024-06-27 22:17:08,416 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 536 selfloop transitions, 187 changer transitions 0/744 dead transitions. [2024-06-27 22:17:08,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 744 transitions, 16304 flow [2024-06-27 22:17:08,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:17:08,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:17:08,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 22:17:08,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 22:17:08,417 INFO L175 Difference]: Start difference. First operand has 528 places, 720 transitions, 13640 flow. Second operand 11 states and 190 transitions. [2024-06-27 22:17:08,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 744 transitions, 16304 flow [2024-06-27 22:17:12,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 744 transitions, 15864 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 22:17:12,508 INFO L231 Difference]: Finished difference. Result has 531 places, 728 transitions, 14064 flow [2024-06-27 22:17:12,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13200, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=720, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14064, PETRI_PLACES=531, PETRI_TRANSITIONS=728} [2024-06-27 22:17:12,509 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 489 predicate places. [2024-06-27 22:17:12,509 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 728 transitions, 14064 flow [2024-06-27 22:17:12,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:12,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:12,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:12,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 22:17:12,509 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:17:12,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:12,509 INFO L85 PathProgramCache]: Analyzing trace with hash -88120256, now seen corresponding path program 1 times [2024-06-27 22:17:12,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:12,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069924798] [2024-06-27 22:17:12,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:12,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:14,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:14,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:14,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069924798] [2024-06-27 22:17:14,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069924798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:14,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:14,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:17:14,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797502150] [2024-06-27 22:17:14,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:14,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:17:14,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:14,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:17:14,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:17:14,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:17:14,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 728 transitions, 14064 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:14,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:14,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:17:14,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:16,241 INFO L124 PetriNetUnfolderBase]: 1629/3081 cut-off events. [2024-06-27 22:17:16,241 INFO L125 PetriNetUnfolderBase]: For 687807/687847 co-relation queries the response was YES. [2024-06-27 22:17:16,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35623 conditions, 3081 events. 1629/3081 cut-off events. For 687807/687847 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 20678 event pairs, 299 based on Foata normal form. 6/2816 useless extension candidates. Maximal degree in co-relation 35365. Up to 2602 conditions per place. [2024-06-27 22:17:16,301 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 672 selfloop transitions, 54 changer transitions 0/747 dead transitions. [2024-06-27 22:17:16,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 747 transitions, 15706 flow [2024-06-27 22:17:16,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:17:16,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:17:16,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:17:16,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43301435406698563 [2024-06-27 22:17:16,302 INFO L175 Difference]: Start difference. First operand has 531 places, 728 transitions, 14064 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:17:16,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 747 transitions, 15706 flow [2024-06-27 22:17:20,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 747 transitions, 15361 flow, removed 76 selfloop flow, removed 6 redundant places. [2024-06-27 22:17:20,901 INFO L231 Difference]: Finished difference. Result has 536 places, 729 transitions, 13871 flow [2024-06-27 22:17:20,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13719, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=674, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13871, PETRI_PLACES=536, PETRI_TRANSITIONS=729} [2024-06-27 22:17:20,901 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 494 predicate places. [2024-06-27 22:17:20,901 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 729 transitions, 13871 flow [2024-06-27 22:17:20,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:20,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:20,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:20,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 22:17:20,902 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:17:20,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:20,903 INFO L85 PathProgramCache]: Analyzing trace with hash -317184526, now seen corresponding path program 6 times [2024-06-27 22:17:20,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:20,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674674809] [2024-06-27 22:17:20,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:20,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:22,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:22,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:22,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674674809] [2024-06-27 22:17:22,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674674809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:22,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:22,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:17:22,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719072009] [2024-06-27 22:17:22,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:22,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:17:22,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:22,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:17:22,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:17:22,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:17:22,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 729 transitions, 13871 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:22,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:22,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:17:22,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:24,217 INFO L124 PetriNetUnfolderBase]: 1611/3060 cut-off events. [2024-06-27 22:17:24,217 INFO L125 PetriNetUnfolderBase]: For 652723/652753 co-relation queries the response was YES. [2024-06-27 22:17:24,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34809 conditions, 3060 events. 1611/3060 cut-off events. For 652723/652753 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 20668 event pairs, 264 based on Foata normal form. 8/2798 useless extension candidates. Maximal degree in co-relation 34549. Up to 2376 conditions per place. [2024-06-27 22:17:24,273 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 532 selfloop transitions, 191 changer transitions 0/744 dead transitions. [2024-06-27 22:17:24,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 744 transitions, 15711 flow [2024-06-27 22:17:24,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:17:24,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:17:24,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 22:17:24,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46578947368421053 [2024-06-27 22:17:24,274 INFO L175 Difference]: Start difference. First operand has 536 places, 729 transitions, 13871 flow. Second operand 10 states and 177 transitions. [2024-06-27 22:17:24,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 744 transitions, 15711 flow [2024-06-27 22:17:28,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 744 transitions, 15427 flow, removed 90 selfloop flow, removed 8 redundant places. [2024-06-27 22:17:28,612 INFO L231 Difference]: Finished difference. Result has 538 places, 729 transitions, 13977 flow [2024-06-27 22:17:28,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13587, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13977, PETRI_PLACES=538, PETRI_TRANSITIONS=729} [2024-06-27 22:17:28,613 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 496 predicate places. [2024-06-27 22:17:28,613 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 729 transitions, 13977 flow [2024-06-27 22:17:28,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:28,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:28,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:28,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 22:17:28,613 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:17:28,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:28,614 INFO L85 PathProgramCache]: Analyzing trace with hash -88397086, now seen corresponding path program 7 times [2024-06-27 22:17:28,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:28,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119146550] [2024-06-27 22:17:28,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:28,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:30,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:30,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:30,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119146550] [2024-06-27 22:17:30,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119146550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:30,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:30,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:17:30,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315812000] [2024-06-27 22:17:30,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:30,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:17:30,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:30,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:17:30,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:17:30,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:17:30,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 729 transitions, 13977 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:30,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:30,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:17:30,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:32,399 INFO L124 PetriNetUnfolderBase]: 1633/3088 cut-off events. [2024-06-27 22:17:32,399 INFO L125 PetriNetUnfolderBase]: For 680858/680878 co-relation queries the response was YES. [2024-06-27 22:17:32,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35996 conditions, 3088 events. 1633/3088 cut-off events. For 680858/680878 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 20698 event pairs, 240 based on Foata normal form. 9/2811 useless extension candidates. Maximal degree in co-relation 35736. Up to 2122 conditions per place. [2024-06-27 22:17:32,461 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 479 selfloop transitions, 252 changer transitions 0/752 dead transitions. [2024-06-27 22:17:32,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 752 transitions, 16925 flow [2024-06-27 22:17:32,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:17:32,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:17:32,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-27 22:17:32,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46411483253588515 [2024-06-27 22:17:32,462 INFO L175 Difference]: Start difference. First operand has 538 places, 729 transitions, 13977 flow. Second operand 11 states and 194 transitions. [2024-06-27 22:17:32,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 752 transitions, 16925 flow [2024-06-27 22:17:36,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 752 transitions, 16537 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 22:17:36,940 INFO L231 Difference]: Finished difference. Result has 541 places, 735 transitions, 14473 flow [2024-06-27 22:17:36,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13589, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14473, PETRI_PLACES=541, PETRI_TRANSITIONS=735} [2024-06-27 22:17:36,940 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 499 predicate places. [2024-06-27 22:17:36,940 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 735 transitions, 14473 flow [2024-06-27 22:17:36,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:36,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:36,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:36,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 22:17:36,941 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:17:36,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:36,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1914289225, now seen corresponding path program 4 times [2024-06-27 22:17:36,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:36,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988932969] [2024-06-27 22:17:36,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:36,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:39,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:39,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:39,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988932969] [2024-06-27 22:17:39,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988932969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:39,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:39,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:17:39,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141454834] [2024-06-27 22:17:39,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:39,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:17:39,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:39,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:17:39,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:17:39,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:17:39,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 735 transitions, 14473 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:39,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:39,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:17:39,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:41,017 INFO L124 PetriNetUnfolderBase]: 1614/3068 cut-off events. [2024-06-27 22:17:41,017 INFO L125 PetriNetUnfolderBase]: For 667257/667318 co-relation queries the response was YES. [2024-06-27 22:17:41,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35749 conditions, 3068 events. 1614/3068 cut-off events. For 667257/667318 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 20702 event pairs, 256 based on Foata normal form. 12/2829 useless extension candidates. Maximal degree in co-relation 35487. Up to 2331 conditions per place. [2024-06-27 22:17:41,238 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 519 selfloop transitions, 211 changer transitions 0/751 dead transitions. [2024-06-27 22:17:41,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 751 transitions, 15984 flow [2024-06-27 22:17:41,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:17:41,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:17:41,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 202 transitions. [2024-06-27 22:17:41,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44298245614035087 [2024-06-27 22:17:41,239 INFO L175 Difference]: Start difference. First operand has 541 places, 735 transitions, 14473 flow. Second operand 12 states and 202 transitions. [2024-06-27 22:17:41,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 751 transitions, 15984 flow [2024-06-27 22:17:45,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 751 transitions, 15242 flow, removed 113 selfloop flow, removed 8 redundant places. [2024-06-27 22:17:45,635 INFO L231 Difference]: Finished difference. Result has 546 places, 736 transitions, 14215 flow [2024-06-27 22:17:45,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13731, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14215, PETRI_PLACES=546, PETRI_TRANSITIONS=736} [2024-06-27 22:17:45,636 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 504 predicate places. [2024-06-27 22:17:45,637 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 736 transitions, 14215 flow [2024-06-27 22:17:45,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:45,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:45,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:45,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 22:17:45,637 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:17:45,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:45,639 INFO L85 PathProgramCache]: Analyzing trace with hash -58577566, now seen corresponding path program 8 times [2024-06-27 22:17:45,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:45,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8661985] [2024-06-27 22:17:45,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:45,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:47,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:47,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:47,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8661985] [2024-06-27 22:17:47,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8661985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:47,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:47,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:17:47,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435063119] [2024-06-27 22:17:47,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:47,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:17:47,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:47,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:17:47,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:17:47,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:17:47,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 736 transitions, 14215 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:47,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:47,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:17:47,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:48,961 INFO L124 PetriNetUnfolderBase]: 1647/3110 cut-off events. [2024-06-27 22:17:48,961 INFO L125 PetriNetUnfolderBase]: For 690676/690696 co-relation queries the response was YES. [2024-06-27 22:17:49,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35922 conditions, 3110 events. 1647/3110 cut-off events. For 690676/690696 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 20886 event pairs, 240 based on Foata normal form. 10/2826 useless extension candidates. Maximal degree in co-relation 35659. Up to 2142 conditions per place. [2024-06-27 22:17:49,025 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 485 selfloop transitions, 251 changer transitions 0/757 dead transitions. [2024-06-27 22:17:49,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 757 transitions, 17033 flow [2024-06-27 22:17:49,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:17:49,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:17:49,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-06-27 22:17:49,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4665071770334928 [2024-06-27 22:17:49,026 INFO L175 Difference]: Start difference. First operand has 546 places, 736 transitions, 14215 flow. Second operand 11 states and 195 transitions. [2024-06-27 22:17:49,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 757 transitions, 17033 flow [2024-06-27 22:17:53,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 757 transitions, 16461 flow, removed 52 selfloop flow, removed 11 redundant places. [2024-06-27 22:17:53,712 INFO L231 Difference]: Finished difference. Result has 546 places, 740 transitions, 14373 flow [2024-06-27 22:17:53,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13649, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=736, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14373, PETRI_PLACES=546, PETRI_TRANSITIONS=740} [2024-06-27 22:17:53,713 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 504 predicate places. [2024-06-27 22:17:53,713 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 740 transitions, 14373 flow [2024-06-27 22:17:53,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:53,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:53,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:53,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 22:17:53,713 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:17:53,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:53,713 INFO L85 PathProgramCache]: Analyzing trace with hash -303221628, now seen corresponding path program 11 times [2024-06-27 22:17:53,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:53,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754457171] [2024-06-27 22:17:53,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:53,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:54,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:54,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:54,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754457171] [2024-06-27 22:17:54,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754457171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:54,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:54,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:17:54,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499340474] [2024-06-27 22:17:54,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:54,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:17:54,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:54,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:17:54,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:17:54,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:17:54,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 740 transitions, 14373 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 22:17:54,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:54,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:17:54,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:56,622 INFO L124 PetriNetUnfolderBase]: 2043/3712 cut-off events. [2024-06-27 22:17:56,623 INFO L125 PetriNetUnfolderBase]: For 699620/699620 co-relation queries the response was YES. [2024-06-27 22:17:56,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40606 conditions, 3712 events. 2043/3712 cut-off events. For 699620/699620 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 24659 event pairs, 224 based on Foata normal form. 2/3472 useless extension candidates. Maximal degree in co-relation 40343. Up to 3191 conditions per place. [2024-06-27 22:17:56,699 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 671 selfloop transitions, 90 changer transitions 0/770 dead transitions. [2024-06-27 22:17:56,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 770 transitions, 16247 flow [2024-06-27 22:17:56,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:17:56,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:17:56,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:17:56,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-06-27 22:17:56,700 INFO L175 Difference]: Start difference. First operand has 546 places, 740 transitions, 14373 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:17:56,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 770 transitions, 16247 flow [2024-06-27 22:18:01,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 770 transitions, 15711 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-27 22:18:01,614 INFO L231 Difference]: Finished difference. Result has 550 places, 748 transitions, 14308 flow [2024-06-27 22:18:01,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13837, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=650, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14308, PETRI_PLACES=550, PETRI_TRANSITIONS=748} [2024-06-27 22:18:01,615 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 508 predicate places. [2024-06-27 22:18:01,615 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 748 transitions, 14308 flow [2024-06-27 22:18:01,615 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 22:18:01,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:01,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:01,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 22:18:01,616 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:01,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:01,616 INFO L85 PathProgramCache]: Analyzing trace with hash 118202888, now seen corresponding path program 12 times [2024-06-27 22:18:01,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:01,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260382384] [2024-06-27 22:18:01,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:01,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:02,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:02,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:02,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260382384] [2024-06-27 22:18:02,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260382384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:02,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:02,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:18:02,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705820878] [2024-06-27 22:18:02,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:02,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:18:02,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:02,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:18:02,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:18:02,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:18:02,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 748 transitions, 14308 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 22:18:02,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:02,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:18:02,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:04,622 INFO L124 PetriNetUnfolderBase]: 2124/3866 cut-off events. [2024-06-27 22:18:04,622 INFO L125 PetriNetUnfolderBase]: For 717403/717403 co-relation queries the response was YES. [2024-06-27 22:18:04,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41506 conditions, 3866 events. 2124/3866 cut-off events. For 717403/717403 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 26098 event pairs, 224 based on Foata normal form. 2/3617 useless extension candidates. Maximal degree in co-relation 41242. Up to 3277 conditions per place. [2024-06-27 22:18:04,700 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 692 selfloop transitions, 92 changer transitions 0/793 dead transitions. [2024-06-27 22:18:04,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 793 transitions, 16412 flow [2024-06-27 22:18:04,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:18:04,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:18:04,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 22:18:04,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44976076555023925 [2024-06-27 22:18:04,702 INFO L175 Difference]: Start difference. First operand has 550 places, 748 transitions, 14308 flow. Second operand 11 states and 188 transitions. [2024-06-27 22:18:04,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 793 transitions, 16412 flow [2024-06-27 22:18:10,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 793 transitions, 16078 flow, removed 91 selfloop flow, removed 8 redundant places. [2024-06-27 22:18:10,050 INFO L231 Difference]: Finished difference. Result has 554 places, 768 transitions, 14665 flow [2024-06-27 22:18:10,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13974, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=656, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14665, PETRI_PLACES=554, PETRI_TRANSITIONS=768} [2024-06-27 22:18:10,051 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 512 predicate places. [2024-06-27 22:18:10,051 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 768 transitions, 14665 flow [2024-06-27 22:18:10,051 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 22:18:10,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:10,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:10,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 22:18:10,051 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:10,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:10,051 INFO L85 PathProgramCache]: Analyzing trace with hash 237274508, now seen corresponding path program 13 times [2024-06-27 22:18:10,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:10,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423849641] [2024-06-27 22:18:10,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:10,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:11,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:11,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:11,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423849641] [2024-06-27 22:18:11,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423849641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:11,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:11,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:18:11,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530962299] [2024-06-27 22:18:11,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:11,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:18:11,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:11,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:18:11,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:18:11,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:18:11,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 768 transitions, 14665 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 22:18:11,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:11,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:18:11,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:13,427 INFO L124 PetriNetUnfolderBase]: 2151/3918 cut-off events. [2024-06-27 22:18:13,427 INFO L125 PetriNetUnfolderBase]: For 727415/727415 co-relation queries the response was YES. [2024-06-27 22:18:13,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42053 conditions, 3918 events. 2151/3918 cut-off events. For 727415/727415 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 26556 event pairs, 253 based on Foata normal form. 2/3669 useless extension candidates. Maximal degree in co-relation 41787. Up to 3378 conditions per place. [2024-06-27 22:18:13,507 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 687 selfloop transitions, 100 changer transitions 0/796 dead transitions. [2024-06-27 22:18:13,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 796 transitions, 16571 flow [2024-06-27 22:18:13,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:18:13,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:18:13,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:18:13,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4449760765550239 [2024-06-27 22:18:13,508 INFO L175 Difference]: Start difference. First operand has 554 places, 768 transitions, 14665 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:18:13,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 796 transitions, 16571 flow [2024-06-27 22:18:18,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 796 transitions, 16195 flow, removed 111 selfloop flow, removed 8 redundant places. [2024-06-27 22:18:18,816 INFO L231 Difference]: Finished difference. Result has 557 places, 774 transitions, 14747 flow [2024-06-27 22:18:18,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14289, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=768, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=668, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14747, PETRI_PLACES=557, PETRI_TRANSITIONS=774} [2024-06-27 22:18:18,816 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 515 predicate places. [2024-06-27 22:18:18,817 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 774 transitions, 14747 flow [2024-06-27 22:18:18,817 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 22:18:18,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:18,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:18,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 22:18:18,817 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:18,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:18,818 INFO L85 PathProgramCache]: Analyzing trace with hash 6308036, now seen corresponding path program 14 times [2024-06-27 22:18:18,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:18,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62952097] [2024-06-27 22:18:18,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:18,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:20,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:20,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:20,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62952097] [2024-06-27 22:18:20,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62952097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:20,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:20,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:18:20,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112479536] [2024-06-27 22:18:20,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:20,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:18:20,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:20,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:18:20,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:18:20,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:18:20,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 774 transitions, 14747 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 22:18:20,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:20,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:18:20,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:22,429 INFO L124 PetriNetUnfolderBase]: 2171/3956 cut-off events. [2024-06-27 22:18:22,429 INFO L125 PetriNetUnfolderBase]: For 738031/738031 co-relation queries the response was YES. [2024-06-27 22:18:22,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42330 conditions, 3956 events. 2171/3956 cut-off events. For 738031/738031 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 26923 event pairs, 255 based on Foata normal form. 2/3704 useless extension candidates. Maximal degree in co-relation 42063. Up to 3400 conditions per place. [2024-06-27 22:18:22,511 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 682 selfloop transitions, 109 changer transitions 0/800 dead transitions. [2024-06-27 22:18:22,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 800 transitions, 16655 flow [2024-06-27 22:18:22,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:18:22,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:18:22,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:18:22,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-27 22:18:22,512 INFO L175 Difference]: Start difference. First operand has 557 places, 774 transitions, 14747 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:18:22,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 800 transitions, 16655 flow [2024-06-27 22:18:27,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 800 transitions, 16267 flow, removed 99 selfloop flow, removed 9 redundant places. [2024-06-27 22:18:27,913 INFO L231 Difference]: Finished difference. Result has 559 places, 778 transitions, 14816 flow [2024-06-27 22:18:27,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14359, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=665, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14816, PETRI_PLACES=559, PETRI_TRANSITIONS=778} [2024-06-27 22:18:27,914 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 517 predicate places. [2024-06-27 22:18:27,914 INFO L495 AbstractCegarLoop]: Abstraction has has 559 places, 778 transitions, 14816 flow [2024-06-27 22:18:27,914 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 22:18:27,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:27,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:27,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-27 22:18:27,914 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:27,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:27,915 INFO L85 PathProgramCache]: Analyzing trace with hash -875757688, now seen corresponding path program 15 times [2024-06-27 22:18:27,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:27,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774083547] [2024-06-27 22:18:27,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:27,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:29,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:29,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:29,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774083547] [2024-06-27 22:18:29,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774083547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:29,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:29,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:18:29,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059463374] [2024-06-27 22:18:29,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:29,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:18:29,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:29,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:18:29,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:18:29,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 22:18:29,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 778 transitions, 14816 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 22:18:29,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:29,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 22:18:29,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:31,140 INFO L124 PetriNetUnfolderBase]: 2184/3980 cut-off events. [2024-06-27 22:18:31,140 INFO L125 PetriNetUnfolderBase]: For 747552/747552 co-relation queries the response was YES. [2024-06-27 22:18:31,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42575 conditions, 3980 events. 2184/3980 cut-off events. For 747552/747552 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 27123 event pairs, 262 based on Foata normal form. 2/3726 useless extension candidates. Maximal degree in co-relation 42307. Up to 3341 conditions per place. [2024-06-27 22:18:31,221 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 637 selfloop transitions, 156 changer transitions 0/802 dead transitions. [2024-06-27 22:18:31,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 802 transitions, 16730 flow [2024-06-27 22:18:31,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:18:31,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:18:31,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:18:31,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-06-27 22:18:31,222 INFO L175 Difference]: Start difference. First operand has 559 places, 778 transitions, 14816 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:18:31,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 802 transitions, 16730 flow [2024-06-27 22:18:36,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 802 transitions, 16313 flow, removed 103 selfloop flow, removed 9 redundant places. [2024-06-27 22:18:36,460 INFO L231 Difference]: Finished difference. Result has 561 places, 780 transitions, 14939 flow [2024-06-27 22:18:36,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14399, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=778, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14939, PETRI_PLACES=561, PETRI_TRANSITIONS=780} [2024-06-27 22:18:36,460 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 519 predicate places. [2024-06-27 22:18:36,461 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 780 transitions, 14939 flow [2024-06-27 22:18:36,461 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 22:18:36,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:36,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:36,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-27 22:18:36,461 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:36,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:36,461 INFO L85 PathProgramCache]: Analyzing trace with hash -868392367, now seen corresponding path program 5 times [2024-06-27 22:18:36,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:36,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158511635] [2024-06-27 22:18:36,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:36,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:38,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:38,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:38,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158511635] [2024-06-27 22:18:38,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158511635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:38,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:38,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:18:38,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303976674] [2024-06-27 22:18:38,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:38,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:18:38,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:38,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:18:38,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:18:38,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:18:38,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 780 transitions, 14939 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:38,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:38,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:18:38,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:40,260 INFO L124 PetriNetUnfolderBase]: 1845/3472 cut-off events. [2024-06-27 22:18:40,260 INFO L125 PetriNetUnfolderBase]: For 731077/731103 co-relation queries the response was YES. [2024-06-27 22:18:40,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38467 conditions, 3472 events. 1845/3472 cut-off events. For 731077/731103 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 23944 event pairs, 270 based on Foata normal form. 9/3168 useless extension candidates. Maximal degree in co-relation 38198. Up to 2825 conditions per place. [2024-06-27 22:18:40,323 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 613 selfloop transitions, 160 changer transitions 0/794 dead transitions. [2024-06-27 22:18:40,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 794 transitions, 16597 flow [2024-06-27 22:18:40,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:18:40,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:18:40,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:18:40,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-06-27 22:18:40,324 INFO L175 Difference]: Start difference. First operand has 561 places, 780 transitions, 14939 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:18:40,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 794 transitions, 16597 flow [2024-06-27 22:18:45,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 794 transitions, 16075 flow, removed 107 selfloop flow, removed 9 redundant places. [2024-06-27 22:18:45,501 INFO L231 Difference]: Finished difference. Result has 563 places, 782 transitions, 14830 flow [2024-06-27 22:18:45,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14417, PETRI_DIFFERENCE_MINUEND_PLACES=552, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=780, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=620, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14830, PETRI_PLACES=563, PETRI_TRANSITIONS=782} [2024-06-27 22:18:45,501 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 521 predicate places. [2024-06-27 22:18:45,501 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 782 transitions, 14830 flow [2024-06-27 22:18:45,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:45,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:45,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:45,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-27 22:18:45,502 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:45,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:45,502 INFO L85 PathProgramCache]: Analyzing trace with hash -875549926, now seen corresponding path program 9 times [2024-06-27 22:18:45,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:45,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489035313] [2024-06-27 22:18:45,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:45,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:47,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:47,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:47,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489035313] [2024-06-27 22:18:47,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489035313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:47,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:47,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:18:47,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57275283] [2024-06-27 22:18:47,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:47,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:18:47,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:47,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:18:47,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:18:47,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:18:47,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 782 transitions, 14830 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:47,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:47,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:18:47,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:48,782 INFO L124 PetriNetUnfolderBase]: 1894/3551 cut-off events. [2024-06-27 22:18:48,782 INFO L125 PetriNetUnfolderBase]: For 833222/833242 co-relation queries the response was YES. [2024-06-27 22:18:48,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40750 conditions, 3551 events. 1894/3551 cut-off events. For 833222/833242 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 24474 event pairs, 270 based on Foata normal form. 9/3231 useless extension candidates. Maximal degree in co-relation 40481. Up to 2835 conditions per place. [2024-06-27 22:18:48,856 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 601 selfloop transitions, 184 changer transitions 0/807 dead transitions. [2024-06-27 22:18:48,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 807 transitions, 17786 flow [2024-06-27 22:18:48,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:18:48,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:18:48,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-27 22:18:48,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-06-27 22:18:48,857 INFO L175 Difference]: Start difference. First operand has 563 places, 782 transitions, 14830 flow. Second operand 10 states and 187 transitions. [2024-06-27 22:18:48,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 807 transitions, 17786 flow [2024-06-27 22:18:54,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 807 transitions, 17405 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-27 22:18:54,737 INFO L231 Difference]: Finished difference. Result has 565 places, 793 transitions, 15462 flow [2024-06-27 22:18:54,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14449, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=782, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15462, PETRI_PLACES=565, PETRI_TRANSITIONS=793} [2024-06-27 22:18:54,738 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 523 predicate places. [2024-06-27 22:18:54,738 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 793 transitions, 15462 flow [2024-06-27 22:18:54,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:54,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:54,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:54,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-27 22:18:54,739 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:54,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:54,739 INFO L85 PathProgramCache]: Analyzing trace with hash -875542486, now seen corresponding path program 10 times [2024-06-27 22:18:54,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:54,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084845919] [2024-06-27 22:18:54,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:54,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:56,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:56,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:56,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084845919] [2024-06-27 22:18:56,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084845919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:56,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:56,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:18:56,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895752771] [2024-06-27 22:18:56,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:56,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:18:56,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:56,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:18:56,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:18:56,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:18:56,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 793 transitions, 15462 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:56,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:56,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:18:56,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:58,424 INFO L124 PetriNetUnfolderBase]: 1891/3548 cut-off events. [2024-06-27 22:18:58,424 INFO L125 PetriNetUnfolderBase]: For 823840/823862 co-relation queries the response was YES. [2024-06-27 22:18:58,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40459 conditions, 3548 events. 1891/3548 cut-off events. For 823840/823862 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 24497 event pairs, 270 based on Foata normal form. 10/3229 useless extension candidates. Maximal degree in co-relation 40188. Up to 2891 conditions per place. [2024-06-27 22:18:58,500 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 626 selfloop transitions, 159 changer transitions 0/806 dead transitions. [2024-06-27 22:18:58,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 806 transitions, 17440 flow [2024-06-27 22:18:58,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:18:58,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:18:58,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:18:58,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4449760765550239 [2024-06-27 22:18:58,501 INFO L175 Difference]: Start difference. First operand has 565 places, 793 transitions, 15462 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:18:58,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 806 transitions, 17440 flow [2024-06-27 22:19:04,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 806 transitions, 16963 flow, removed 138 selfloop flow, removed 5 redundant places. [2024-06-27 22:19:04,120 INFO L231 Difference]: Finished difference. Result has 571 places, 793 transitions, 15310 flow [2024-06-27 22:19:04,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14985, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=793, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=634, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15310, PETRI_PLACES=571, PETRI_TRANSITIONS=793} [2024-06-27 22:19:04,121 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 529 predicate places. [2024-06-27 22:19:04,121 INFO L495 AbstractCegarLoop]: Abstraction has has 571 places, 793 transitions, 15310 flow [2024-06-27 22:19:04,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:04,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:04,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:04,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-27 22:19:04,122 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:04,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:04,122 INFO L85 PathProgramCache]: Analyzing trace with hash -451440500, now seen corresponding path program 11 times [2024-06-27 22:19:04,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:04,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679275313] [2024-06-27 22:19:04,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:04,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:05,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:05,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:05,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679275313] [2024-06-27 22:19:05,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679275313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:05,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:05,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:19:05,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450285648] [2024-06-27 22:19:05,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:05,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:19:05,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:05,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:19:05,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:19:06,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:19:06,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 793 transitions, 15310 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:06,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:06,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:19:06,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15